According to the vector study, the upward direction is taken as positive, and the downward direction is taken as negative.
in the same manner, the rightward direction is taken as positive span the leftward direction is taken as negative.
As the object is hot vertically upwards so now the direction of velocity is taken as positive as given in the question.
(Because it is direction is in the direction of the center of the Earth). until the object reaches its maximum height where the speed is zero and then it begins to fall until it hits the ground.
At the maximum height, the velocity is zero.
The acceleration acting on the object is acceleration due to gravity which is always acting downwards so it is taken as negative.
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When 1 kg of ice at 0 degree Celsius is mixed?
When 1 kilogram of ice at 0 degrees Celsius is mixed with another substance, it will absorb heat until it melts and reaches its melting point of 0 degrees Celsius.
The amount of heat required to melt the ice is called the heat of fusion, which is typically around 333.55 joules per gram. Therefore, it will absorb approximately 333,550 joules of energy to completely melt.
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An114kgmanclimbsupa1mhighflightof stairs. The acceleration of gravity is 9.81 m/s2 . What is the increase in the gravitational potential energy of the man-earth system
The increase in the gravitational potential energy of the man-earth system is 1.117 kJ.
An object's position relative to some reference point, zero, causes it to store a certain amount of energy known as potential energy.
The formula for determining potential energy, denoted by the letter P, is as follows:
P = mass x gravity x height.
According to the information provided:
The mass (m) of the man (in kilograms) is 114 kilograms
Displacement or height (h) = 1 meter
The acceleration of gravity (g) = 9.8 meters per second squared.
Therefore, potential energy (P) is 114 kg x 9.8 m/s x 1 m= 1,117.2 joules = 1.117 kJ
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A golfer gives a ball a maximum initial speed of 32.0 m/s. What is the highest tree the ball could clear on its way to the longest possible hole-in-one?
The longest possible distance of hole-in-one is achieved when the angle of initial velocity is 45⁰ from the horizontal. The highest tree the ball could clear is 104.5 m.
The ball will undergo a projectile motion. The longest possible horizontal distance is achieved when the angle of initial velocity is 45⁰ from the horizontal.
The maximum height occurs when the vertical component of the velocity is equal to zero, or vy = 0.
The maximum height is:
h_max = vo² sin²θ/2g
Where:
vo = initial velocity = 32 m/s
θ = 45⁰
g = acceleration due to gravity = 9.8 m/s²
Hence,
h_max = 32² x (sin 45⁰)²/ (2x9.8)
h_max = 1,024 x (√2/2)²/ (2x9.8)
h_max = 1024 / 9.8 = 104.5 m
Hence, the highest tree the ball could clear is 104.5 m
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Design an experiment to separate the components of a mixture of two solids - Sodium chloride and Sucrose. Both compounds are soluble in water, but Sucrose is much more soluble in an organic solvent (Dichloromethane) than water. Sodium chloride does not dissolve in dichloromethane.
By utilizing a funnel filter made of Sodium chloride salt as a filtration method. The organic solvent will be evaporated using the rotary evaporation method, leaving the sucrose behind.
Where is HCl found in the body?All plants naturally generate sugar, the well-known and adored simple carbohydrate, also called by its chemical formula, sucrose. This includes fruits, veggies, and even nuts. Plants including berries, vegetables, and nuts naturally contain sugars like glucose in various amounts. Sucrose is also commercially generated from sugar cane and beets.
What is HCl used for in everyday life?According to a research, ingesting "natural" sugar might be just as bad for your health as consuming high- fructose corn syrup. Sucrose, a carbohydrate, provides the energy your body needs to perform both mental and physical work. Your body converts foods like starch and sucrose into glucose and fructose during digestion. Your body breaks down food to provide your cells energy. Reduce the fructose and glucose down.
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The north end of a magnet in a compass which is installed in the
ship align itself with earth's_
_or
pole.
( 2 marks)
B
magnetic south
D
geographical south
magnetic north
geographical north
The north end of a magnet in a compass which is installed in the ship align itself with earth's magnetic north which is therefore denoted as option C.
What is a Magnet?
This is referred to as a type of material or object that produces a magnetic field.
Magnetic north on the other hand is referred to as the direction that a compass needle points to as it aligns with the Earth's magnetic field and in this case we were told that the north end of a magnet in a compass which is installed in the ship align itself which is therefore the reason why option C was chosen as the correct choice.
