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A hollow spherical shell has mass 7.85kgand radius 0.220m. It is initially at rest and then rotates about a stationary axis that lies along a diameter with a constant acceleration of 0.880rad/s2. What is the kinetic energy of the shell after it has turned through 7.00 rev ?
a sheet of glass has nred 1.52 and nviolet 1.55. a narrow beam of white light is incident on the glass at 30 degrees.
The actual fundamental frequency of the contrabassoon is 27.5 Hz , which should be different from your answer in part A. This means the model of the instrument as an open-closed tube is a bit too simple. But if you insist on using that model, what..
David is driving a steady 25 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.8 m/s^2 at the instant when David passes.
A helicopter drops an inflatable raft to flood victims floating ina lake. How far from the victims does the raft land
1 a loudspeaker at a concert genertes 2.00x10-2 wm2 at a distance of 25.0m and all of its acoustic energy is radiated
A 0.300 kg hammer is moving horizontally at 8.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. What was the average force exerted on the nail
What is the little distance between the speakers for which the interference of the sound waves is destructive.
Two 11-cm-diameter electrodes 0.54cm apart form a parallel-plate capacitor. What are the charge on each electrode, the electric field strength inside the capacitor
The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.17 mA, How much energy does the battery deliver to the calculator circuit
Each plate of a parallel-plate capacitor is a square of side 3.63 cm and the plates are separated by 0.443 mm. Find the electric field strength inside the capacitor
A light aircraft flies 120 km (E) in 0,80 h, then 40 km [W] in 0.20 h. Calculate the average speed for the total flight, and calculate the average velocity for the total flight
A hot-air balloon is ascending at the rate of 14 m/s and is 98 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
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