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A solid disk rotates in the horizontal plane at an angular velocity of 0.042 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.080 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance 0.30 m from the axis. The sand in the ring has a mass of 0.63 kg. After all the sand is in place, what is the angular velocity of the disk?
A container of cross-sectional area 102 cm2 contains liquid of density 1.95 g/cm3 to a height of 6.60 cm above a small hole of area 1.00 cm2 in the side. Find the flow rate through the hole
An automobile club plans to race a 700kg car at the local racetrack. The car needs to be able to travel around several 155m radius curves at 87km/h.
a clump of soft clay is thrown horizontally from 8.50 m above ground with a speed of of 20.00 ms. where is the clay
A 72 kg man stands on a spring scale in an elevator. Starting from rest, elevator ascends, attaining its maximum speed of 1.20 m/s in 0.80 s.
Suppose a space colony is established on the moon. how much time will the clock on the moon lag the clock
A passenger on a boat moving at 1.20 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s. What is the velocity of the passenger relative to the water
a gymnast of mass 64.0rm kg hangs from a vertical rope attached to the ceiling. you can ignore the weight of the rope
questiona 664-turn circular-loop coil 11.2 cm in diameter is initially aligned so that its axis isnbspparallel to
a proton moves through a magnetic field at 29.9 of the speed of light. at a location where the field has a magnitude of
The proper length of one spaceship is three times that of another. The two spaceships are traveling in the same direction and, while both are passing overhead, determine the speed of the faster spaceship
A planet of mass m = 7.05 × 1024 kg is orbiting in a circular path a star of mass M = 4.95 × 1029 kg. The radius of the orbit is R = 8.35 × 107 km
A laser-beam is fired through the air into a solid block of diamond (don't ask where we got it, it's a secret). What is the angle of refraction within the diamond
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