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A spaceship, 180 m long as seen on board, moves by the earth at 0.950c. What is its length as measured by an earth-bound observer?
A light ray travels inside a large glass block and approached the glass-air interface at some angle relative to the normal (perpendicular to the surface). After entering the air, the light ray's
you are in a boat that can move in still water at 7.0 ms. you point your boat directly east across a river to get to
A bicyclist travels in a circle of radius 26.0 m at a constant speed of 9.00 m/s. The bicycle-rider mass is 84.0 kg. Calculate the magnitude of the net force on the bicycle from the road
A horizontal block-spring system undergoes simple harmonic motion with amplitude A. Does the total energy change if the mass is doubled but amplitude is not changed? Briefly justify your answer
a thin slab of charge length l width w and surface charge density sigma lies along the x-y plane. supose you want to
A disc is rotating about its center. A mosquito sits on the disc at a distance of 20 cm from the center and has a linear speed tangential to the circular motion of 32 cm/s. What is the speed of rotation of the disc
1. an rlc oscillator circuit contains a 53.0nbspomega resistor and a 1.60-mh inductor. what capacitance is necessary
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position. After he leaves the diving board (with some unidentified angular velocity), he pulls him self into a ball as closely as possible and makes ..
you have a concave spherical mirror with a 11.5-cm radius of curvature. you place an object on the mirrors axis 17.7 cm
Calculate the radius of the orbit for the innermost electron in lanthanum assuming it is relatively unaffected by the atom's other electrons.
Assume it takes 8.00 min to fill a 25.0-gal gasoline tank. (1 U.S. gal = 231 in.3) (a) Calculate the rate at which the tank is filled in gallons per second. (Please provide numerical answer in gal/s)
An iron bar 40 cm long is braised to a copper bar 50 cm long and of the same diameter. determine the temperature of the junction point
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