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after the center of a mature wave cyclone passes, you should expect ________.
You should anticipate a rise in barometric pressure once the core of a mature wave cyclone has passed.
When a mature cyclone's centre has passed, what happens to the weather?After the core of a mature wave cyclone has passed, what will happen to the barometric pressure? The atmospheric pressure will increase.
Has the wind changed direction as it passes, from southwest to northwest?With the passage of a cold front, a dramatic change in wind direction is frequently seen. In the warmer air mass ahead of the front, winds are often out of the south-southwest before the front arrives, but as it arrives, winds typically change to the west-northwest (in the colder air mass).
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1. What factors make it more likely that an animal will be preserved as a fossil?
2. What are the five main processes of fossilization?
3. A scientist wants to determine the age of a rock. The rock contains an index fossil and an ancient relative of a
living organism. Which is more useful for dating the rock, and why?
4. A 15th century farmer finds a rock that looks exactly like a clamshell. What did he likely conclude about how the
fossil got there?
5. Why didn't the early geologic time scale include the number of years ago that events happened?
6. Dinosaurs went extinct about 66 million years ago. Which period of geologic time was the last in which dinosaurs
lived?
7. Why are sedimentary rocks more useful than metamorphic or igneous rocks in establishing the relative ages of
rock?
8. Which is likely to be more frequently found in rocks: fossils of very old sea creatures or very old land creatures?
The factors that make an animal to be preserved as a fossil includes that the fossils such a bones, skull etc can be preserved for longer time and can be studied to analyse their structure living era and behaviors.
What is fossil?Fossils are decomposing plans and animals. They are rich in carbon and can be preserved for a long time. Study of fossils reveals the structural and behavioral characteristics of the organism.
Fossilization can occur through five ways. Which are :preserved remains,permineralization, molds and casts, replacement and compression.
Using fossil samples, it is easy to determine the age of the material rather than comparing with a ancient relative of a living organism. The age of rock can be determined using the measurement of radioactive uranium in the fossils.
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where do you have to be on earth to see the south celestial pole at your zenith?
please help
To see the south celestial pole at your zenith, you would have to be located at a point on the Earth's surface that is directly below the south celestial pole. The south celestial pole is the point in the sky around which the stars appear to rotate in a counterclockwise direction as viewed from the Southern Hemisphere.
What is the south celestial pole?The location on the Earth's surface that is directly below the south celestial pole will vary depending on the time of year and the Earth's position in its orbit around the Sun.
However, as a general rule, the south celestial pole is highest in the sky and closest to the zenith for an observer at a latitude of about 90 degrees south. This means that to see the south celestial pole at your zenith, you would have to be at or near the South Pole.
Therefore, It is worth knowing that the south celestial pole is not visible from the Northern Hemisphere, as it is below the horizon for observers located north of the equator. Similarly, the north celestial pole, which is located directly above the North Pole, is not visible from the Southern Hemisphere.
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the apparent path of the sun upon the celestial sphere is called the ________. declination precession sidereal ecliptic parallax 2 points
Answer:
ecliptic
Explanation:
its actually the intersection of the plane and the Earth's orbit with the celestial sphere.
]A weather balloon is designed to expand to a minimum radius of 20 m when in flight at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric pressure and 300 K, what is its radius at lift-off
A weather balloon is designed to expand to a minimum radius of 20 m when in flight at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric pressure and 300 K, its radius at lift-off will be 6.83 m
The radius can be calculate as follows:
P₁ is Initial pressure = 0.03 atm
P₂ is Final pressure = 1 atm
r₁ is Inital radius = 20 m
V₁ is Intial volume of gas = 4/3 x 3.14 x r1^3
V₂ is Final volume of gas = 4/3 x 3.14 x r2^3
T₁ is Initial temperature = 200 K
T₂ is Final temperature = 300 K
Let the radius at the liftoff be r₂
From ideal gas law we have
P₁V₁/T₁ = P₂V₂/T₂
P1V1T2 = P2V2T1
P₁ x (4/3 x 3.14 x r₁³) x T₂ = P₂ x (4/3 x 3.14 x r₂³ )x T₁
P₁ x r₁³ x T₂ = P₂ x r₂³ x T₁
r₂³ = P₁ x r₁³x T₂ / P₂ x T₂
r₂³ = 0.03 x 20³ x 300/ 1 x 200
r₂³ = 360 m
r₂ = 6.83 m
Hence, The radius at liftoff is 6.83 m
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Two particles (m1 = 0. 20 kg, m2 = 0. 30 kg) are positioned at the ends of a 2. 0-m long rod of negligible mass. What is the moment of inertia of this rigid body about an axis perpendicular to the rod and through the center of mass?.
