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The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane. How much work is required to move the block 20 cm down the plane if the frictional coefficient is ? = 0.29?
A horizontal incident beam consisting of white light passes through an equilateral prism. What is the dispersion (thetaV -thetaR) of the outgoing beam
A 45.4 kg girl is standing on a 144 kg plank. The plank, at first at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.60 m/s relative to the plank. Wha..
A certain crystal has a set of planes 0.31 nm apart. A beam of neutrons strikes the crystal at normal incidence, What is the de Broglie wavelength of the neutrons
What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 16.5 V while a current of 7.50 A is charging it
In the Bohr model of the hydrogen atom, an electron in the 6th excited state moves at a speed of 6.08 104 m/s, What is the effective current associated with this orbiting electron
A projectile launcher is set up in lab at a height of 1.05 meters above the lab floor. What is the horizontal distance which the projectile travels before it hits the ground
A typical color television draws about 2.9 A when connected to a 150 V source. What is the efiective resistance of the T.V. set
Tarzan spies a 40kg chimpanzee in severe danger, so he swings to the rescue. He adjusts his strong, but very light, What are the frequency of Tarzan's swing
Three point charges are located on the x-axis. The first charge, q1= 10uC, is at x= -1.00m; the second charge, q2 = 20.0 uC,, Find the force that each charge is subjected
A 200-kg roller coaster car travels over the top of a 40-m high hill (Hill A) traveling at 10 m/s. find the speed of the car at the top of the second hill
A 60 kg person drops from rest a distance of 1.20m to a platform of negligible mass supported by a stiff spring. The platform drops 6cm before the person comes to rest.
Two equally charged particles, held 22.4 cm apart, are released from rest. The initial acceleration of the first particle is observed to be 4.0 m/s2 and that of the second particle is 6.0 m/s2. If the mass of the first particle is 3.40 x 10-7 kg, ..
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