The decimal place moves the left when we convert smaller unit to larger units. Decimal place moves to the right when larger unit converts to smaller units. When centimeter is converted to meters, decimal place moves to the left.
What is decimal place?Decimal places are number of digits coming after the decimal point. The conversion of bigger units to smaller units of amount or any physical quantity move the decimal place to the left and when the reverse is done, decimal place moves to the right side.
Hence, centimeters to meters moves decimal place to left.
megameters to meters - right
kilometers to millimeters - right
micrometer to millimeters - left
millimeters to kilometer - left.
One centimeter = 0.01 m
Hence there are 100 cm in 1 m.
There are 100 years in one century and 1000 years in a millennium.
One millimeter is 10⁻³ m. Then there are 1000 mm in one m.
One microliter is 10⁻⁶ L. Then there are 10⁶ microliters in one liter. There are 1000 m in one kilometer. One megagrams is 10⁶ grams.
Find more on length units:
https://brainly.com/question/1006456
#SPJ1
a space shuttle burns fuel at the rate of 13,000kg in each second. find the force exerted by the fuel on the shuttle if in 2s the shuttle experiences a change in momentum of 325,000 kg m/s. (
The fuel pulls the shuttle with a force acting of 1.625 105N. Noticing any change in the object's state of motion is one approach to identify a force operating on it.
What forces are at work on the human body?Recognize many categories or types of forces and how each might have a different impact on the human body. There are three different categories of force: friction and normal force, contact and non-contact force, and internal and external force.
The force on a body expressed as a change in momentum is,
where F is the force the fuel exerts on the shuttle, P is the change in momentum it experiences, and T is the entire time needed.
Considering the query we have,
ΔP=325000=3.25×10⁵kg-m/s
t=2 second
By substituting the required values in equation (1) we get;
Hence, the force exerted by the fuel on the shuttle is 1.625×10⁵N.
To know more about force acting visit:
brainly.com/question/17777112
#SPJ4
Which of these was NOT seen telescopically by Galileo?
O A. sunspots
O B. Four moons around Jupiter
O C. craters and mare on the Moon
O D. Venus' phase cycle
O E. stellar paralla
Nearby stars appear to move in comparison to background stars that are farther away due to Earth's rotation around the Sun. This mobility, which is not "actual" moving, is known as stellar parallax.
Why is parallax so important?Parallax is one of the most important methods of distance measurement used by astronomy. Although it is quite accurate, it can only be used for stars that are close by. The method compares the background motion of further away objects to the moving object of nearby objects.
What is revealed by stellar parallax?Stellar parallax, which may be used to determine an object's distance using trigonometry, is the apparent shift in location of any nearby star (or other object) when contrasted to other objects at a distance.
To know more about Stellar Parallax visit:
https://Brainly.com/question/29352944
#SPJ4
.Two wooden blocks A and B have respective masses of 3.0 kg and 4.0 kg and are connected with an
inextensible cord. If the blocks are placed on a horizontal frictionless surface and a force of 8.0 N is
applied to A, find the tension in the connecting cord.
The tension in the connecting cord is 4.72 N.
What is tension?Tension is defined in physics as the pulling force transmitted axially by a string, rope, chain, or similar object, or by each end of a rod, truss member, or similar three-dimensional object; tension can also be defined as the action-reaction pair of forces acting at each end of said elements.
Given that:
Mass of block A (mₐ) = 3.0Kg
Mass of block B (mb) = 4.0 kg
Force (F)= 8.0N
Assume a = acceleration of the blocks.
mₐ(a) + mb(a) = 8
3a + 4a = 8
7a = 8
a = 8/7
a = 1.142 m/s²
Suppose T to be the tension in the string.
If we take a look at the forces acting on the first block, then:
F - T = (a)
T = F - (a)
T = 8- 3(1.142)
T = 8-3.428
T =4.72 N
To learn more about tension, click here:
https://brainly.com/question/24067266
#SPJ1
What is the maximum number of cells you can select for the set objective variable in the solver parameters dialog box?.
The defined objective variable can only have one cell selected by the user. Another of the three key parameters when attempting to use the Excel solvers program is the set target variable cell.
