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4 years ago

What is the difference between thermal energy and heat?

2 answers:

7 0

sample responds: Heat is thermal energy that flows from a warmer substance to a cooler substance. Thermal energy is the part of internal energy that can be transferred.

Nostrana [21]4 years ago

6 0

<span>The difference between heat and thermal energy is that thermal energy is not in the process of being transferred; it is not in transit, but remains as part of the internal energy of the system; heat, on the other hand, is energy in transit, i.e. energy in the process of being transferred from a hotter system towards another colder system.</span>

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A person is standing outdoors in the shade where the temperature is 17 °C. (a) What is the radiant energy absorbed per second by

Inessa05 [86]

Answer:

a) 4.9W b) 3.82W

Explanation:

Stefan-Boltzmann law of radiation formulae:

Q/t (W) = sigma* e*A*T^4

Sigma = 5.67*10^-8 j/sm^2K^4 (Stefano Boltzmann constant)

e = emissivity

T = absolute temperature in kelvin and A = area in m^2

a) Q/t = 140/10000(m^2) * 0.87* 5.67* 10^-8* (290^4) = 4.9W

b) without hair the

Q/t = 140/ 10000(m^2) *0.68* 5.67* 10^-8* (290^4)

= 3.82W

7 0

4 years ago

HELP ASAP PLEASE SCIENCE

shutvik [7]

Answer:

I think it's claim 1 because the same mass would cause them both to either fall off or to stay there

3 0

3 years ago

A rope pulls a 20 kg box up. If the tension in the rope is 275 N, what is the acceleration of the box?

Nana76 [90]

Answer:

<h3>The answer is 13.75 m/s²</h3>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

f is the force

m is the mass

From the question we have

$a = \frac{275}{20} = \frac{55}{4} \\$

We have the final answer as

Hope this helps you

4 0

3 years ago

What is the most likely place for a star to begin to form?

Rufina [12.5K]

Answer:

Stars are born within the clouds of dust and scattered throughout most galaxies. Deep within these clouds, turbulence creates knots with enough mass to cause the gas and dust to collapse under its own gravitational force.

4 0

3 years ago

A stereo speaker is rated at P1000 = 52 W of output at 1000 Hz. At 20 Hz, the sound intensity level LaTeX: \betaβ decreases by 1

baherus [9]

Answer:

The value of the power is $P_c = 38.55 \ W$