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Sav [38]
3 years ago
11

. 1. When work is done and a force is transferred which choice describes the movement of the object? (Points : 3). . a) When wor

k is done and a force is transferred an object must move in the direction of the force.. b) When work is done and a force is transferred an object moves opposite the direction of the force.. c) When work is done and a force is transferred an object does not move.. d) When work is done and a force is transferred an object moves perpendicular to the direction of the force.
Physics
2 answers:
MissTica3 years ago
6 0
I think that when work is done and a force istransferred an object must move in the direction of the force.
love history [14]3 years ago
5 0

Answer:

a) When work is done and a force is transferred an object must move in the direction of the force.

Explanation:

As we know that work done is given by the equation

W = F . d

now when work is done and force is transferred

then in that case the work done must be positive

so here we can say that angle between force and displacement must be acute angle

so here the displacement of object must be in the direction of the applied force so that the work done is positive.

So here correct answer would be

a) When work is done and a force is transferred an object must move in the direction of the force.

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a boulder can change due to erosion and weathering. it can change shape and sometimes color, possibly.

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3 years ago
PLZZZZZ ANSWER Which example describes a nonrenewable resource?
Zepler [3.9K]

Answer:

I believe that the answer is D. There are drilling platforms all along the coast that are used to drill for natural gas that can be used to generate electricity.

Explanation:

Solar panels use the sun, and that is renewable.

The power plant uses tides and waves, they are renewable.

Windmills use wind, that is renewable.

So, the answer is D.

7 0
3 years ago
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An object dropped from Cliff falls with a constant acceleration of 10 metre per second square find its Speed of two seconds afte
julsineya [31]

Answer:

20 meters per second

Explanation:

If an object accelerates for 2 seconds, and accelerates by 10 meters per second, then that objects speed will be 20 meters per second, assuming hat there are no other factors involved.

3 0
3 years ago
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A car accelerates from rest for 8.0 s, and reaches a speed of 66 m/s. How far will the
PSYCHO15rus [73]

Answer: C

Explanation:

Find the acceleration using this kinematic equation:

v_f=v_i+at\\66=0+a*8\\a=8.25m/s^2

Now use this kinematic equation to find the displacement:

v_f^2=v_i^2+2a*d\\66^2=0^2+2(8.25)d\\4356=16.5d\\d=264m

3 0
3 years ago
A pizza delivery driver must make three stops on her route. She will first leave the restaurant and travel 4 km due north to the
topjm [15]
<h2>5.3 km</h2>

Explanation:

       This question involves continuous displacement in various directions. When it becomes difficult to imagine, vector analysis becomes handy.

       Let us denote each of the individual displacements by a vector. Consider the unit vectors \vec{i}\textrm{ and }\vec{j} as the unit vectors in the direction of East and North respectively.

       By simple calculations, we can derive the unit vectors \vec{j},\frac{-\vec{i}-\vec{j}}{2}\textrm{ and }\frac{-\frac{1}{2}\vec{i}+\frac{\sqrt{3}}{2}\vec{j}}{2} in the directions North, 45^{o} South of West and 60^{o} North of West respectively.

       So Total displacement vector = Sum of individual displacement vectors.

       Displacement vector = 4(\vec{j})+6(\frac{-\vec{i}-\vec{j}}{2})+5(\frac{-\frac{1}{2}\vec{i}+\frac{\sqrt{3}}{2}\vec{j}}{2})=-4.25\vec{i}+3.165\vec{j}

       Magnitude of Displacement = |-4.25\vec{i}+3.165\vec{j}|=5.3km

∴ Total displacement = 5.3km

4 0
3 years ago
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