The magnitude of gravitational field strength is 5.0 N/kg
To calculate the magnitude of the gravitational field strength, we need to compute the weight:
Weight = Mass (m) * gravitational-field-strength
Where weight is in Newtons, mass is in kilograms and gravitational-field-strength is (Newtons per kilogram).
Mass is 70 kg.
Substituting the the values:
350 = 70 * gravitational-field-strength
gravitational-field-strength = 350/70
The gravitational-field-strength = 5.0 N/kg
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The magnitude of the gravitational field strength at a certain location is calculated to be 5 N/kg.
To find out the magnitude of the gravitational field strength, we need to calculate the weight.
It is given as, Weight W = Mass m × Gravitational field strength g
where, weight is in newtons
Mass is in kg
Gravitational field strength is in N/kg
Given that, m = 70 kg
W = 350 N
Making 'g' as subject,
Gravitational field strength g = W/m = 350/70 = 5 N/kg
Thus, the required magnitude of the gravitational field strength at a certain location is calculated to be 5 N/kg.
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Who solved the problem of longitude at sea?
The who solved the problem of longitude at sea is John Harrison. John Harrison was born at 24 march 1693 and died at 24 march 1773.
Who is Jon Harrison?John Harrison was a carpenter and clockmaker. In the age of sail, John Harrison invented the marine chronometer. This invention is a revolutionized the accuracy of the longitude position in the sea where there is no device can do during those time. By his invention, the safety of long journey in the say is dramatically because the navigator can determine where exactly their ship and decide a proper direction to move.
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1. According to the
opposite sex who they feel are roughly as attractive as they are.
2. According to the findings of anthropologist Margaret Mead, our ideas of masculine and
feminine behavior are reversed among the
people of New Guinea.
3. According to an extensive national survey, men prefer that a potential mate earn less money
hypothesis, men and women tend to be attracted to members of the
than they do, while women are more likely to be attracted by a man's professional status,
dependability, and fondness for
4. If you think that all members of a particular ethnic or social group are hot tempered, then you're
assigning a
to that group.
5. According to Sternberg,
love is composed of passion + commitment.
6. Brain organization differs between men and women in that the two halves of the brain in
women are connected with a thicker
7. While girls typically acquire
with abstract concepts in
8. According to social
theory, gender typing is more likely to be derived from
observational learning, as well as identification and socialization.
skills earlier than do boys, boys seem to do a bit better
The phrases sex and gender refer to various characteristics of what it means to be a woman or a man in any society, despite the fact that they are frequently used synonymously and complement one another.
What do you meant by gender ?Actually, the argument that we are drawn to those who are like us is very strong.According to the well-known imprinting theory developed by Mead, kids pick up skills by observing how adults behave.There is a substantial corpus of empirical research that supports this claim.The differentiating properties of things in various categories are highlighted by categorization.The kind of love that combines closeness, desire, and commitment is called consummate love, according to Sternberg's triangular theory of love.The volume of the prefrontal cortex, orbitofrontal cortex, superior temporal cortex, lateral parietal cortex, and insula was higher in females.When a child is between the ages of six and ten, they learn the vast bulk of abstract words and ideas. Some abstract words are taught to them early, though.Gender typing happens as a result of reinforcement and modeling, claims the social learning hypothesis.To learn more about gender refer to :
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Find the velocity in m/s of a baseball thrown 38 m from third base to first base in 1. 7 s.
Answer:
22.3 m/s
Explanation:
Velocity=Displacement/Time
V=38/1.7=22.3 m/s
how did the modern synthesis modify the theory of natural selection
The Modern Synthesis modified the theory of natural selection by proposing a new concept of evolution that would emphasize the genetic basis of evolution as "changes in allele frequencies within populations."
What is the modern synthesis theory?In the 1930s and 1940s, a number of now-famous evolutionary biologists created the Modern Synthesis.
The Modern Synthesis proposed a new concept of evolution that would emphasize the genetic basis of evolution as "changes in allele frequencies within populations."
Alleles are different variants of the same gene that differ in the DNA sequence used to build proteins with different amino acid compositions.) The evolution of allele frequencies has been influenced by four forces;
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How long does it take a 100 w motor to do 10 kilojoules of work
The amount of time it will take a 100W motor to do 10kJ of work is 100seconds.
