### Establish the initial volume of the gas

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Q1. Stationary bicycle is raised off the ground, and its front wheel (m = 1.3 kg) is rotating at an angular velocity of 12.0 rad/s (see the drawing). The front brake is then applied for 3.0 s, and the wheel slows down to 3.8 rad/s. supposes that all the mass of the wheel is concentrated in the rim, the radius of that is 0.31 m. The coefficient of kinetic friction between each brake pad and the rim is μk = 0.85. What is the magnitude of normal force that each brake pad applies to the rim?

Q2. One mole of an ideal gas does 3 500 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 22.0 L.

(a) establish the initial volume of the gas.

(b) Find out the temperature of the gas.

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