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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.
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
The distance between deer B and C is 92 m. What is distance between deer A and C.
A 50-kilogram woman balances on one heel of a pair of high heel shoes. If the heel is circular with radius of .5 cm, what pressure does she exert on the floor.
Find out the magnitude of angular acceleration of the wheel
Compute the semi major axis of the star orbit
Two boats start together and race across a 62-km-wide lake and back. Boat A goes across at 62 km/h and returns at 62 km/h. Boat B goes across at 31 km/h, and its crew, realizing how far behind it is getting, returns at 93 km/h.
Find out the precession period of the axis
As the block has raised a vertical height of 0.725, the tension in the cord is 4.66 .What is the velocity of the bullet originally.
What is magnitude of the electric field
Calculate the smallest coefficient of static friction necessary for mass A to remain stationary.
Compute the y-component of acceleration
What is the maximum amount of energy the incident electron can lose in elastically in this collision? What is left over energy of the electron.
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