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julia-pushkina [17]
3 years ago
6

When can thermal energy in a system move from lower to higher temperatures?

Physics
1 answer:
Fed [463]3 years ago
4 0

Answer:

When the object in creases or decreases in temperature.

Explanation:

Heat flow moves energy from a higher temperature to a lower temperature. The bigger the difference in temperature between two objects, the faster heat flows between them. When temperatures are the same there is no change in energy due to heat flow. Radiation and Conduction are the two methods of heat transfer..

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A 20kg bike accelerates at 10 m/s2. With what force was the person padeling?
Romashka-Z-Leto [24]
Formula:
F = ma
F: force (N) m: mass (kg) a: acceleration (m/s^2)

Solution:
F = ma
F = 20 × 10
= 200N
6 0
3 years ago
The mass of the skier, including his equipment, is 75kg. In the ski race, the total vertical
diamong [38]

The gravitational potential energy

gpe = mgh

\tt gpe=75\times 9.8\times880=646,800~J

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3 years ago
. Imagine that you are standing at the center of a giant bowl of gelatin. What type of wave will you make across the top of the
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Transverse wave as the wave is going up and down no compressions
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3 years ago
Describe the general relationship between the weight of adult men and the average number of Calories needed daily to maintain a
Alexeev081 [22]

Answer:

The average number of calories needed daily represents the average quantity of calories eliminated by human body due to metabolism and must be compensated by eating and drinking.

The amount of calories contained in the food we eat every day must represent the amount of calories eliminated by the body in that time to have a steady weight.

Explanation:

The average number of calories needed daily represents the average quantity of calories eliminated by human body due to metabolism and must be compensated by eating and drinking. If total quantity of calories in the food we consume every day is higher that the average number of calories needed daily, then weight increases by fat accumulation.

3 0
3 years ago
In a chemical reaction, the total charge of the reactants must be
MA_775_DIABLO [31]

the same with that of products

Explanation:

In a chemical reaction, the total charge of the reactants must be the same with that of products.

Charges must be conserved or balanced in chemical reactions.

  • In both acidic and basic/neutral medium electrons are used to balance the charge.
  • The appropriate number of electrons is added to the side with a larger charge.
  • One electron is used to balance each positive charge.
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Learn more:

Balanced equation brainly.com/question/5297242

#learnwithBrainly

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