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Blababa [14]
3 years ago
13

Four balls have the same temperature. Which ball has the most thermal

Physics
2 answers:
puteri [66]3 years ago
7 0

Answer:

a bowling ball because it has the most mass.

Norma-Jean [14]3 years ago
7 0
B. Bowling ball


It’s B because the bowling ball has a greater weight and greater mass too it.
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Someone is trying to balance a (110cm) plank with certain forces.
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Answer:

a. i. 30 Nm ii. This moment is a clockwise positive moment.

b. i. 15 Nm ii, This moment is a counter-clockwise negative moment.

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i. Will the plank balance?

The plank will balance if the net moment on it is zero

So net moment, M' = positive moment - negative moment = M - M' = 30 Nm   - 15 Nm = 15 Nm

Since the net moment on the plank is M" = 15 Nm ≠ 0,<u>the plank will not balance.</u>

ii Which way will it tip?

The plank would tip in the direction of the greater moment since the net moment is positive. <u>This moment tilts the plank in a clockwise direction, so the plank would tip up.</u>

d) What extra force would be needed at (B) to balance the plank?

The extra force must balance the net moment,

So M" = F"d" where F" = force and d" = distance of force from O = 10 cm = 0.10 m

F" = M"/d"

= 15 Nm/0.10 m

= 150 N

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