The moment of inertia of the rigid body about an axis perpendicular to the rod and through the center of mass is 0.48 kgm²
The mass of the first particle = 0.2 kg
The mass of the second particle = 0.3 kg
The distance between the mass = 2 m
The moment of inertia between this rigid body can be found using the formula,
I = m₁m₂r² / (m₁ + m₂)
where I is the moment of inertia
m₁,m₂ is the mass of the first and second particles
r is the distance between the particles.
Let us substitute the known values in the above equation, we get
= (0.2 x 0.3 x 2²) / (0.2 + 0.3)
= 0.24 / 0.5
= 0.48 kgm²
Therefore, the moment of inertia of the rigid body is 0.48 kgm²
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A 12 kg book is pushed from rest to a final velocity of 10 m/s. The book travels 6 m. How much force was the book pushed with?.
A 12 kg book is pushed from rest to final velocity of 10 m/s, the book was pushed with a force of 99.96 N.
What is meant by force?In physics, force is an influence that changes the motion of object. A force can cause an object with to change its velocity.
Given, Mass (m) = 12Kg
Initial velocity (U) = 0
Final Velocity (V) = 10 m/s
Distance travelled (s) = 6m
Using formula;
V² = U² + 2as
10² = 0 + 2 x a x 6
100 = 12a
a = 8.33 m/s²
As we know, F = m x a
F = 12 x 8.33
F = 99.96 N
The book was pushed with a force of 99.96 N.
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An astronaut weighs 500 newtons on earth and 25 newtons on asteroid x. The acceleration due to gravity on asteroid x is approximately.
The acceleration due to gravity on asteroid X is approximately 0.5 m/s². The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity.
What is acceleration due to gravity ?To calculate the acceleration due to gravity on asteroid X, you need to first determine the mass of the astronaut. Since weight is a measure of the force of gravity on an object, and the force of gravity is directly proportional to the mass of the object, the mass of the astronaut can be calculated by dividing the weight on Earth by the acceleration due to gravity on Earth.
The acceleration due to gravity on Earth = 9.8 meters per second
The mass of the astronaut = 500 Newtons / 9.8 m/s^2, 50 Kg
The equation for gravitational force is F = Gm1m2/r^2,
where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them . Solving for r, you can calculate that the distance between the astronaut and the center of asteroid X is approximately 5 meters. That is 0.5 m/s².
Therefore, The acceleration due to gravity on asteroid X is approximately 0.5 m/s². The acceleration an object experiences as a result of gravitational force is known as acceleration due to gravity.
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Make a force diagram for the following scenarios:
A car is accelerating to the left at a rate of -3.5 m/s²
The force body diagram is given below:
Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation. A free-body diagram is a special example of the vector diagrams. These diagrams will be used throughout our study of physics. The size of the arrow in a free-body diagram reflects the magnitude of the force. The direction of the arrow shows the direction that the force is acting. Each force arrow in the diagram is labeled to indicate the exact type of force. It is generally customary in a free-body diagram to represent the object by a box and to draw the force arrow from the center of the box outward in the direction that the force is acting.Here,
F(N) = Normal force
F = Force
a = acceleration
m = mass
g = acceleration due to gravity
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The energy gap for silicon at 300 k is 1. 14 ev. The lowest-frequency photon that can promote an electron from the valence band to the conduction band will be.
At 300 K, the energy gap for silicon is 1.1 eV, whereas that of germanium is 0.78 eV.
How do you determine silicon's band gap energy?Wavelength (nm) (nm) All of these places will be along the same line and have the same slope when measured in arbitrarily units (A.U.). Now, when we plug the wavelength value into equation 2 of the Planck-Einstein equation, we obtain the band gap of a P-type monocrystalline silicon wafer, which is 1.127907 eV.
The conduction band is the region of energy where an electron must be in order for it to participate in the conduction of electricity. The band gap or energy gap refers to the separation between the valence band and conduction band.