What is a scientific variable?Anything that may vary or be altered is a variable. To put it another way, it refers to any variable that can be altered, taken into account, or determined during an experiment. Different kinds of variables are used in experiments. A quantity which value can fluctuate is said to be a variable.
How can one recognize variables?When doing an investigation, the explanatory variables is what you alter, and the response variable that's what occurs as a result of that change. This is an excellent route to conceive of variable.
To know more about variables visit:
https://brainly.com/question/29646542
#SPJ4
Fossil fuels, hydroelectric power, and wind power ultimately get their energy from _______. *
potential energy
the Sun
Earth's nuclear energy
greenhouse gases
Fossil fuels, hydroelectric power, and wind power ultimately get their energy from sun. Hence, the correct option is B. the sun.
What is Energy?On earth, energy comes in a variety of shapes and sizes. The sun is regarded as the earth's fundamental source of energy. Energy is a quantifiable property that can be transferred from an item to perform work in physics. Thus, the ability to perform any kind of physical action can be described as having energy. Thus, we can sum up the definition of energy as follows:
The capacity to work comes from energy.
Hydrocarbons, which are made up of carbon, hydrogen, and oxygen, are what we refer to as fossil fuels. These are derived from the breakdown of living things like animals and plants. Nearly all of the fossil energy comes from the sun.
A secondary source of solar energy, hydroelectricity is produced when water flows from a high potential to a low potential. It is a more environmentally friendly option than electricity because it doesn't emit waste, smoke, or heat.
High-speed wind is used to produce the renewable energy known as wind power. It is a renewable source of energy that is used to power wind turbines.
If you need to learn more about hydroelectric power, Visit:
brainly.com/question/8934285
#SPJ4
When a light switch is turned on in a DC circuit, the average speed of electrons in the lamp is:A. The speed of lightB. The speed of sound waves in metalC. Dependent on how quickly each electron bumps into the next electron.D. Less than 1 cm/s.
The average speed of the electrons in a lamp when a light switch is flipped on in a DC circuit is less than 1 cm/s.
When the switch is flipped to the on position, the circuit is closed and a potential difference in electricity is created between the two ends of the external circuit. Nearly as fast as light, electromagnetic energy and information can go along a cable. The electrons themselves move considerably more slowly. The electromagnetic wave that is resonating through the electrons is what causes it to move almost as quickly as light. The actual propagation speed depends on the wire's diameter and electrical characteristics, such as its inductance, although it typically hovers around 90% of the speed of light, or 270,000 km/s.
To learn more about speed click here https://brainly.com/question/28224010
#SPJ4
>
Next
3
Introduction to the Physical Sciences: Mastery Test
Drag each tile to the correct box.
A student writes down several steps of the scientific method. Put the steps in the best order.
Analyze the experimental data.
Make a hypothesis.
Conduct an experiment.
Communicate the results.
The Correct Sequence is:
Make a hypothesis.Conduct an experiment.Analyze the experimental data.Communicate the results.What is the Scientific method?
The scientific method is the approach that scientists use to understand, answer, and explain natural phenomena and events.
The method follows a series of steps that begin with observation, asking questions, conducting background research, and leading to the formation of hypotheses that deny the possibility of explaining the phenomenon to its limits.
Explanation:
Hypotheses are then tested by experiments, and results can be provided to prove or disprove the hypothesis. Results are analyzed and conclusions are drawn based on them. After analyzing the results needs to published and communicated.
Hence, the following is the correct sequence.
To learn more about Scientific method, click on the given link: https://brainly.com/question/17216882
#SPJ1
A student writes down several steps of the scientific method , the correct order of steps are discussed below
The proper order is:
1.Make a hypothesis.
2.Conduct an experiment.
3.Analyze the experimental data.
4.Communicate the results.
Experiments are used to test hypotheses, and the results can either support or refute the hypothesis. On the basis of the results, conclusions are drawn. The results must be published and communicated after they have been analyzed.
Therefore, the order that follows is correct.
How does the scientific method work?
Scientists use the scientific method to comprehend, respond to, and explain natural phenomena and events. The method involves observing the phenomenon, asking questions, conducting background research, and coming up with hypotheses that deny the possibility of fully explaining it.
