D: 800 J
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A bimetallic strip made from brass and iron is used as a thermostat. When the strip is heated, the brass expands more…
According to the kinetic theory, matter is made up of very small particles in a constant state of motion. Which row b…
A balloon filled with air is gently heated. What happens to the mass and the density of the air inside the balloon?
A car moves in a circle at constant speed. What is the direction of the resultant force acting on the car?
A student collects stones and finds their density. Which apparatus is needed to measure the mass and the volume of th…
A uniform beam is balanced at its midpoint. An object is placed on the beam, as shown. Which force will rebalance the…