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A black Light uses_________radiation to make some objects glow
Answer:
ultraviolet
Explanation:
During the value articulation cycle you are asked to identify whether the solution can be produced.
The main goal of a value articulation cycle is to discover, articulate, and enhance your value proposition in order to increase buy-in both internally and externally.
What are the value chain's stages?The value chain framework consists of four secondary activities, procurement and purchasing, human resource management, technological development, and business infrastructure, in addition to five primary activities: inbound operations, operations, outbound logistics, marketing and sales, and service.
The alignment of actors, objects, and social contexts that together create a story that legitimises and articulates particular values may be referred to as value articulation processes.
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If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then:
If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then the source is approaching us at 1% of the speed of light.
About speed of lightThe speed of light or the speed of light symbolized by c is a universal physical constant that is important in many fields of physics. Its precise value is 299,792,458 meters per second (approx. 3.00×108 m/s), because the length of a meter is defined based on this constant and the international standard of time.[
This speed is the maximum speed that all forms of energy, matter, and information in the universe can travel. This speed is the speed of all massless particles and physical fields, including electromagnetic radiation in a vacuum. According to modern theory, this speed is the speed of gravity (the speed of gravitational waves). These particles and waves move at a speed c regardless of the source of motion or the observer's inertial frame of reference. In the theory of relativity, c is related to spacetime. This constant also appears in the physics equation mass-energy balance E = mc2.[2]
The speed of light propagating through transparent materials such as glass or air is slower than c. The ratio between c and the speed v (the speed of light in a material) is called the refractive index n of that material (n = c / v). For example, the refractive index of glass is generally around 1.5, meaning that the light in the glass travels at a speed c / 1.5 ≈ 200,000 km/s; the refractive index of air for visible light is about 1.0003, so the speed of light in air is about 299,700 km/s (about 90 km/s slower than c).
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Where is Harrison's chronometer?
Harrison's chronometer is in the Flamsteed House at the Royal Observatory in Greenwich.
John Harrison was a self-taught English carpenter and watchmaker who invented the marine chronometer, a device for solving the problem of calculating latitude while at sea.
John Harrison devoted his long life to making the 5 chronometers. The most famous chronometer is the No.4 chronometer.
Harrison's clock achieved one-second accuracy in a month, far better than any clock at the time. To solve the Longitude problem, Harrison planned to design a portable clock that would keep the time in three seconds a day. This would make it far more accurate than the best watches of the time.
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Find information about your system’s hardware and operating system and provide the information requested in the table.
Computer Type
Computer Model
Manufacturer
Processor Model
Processor Speed
RAM Capacity
Secondary Storage (type and capacity)Input Devices
Output Devices
Input/Output (Dual) Devices
OS (include the version)
PLEASE HELPP!
Below is an example of the kind of information that might be found in such a table for my HP computer:
Computer Type: Desktop
Computer Model: HP Pavilion
Manufacturer: HP
Processor Model: Intel Core i5
Processor Speed: 2.5 GHz
RAM Capacity: 8 GB
Secondary Storage: 1 TB HDD
Input Devices: Keyboard, Mouse
Output Devices: Monitor, Speakers
Input/Output (Dual) Devices: USB ports, DVD-RW drive
OS: Windows 10 (version 20H2)
What is the purpose of a computer's operating system?The most significant program running on a computer is the operating system. In addition to overseeing all of the computer's hardware and software, it also supervises the memory and processes. Additionally, it enables communication with the computer even if you are not fluent in its language.
Therefore, A group of programs known as an operating system coordinates the actions of computer hardware and software. When man and machine are in contact, it serves as a bridge. Microsoft Windows, Linux, BOSS, and other operating systems are examples.
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How does your model account for demagnetization? (magnetizing a nail that's been magnetized) Please don't take advantage of my kindness of sharing point only answer if you really know. Thanks!
How can an analogy help you build your model? Support with a claim and evidence please
The correct answers are "Heat the magnet up" and "Strike the magnet with a heavy blow".
Explanation:The domains of the permanent magnet of the magnet are aligned then the permanent magnet is magnetized. When it loses its magnetic field under some condition then it becomes Demagnetized. Demagnetization is to remove the magnetic properties from the magnet.
The permanent magnet can be demagnetized by the following ways:
By hammering or striking it.
By heating a magnet over a curie temperature.
