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A bridge of length 50.0 m and mass 8.10x 104 kg is supported on a smooth pier ateach end. A truck of mass 3.20 x104 kg is located 15.0 m from one end. What are the forces on the bridge at the points of support?
An electron moves in the positive x-direction a distance of 2.38 m in 2.95 x10-8 s, bounces off a moving proton, and then moves in the opposite direction a distance of 1.63m in 3.53x 10-8 s.
a a physicist on a planet orbiting the star zog measures the intensity of the radiation reaching her to be 1370 wm2. if
q1.an underwater diver sees the sun 50 degrees above horizontal. how high is the sun above the horizon to a fisherman
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, How deep is the hole
A skier is gliding along at 5.0 m/s. On horizontal, frictionless snow. He suddenly starts down a 11 degree incline. His speed at the bottom is 15m/s.
A rotating cylinder about 25 km long and 9 km in diameter is designed to be used as a space colony. with what angular speed must it rotate so that residents on it would experience the same acceleration due to gravity as on earth? In radians per se..
a 20 volt battery is connected to a 2x106 farad capacitor. how many electrons are there on the negative plate of the
a listener at rest with respect to the air and the ground hears a signal of frequency f r from a source moving toward
An ALkaline earth atom has 2 valance electrons. Both can be spin up and spin down. Write the singlet states
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a highest of 90.0 cm, what was the speed of the bullet at impact with the block.
A dipole has a +5e charged particle and a -5e charged particle separated by a distance of 6 nm. What is the magnitude of its dipole moment
The angular velocity of a rotor in a centrifuge increase constantly from 420 rad/s to 1420 rad/s in 5.00 s. a) Determine the angular displacement through which the rotor turns. b) What is the angular acceleration?
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