Learn more about scientific method :
brainly.com/question/1334245
#SPJ1
a copper wire is 20 m long on a winter day when the temperature is −12∘c. By how much does its length increase on a 26 ?C summer day?Express your answer using two significant figures.
The length of the copper wire at -12°C or 261 K is 20 m. The length will increases to 23 m at 26 °C or 299 K.
What is thermal expansion ?As the temperature increases, the kinetic energy of particles in a solid increases to weaken the intermolecular attractive force between them. As the force weakens, the particle - particle gas increases, results in expansion of the material.
The length of a solid material increases relatively in summer due to thermal expansion. The length of copper wire at winter is given 20 m.
temperature = - 12 °C or 261 K (-12 +273)
temperature at summer = 26 °C or 299 K
Length of the wire at 299 K = (299 × 20 m) / 261 = 23 m
Therefore, the length of copper wire in summer will be about 23 m.
Find more on thermal expansion :
https://brainly.com/question/14092908
#SPJ1
A 1.6-m-tall woman stands 2.0 m in front of a convex funhouse mirror with a focal length of 2/3 m . Use ray tracing to determine the location of her image. Use ray tracing to determine height of her image.
The location of the height of her image is calculated to be 1.19 m behind the mirror.
We must establish a frame of reference in order to characterize the situation. To determine an object's position, we frequently utilize the Earth as a point of reference.
The important thing to remember in this situation is that we should use a reference that, in most cases, is not stationary and is instead moving.
Given that,
Object distance u = -2 m
Focal length f = - 0.75 m
By mirror equation,
1/v + 1/u = 1/f
1/v = -1/0.75 + 1/2
On solving we get,
1/v = -1.34 + 0.5
v = - 1.19 m
Thus, the location of her image is 1.19 m behind the mirror.
To know more about images:
https://brainly.com/question/30114650
#SPJ4
i points A spring is hanging down from the ceiling, and an object of mass m is attached to the free end. The object is pulled down, thereby stretching the spring, and then released. The object oscillates up and down, and the time T required for one complete up-and-down oscillation is given by the equation T -2were is known as the spring constant. What must be the dimension of k for this equation to be dimensionally correct? When showing your work to turn in, make sure to show that you found the unit of k using dimensional analysis rather than by looking it up. Show (in the work you turn in) that this is equivalent to the units of N/m. This answer has not been graded yet. 2 2- 2 づ丁2- .C
Question 1
T=2*pi*sqrt(m/k)
dimension of T=sec
dimension of 2*pi=nil(dimensionless)
dimension of m=kg
equation dimension
sec=sqrt(kg/k)
sec^2=kg/k
k=kg/sec^2
so dimension of k will be
MT^(-2)
dimension of N/m=kgms^(-2)/m=kgs^(-2) so it is same
Question 2
F=Gm1*m2/r^2
Dimension of F=MLT^(-2)
MLT^(-2)=G*M*M/L^2
G=ML^3T^(-2)/M^2=M^(-1)L^(3)T^(-2)
To know more about dimension visit:
https://brainly.com/question/28688567
#SPJ4
What is matrix and what is its composition?
The matrix is the set of extracellular materials that will form a certain tissue. Through this there will be a physiological integration of the cells.
What is matrix and what is it's composition?In the matrix there will be different macromolecules, mainly collagen, enzymes, glycoproteins, among others which will give support to the cells that will be immersed in the matrix. It will also be involved in the process of cell multiplication and cell movement, since it will allow communication between the different cells to coordinate their cell functions.
The extracellular matrix is going to be composed, broadly speaking, of two components: interstitial matrix and the basal membrane. The interstitial matrix is one that will be formed by polysaccharides and fibrous proteins that gives it the characteristic to be able to cushion the compressions to which it may be subjected.
To learn more about matrix visit: https://brainly.com/question/14748005
#SPJ1
A 14,700 N car is traveling at 25 m/s. The brakes are applied suddenly, and the car slides to a stop. The average braking force between the tires and the road is 7100 N. How far will the car slide once the brakes are applied? Using energy analysis?
To find the distance that the car slides once the brakes are applied, we can use energy analysis. We know that the initial kinetic energy of the car is given by:
E_i = 0.5 * m * v^2 = 0.5 * 14700 N * 25 m/s^2 = 148750 J
And the final kinetic energy of the car is zero, since it comes to a stop. The change in kinetic energy is therefore:
ΔE = E_f - E_i = 0 - 148750 J = -148750 J
The work done by the brakes is equal to the change in kinetic energy, so we can write:
W = ΔE = -148750 J
The braking force is given as 7100 N, so the distance that the car slides is given by:
d = W/F = -148750 J / 7100 N = -20.9 m
Therefore, the car will slide a distance of approximately 20.9 meters once the brakes are applied.
________ is the maximum load of solid particles a stream can transport in a unit of time.
The true response is A. The greatest amount of solid particles that a stream can transport in a given amount of time is known as capacity.
What Sediment Type Has the Largest Amount?The categorization of the sediment is based on their size. From smallest to largest in size, they may be divided into the following categories: clay, silt, sand, pebbles, cobble, and boulder.
Which Sediment Sizes Will A Stream Move The Easiest?Small sand grains between 0.2 mm and 0.5 mm are the particles in a stream that dissolve the most quickly. Any object that is smaller or larger needs more water moving past it in order to be degraded and entrained inside the flow.
Competence is a measure of a person's skill, whereas capacity is the greatest load of solid particles a river can move in a unit of time. The capability of a stream to move particles as per size rather than amount.
To learn more about Sediment Stream, visit:
https://brainly.com/question/2621857
#SPJ4
The Correct Question is:
________ is the maximum load of solid particles a stream can transport in a unit of time.
A) Capacity
B) Competence
C) Silt
D) Bed Load
A ride at an amusement park moves the riders in a circle at a rate of 6.0 m/s. if the radius of the ride is 9.0 meters, what is the acceleration of the ride? 54 m/s 2 4.0 m/s 2 0.67 m/s 2 0.075 m/s 2
A ride at an amusement park moves the riders in a circle at a rate of 6.0 m/s, then the acceleration of the ride is calculated as 4.0 m/s².
What is centripetal acceleration?The property of the motion of an object traversing circular path is known as centripetal acceleration. An object that is moving in circle and also has an acceleration vector pointed towards center of that circle is called Centripetal acceleration and the unit of centripetal acceleration is m/s².
As given velocity, v= 6m/s
radius, r= 9m
As we know that, centripetal acceleration = v²/r
= 6²/9
Hence, centripetal acceleration = 4 m/s²
To know more about centripetal acceleration, refer
https://brainly.com/question/22103069
#SPJ4
how much charge must pass by a point in a wire in 10 s for the current inb the wire to be 0.50 a? A.20 CB.2.0 CC.5.0 CD.0.050 C
Answer:
I = Q / t definition of electric current
Q = I * t = .5 C/s * 10 s = 5 Coulombs
(C) 5 Coulombs
Each of the different colors that make up white light has a different?
Answer:
wavelength
Explanation:
red has the longest wavelength, violet has the shortest (ROYGBIV)
A car of mass 1,000 kg begins stationary on a road at the top of a mountain, at a height h = 3,000 m. The car then rolls freely down a winding road, travelling a total distance of 5 km, to reach the height h = 2,000 m. Assume g = 9. 8 ms-2:.
Energy which is lost by the car on descent is 980×10⁴ J
Let us calculate the energy of car at various heights.
At height 3000 m:
Mass (m) = 1000 Kg
Given, Acceleration due to gravity (g) = 9.8 m/s²
Height (h) = 3000 m
Energy (E) = To be calculated
E = mgh
E = 1000 × 9.8 × 3000
E = 29400000 J
At height 2000 m:
Mass (m) = 1000 Kg
Acceleration due to gravity (g) = 9.8 m/s²
Height (h) = 2000 m
Energy (E) =?
E = mgh
E = 1000 × 9.8 × 2000
E = 19600000 J
Finally, we shall determine the the energy lost
Energy calculated 3000 m = 29400000 J
Energy calculated 2000 m = 19600000 J
Energy lost =?
