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A glass lens has a convex surface with radius 25.0 cm and a concave surface with a radius of 50.0 cm. The glass has index of refraction of 1.51. Calculate the focal length of this lens. Is the lens converging or diverging?
One cubic meter (1.00 m3) of aluminum has a mass of 2.70 103 kg, and the same volume of iron has a mass of 7.86 103 kg. Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 1.24 cm on an equal-arm balance.
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
Explain how much work is used to raise A to height h? What happens to the kinetic energy of B if its speed is doubled?
A thin square metal plate is 1.00 m on a side is located in the xz-plane. A charge of 400 nC is placed on the plate and can be taken to be distributed uniformly.
The pulley system in Figure below is used to lift a 52-kg crate. Note that a chain connects the upper pulley to the ceiling, determine the tension in each chain
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density
A 50.0 g copper calorimeter contains 260 g of water at 22.0°C. How much steam ought to be condensed into the water if the final temperature of system is to reach 42.0°C.
Two, concentric, thin spherical shells of radii R1 = 28.3 cm and R2 = 35.4 cm are uniformly charged with a total charge Q1 = -63.5 ?C, What is the potential of the outer shell
A bullet of mass m = 25 g is fired into a wooden block of mass M = 4.5 kg. The block is attached to a string of length 1.5 m. The bullet is embedded in the block, causing block to then swing.
A falling sphere viscometer measures the viscosity of a liquid from the terminal velocity of a tiny, falling sphere, what is the shear viscosity of the liquid
You walk 40m to the North then turn 50 degrees to your right and then walk another 30m. How far are you from where you originally started
A proton in Fermilab's Tevatron is accelerated through a potential difference 2.06 MV during each revolution around the ring of radius 1.00 km. how many revolutions must the proton make
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