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A stalactite on the roof of a cave drips water at a steadyrate to a pool 4.0m below. As one drop of water hits the poola second drop is in the air, and a third is just detaching from thestalactite.
(a) What is the position and the velocity of the seconddrop when the first drop hits the pool?
(b) How many drops per minute fall into the pool?
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.82 of the person's regular weight, Find the direction of the acceleration
Find the gravitational attraction between two solid lead spheres of 1 kg mass each if the spheres are almost in contact
A child of mass 50.0 kg stands 2.00 m from the center of a horizontal circular disc of radius 4.00 m and mass 200 kg. The disc is mounted on a frictionless, vertical axis. Calculate the angular momentum of the disc
A thin 5.6-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. What is the frequency of the rod's vibration
A bowling ball, which can be treated as a solid sphere with a diameter of 21.6 cm and a weight of 33 kg, The kinetic energy of the bowling ball is
Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. find the maximum magnitude of the electric field
you need to store 25J of energy in the magnetic field of a solenoid. The solenoid hass 100 circular turns of diameter 5.0cm, What is the energy density inside the solenoid
A thermometer containing 0.10 g of mercury is cooled from 14.0° C to 8.1° C. How much energy was lost by the mercury in this process
A state trooper chases a speeder along a straight stretch of road;both vehicles move at 160 km/h. What is the Doppler shift in the frequency heard by the speeder
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15.0 m/s due north relative to the water. Illustrate what is the velocity of the boat relative to shore?
A uniform diving board, of length 5.21 m and mass 50.4 kg, is supported at two points; What is the force acting on the board due to the right support when a diver of mass 62.9 kg stands at the end of the board over the water
A 90 kg crate is pushed at constant speed up the frictionless 24° ramp. What horizontal force F is required? What force is exerted by the ramp on the crate
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