How to calculate power?Power in physics is a measure of the rate of doing work or transferring energy.
It is the rate of doing work, it is the work done in unit time. The SI unit of power is Watt (W) which is equivalent to joules per second (J/s).
This means that power can be calculated by dividing the work done on an object by time.
According to this question, a 100W motor has done 10kJ of work. The time taken can be calculated as follows:
10kJ = 10,000Joules
100W = 10,000J/t
100t = 10000
t = 100s
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the function of _____ is to convert digital signals to analog signals and vice-versa.a) Modems b) Multiplexers c) Front-end processors d) Servers e) Clients
Modem is a device that can convert digital signals to analog signals.
What is modem?A modem is a hardware or application that allows a computer to send data across telephone or cable lines. Computer information is stored digitally, whereas telephone information is delivered in the form of analog waves. A modem is a device that transforms between these two formats.
A data converter, in general, is a device that transforms analog signals to digital data or vice versa. ADC refers to devices that convert analog signals to digital signals. DACs are devices that convert digital signals to analog signals.
The analog signal is sampled by the Analog to Digital Converter on each falling or rising edge of the sample clock. The ADC receives the analog signal, measures it, and transforms it to a digital value in each cycle.
Here,
A modem is a device that converts digital to analog signals.
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Solve and explain, please??
Answer:
it's 5.91098
Explanation:
i don't know but I'm just tipping
The figure shows a hollow tube forming three - quarters of a circle. It is lying flat on a table. A ball is shot through the tube at high speed. C?Explain. B, or path A, path As the ball emerges from the other end, does it follow path
Since there are no horizontal forces when the ball is outside of the tube, it will go straight forward since there is no net horizontal force. In this instance, the right response is (C).
What distinguishes vertical from horizontal forces?Horizontal refers to everything that is perpendicular to the horizon. Anything that forms a 90-degree angle (right angle) with the horizontal or the horizon is referred to as vertical since it is the opposite of the horizontal. The line that spans from left to right is therefore considered to be horizontal.
Which is greater, sin or cos?A brief sketch of the issue indicates that the sine function may be used to determine the vertical component of force and the horizontal component of force.
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The complete question is :
The figure shows a hollow tube forming three-quarters of a circle. It is lying flat on a table. A ball is shot through the tube at high speed.Image for The figure shows a hollow tube forming three - quarters of a circle. It is lying flat on a table. A ball is sh
As the ball emerges from the other end, does it follow path{
A}, path{
B}, or path{
C}?
Explain.
Is ballistic stretching safe?
While this type of stretching may be beneficial for athletes, it carries a risk of injury. Ballistic stretching is generally not recommended for everyday people who want to stay in shape or improve flexibility because there is a risk of straining or pulling a muscle.
What is ballistic method ?Ballistic Technique It is the most traditional method of stretching exercises. This approach incorporates abrupt movements. Just rhythmic activities or movements around a joint can stretch a joint or a muscle. The proper warm-up is crucial before engaging in such a workout.
Using rapid, abrupt motions to promote flexibility, ballistic stretching is a warm-up stretching technique. It is mostly utilised by sportsmen and anyone who exercise regularly to improve muscle strength and range of motion.
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use your knowledge of the collision theory and use the potential energy diagram given to answer questions 1 through 5. which letter represents the activation energy? group of answer choices c none of the above a b
The activation energy for a reaction is illustrated in the potential energy diagram by the height of the hill between the reactants .
What is energy formula?The equation developed by Albert Einstein, which is usually given as E = mc2, showing that, when the energy of a body changes by an amount E (no matter what form the energy takes), the mass (m) of the body will change by an amount equal to E/c2.
What is energy and its unit?Energy can be defined as the ability to do work. The amount of energy possessed by a body is equal to the amount of work it do when its energy is released. Energy is a scalar quantity. The SI unit of energy is Joule.
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The radius of our Sun is 6.96 × 108 m, and its total power output is 3.85 × 1026 W. (a) Assuming the Sun’s surface emits as a black body, calculate its surface temperature. (b) Using the result of part (a), find λmax for the Sun
a) The surface temperature would be 5,778 K and b) λmax for the Sun will be 0.50 μm.
