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A cyclist turns her bicycle upside down to repair it. She then notices that the front wheel is executing a slow, small-amplitude, back-and-forth rotational motion with period 12 s. Treating the wheel as a thin ring of mass 600 g and radius 30 cm, whose only irregularity is the tire valve stem, determine the mass of the valve stem.
A 1 530-kg automobile has a wheel base (the distance between the axles) of 2.70 m. Find the force exerted by the ground on each wheel
A power station with an efficiency of 0.5 generates 10^8W of electric power and dissipates 1.00 x10^8 W of thermal energy to the cooling water that flows through it.
Water has the following thermodynamic constants: (1) specific heat liquid = 4.18 J/g °C, solid = 2.09 J/g °C, gas = 1.89 J/g °C, (2) heat of fusion = 334 J/g, and (3) heat of vaporization = 2257 J/g. how much heat is required to melt the sample
What is the magnitude of the centripetal acceleration.
A pendulum bob with a mass of 0.38 kg is attached to a 1.5 m long string as shown. determine the change in its gravitational potential energy
You want to precut a set of 1.44? strips of 14.0 gauge copper wire (of diameter 1.628 mm). How long should each strip be
A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.4 m/s2. If the tension in the cord is 86 N, what is the lamp's mass
An iron tower in is 317 meters tall on a cold day (T = -9.9 degrees Celsius). What is its height of the tower on a hot day
A golden retriever is sitting in a park when it sees a squirrel. What is the magnitude of the dog's change in momentum
A proton that has a mass m and is moving at 280 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m
To maintain constant velocity, the bicyclist is able to return to the lower applied force from Part A but must remain in the larger gear from Part B ( = 4.64 ). What is , the coefficient of rolling resistance on this road surface
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 12 state? What is the energy of the Hydrogen atom when the electron is in the n = 3 state?
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