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tensa zangetsu [6.8K]
2 years ago
11

A high school physics teacher also happens to be the junior hockey team coach. During a break at practice, the coach asks two pl

ayers to go to the center of the ice with a 10.0-m pole. A 40-kg player is at one end of the pole and a 60-kg player is at the other end. The players then start pulling themselves together by pulling the rod and sliding on the ice as they move along the rod. When the two players meet, what distance will the 60-kg player have moved
Physics
1 answer:
yawa3891 [41]2 years ago
4 0

Answer:

Explanation:

Since no external force acts on the system , centre of mass of two players will remain the same throughout the movement .

Distance of centre of mass is inversely proportional to mass . So centre of mass of the system will be nearer to 60 kg player

Distance of cetre of mass from 60 kg player

= 10 x 40 / (60+40 )

= 4 m

They will meet at centre of mass .

So, 60 kg player will be moving by a distance of 4 m , 40 kg player will be moving by 6 m before they meet .

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24

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If a bow holds 500J of potential energy as the arrow is pulled back, how much kinetic energy will the arrow have after it has be
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Answer:

500J

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The arrow will have an energy of 500J after it has been released from its state of rest.

This is compliance with the law of conservation of energy which states that "in every system, energy is neither created nor destroyed but transformed from one form to another".

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2 years ago
A circuit with a 60 V battery, a 7 Ω resistor, a resistor with 0.2 A across it, and another 7 Ω resistor in series. What is the
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Answer:

28.6 ohm

Explanation:

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2 years ago
Studying climate on other planets is important to understanding climate on earth because
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yes it is important.

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6 0
3 years ago
In a cyclic process, a gas performs 123 J of work on its surroundings per cycle. What amount of heat, if any, transfers into or
Aleks04 [339]

Answer:

123 J transfer into the gas

Explanation:

Here we know that 123 J work is done by the gas on its surrounding

So here gas is doing work against external forces

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123 J transfer into the gas

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