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docker41 [41]
3 years ago
12

A 1-lb block and a 100-lb block are placed side by side at the top of a frictionless hill. Each is given a very light tap to beg

in their race to the bottom of the hill. In the absence of air resistance, what can you conclude about the outcome of the race?a) The 1-lb block wins the race.
b) The 100-lb block wins the race.
c) The two blocks end in a tie.
d) There’s not enough information to determine which block wins the race
Physics
1 answer:
qwelly [4]3 years ago
4 0

Answer:

(c). The two blocks end in a tie

Explanation:

the reason being the absence of any resistance offered to both of the blocks.

if the slope of the hill is for instance 60 deg.

then the acceleration in absence of any resistance is a= 9.81sin(60)

since the acceleration is same then both of the blocks will reach at the same instant

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puteri [66]

Answer:

magnitude of gravitational force between the Earth and the Sun at B is greater than that at A

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A pitcher throws a 0.145-kg baseball at a velocity of 30.0m/s. How
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3 years ago
Given the following specific heat capacities, which material was have the largest change in temperature if 10 grams of each subs
Ilya [14]

Answer:

Explanation:

Comment

You could calculate it out by assuming the same starting temperature for each substance. (You have to assume that the substances do start at the same temperature anyway).

That's like shooting 12 with 2 dice. It can be done, but aiming for a more common number is a better idea.

Same with this question.

You should just develop a rule.  The rule will look like this

The greater the heat capacity the (higher or lower) the change in temperature.

The greater the heat capacity the lower the change in temperature

That's not your question. You want to know which substance will have the greatest temperature change given their heat capacities.

Answer

lead. It has the smallest heat capacity and therefore it's temperature change will be the greatest.

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