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A simple pendulum of length 1.0 metre with a bob of mass m swings with an angular amplitude of 60? What would be the tension in the string when its angular displacement is 45?
A river 98.2 m wide flows toward the south at 35.8 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. How far downstream does she travel
A annular disk (a disk with a hole in it) has an inside radius a and an outside radius b and a uniform surface charge density sigma. What is the potential at a point a perpendicular distance z-naught from the center?
An airplane flies due south at 155km/h relative to the air. There is a wind blowing at 89 km/h to the east proportionate to the ground. What are the plane's speed and direction relative to the ground.
A pendulum consists of a 3.8 kg stone swinging on a 3.6 m string ofnegligible mass. The stone has a speed of 9.4 m/s when it passesits lowest point. (a) What is the speed when the string is at 64° to the vertical? (
In the Millikan oil-drop experiment illustrated in the figure below, an atomizer is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates, Estimate the radius of an oil drop of density 854 kg/m3 for which it..
A 98.0 kg hockey player skating at 2.12 m/s 32° S of W is body checked by an 87.0 kg opponent who is skating at 1.40 m/s 42° N of E. What is the velocity of the pair immediately after the collision
A series RC circuit with C = 56?F and R = 6.4? has a 25V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed, What is the voltage across the resistor immediately afterward
an electron and a proton are each accelerated through a potential difference of 21 million volts. find the momentum in
During a rainstorm, 0.1 m of rain falls. If your roof has an area of 100 m2, What is the volume of water that fell on your roof
Yellow light has a wavelength of 600nm. A single slit has a width of 2.4x10-6m and the screen is L=0.35m away from the slit. Discover the width of the central bright fringe.
A ball is thrown at an angle of 24.7 degree above the horizontal at a speed of 5.65 m/s. What is the horizontal component of the ball's velocity
The lens of a slide projector with a focal length of a 120 mm projects a slide onto a screen that is 13 m away. How far from the lens must the slide be placed to form a sharp image on the screen? (in cm)
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