Energy lost = Energy at 3000 m – Energy at 2000 m
Energy lost = 29400000 – 19600000
Energy lost = 980×10⁴ J
Learn more about potential energy
brainly.com/question/8664733
#SPJ4
The amount of energy lost by the car when it descended from a height of 3000 m to 2000 m is 980 × 10⁵ J.
Given that,
Mass m = 1000 kg
Acceleration due to gravity g = 9.8 m/s²
Height h = 3000 m
Energy E = ?
We know that, E = m g h = 1000 × 9.8 × 3000 = 29400000 J = 294 × 10⁵ J.
At height 2000 m, the energy is,
E = m g h = 1000 × 9.8 × 2000 = 19600000 J = 196 × 10⁵ J.
The difference in energies at the height 3000 m and 2000 m is nothing but the energy lost.
So, the energy lost = 29400000 J - 19600000 J = 980 × 10⁵ J
To know more about energy:
https://brainly.com/question/28887342
#SPJ4
If you and two other friends concurrently pull on
an object with the same force, each spread out
evenly, like in the diagram, describe what would happen!
If two friends simultaneously pull on an object with the same force, each spreading out evenly, then the object will move in a particular straight direction where the force is pulling.
What is the significance of the force?force is applied to a substance, and as a result, the displacement of an object is seen, which affects the directions and the movement of the substance, such as when a high-intensity force changes the velocity more while a lower-intensity force leads to a low velocity.
Hence, if two friends simultaneously pull on an object with the same force, each spreading out evenly, then the object will move in a particular direction where the force is pulling.
Learn more about the significance of the force here.
https://brainly.com/question/13191643
#SPJ1
A 0.105 kg hockey puck is traveling at 12 m/s when it is struck by a stick. As a result, the puck travels at 15m/s in the opposite direction. If the contact between the stick and puck lasted 0.05 s, what was the force?
The force exerted on the hockey by the stick is -56.7 N.
What is force?Force is the product of mass and acceleration.
To calculate the force on the hockey, we use the formula below.
Formula:
F = m(v-u)/t........................ Equation 1Where:
F = Forcem = Mass of the hockeyv = Final velocityu = Initial velocityt = TimeFrom the question,
Given:
m = 0.105 kgv = -15 m/s (opposite direction)u = 12 m/st = 0.05 sSubstitute these values into equation 1
F = 0.105(-15-12)/0.05F = -56.7 NHence, the force on the hockey is -56.7 N.
Learn more about force here: https://brainly.com/question/12785175
#SPJ1
The electric potential in a region of space varies as V=by/(a2+y2)V=by/(a2+y2). Determine the components of E⃗E→. Express your answers in terms of the variables aa bb yy separated by commas..
Answer: E = (0, -(b/(a^2+y^2)))
Explanation:
The electric field is given by the negative gradient of the electric potential: E = -∇V.
In this case, the electric potential V is a function of y only, so the electric field will only have a y-component. The y-component of the electric field can be calculated using the gradient:
Ey = -(∂V/∂y)
= -(b/(a^2+y^2))
The x-component of the electric field is zero because the electric potential does not depend on x.
Therefore, the electric field is given by:
E = (0, Ey)
= (0, -(b/(a^2+y^2)))
How many m/s is 60.0 km/h?
O 0.02 m/s
O 0.06 m/s
O 16.7 m/s
O 1,000 m/s
which projectile spends more time in the air, the one fired from 30∘ or the one fired from 60∘?
The bullet launched from 60 travels faster vertical velocity than the one shot from 30, therefore it flies higher for a longer period of time.
How does a projectile's vertical component of velocity impact its horizontal component?
Gravity causes a vertical acceleration with a value of 9.8 m/s/s downward, whereas a projectile's horizontal velocity is constant (a number that never changes). A projectile's vertical velocity varies by 9.8 m/s each second.
Is there ever zero vertical velocity?
When a projectile reaches its maximum height, the vertical component of velocity may be zero. Immediately before to the direction of the vertical component changing and the item changing course, a projectile's vertical component is at its highest point.
