ll of mass m is thrown vertically upward with an initial speed of v0. It experiences a force of air resistance given by F = -kv,

Answer:

Its because hot transfers to cool and your body will always be colder than the fire so the hot air particles from the fire even out with the cool particles of your body

Explanation:

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Answer:

The rate of evaporation of the water is 2.872kg per hour.

Explanation:

We need to find the rate of evaporation of water.

This rate commonly express as \dot{m} and the equation is

Where Q is the net rate heat transfer and is the enthalpy -in this case for vaporization.

We know that 60% of heat is transferred to water. Then only a fraction of that heat is really the 'true' rate of heat transfer,

But we need this values not in seconds but in hours, so

Hence the rate of evaporation of the water is 2.872kg per hour.

Answer:

Matter is made up of particles that are constantly moving. All particles have energy, but the energy varies depending on the temperature the sample of matter is in. This in turn determines whether the substance exists in the solid, liquid, or gaseous state.

Explanation: