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Artist 52 [7]
3 years ago
8

A crate of books rests on a level floor. To move it along the floor at a constant velocity, why do you exert less force if you p

ull it at an angle Ï above the horizontal than if you push it at the same angle below the horizontal?
Physics
1 answer:
Mademuasel [1]3 years ago
8 0

Answer:should be a matter of vector analysis.

Pulling above the horizontal has less surface area for the opposing friction

Explanation:

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A small sandbag is dropped from rest from a hovering hot-air balloon. (assume the positive direction is upward.) (a) after 1.5 s
marishachu [46]

solution:

We know v0 = 0, a = 9.8, t = 4.0. We need to solve for v

so,

we use the equation:

v = v0 + at

v = 0 + 9.8*4.0

v = 39.2 m/s

Now we just need to solve for d, so we use the equation:

d = v0t + 1/2*a*t^2

d = 0*4.0 + 1/2*9.8*4.0^2

d = 78.4 m

3 0
3 years ago
In this image of Earth and the Moon from the Sim, what does the circle around Earth represent?
lidiya [134]

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5 0
3 years ago
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Sphinxa [80]

Answer:

Ur answer is Stationary Front

Explanation:

Stationary Front is when a cold air mass and a warm air mass but are at a standstill the boundary is called Stationary Front.

3 0
2 years ago
A quantitative description of kinematics involves using ___ th describe the motion
Semmy [17]

Answer:

numbers

Explanation:

Virtually all unimaginable processes can be described as the movement of certain objects. To analyze and predict the nature of the movements that result from the different kinds of interactions, some important concepts such as momentum, force and energy have been invented. If momentum, force, and energy are known and expressed in a quantitative way (that is, by numbers) it is possible to establish rules by which the resulting movements can be predicted.

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shutvik [7]

the answer is the mantle.

5 0
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