By placing the magnet in the stronger opposite magnetic field.
Therefore, the correct option is both B and C.
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A 2.5 kg body moving at 7.0 mls collides hedd-on with another body of mass 4.0 kg at rest. If the is perfectly elastic, Calculate the velocities of the two bodies.
The velocities of the two bodies are 4.4m/s.
To calculate the velocities, we must calculate the momentum before and after the collision.M₁ = 2.5 kg
M₂ = 4.0 kg
V₁ = 7.0 m/s
V₂ = ?
To calculate the momentum before collision P₁:
P₁ = M₁ * V₁
P₁ = 2.5 kg * 7.0 m/s
P₁ = 17.5 kg m/s
The momentum before collision P₁ = 17.5
To calculate the momentum after collision P₂:
P₂ = M₂ * V₂
P₂ = 4.0 kg * V₂
momentum before collision P₁ = the momentum after collision P₂
17.5 kg m/s = 4.0 kg * V₂
Making V₂ subject of the formula we have:
V₂ = 17.5 kg m/s
4.0 kg
V₂ = 4.375
V₂ ≈ 4.4m/s
Hence the velocities of the two bodies is 4.4m/s.
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What does it mean if an object sinks to the bottom of the cylinder?
An object's density influences whether it will float or sink in another material. If an object is less dense than the liquid it is placed in, it will float. If an object is denser than the liquid in which it is immersed, it sinks.
What exactly is density?The density of a substance is a measure of how tightly it is packed. It is stated in terms of mass per unit volume. Density is represented by the symbol D, and the density formula is: = m/V, where is the density, m is the object's mass, and V is its volume. A material's density is defined as its mass per unit volume. The most frequent density symbol is, however the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume.
Here,
The density of a thing influences whether it will float or sink in another substance. If an object is less dense than the liquid in which it is placed, it will float. If an object is more dense than the liquid it is immersed in, it will sink.
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The diameter of a nickel is 21 mm .
How far from your eye must it be held so that it has the same apparent size as the moon? (Use the astronomical data inside the back cover of the textbook.)
The nickel must be placed at a distance of 2.96 meters from your eyes, in order to have the same angular size of the moon.
We can determine the distance at which the nickel must be placed in order to have the same angular size by using the tangent of the angle as before, where the adjacent is the distance between your eyes and the nickel, so we have, knowing the angular size, and knowing the diameter of the penny "the opposite".
The diameter of a nickel is 21 mm = 21 x 10⁻³
(21 x 10⁻³ / adj) = tan 9.037 x 10⁻³
adj = (21 x 10⁻³) / (tan 9.037 x 10⁻³)
= 2.96 m
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The pressure on 400 mL of a gas is raised from 20.5 kPa. to 80.5 kPa. What is the final volume of the gas?
Answer:
200ml
Explanation:
To determine the final volume of the gas, you can use the ideal gas law, which states that PV = nRT, where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature in kelvins.
If you know the initial pressure and volume of the gas, and you raise the pressure to a new value, you can use the ideal gas law to determine the new volume.
For example, if the initial pressure of the gas is 20.5 kPa, the initial volume is 400 mL, the number of moles of the gas is n, the temperature is T, and the pressure is raised to 80.5 kPa, you can solve for the final volume as follows:
P1V1 = nRT
P2V2 = nRT
V2 = (P1V1)/P2
V2 = (20.5 kPa * 400 mL)/80.5 kPa
V2 = 200 mL
So, the final volume of the gas is 200 mL.
It's important to note that this calculation assumes that the temperature and the number of moles of the gas remain constant. If either of these variables changes, the final volume of the gas will also be different.
in the situation described, the kinetic energy of the sled __________.
In the situation described, the kinetic energy of the sled is the movement of the sled and its speed. The motion of the body signifies the kinetic energy of the body.
In physics, the kinetic energy ( KE) of an object is the energy that it possesses due to its motion. kinetic energy is the energy of the body by which it moves to the way ahead. energy has two parts one is kinetic energy and the another one is potential. kinetic energy is the energy of the motion of the object and the potential energy of the body is the energy by the height of the body. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. by this particular information, we can consider firmly that in the situation described, the kinetic energy of the sled is the movement of the sled and its speed. The motion of the body signifies the kinetic energy of the body.
