IB Physics Multiple Choice 2 All Units

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  • Created by: Milly
  • Created on: 11-04-13 21:20

1. The length of each side of a sugar cube is measured as 10mm with an uncertainty of ± 2mm. Which of the following is the absolute uncertainty in the volume of the sugar cube?

  • ±6 mm^3
  • ±600 mm^3
  • ±8 mm^3
  • ±400 mm^3
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2. A ball of weight W strikes a vertical wall and rebounds horizontally. The change in magnitude of the momentum of the ball is Δp. Which of the following is the magnitude of the impulse that the ball imparts on the wall?

  • W
  • pΔ
  • W-pΔ
  • W+pΔ

3. Two objects are in thermal contact with each other. Which of the following will determine the direction of the transfer of thermal energy between the bodies?

  • The temperature of each body
  • The specific heat capacity of each body
  • The mass of each body
  • The area of contact between the bodies

4. The mole is defined as

  • the amount of a substance that contains as many elementary entities as the number of atoms in 12 g of the isotope carbon-12
  • the amount of a substance that contains as many nuclei as the number of nuclei in 12g of the isotope carbon-12
  • 1/12 the mass of an atom of the isotope carbon-12
  • the mass of one atom of the isotope carbon-12

5. The gas in a cylinder is compressed rapidly by a moving piston. The best explanation for the resulting increase in temperature of the gas is that the molecules of the gas gain kinetic energy

  • from the moving piston
  • by colliding more frequently with the walls of the cylinder
  • by colliding more frequently with each other
  • by being pushed closer together
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