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blsea [12.9K]
3 years ago
9

What does temperature measure? (1 point)

Physics
1 answer:
Agata [3.3K]3 years ago
5 0
The total energy of the particles !
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An object with a mass of 3 kg has a momentum of 75 kg.m/s. What is its velocity?
tiny-mole [99]

Answer:

25m/s

Explanation:

p=mv

75 = 3v

v = 75/3

v = 25 m/s

If you want to verify your answer, just insert the value of v to the equation.

8 0
3 years ago
3.
Alexxx [7]

Answer:

120°

Explanation:

Draw a free body diagram.  There are three forces acting on the traffic light.  Two tension forces acting along the cables, and weight.

The tension forces have an angle θ between them.  That means each tension force forms an angle of θ/2 with respect to the vertical.  So the y component of each tension force is:

Ty = T cos (θ/2)

Sum of the forces in the y direction:

∑F = ma

Ty + Ty − W = 0

2 Ty = W

Substituting:

2 T cos (θ/2) = W

If W = T, then:

2 W cos (θ/2) = W

2 cos (θ/2) = 1

cos (θ/2) = 1/2

θ/2 = 60°

θ = 120°

6 0
4 years ago
If f3=0 and f1=12n, what does the magnitude of f⃗ 2 have to be for there to be rotational equilibrium?
QveST [7]

<span>I found out F2 and its correct just need help in solving the other parts </span>
<span>F2 = 4.5 N </span>
4 0
4 years ago
A truck is parked at the bottom of a hill. It moves from the bottom of a hill
Marat540 [252]

Answer:

C

Explanation:

potential energy is stored energy that an object has due to its position or chemical composition. Since the truck has the possibility to move down the hill when it is at the top of the hill, it has a great amount of potential energy, howver when its at the bottom of the hill, it doesn’t have the possibility to move or can move v little due to its positions,  therefore it has little to no potienatal energy.

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3 years ago
How high off the ground is a a book that has 120 J of potential energy and a 4-kg mass ​
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