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Elenna [48]
3 years ago
12

Two iron blocks are the same size. One block has a higher temperature than the other. Which describes the thermal energy of thes

e blocks?
A.Lower temperature means greater potential energy, which means the colder block has greater thermal energy.
B.Lower temperature means greater kinetic energy, which means the colder block has greater thermal energy.
C.Higher temperature means greater potential energy, which means the warmer block has greater thermal energy.
D.Higher temperature means greater kinetic energy, which means the warmer block has greater thermal energy.
Physics
1 answer:
a_sh-v [17]3 years ago
7 0
<span>Higher temperature means greater kinetic energy, which means the warmer block has greater thermal energy.

hoped this helped</span>
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A weather balloon has a volume of 90.0 l when it is released from sea level. What
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The final atmospheric pressure is 5.19\cdot 10^4 Pa

Explanation:

Assuming that the temperature of the air does not change, we can use Boyle's law, which states that for a gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume. In formula,

pV=const.

where

p is the gas pressure

V is the volume

The equation can also be rewritten as

p_1 V_1 = p_2 V_2

where in our problem we have:

p_1= 1.03\cdot 10^5 Pa is the initial pressure (the atmospheric pressure at sea level)

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p_2 is the final pressure

V_2 = 175.0 L is the final volume

Solving the equation for p2, we find the final pressure:

p_2 = \frac{p_1 V_1}{V_2}=\frac{(1.01\cdot 10^5)(90.0)}{175.0}=5.19\cdot 10^4 Pa

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3 0
3 years ago
A tuning fork with a frequency of 335 Hz and a tuning fork of unknown frequency produce beats with a frequency of 5.3 when struc
Ganezh [65]

Answer:

Explanation:

Unknown fork frequency is either

335 + 5.3 = 340.3 Hz

or

335 - 5.3 = 329.7 Hz

After we modify the known fork, the unknown fork frequency equation becomes either

(335 - x) + 8 = 340.3

(335 - x)  = 332.3

x = 2.7 Hz

or

(335 - x) + 8 = 329.7

(335 - x) = 321.7

x = 13.3 Hz

IF the unknown fork frequency was 340.3 Hz,

THEN the 335 Hz fork was detuned to 335 - 2.7 = 332.3 Hz

IF the unknown fork frequency was 329.7 Hz,

THEN the 335 Hz fork was detuned to 335 - 13.3 = 321.7 Hz

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Which item is a pure substance?
hram777 [196]

Answer:

Solid gold. 10 carat indicates gold purity is not 100%. For 24 karat gold is pure gold.

Explanation:

8 0
3 years ago
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