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A box of unknown mass begins at the base of a 30 degree ramp with an initial velocity of 10.0 m/s. It coasts up the ramp to some maximum height, and then falls back down to its original position. If the coefficient of kinetic friction between the box and the ramp is 0.3, calculate the maximum distance up the ramp which the box will reach?
A 420g oscillator has a speed of 128.5cm/s when its displacement is 3.30cm and 59.5cm/s when its displacement is 5.40cm .what is the oscillator's maximum speed
a ball rolls down a 100m.the hill is inclined at 60 degrees. if the ball has a rotational inertia of 10kg-m^2 and starts from rest, what is the final rotational speed of the ball?(you must use the conservation of energy)
it takes 100 minutes for a middle-aged physics professor to ride his bicycle up the road to Alpe d'Huez in France, What is the bicyclists average power output
A car driving at 33 m/s is approaching a stoplight. As the stoplight turns red, the driver decides that the car is going too fast to stop at the white line and hits the brakes hard. How fast was the car going when the driver changed the rate of dec..
A thin metal foil separates one end of two pieces of optically flat glass (n = 1.5), the gap between the plates is filled with water (n = 1.33), What is the thickness of the foil
Find the size of the net force produced by a 7 N and an 12 N force in each of the following arrangements. (a) The forces act in the same direction. N= (b) The forces act in opposite directions. N= (c) The forces act at right angles to each other. ..
When a 21.0-V emf device is placed across two resistors in series, a current of 12.0 A is flowing in each of the resistors. determine the magnitude of the larger of the two resistance
An induction cooktop generates an alternating magnetic field B(t)=(0.25 T)cos??t. Calculate the maximum emf induced in a pan modeled as a ring of radius 10 cm
A rectangular block of ice 9.00 m on each side and 0.7 m thick floats in sea water. The density of the sea water is 1025kg/m3. The density of ice is 919kg/m3. How high does the top of the ice block float above the water level.
at the local county fair, you watch as a blacksmith drops a 0.50kg iron horseshoe into a bucket containing 25kg of water. what is the equilibrium temp of the system
A cockroach of mass m lies on the rim of a uniform disk of mass 8m that can rotate freely about its center like a merry-go-round. at first the cockroach and disk rotate together with an angular velocity of 0.200 rad/s. Then the cockroach walks half..
A projectile is fired vertically from Earth's surface with an initial speed of 9.6 km/s. Neglecting air drag, how far above the surface of Earth will it go
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