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A puck on a horizontal frictionless table is attached to a string that passes through a hole in a table. Initially the puck rotates with a speed of 4m/s in a circle of radius 18.0 cm about the hole. The string is pulled downward through the hole until the radius of the circular path is 6.0 cm. Explain what happens to the puck's angular momentum.
What percentage of a photon beam would interact in passing through a 3-mm slice of absorber if the linear attenuation coefficient were 0.15/cm
A camera has a lens with a focal length of 22.2 cm. When an object is placed 3.55 meters away is being photographed
A meteorite that has a mass equal to 30.8 tonne (1 tonne = 1000 kg) is exhibited in the American Museum of Natural History in New York City, Find the magnitude of the impulse experienced by the meteorite up to the time its kinetic energy was halved
A converging lens is located 10.0 cm to the left of a diverging lens. The focal length of the converging lens is +20.0 cm. where is the final image formed by the diverging lens
A uniform solid disk with a mass of 23.8 kg and a radius of 0.712 m is free to rotate about a frictionless axle. Forces of 92.0 and 124 N are applied to the disk. Taking the clockwise direction to be the negative direction, what is (a) net torque pro..
1 a service station charges a battery using a current of 6.7 a for 5.0 h. how much charge passes through the battery?2
A 2000-kg horizontal beam is supported at each end. A 160-kg load rests a quarter of the way from one end if the beam and 120 kg cargo is 1/3 from the other end. What is the vertical force on each of the supports.
The two plates of a parallel plate capacitor are 5.8 mm apart and have a potential difference between the of 220 V. Find the magnitude of the electric field between the plates
A solenoid of length 5.4 cm and diameter 0.92 cm is wound with 167 turns per cm, What is the induced emf in the entire solenoid
What is magnitude of the breaking force
a person who weighs 800 N is squatting on a scale. Suddenly he stars jumping, extending his legs as quickly as possible, so that he can ump into the air. as the person is in the process of jumping (accelerating upward) the reading of the scale is ..
As part of an excercise program, a woman walks south at a speed of 2.00 m/s for 60 minutes. She then turns around and walks north a distance of 3000 m in 25.0 minutes
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