To know more about vertical velocity visit:
brainly.com/question/11679227
#SPJ4
The terrestrial planet cores contain mostly metal because
O convection carried the metals to the core.
O metals condensed first in the solar nebula and the rocks then accreted around them.
O the entire planets are made mostly of metal
O metals sank to the center during a time when the interiors were molten throughout.
O radioactivity created metals in the core from the decay of uranium.
The metals were transported to the core via o convection.Higher temperatures are preferable for condensing the heavier rock and metallic elements.
Why are planets' metallic cores?As the rocky planets formed, this concentration in metals close to the sun was incorporated into them.Iron and nickel, two readily available metals, moved toward the planet centers, where gravitational pull was highest, as the planetary systems developed.
Do planets with a rocky core possess metal cores?Unlike other planets which lack a solid surface, terrestrial planets are composed of rocks or metals and have a hard surface.A few moons, a molten hard rock core, and landforms like cliffs, valleys, volcanoes, and craters are other characteristics of terrestrial planets.
To know more about terrestrial planet visit:
https://brainly.com/question/7952964
#SPJ4
A rower intends to row his raft at its top speed of 1.5 m/s from the south bank of a river to a point
directly opposite on the north bank. He fails to recognise the river current which pulls a Jog west at
0.50 m/s, What is the raft's resultant velocity with respect to the bank?
The resultant velocity of the raft is calculated using the triangle law. The resultant velocity is 0.75 m/s.
What is velocity ?The velocity of a moving object is the measure of the distance it covered per unit time. It is a vector quantity and have both direction and magnitude. If an object is moving through another moving object such as a river, the net velocity of the object will be different from its original velocity.
Given that, the raft is moving through a river to the north with a speed of 1.5 m/s and the river current has the velocity of 0.50 m/s. The river current is moving in horizontal direction and the resultant velocity can be determined using the Pythagorean theorem.
Thus, the resultant velocity is the hypotenuse of the triangle.
then resultant velocity = √(1.5² + 0.5² ) = 0.75 m/s
Therefore, the resultant velocity of the raft is 0.75 m/s
To find more on resultant velocity, refer here:
https://brainly.com/question/24264932
#SPJ1
A person rides a Ferris wheel that turns with constant angular velocity. Her weight is 546.0 N. At the top of the ride her apparent weight is 1.500 N different from her true weight. If the angular speed of the Ferris wheel is 0.0250 rad/s, what is its radius?
The radius of the Ferris wheel is 0.5 m if its angular speed is 0.0250 rad/s.
To find the radius of the Ferris wheel, we can use the formula for the centripetal force, which is:
F = m * (ω^2) * rWhere:
F is the apparent weight differencem is the true weightω is the angular velocityr is the radiusWe can rearrange the equation to solve for r:
r = F / (m * (ω^2))Plugging in the given values:
r = (1.5 N) / (546 N * (0.0250 rad/s)^2)Solving for r:
r = 0.5 mSo the radius of the Ferris wheel is 0.5 meters.
Learn more about Ferris wheel here: brainly.com/question/27007848
#SPJ4
Which evidence is most likely used to indicate the beginning of solar system formation materials combined?
A mass was created by the combination of various materials. There is a good chance that this information will be utilized to show how the solar system formed in its early stages.
One of a body's fundamental characteristics is mass. Before the discovery of the atom and particle physics, it was widely considered to be connected to the amount of matter in a physical body. It was discovered that, in theory, the same amount of matter might contain various atoms and elementary particles. One of a body's fundamental characteristics is mass. Before the discovery of the atom and particle physics, it was widely considered to be connected to the amount of matter in a physical body. Theoretically, although having the same amount of stuff, different atoms and elementary particles were discovered to have distinct masses.
Learn more about mass here
https://brainly.com/question/18064917
#SPJ4
The evidence that most likely indicates the beginning of solar system formation is that materials were pulled together by gravity.
What formerly served as a sign that the solar system was first forming?Formation. About 4.5 billion years ago, a dense cloud of interstellar gas and dust gave rise to our solar system. The supernova shockwave from a nearby exploding star, or supernova, may have caused the cloud to collapse. This dust cloud burst into a spinning disk of material known as a solar nebula when it disintegrated.
