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PtichkaEL [24]
3 years ago
13

The kinetic energy of an object depends on what?

Physics
2 answers:
liraira [26]3 years ago
4 0
It depends on "Potential Energy", the amount energy it could have, the amount depending on certain circumstances, like height or force. This was how traditional and some modern rollercoasters work. As the "conveyer belt" pulls you up, the higher you go, the more potential energy you have. Once you are falling down the hill, you are experiencing "Kinetic Energy". Hope it makes sence.
Luden [163]3 years ago
3 0
Since K.E =  (1/2)mv²

It depends on the mass of the object and the velocity of the object as well.

KE = f(m, v)
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A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g).
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To solve this problem, let us recall that the formula for gases assuming ideal behaviour is given as:

rms = sqrt (3 R T / M)

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R = gas constant = 8.314 Pa m^3 / mol K

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Now we get the ratios of rms of Argon (1) to hydrogen (2):

rms1 / rms2 = sqrt (3 R T1 / M1) / sqrt (3 R T2 / M2)

or

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rms1 / rms2 = sqrt (T1 M2 / T2 M1)

Since T1 = 4 T2

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rms1 / rms2 = sqrt (4 * 2 / 40)

rms1 / rms2 = 0.447

 

Therefore the ratio of rms is:

<span>rms_Argon / rms_Hydrogen = 0.45</span>

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3 years ago
A closed system’s internal energy changes by 178 J as a result of being heated with 658 J of energy.
statuscvo [17]
Internal energy of the system changes by ΔE = 178 J.
Heat given to the system = Q = +658 J.

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Minus sign indicates that work is done by the system. 
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The complete sentence is:

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In fact, the amount of energy acquired/released by a substance is directly proportional to its change in temperature due to the equation

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