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n object is projected from the surface of the earth with a speed of 1.98×104 m/s. What is its speed when it is very far from the earth? (Neglect air resistance.)
Transverse waves travel at 150 m/s on a wire of length 80 cm that is under a tension of 550 N. What is the mass of the wire
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 445 Hz when the train is approaching him and 418 Hz when the train is receding from him. Using these frequencies, h..
A parallel beam of light containing red (660 nm) and blue (470 nm) wavelengths goes from polystyrene to water, What is the angle between the two colors in water
A wave pulse travels down a slinky. The mass of the slinky is m = 0.85 kg and is initially stretched to a length L = 6.2 m. compute the speed of the wave pulse
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
A 700 N car traveling at 25m/s.The breaks are applied suddenly and the car slides to a stop. The average breaking force between the tires and the road is 7100 N.How far will the car slide once the breaks are applied.
A mass on a spring vibrates in simple harmonic motion at a frequency of 0.75 Hz and amplitude of 4.0 cm. what is the speed of the mass when t = 1.0 s
unpolarized light with an intensity Io=16 W/m2 is incident on a pair of polarizers. what is the intensity of light transmitted through the first and second polarizer
You push a 2.7 kg box with a force of 23.8 N along a level floor, but a frictional force of 3.3 N opposes the motion
Two people, one of mass 88kg and the other of mass 62kg , sit in a rowboat of mass 68kg. With the boat initially at rest, In what direction will the boat move
Calculate approximately E at a distance of 40 m (large relative to the plate size) by assuming that the plate is a point charge.
It is 150 cm from your eyes to your toes. You are standing 196 cm in front of a tall mirror. How far is it from your eyes to the image of your toes.
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