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A person enter a tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 17.0 second.
(a) Find how tall is the tower?
(b) If this pendulum is taken to the Moon, where the free-fall acceleration is 1.67 m/s2, determine what is the period there? s
during a cold winter day wind at 55 kmh assuming heat transfer coefficient h 32.8 wm2c is blowing parallel to a
Consider an electron in the n = 7 state hydrogen. What is the magnetic field produced by this current loop at the nucleus
A camera is supplied with two interchangeable lenses, whose focallengths are 35.0 and 150.0 mm. A woman whose height is 1.80 mstands 7.00 m in front of the camera.
A cart of mass 1.8kg rolls without friction on a track. At point A the cart is moving at 6.0m/s. What work was done by friction
The two upper front teeth of a person exert a total force of 30N on a piece of steak. If the biting edge of each tooth measures 10 mm x 1 mm, find out the pressure on the steak.
What is the magnitude of the electric field strength E such that an electron, when placed in the field, would experience an electrical force equal to its weight? What electric field strength E is required if the electron is replaced by a proton?
A sonar generator on a submarine on the ocean surface produces periodic ultrasonic waves at a frequency of 2.50 MHz. How deep is the ocean floor
A light beam is incident on heavy flint glass (n=1.65) at the polarizing angle. Angle of refraction is 31.22 degrees. determine the change in the intensity
a stone is dropped from rest from the roof of a 100-m high building 2.00 s after that a second stone is thrown straight
A beam of light in air strikes a slab of glass (n= 1.50) and is partially reflected and partially refracted. Find the angle of incidence
When a car is traveling at 25 m/s on level ground, the stopping distance is found to be 22m. What is the stopping distance now, as measured along the incline
A car starts a race from rest on a circular track and has a tangential speed of 43 m/s at the end of the third lap. The track has a radius of 91 m. what is the magnitude of its tangential acceleration
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