The radius of our Sun is 6.96 × 108m and its total power output is 3.85 × 1026W.
Assuming the Sun's surface emits as a black body, we can use the Stefan-Boltzmann law to calculate its surface temperature.
Applying the law, we get T = (P / 4πσR2)1/4,
where P is the total power output, σ is the Stefan-Boltzmann constant, and R is the radius of the Sun.
Substituting the given values in the equation, we get T = 5,778 K.
Using the result of the previous calculation, we can find the wavelength of maximum emission (λmax) for the Sun.
To do this, we use Wien's displacement law, which states that λmax = 2898/T (in meters),
where T is the temperature of the Sun.
Thus, we get λmax = 0.50 μm.
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A 5.0-m-diameter merry-go-round is initially turning with a 4.0 s period. It slows down and stops in 20 s. Before slowing, what is the speed of a child on the rim (in m/s)? How many revolutions does the merry go round make as it stops (in rev)?
1.53 m/s is the speed of a child on the rim (in m/s) . 3rev revolutions does the merry go round make as it stops (in rev)
d =diameter of the merry-go-round = 5.0 m
r = radius of the merry-go-round = d/2 = 5.0/2 = 2.55 m
T = time period of the merry-go-round = 4.0 s
Wi = initial angular velocity of merry-go-round
Initial angular velocity is given as
Wi = 2π/T
Wi =1.53 rad s⁻¹
Wf = final angular velocity of merry-go-round = 0 rad s⁻¹
t = time taken to stop = 20 s
∅ = angular displacement = ?
n = Number of revolutions made before stopping
Angular displacement is given as
∅ =( Wf+Wi)t/2
∅ + 19.125rad
Number of revolutions are given as
n = ∅ /2π
n = 3rev
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If a comet flies over 50,000 km/h for four hours how far has a travel?
If a comet flies over 50,000 km/h for four hours, then comet has travelled a distance of 2 * 10^5 km.
What is the relationship between speed, distance and time?Speed distance time is the formula that is used to explain the relationship between speed, distance and time. Here, speed = distance ÷ time. We can also say that distance divided by speed will give you the time. Provided you know two inputs, then you can work out the third one.
Given Speed is 50,000 km/h and time is 4 h
We know that distance is speed * time
= 50,000 * 4
= 2 * 10^5 km
Comet has travelled a distance of 2 * 10^5 km.
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radio waves are: radio waves are: a form of sound. a form of light. a type of spectrum.
Answer:
Radio waves can be considered a form of light waves since both are transverse waves (vibrate perpendicular to direction of travel).
Sound waves are longitudinal waves and require a medium (such as air) for propagation.
You shove a chair across the room, causing it to go 663 cm. If you did 209 J of work, what amount force did you exert?
Force of magnitude 31.52 N was exerted on the chair.
What is force?
The definition of force in physics is: The push or pull on a massed object changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force.
Work done: W = 209 J.
Displacement: d = 663 cm = 6.63 m.
Again, work done = force × displacement
Force = work done/ displacement
= 209 J / 6.63 m
= 31.52 N.
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The truss is made of three A-36 steel members, each having a cross-sectional area of 400 mm^2. Determine the horizontal displacement of the roller at C when P = 8 kN.
The horizontal displacement of the roller at C when P = 8 kN of a truss is made of three A-36 steel members, each having a cross-sectional area of 400 mm^2 is 0.0975 mm.
Given cross-sectional area of truss (A) = 400mm^2
P = 8kN
From the diagram we can see that the displacement of point C obtained from member AC is equivalent to the horizontal displacement of roller C.
Then Fca = 5.571kN
The distance between AC (L) = 0.8 + 0.6 = 1.4m
Modulus of Elasticity of Steel (E) = 200,000 MPa
The required horizontal displacement of the roller at C = d
d = Fca x L/A x E
d = (5.571∗1000∗1.40)/(400∗(10^−6)*(200)*(10^6) = 0.0975 mm
Hence the horizontal displacement of the roller at C is 0.0975mm.
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Two identical projectiles were projected at 200 km/h, the first at an angle 60 to the horizontal while the second is at angle 60 to the vertical, which projectile reaches a greater horizontal range?
a) first one
b) second one
c) They have equal ranges.
When i looked at the guide answer it said the answer is c, why is that, shouldn't it be the first one?
