3 years ago

Temperature is a measure of work. True False

Physics

1 answer:

Veseljchak [2.6K]3 years ago

5 0

The answer is false.

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PLZ ANSWER ASAP, I WILL MARK AS BRAINLIEST

MissTica

Answer:

electric potential energy=

$\frac{KQq}{r}$

so the electric potential energy and distance(r) are inversely proportional.

then, the greatest energy occur in the smallest distance b/n the two balloon.

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4 years ago

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A rocket has initail mass M begins to move from space , with an exhaust constant speed . Find the mass of the rocket while has t

irina1246 [14]

Answer:

$m=\frac{m_{0}}{e}$

Explanation:

Equation of the rocket is,

$m\frac{dv}{dt} =F-v'\frac{dm}{dt}$

Here, v' is the relative velocity of rocket.

In space F is zero.

So,

$m\frac{dv}{dt} =-v'\frac{dm}{dt}\\dv=-v'\frac{dm}{m} \\v=-v'ln\frac{m}{m_{0} }$

Now the momentum can be obtained by multiply by m on both sides.

$P=-v'mln\frac{m}{m_{0} }$

Now for maxima, $\frac{dP}{dm}=0$

$-v'ln\frac{m}{m_{0} }-v'm\frac{m_{0}}{m }m_{0=0$

Now,

$ln(\frac{m}{m_{0} } )=-1\\\frac{m}{m_{0} }=\frac{1}{e} \\m=\frac{m_{0}}{e}$

Therefore, the mass of the rocket while having maximum momentum is $\frac{m_{0}}{e}$

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4 years ago

What is the definition of physical activity?

DiKsa [7]

Physical activity is defined as any bodily movement produced by skeletal muscles that requires energy expenditure.

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3 years ago

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A contact force is a force that is exerted by an object when it touches another object. Which of the following is an example of

valentinak56 [21]

Ummmm....... i think it's b

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3 years ago

Convert 80mg to kg show work

spin [16.1K]

Your answer is 0.00008 kg.

80 mg / 1000000

= 0.00008 kg

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4 years ago