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Mario is doing pull-ups about 1 meter from the end of the hour hand of a clock on the Big Ben Tower in London.
Mario weighs 650N and the Hour hand weighs 5000N and is uniform in density. The time is 3pm. The Hour hand is 5 meters long. What is the net Torque around the pin that attaches the hour hand to the clock face?
Two stars are 8 light years from earth. The 550nm light from the 2 stars are barely distinguished in the diffraction pattern of 90 cm wide single slit
Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 7.0 kg, and the other has total mass of 5.0 kg. If the 5.0 kg cart is moving at 3.0 m/s after the spring is allowed..
A salesperson claims a 1340 kg car has an average acceleration of 3 m/s2 from a standing start to 100 km/h. What average net force is required to do this
a rock climber throws a small first aid kit to another climber who is higher up the mountain. the initial velocity of
A geothermal pump is utilized to pump brine whose density is 1050 kg/m^3 at a rate of 0.3m^3/s from a depth of 200m. For a pump efficiency of 74%, decide the needed power input to the pump. Disregard frictional losses in the pipes, and suppose the ge..
A man pushes a lawn mower on a level lawn with a force of 189 N. If 38% of this force is directed downward, how much time is spent in pushing the mower this distance
What is the net upward force on an airplane wing of area 27.8 m2 if the speed of air flow is 242 m/s across the top of the wing
points a and c each have an electric potential of 4 v and point b has an electric potential of 18 v. how much work is
1. sunlight strikes a piece of crown glass at an angle of incidence of 37.4o. calculate the difference in the angle of
Describe, in detail, an experiment in which you could determine the power for a period of several hours. You must be able to tell how to measure the force and the distance to calculate work
A block of mass 3.41 kg is attached to a spring (k=31.9 N/m) by a rope that hangs over a pulley of mass M=6.82 kg and radius R=3.61 cm. find the maximum extension of the spring
a proton accelerates from rest in a uniform electric field of 626 nc. at some later time its speed is 1.32 x 106 ms.a
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