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Ann [662]
2 years ago
11

Between the ball and the player’s head, there are forces. Which of Newton’s laws does this represent? Support your choice.

Physics
2 answers:
Nana76 [90]2 years ago
8 0

Answer:according  to newtons third law for every action force there is an equal in size and opposite in direction reaction force forces always comes in pairs

Explanation:

ira [324]2 years ago
7 0
I need help with this one to
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A. freezing, when water turns to ice the water is turning from a liquid to a solid.
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A bookcase has a base of 1 m long and 0.5 m wide. It has a mass of 300kg. Find the pressure it exerts on the floor in kPa.
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A giraffe is slowly walking across a field. Is it balanced or unbalanced?
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2 years ago
A nonconducting container filled with 25 kg of water at 23°C is fitted with a stirrer, which is made to turn by gravity acting o
Paul [167]

Explanation:

Given that,

Weight of water = 25 kg

Temperature = 23°C

Weight of mass = 32 kg

Distance = 5 m

(a). We need to calculate the amount of work done on the water

Using formula of work done

W=mgh

W=32\times9.8\times5

W=1568\ J

The amount of work done on the water is 1568 J.

(b). We need to calculate the internal-energy change of the water

Using formula of internal energy

The change in internal energy of the water equal to the amount of the  work done on the water.

\Delta U=W

\Delta U=1568\ J

The  change in internal energy is 1568 J.

(c). We need to calculate the final temperature of the water

Using formula of the change internal energy

\Delta U=mc_{p}\Delta T

\Delta U=mc_{p}(T_{2}-T_{1})

T_{2}=T_{1}+\dfrac{\Delta U}{mc_{p}}

T_{2}=23+\dfrac{1568}{25\times4.18\times10^{3}}

T_{2}=23.01^{\circ}\ C

The final temperature of the water is 23.01°C.

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The amount of heat is 1568 J.

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6 0
2 years ago
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