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The nucleus 11-4 Be undergoes B- decay with a half-life of 13.8 sec. The atomic mass of 11-4 Be is 11.021660 u. What is the total kinetic energy of the decay products, the energy released in the decay? The answer is 11.5 Mev.
A wooden raft has a mass of 45 kg. When empty it floats in water (density 1000 kg/m3) with 68% of its volume submerged. What mass of sand could be put on the raft without it sinking.
What is the peak emf of the generator when its coil rotates at a frequency of 50 Hz? Find out the frequency of the coil's rotation when the peak emf of the generator is 163 V.
A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward. Where will the wrench hit the deck
Find out how far from the center of the earth this location is. The mass of the earth is 5.98x10^24 kg. The mass of the moon is 7.35x10^22kg. The mean distance between the moon and the earth is 3.85x10^8 m
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
Runner A is at first 5.4 km west of a flagpole and is running with a constant velocity of 2.6 km/h due east. Runner B is initially 3.0 km east of the flagpole and is running with the constant velocity of 8.8 km/h due west. What would be the distance ..
The frequency of light reaching Earth from a particular galaxy is 16% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
A bucket filled with water has a mass of 48.00 kg and is attached to a rope that is wound around a 0.08 m radius cylinder. What torque does the bucket produce around the center of the cylinder.
A person who weighs 656 N is riding a 91-N mountain bike. compute the area of contact between each tire and the ground
What is magnitude of the angular momentum
An ice cube sliding along the ground at 5 m/s goes off a ramp pointed straight up as shown, What is the speed of the ice cube when it comes down, just before it hits the ground
An undersea research chamber is spherical with an external diameter of 3.70m. What is the buoyant force on the chamber
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