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Katarina [22]
3 years ago
9

Which wedge requires the least amount of force to do a job ?

Physics
2 answers:
yanalaym [24]3 years ago
6 0

The correct answer is:

C. Y

The wedge Y requires the least amount of force to do a job.

|Huntrw6|

Vlad [161]3 years ago
3 0

The answer is Y I'm sorry if i'm wrong guys

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say I have two rocks of different sizes but are taken from the same rock. Will their density be equalvilent
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2 years ago
A 1300-N crate rests on the floor. How much work is required to move it at constant speed (a)
kherson [118]

a) The work done is 920 J

b) The work done is 5200 J

Explanation:

a)

In this first part of the problem, the crate is moved horizontally at constant speed.

The work required in this case is given by

W=Fd cos \theta

where

F is the magnitude of the force applied

d is the displacement of the crate

\theta is the angle between the direction of the force and of the displacement

Here the crate is moved at constant speed: this means that the acceleration of the crate is zero, and so according to Newton's second law, the net force on the crate is zero: this means that the force applied, F, must be equal to the force of friction (but in opposite direction), so

F = 230 N

The displacement is

d = 4.0 m

And the angle is \theta=0^{\circ}, since the force is applied horizontally. Therefore, the work done is

W=(230)(4.0)(cos 0^{\circ})=920 J

b)

In this case, the crate is moved vertically. The force that must be applied to lift the crate must be equal to the weight of the crate (in order to move it a constant speed), therefore

F = W = 1300 N

The displacement this time is again

d = 4.0 m

And the angle is \theta=0^{\circ}, since the force is applied vertically, and the crate is moved also vertically. Therefore, the work done on the crate this time is

W=(1300)(4.0)(cos 0^{\circ})=5200 J

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

4 0
3 years ago
Which kingdom includes only organisms that are heterotophic
Ronch [10]
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frutty [35]

Answer:

The correct answer is A. Vibration.

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3 years ago
Why do all freely falling objects have the same acceleration
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They are falling under the sole influence of gravity all objects<span> will </span>fall<span> with the </span>same<span> rate of </span><span>acceleration needless of there size</span>
8 0
3 years ago
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