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A rope is wrapped around a wheel of radius R=2.0 meters. The wheel is mounted with frictionless bearings on an axle through its center. A block of mass 14 kg is suspended from the end of the rope. When the system is released from rest it is observed that the block descends 10 meters in 2.0 seconds. What is the moment of inertia of the wheel? (hint-use energy conservation).
Suppose a car's brakes can produce an acceleration of -7 m/s2. what is the minimum distance necessary to stop the car
Consider the glass prism in the figure below, for which ? = 22° and ? = 68°. What is the smallest angle ?1 for which a laser beam will undergo total internal reflection
A charging RC circuit controls the intermittent windshield wipers in a car. The emf is 12.0 V. What resistance should be used in the charging circuit if the wipers are to operate once every 1.40 s
If an Acura Integra accelerates from 0 to 60 mph in 4 seconds, which one has the larger acceleration
a 250 kg merry-go-round is a solid disc with a radius of 1m when a 40 kg child sits at the center the angular speed is 6 rev/s
A 800 kg rocket sled can be accelerated at a constant rate from rest to 1300 km/h in 2.4 s. What is the magnitude of the required net force
One mole of an ideal gas does 2 600 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm, Determine the initial volume of the gas
A cart of mass M1 = 5.00 kg and initial speed = 4.00 m/s collides head on with a second cart of mass M2 = 3.00 kg at rest. find the speed of M2 after the collision
A rabbit runs in a straight line with a velocity of +1.6 m/s for a period of time, rests for 9 s, and then runs again along the same line at +0.55m/s for an unknown amount of time. The rabbit travels a total distance of 1116m, and its average spee..
A 2.80-kg block starts from rest at the top of a 30.0° incline and slides a distance of 2.10 m down the incline in 1.20 s. Find the magnitude of the acceleration of the block.
If a second point charge of ?3.0 nC is placed at the location where you calculated the electric field in part (a), what will be the magnitude of the force on this second charge due to the field of the first
In a supernova, a red giant of mass 1.19*1031 kg collapses into a neutron star of mass 5.97*1030 kg
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