B: evaporation
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A balloon filled with air is gently heated. What happens to the mass and the density of the air inside the balloon?
A certain liquid is used in a liquid-in-glass thermometer. It does not expand uniformly with temperature. What effect…
An ice pack is used to cool 0.25 kg of water. The specific heat capacity of water is 4.2 kJ/(kg°C). How much thermal …
Forces of 3 N and 4 N act as shown in the diagram. Which diagram shows the resultant R of these two forces?
A micrometer is used to measure the diameter of a uniform wire. What is done to obtain an accurate answer?
The speed-time graph for a falling skydiver is shown below. As he falls, the skydiver spreads out his arms and legs a…