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A centrifuge spins small tubes in a circle of radius 21 cm at a rate of 1419 rev/min. What is the centripetal force on a sample that has a mass of 5 g?
The second-order fringe of 680 nm light is observed at an angle of 16° when the light falls on two narrow slits. How far apart are the slits
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.46 m radius and is 2 m high. How much energy is lost through the walls of the hot water heater
An eagle (mA = 4.3 kg) moving with speed vA = 7.8 m/s is on a collision course with a second eagle (mB = 5.6 kg) moving at vB = 10.2 m/s in a direction perpendicular to the first
104.05 J of energy are transferred to a system in the form of heat while the internal energy decreases by 57.65 J. How much work is done by the system
A small object with a mass of one gram carries a charge of 1µC and is suspended by a thread between the vertical plates of a parallel-plate capacitor submitted to a voltage of 1 kilo volts
A 10-m-long glider with a mass of 680kg (including the passengers) is gliding horizontally through the air at 26m/s, What is the glider's speed just after the skydiver lets go
A pilot of mass 70kg pulls out of a dive following a circular path of radius 850m and at a speed of 200m/s. what is the force that the pilot feels
Radiotelescopes are designed to observe 21-cmwaves emitted by atomic hydrogen gas. Estimate the distance to this galaxy
The electric field midway between two equal but opposite point charges is 745 N/C, What is the magnitude of the charge on each
A thin uniform rod (mass = 1.75 kg) swings about an axis that passes through one end of the rod, What is the maximum kinetic energy of the rod
One displacement vector A has magnitude of 2.78 km and point due north. Another displacement vector B has a magnitude of 7.40 km and also points due north. Provide diagrams and calculate the magnitude and direction of A+B, B-A, A-B.
A small 12.5g plastic ball is tied to a very light 27.8cm string that is attached to the vertical wall of a room. Find the magnitude of the electric field in the room
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