R will remain the same as sin2θ is same for 30° and 60°. This is why the two projectiles have equal ranges.
In a nutshell, what is projectile motion?A projectile is an object that is launched into the air and moves in the direction in which it is thrown under the influence of gravity. Only gravity is felt by the item after the initial force that launches it. The trajectory of the object is referred to as its trajectory, and the object is referred to as a projectile.
What is projectile motion and an illustration of it?Any object that is pitched, tossed, shot, flung, hoisted, hurled, cast, or otherwise thrown is a projectile. All of these actions—throwing a ball straight up, kicking a ball and imparting motion at an angle to the horizontal, or simply dropping objects to cause free fall—are instances of projectile motion.
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a 0.400-kg object undergoing shm has ax = -1.40 m/s2 when x = 0.400 m .
The time for one oscillation is approximately 3.44 seconds.
In simple harmonic motion (SHM), the period, T, is given by the formula:
T = [tex]2\pi \sqrt{(m/k)}[/tex]
where m is the mass of the object, k is the spring constant, and x is the displacement from equilibrium.
In this case, the mass of the object is given as 0.400kg and the acceleration at x = 0.400m is given as -1.40m/s². The spring constant can be found using the formula:
k = m × (a / x)
Plugging in the values, we get:
k = 0.400kg × (-1.40m/s²) / 0.400m = -1.40 N/m
Now that we have the value of k, we can use the formula for the period to find the time for one oscillation:
T = [tex]2\pi \sqrt{0.400kg / -1.40 N/m}[/tex] = [tex]2\pi \sqrt{(0.2857142857142857)}[/tex]
T = 2π × 0.5345224838248488
T = 3.4433442859
Therefore, the time for one oscillation is approximately 3.44 seconds.
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A 0.400kg object undergoing SHM has ax = -1.40m/s² when x = 0.400m. What is the time for one oscillation?
What is the work required to stretch a spring with a spring constant k of 2500 n/m by 4. 00 cm?.
The work required to stretch the spring with k spring constant is about 2.0 Joules.
The Elastic Potential formula can be given as:
[tex]E_{p} = \frac{1}{2} kx^{2}[/tex]
The symbols can be explained as:
Ep = Elastic potential energy ( J )
k = Spring constant ( N/m )
x = Spring extension ( compression ) ( m )
Spring constant (k) is given as 2500 N/m
Extension (x) is given as 4.00 cm = 4.00 × 10⁻² m
Work required (w)=?
[tex]W=E_{p} \\W=\frac{1}{2} kx^{2} \\W=\frac{1}{2} X 2500 X (4.00 X 10^{-2})^{2} \\W=1250X (16.00X10^{-2}) \\W=20000X10^{-2} \\W=2J[/tex]
The work required to stretch the spring is about 2.0 Joules.
Work can be defined as measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement.
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The work required to stretch a spring with a spring constant k of 2500 N/m by 4.00 cm is 2 J.
Given that,
Spring constant k = 2500 N/m
Extension of the spring x = 4 cm = 0.04 m
The work done to stretch the spring is given by the formula,
W = 1/2 × k x²
Putting the values in the above formula, we have,
W = 1/2 × 2500 × 0.04² = 2 J
Thus, the required work done to stretch a spring with a spring constant k of 2500 N/m by 4.00 cm is 2 J.
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Is the refractive index of glass is 2 by 3 then the speed of light is?
The refractive index of glass is not a factor in determining the speed of light. The speed of light in a vacuum is always the same and is equal to 299,792,458 meters per second.
The Unchanging Speed of Light: An Exploration of Its ConsistencyLight is one of the most fascinating natural phenomena in the universe. It is an essential part of the everyday lives of humans, allowing us to see the world around us. Its speed, however, remains one of the most remarkable and consistent characteristics of light. This essay will explore the unchanging speed of light and discuss its importance in the world.
Light is composed of particles called photons, which travel through space at a constant speed. This speed, known as the speed of light, is 299,792,458 meters per second in a vacuum. This means that, regardless of the environment, the speed of light will not change. This is significant, as it allows us to calculate the distance between two points in space, or even the age of certain objects in the universe, based on the speed of light.
