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8_murik_8 [283]
3 years ago
5

Heat always flows from a _________ object to a __________ one.

Physics
2 answers:
PolarNik [594]3 years ago
8 0

From a hot object to a cold object. Ill give an example as to why:

Say you place an ice cube in a glass of warm water, we know that in colder substances, the average kinetic energy per particle (which is the classical definition for temperature is lower). In hotter substances the average kinetic energy per particle is larger, as it is hotter. So now the ice is placed in the warm water. The fast moving particles within the water, that have higher kinetic energies will bounce off the slower moving particles in the ice with lower average kinetic energies. This causes an exchange in energy as the substance with more average kinetic energy per particle (which is temperature) will transfer energy to the slower moving particles located in the ice. This will eventually cause the water and ice to reach an equilibrium temperature as a result of the exchange, with the energy taken to melt the ice included.

satela [25.4K]3 years ago
6 0

Heat always flows from a B. hotter object to a colder one.

Heat transfers always from hotter to colder.

~

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3 0
3 years ago
A wave with 2.0 m amplitude has a frequency of 500 Hz is travelling at a speed of 200 m/s. What is the wavelength?
Serggg [28]

Answer: 0.4m

Explanation:

Given that:

Amplitude of wave = 2.0 m

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3 0
3 years ago
A particle with a charge of 2e moves between two points which have a potential difference of 75V. What is the change in potentia
Sonbull [250]
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Q=2e=2*(-1.6*10^-19) C
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Ep=(-3.2*10^-19)*75

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The change in potential energy of the charge is -2.4*10^-17 J 
5 0
3 years ago
The gravitational force of a star on an orbiting planet 1 is F1. Planet 2, which is twice as massive as planet 1 and orbits at t
Andrej [43]

Answer:

ratio = 1 : 4.5

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F_2=\frac{Gm_1(2m_2)}{(3r)^2}

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8 0
3 years ago
Describe three physical changes that occur in nature?
Alex Ar [27]

Answer: Physical changes in nature could then be erosion in a mountain, the melting of snow, and a river freezing over from the cold. Since none of these changes affect the chemical composition of the mountain, the snow, or the river, they are physical changes.

Explanation:

8 0
3 years ago
Read 2 more answers
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