C: J/°C
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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 …
A uniform beam is balanced at its midpoint. An object is placed on the beam, as shown. Which force will rebalance the…
A student finds the centre of mass of a triangular lamina PQR. He drills a small hole at Q. He suspends the lamina fr…
The same downward force is applied to four objects resting on a horizontal surface. Which exerts the greatest pressur…