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Select the correct answer. when do sea breezes occur? a. daytime b. nighttime
c. both day and night d. at thermal equilibrium
The sea breezes occur during the day when land surfaces heats up faster than water surfaces.
The cooler air above the water is moving across the surface of the land to replace the rising heated air as it rises over the land is called sea breezes.
Sea breezes mostly occur during hot days i.e., summer time as there is unequal heating of land and water surfaces. The land surface get heat up first and during the day the land get heat up faster than water surfaces due to which there is high temperature and low pressure.
The winds always blows from the high pressure to low pressure or low temperature to high temperature i.e., from water to land surfaces durning day time and in night time it happens opposite the wind flows from land surfaces to water surfaces
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The sea breeze occurs during the daytime as the land masses heat up faster than water.
The breeze blowing towards the land from the sea is known as sea breeze.
Due to the differences in pressure, the air flows from high pressure areas over the sea to the low pressure areas on the land. In summer there is unequal heating of land and water masses. This results in the formation of sea breeze.
The winds always blows from the high pressure to low pressure or low temperature to high temperature i.e., from water to land surfaces durning day time and in night time it happens opposite the wind flows from land surfaces to water surfaces.
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You pull horizontally on a 50-kg crate with a force of 250 N and the friction force on the crate is 100 N. The acceleration of the crate is
Answer:
F = M a Newton's Second Law
(250 -100) N = 50 kg a
a = 150 N / 50 kg = 3 m/s^2
A ball with a mass of 0.3 kg is placed at the top of a ramp with a height of 1.6 m.
a. What is the potential energy at the top of the ramp?
b. What is the kinetic energy of the ball as it leaves the ramp (touches the ground)?
Please answer both questions and show work
a. The potential energy at the top of the ramp is 4.8 J. (PE = mgh, where m=0.3 kg, g=9.8 m/s2, and h=1.6 m).
b. The kinetic energy of the ball as it leaves the ramp is 4.8 J. (KE = 1/2 mv2, where KE and PE are equal).
(a) The potential energy at the top of the ramp is 4.708J and
(b) The kinetic energy of the ball when it leaves the ramp is also 4.708 J.
We know that,
The total energy of a system remains constant as energy neither be created nor destroyed.
Total energy = Potential energy + Kinetic energy
Potential energy, PE = m×g×h
here, m: mass of ball;
g: acceleration due to gravity
h: Height of the object from the ground as we took the ground as a reference
PE = 0.3 × 9.81 m/s² × 1.6m
or PE = 4.708 J
So, when the ball is at the top of the ramp
PE = 4.708J, KE = 0
Total energy = 4.708 + 0 = 4.708J
Now, as the ball leaves the ramp and touches the ground (h=0) potential energy becomes zero.
hence, Total energy = PE + KE
or 4.708 = 0 + KE
KE = 4.708 J
Therefore, (a) The potential energy at the top of the ramp is 4.708J and
(b) The kinetic energy of the ball when it leaves the ramp is also 4.708 J.
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a specialist in the study of outbreaks of disease within a population group is known as a/an _____.
A specialist in the study of outbreaks of disease within a population group is known as an epidemiologists.
Epidemiologists are there to conduct investigations wherever there is an epidemic of illness or any other type of threat. Epidemiologists are frequently referred to as "Disease Detectives" since their job is to investigate diseases in order to find out what causes them, who is at risk of contracting them, how to restrict the disease's spread, and how to stop it from occurring again. So a specialist in the study of outbreaks of disease within a population group is known as an epidemiologist.
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if your inboard/outboard boat runs aground, what action should you take in addition to shifting the weight away from the point of impact? boat us
Put your boat in forward motion only. Instead, turn off the car and raise the outdrive. Should you take any additional action in addition to moving your weight away from the site of impact displacement
What is displacement?The concept of displacement denotes the notion that an object has moved or have been relocated. An object's positional change is referred to as "displacement."
What is a sentence example of displacement?Its 2-liter, 4-cylinder engine now has 2.4 liters of displacement and 160 horsepower instead of 146. For the majority of residential uses, automobiles with engines under 1000 cc are sufficient.
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generally speaking, deserts are located in places where air masses are usually ________.
" Deserts are located in the places where the air masses are usually descending."
