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hjlf
2 years ago
6

2. What can you say about the acceleration of an object

Physics
2 answers:
lawyer [7]2 years ago
7 0

Answer:

directly propotional

as if A.f decrease aceeleration is decreased and this process is called deceleration

Explanation:

hope u like the ans

mafiozo [28]2 years ago
3 0

Answer:

inversely proportional

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3, A 4kg block is pushed 2m at an acceleration of 0.2m/s square up a vertical wall by a constant force F applied at an angle of
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The work done by the applied force on the block against the frictional force is 15.75 J.

<h3>Work done by the applied force</h3>

The work done by the applied force is calculated as follows;

W = Fd

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  • Ff is frictional force

Fcos(37) - μmgsin(37) = ma

Fcos(37) - (0.3)(4)(9.8)sin(37) = 4(0.2)

0.799F - 7.077 = 0.8

F = 9.86 N

W = Fdcosθ

W = 9.86 x 2 x cos(37)

W = 15.75 J

Thus, the work done by the applied force on the block against the frictional force is 15.75 J.

Learn more about work done here: brainly.com/question/25573309

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5 0
1 year ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elect
beks73 [17]

Answer:

Speed of the alpha particle is v=1.8180\times 10^3m/sec      

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Potential difference V=-3.45\times 10^{-3}volt

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From energy conservation we know that

\frac{1}{2}mv^2=qV

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v=1.8180\times 10^3m/sec

4 0
3 years ago
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