Which 4 stages of the solar system's creation are there?According to scientists, Earth, and other terrestrial planets, it was created several billion years ago when hot blobs of molten metal and rock coalesced from the combination of dust and gas. They underwent four stages of creation before becoming distinct planets: Cratering, Surface Evolution, Flooding, and Differentiation
To know more about solar systems visit:
https://brainly.com/question/12075871
#SPJ4
A surface has a work function 1. 70 ev and has light of wavelength 400 nm shone on it. What is the kinetic energy of the photoelectrons emitted?.
The kinetic energy of the photoelectrons emitted is calculated as 2.23 *10^-19 J .
What is meant by photoelectron?Photoelectrons are the electrons which are produced when energetic photon of radiation strikes a molecule. Photoelectron is an electron ejected from atom, molecule, or solid by an incident photon.
In terms of behavior and properties, photoelectrons are no different from other electrons.
E= h c/λ
= 6.6 *10^-34 * 3 * 10^8/400 * 10^-9
= 4.95 *10^-19 J
Work function = 1.7 eV= 1.7 * 1.6 *10^-19
= 2.72 *10^-19 J
Hence, kinetic energy of photo electrons emitted will be;
= 4.95 *10^-19 J - 2.72 *10^-19 J
kinetic energy = 2.23 *10^-19 J
To know more about photoelectrons, refer
https://brainly.com/question/12749779
#SPJ4
Why is the weight of an object different on Earth and the moon?
Answer:
values of g (acceleration due to gravity) are different on earth vs. moon
Explanation:
Weight = mg
m = mass
g(earth) = 9.8 m/s²
g on the moon is different because the moon has less mass than earth.
g(moon) = 1.625 m/s²
For example, if your mass on earth is 68 kg, your weight on earth is:
W = (68 kg)(9.8 m/s²) = 666.4 N
On the moon, your mass is still the same (68 kg), but your weight would be:
W = (68 kg)(1.625 m/s²) = 110.5 N
A.) Calculate the effective value of g, the acceleration of gravity, at 6700m , above the Earth's surface.
B.) Calculate the effective value of g , the acceleration of gravity, at 7000km , above the Earth's surface.
The effective value of g, the acceleration of gravity, at 6700m , above the Earth's surface is 9.79 m/s².
What is the acceleration of gravity?The acceleration of an object in free fall within a vacuum is termed as gravitational acceleration (and thus without experiencing drag).Solution:Given:
G=gravitational constant = 6.67x10⁻¹¹ m³/(kg.s²)
M=the Earth's mass = 5.97x10²⁴ kg
r= Earth's radius = 6371 km +6700m
r=6371000m+6700m
r=6377700m
For gravitation we use following:
F=GmM/r^2
which on further derivation gives
ma=GmM/r^2 , which results in
a=GM/r^2
Now putting the values in a=GM/r^2
a=6.67x10⁻¹¹ m³/(kg.s²)*5.97x10²⁴ kg/6377700^2
a=9.79 m/s²
Hence, The effective value of g, the acceleration of gravity, at 6700m , above the Earth's surface is 9.79 m/s².
then at 7000km i.e. 7000000m
All will be same except r= 6371000m+7000000m
r=13371000m and
r^2 =1.78*10^14.
putting values
a=6.67x10⁻¹¹ m³/(kg.s²)*5.97x10²⁴ kg/1.78*10^14.
a=2.23*10^28 m/s.
to know more about acceleration of gravity visit
https://brainly.com/question/18402794
#SPJ4
fundamental forces lab flvs physical science answers
A system of laws is held to a standard by fundamental law, also known as organic law.
What are fundamental laws?The majority of state and federal constitutions are regarded as prime instances of basic law. A system of fundamental laws lays out the guiding principles upon which all other laws must be based.
This type of law is employed in a constitution to establish the fundamental categories of rights and obligations for both citizens and the government.
For instance, the US Constitution outlines some of the most important rights of US citizens while also granting the government both powers and constraints.
Therefore, A system of laws is held to a standard by fundamental law, also known as organic law.
To learn more about Fundamental laws, refer to the link:
https://brainly.com/question/17829062
#SPJ1