Near 30 degrees north latitude and 30 degrees south latitude, when the warm equatorial air starts to descend, are where the majority of the world's deserts are found. Large amounts of water from the surface of the land are vaporised by the dense, warming, descending air. The environment that results is quite dry.
Large sand-filled areas of arid land are known as deserts. These places lack significant water bodies and have little to no vegetation. In these places, the precipitation is very scarce. Deserts control over one-fifth of the surface on Earth.
The volume of air at a considerable, uniform temperature, pressure, and humidity is known as air mass. The air masses can spread out in any direction for kilometres. Polar, Arctic, Equatorial, Tropical, etc., are some examples of air masses.
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How much work does a 70 kg student do when she runs up a 3,227 m hill?
Answer:
2,213,722 J
Explanation:
You want to know the work done by a 70 kg student running up a 3227 m hill.
WorkThe work is the product of force and distance. The force is the product of mass and acceleration.
W = F·d = m·g·d
W = (70 kg)(9.8 m/s²)(3227 m) = 2,213,722 J
The student does 2,213,722 joules of work.
__
Additional comment
1 kg·m²/s² = 1 J
We trust you can tell the difference between m representing mass, and m representing the unit meters. 'g' is the acceleration due to gravity. The value usually used in problems like this is 9.8. The accepted standard value is 9.80665. A value sometimes used when precision is not required is 10 m/s².
The peak current through a capacitor is 20.0mA . Part A: What is the current if the emf frequency is doubled?Part B: What is the current if the emf peak voltage is doubled (at the original frequency)?Part C: What is the current if the frequency is halved and, at the same time, the emf is doubled?
A. The peak current through the capacitor is 20.0 mA if the frequency of emf is doubled = 40 mA
B. If the emf peak voltage is doubled (at the original frequency) = 40 mA
C. The current if the frequency is halved and, at the same time, the emf is doubled = 20.0 mA
The peak current = 20.0 mA
{v / [tex]\frac{1}{wc}[/tex] ) = wvc = 2πfvc = 20.0 mA = I₁
A. If the emf frequency is doubled
I₂ = 2f
= 2π (2fvc)
= 2 (2πfvc)
= 2 (20.0)
= 40 mA
B. If the emf peak voltage is doubled (at the original frequency):
v₂ = 2v₁
= 2πf (v₁) c
= 2π (2v) c
= 2 (2πfvc)
= 2 (20.0)
= 40 mA
C. The current if the frequency is halved and, at the same time, the emf is doubled:
f₂ = [tex]\frac{1}{2}[/tex] f₁ and v₂ = 2v₁
= 2πf₁v₁c
= 2π ( [tex]\frac{1}{2}[/tex] f₁) (2v) C
= 2πfvc
= 20.0 mA
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The planetary system which predicted stellar parallax (although such parallax was not visible) was the (blank) theory?
The planetary system which predicted stellar parallax (although such parallax was not visible) was the holocentric theory.
What is stellar parallax?
Stellar parallax is the apparent shift in position of any nearby star (or other object) against the background of distant objects, and it is used to calculate the object's distance (via trigonometry).
The parallax is thought to be half of this maximum, roughly equivalent to the observational shift caused by the Earth's and Sun's different positions, with a baseline of one astronomical unit.
When we observe the position of a star over the course of a year, we can see how it changes. A year after the first measurement, it will return to the same position. This effectively establishes the Earth's orbit.
Therefore, stellar parallax is supported by the holocentric model.
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for a moving object, the force acting on the object varies directly with the object's acceleration. when a force of 10 n acts on a certain object, the acceleration of the object is 2 /ms2. if the acceleration of the object becomes 9 /ms2, what is the force?
According to Newton's Second Law, an object's acceleration is a function of the overall net force that is acting on it. The net force acting on the item, its mass, and its acceleration as a result of the applied force are all represented algebraically by this.
What is the equivalent of a newton?A newton is equal to 100,000 dynes in the centimeter-gram-second (CGS) system or approximately 0.2248 pounds inside the foot-pound-second (English, usually customary) system.
Why are forces measured in Newtons?The letter N, which stands for "Newtons," is the unit of force measurement most frequently used. It bears Isaac Newton's name, as you probably have guessed. A force of 1 Newton is needed to accelerate a mass of 1 kilogram (kg) by 1 meter per second squared.
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