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Determine whether the following technological inventions belonged to the Maya or the Inca
Inca civilization invented communications networks, an accounting system, Terraces, and an effective government system whereas the Maya civilization invented the language of hieroglyphs and also an accurate calendar system.
What inventions did the Inca make?Inca civilization made the invention of communications networks. The Inca's communication system was remarkably outstanding. They also invented the accounting system, Terraces, Freeze drying, the surgery of the Brain, an effective government system, and Rope bridges. Engineering was the Inca's greatest technological skill.
The best example is their wonderful network of roads. The Incas built a web of roads across the entire empire. They carved staircases and made tunnels to create ways of transportation through steep mountain ranges. Maya civilization also developed a written language of hieroglyphs and also invented the concept of zero. With their expertise in astronomy and mathematics, the Maya developed an accurate calendar system.
so we conclude that Maya and Inca civilizations invented different technologies.
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An object undergoing free fall experiencesO a decrease in its acceleration and an increase in its velocity O an increase in both its acceleration and velocity O . a constant acceleration and an increase in its velocity
In a free fall, acceleration doesn't rise. 9.8 m/s2 is roughly the acceleration at the surface of the earth. While the acceleration is constant, the velocity is not.
What transpires during a free fall of an object?
When objects are stated to be falling freely, they are only being pulled downward by gravity and do not experience much air resistance. All objects will fall with the same rate of acceleration under these circumstances, regardless of their mass.
What kind of acceleration does anything undergo during free fall?
The acceleration of an item in free fall is -9.8 m/s/s. (The minus symbol represents a downward acceleration.) Whether it is stated explicitly or not, the acceleration value in the kinematic equations.
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The table shows the number of charged subatomic particles in an ion. Charged particles charge on particle number of particles positive 12 negative 10 a positively charged substance is brought near the ion. What will most likely happen and why?.
The ion will repel the substance because it has lost two electrons.
An ion is a charged specie. We can see from the question that the ion has twelve positive and ten negative particles.
If there are more positive particles than negative particles, then the ion is positively charged.
If the ion is positively charged, it will repel another positively charged particle because like charges repel while opposite charges attract.
What are Positive Ions and Negative IonsThese two ions have a very prominent main difference.
The net electric charge in this case is a prominent difference where positive ions have a net negative electric charge, whereas negative ions actually contain a net positive electric charge.
The Difference between Positive Ions and Negative IonsAn understanding of what positive and negative ions are will be more complete if you also know the detailed differences between the two.
Below are some indicators of the difference between positive and negative ions:
1.Net Cost
Net charge became the first indicator used to differentiate between positive and negative ions. In this case, the positive ion is the type of ion that has a negative net charge.
Vice versa, if the negative ion is a type of ion that contains a net charge in the form of a positive charge.
2. Ionization
In the ionization or formation process, positive ions are exothermic while negative ions are more endothermic.
3. Electrode
The electrode is the third indicator to distinguish positive ions and negative ions. During electrolysis, positive ions will be attracted to the anode. Unlike the negative ions which will be attracted to the cathode during electrolysis.
4. Establishment
In ionization or the formation process, positive ions are formed by attracting electrons, whereas for negative ions are formed due to lost electrons.
5. Element Type
Element types are also included in the positive and negative ion distinguishing indicators. In general, positive ions are formed by non-metallic elements, while negative ions are formed by metallic elements.
6. Content Example
The last indicator that can be used to distinguish the two types of ions is to identify the contents in them.
With the groups of substances in it, then later you can determine the difference between the two.
Some of the substances that include positive ions are fluorides, sulfides, chlorides, iodides, bromides, nitrides and hydrides. While negative ion content is found in Sodium, Lead and Iron.
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A ball is thrown vertically upward with an initial velocity of 99.4 meters per second. What is the maximum height reached by the ball
The maximum height reached by the ball having initial velocity of 99.4 m/s is 494 meters.
According to the third law of motion , v² = u² + 2gH ,
where v is the final velocity of the ball, u is the initial velocity of the ball, g is the acceleration due to gravity and H is the height reached by the ball.
At maximum height, final velocity, v = 0.
Given that u = 99.4 m/s, g = -10 m/s (as the ball is moving upward). Hence, 0² = 99.4² + 2(-10)H ,20H = 99.4², H = 494.01 meters ~ 494 meters.
The maximum height reached by the ball with initial velocity of 99.4m)s is 494 meters.
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