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4 years ago

Which ball has the greater acceleration at the instant of release

1 answer:

3 0

I can't see either of them, so I must assume that they're both
far away from me, at different places in the solar system.

So I can say with some assurance that whichever ball is on the
more massive planet will have greater acceleration when it's dropped.
Its acceleration will be constant, from the instant of release until the
instant it hits the "ground" or whatever they call it on that planet.

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Under what conditions does q, the heat evolved or absorbed by the system in a physical or chemical process, equal the change in

Paladinen [302]

Answer: When $w=-P\Delta V$

Explanation:

According to first law of thermodynamics, energy can neither be created nor be destroyed. It can only be transformed from one form to another.

$\Delta H=\Delta E+P\Delta V$

$\Delta E=q+w$

$\Delta H$ = change in enthalpy

P = pressure

$\Delta V$ = change in volume

$\Delta E$ =Change in internal energy

q = heat absorbed or released

w = work done on or by the system

$\Delta H=q+w+P\Delta V$

Thus for $\Delta E=q+w$ , $w=-P\Delta V$

The heat evolved or absorbed by the system in a physical or chemical process, equal the change in enthalpy of the system when $w=-P\Delta V$

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4 years ago

A golfer tees off and hits a golf ball at a speed of 31 m/s and at an angle of 35 degrees. What is the vertical velocity compone

Mariulka [41]

Depends on how strong you are. People can hit it anywhere between a few inches and 500 yards.

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3 years ago

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frozen [14]

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