What is the energy required to raise the temperature of 1 g of a substance by 1°c or 1 k?

Physics

1 answer:

lesya692 [45]3 years ago

7 0

Answer:

Specific heat

Explanation:

The specific heat is the amount of heat, that is energy in transfer to or from a thermodynamic system, required to raise the temperature of 1 g of substance by one degree Celsius or one Kelvin, since one degree on the Celsius scale is equal to one Kelvin.

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You are comparing a reaction that produces a chemical change and one that produces a physical change. What evidence could you us

Lynna [10]

Answer: A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.

Explanation: hope this helps have a good day

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4 years ago

Which factor increases as a result of increasing altitude? Air pressure, air density, heights of sea level, space between gas mo

Anuta_ua [19.1K]

Answer:

heights of sea level and the space between gas molecules.

Explanation:

Asking that Which factor increases as a result of increasing altitude?

As the height above the sea increases, air density decreases because the molecule of the air will spread out causing air density to decrease. Also, there will be less air pressing down which will lead to a decrease in air pressure.

Therefore, the heights of sea level, and space between gas molecules are the factor that will increase as a result of increasing altitude. Not Air pressure and air density. But the heights of sea level and the space between gas molecules.

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3 years ago

Two metal balls are the same size, but one weighs twice as much as the other. The balls are dropped from the top of a two story

seropon [69]

The time taken by the metal balls of the same size but different weight, to reach the ground will be the same.

Reason behind:

Two metal balls are the same size, but one weighs twice as much as the other. The balls are dropped from the top of a two-story building at the same instant of time. It is required to find the time taken by the balls to reach the ground.

In free fall, all objects experience the same acceleration owing to gravity when they are close to the earth.

$g=9.8 \text{ m/s}^2$ is the measure of gravitational acceleration.

Because of this, the two metal balls are the same size but have different masses. The air resistance for both balls will be the same due to their similar sizes. Let, g' be the acceleration in the presence of air resistance. The balls are both discharged at once.

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Therefore, the time taken by both balls is:

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