Suppose that 62% of the moments point up in thermal equilibrium. Calculate the ratio of the number of moments pointing up to the number of moments pointing down.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c. the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors