A 75 force is applied to the side of a crate resting on a level floor. The crate has a mass of 25kg. If the coefficient of static friction is .15, is the 75 N force enough to make the crate accelerate? Explain why or why not.
Answers
shows up as a force resisting the horizontal pull. So we really only
need to know the crate's weight.
Weight = (mass) x (gravity) = (25) x (9.8) = 245 newtons.
0.15 of 245 newtons = 36.75 newtons.
The force due to friction that's holding the crate back, not letting it start
sliding, is 36.75 newtons. If you push it with 75 newtons of force, then
that IS enough to make the crate accelerate.
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a change in color
a change in frequency
a change in speed
Answers
Answer:
A change in speed
Explanation:
Light bends when it moves at a particular angle into a medium that has a different refractive index than the one it was coming from.
This bending is as a result of the change in speed of light as it enters the medium with a different refractive index.
This action is known as Refraction of light.
Refraction depends on the change in speed of light as it changes media and the angle of refraction depends on the angle of incidence of the ray of light and the refractive index of the material.
Answers
Answer: The power of 10 in the given value is 5.
Explanation:
Scientific notation is defined as the representation in which a number is expressed in the decimal form. That means always written in the power of 10 form. The decimal place is put after 1 digit.
We are given a numerical value of 157,821
Converting this into scientific notation, we get:
Hence, the power of 10 in the given numerical value is 5.
so answer is 5
Answers
Answer:
Curiosity
Explanation:
The word that is more in line with this definition is curiosity, a good scientist is characterized by being extremely curious about the phenomena that surround him, a very clear example of this was Einstein, who said "I have no special talent. I am only passionately curious. "
the force of friction
the magnetic force from Earth's north pole
the Sun's gravity
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Maintaining an orbit has nothing to do with the satellite's speed.
ANY (tangential) speed is enough to stay in orbit, if the satellite
just stays away from Earth's atmosphere.
If the satellite completely stops moving 'sideways' at all, and just
hangs there, then the forces of gravity between the satellite and
the Earth will pull them together ... the satellite will fall into the
atmosphere and then to the ground.
Centripetal force which makes it attract towards the earth and makes it able to move around
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It's always less than 1 .
Also, it's commonly expressed as a percent. To get the percent,
just multiply the number by 100.
Answers
There are two ways to make the statement true:
#1). Exchange the places of the words "Opposite" and "like".
#2). Exchange the places of the words "repel" and "attract".
Either ONE of these changes will make the statement true.
Doing BOTH of these changes will leave it false.
Answer:
False. Opposite electric charges will attract, and like charges will repel.