The diagram shows a heating curve for water. which statement best describes what is happening at segment w-x? water is absorbing heat. water is releasing heat. a liquid is changing to a gas. a gas is changing to a liquid.

Water is absorbing heat.

On a heating curve, a phase change is indicated by a straight line.  Since W-X is sloped, the answer cannot be "a liquid is changing to a gas" or "a gas is changing to a liquid".  We know water is absorbing head on W-X because the line goes up, and the y-axis is rising temperatures.

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the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

the answer to this is proletariats.

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