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Yakvenalex [24]
3 years ago
9

Joe follows the procedure below to make a compass.

Physics
2 answers:
Anna [14]3 years ago
8 0
The answer would be C.

koban [17]3 years ago
7 0

Answer:

C: to magnetize the needle

Explanation:

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What creates the changes in step 1,2,3 of the nitrogen cycle
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if you dig a hole through the earth, from one hemisphere to the other, and drop a tennis ball into it, would it get stuck at the
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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).
qaws [65]

To solve this problem, let us recall that the formula for gases assuming ideal behaviour is given as:

rms = sqrt (3 R T / M)

where

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

T = temperature

M = molar mass

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

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

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

Since T1 = 4 T2

rms1 / rms2 = sqrt (4 T2 M2 / T2 M1)

rms1 / rms2 = sqrt (4 M2 / M1)

and M2 = 2 while M1 = 40

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
Hot coffee in a mug cools over time and the mug warms up. Which describes the energy in this system?
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Thermal energy from the coffee is transferred to the mug.
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