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An arrow is shot off the top of a bridge of unknown height. The speed of the arrow at launch is known to be 30.0 m/s. The launch is at an angle of 35.0 degrees aboe horizontal. The arrow strikes the ground exactly 120 meters from the base of the bridge. How tall is the bridge? (assume level ground, neglect air resistance).
Calculate the speed of a proton after it accelerates from rest through a potential difference of 170V, Calculate the speed of an electron
Imagine that in a certain proton accelerator, roughly 1011 protons at a time go around a ring having a radius of 4.0 km, What is the current flowing in the ring, in amperes
A supermassive black hole passes through the edge of the solar system 1.20 x 10^13 m away. What is the mass of the black hole
A 1380-kg racecar is driving around a circular track of radius 157 m, What is the magnitude of the net force acting on the vehicle at this time and the force's direction relative to the velocity
A 37-kg girl is bouncing on a trampoline. All through a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 215 J from 430 J. How high does she rise during this interval? Avoid air resistance.
An Olympic skier moving at 20m/s down a 30o slope encounters a region of wet snow and slides 145 m before coming to a stop. What is the coefficient of friction between skis and snow if the combined mass of the skier and skis is 55 Kgm.
A cart of mass 1.91kg traveling 1.29m/s inelastically strikes a stationary mass of 0.41kg. What is the total momentum of the system
How many revolutions will the car have gone through.
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar and has a range of 26 m. Suppose the launch speed is doubled, and the projectile is fired at the same angle above the grou..
A space of 100 cm3 and one of 300 cm3 seperated by a capillary tube, in which a tap is arranged, connected. How big is the pressure in the related areas
Laser beam with wavelength 632.8 nm is aimed perpendicularly at opaque screen with two identical slits on it, positioned horizontally, What are the double slit characteristics
A person carries a long pole of mass 20 kg and length 3.4 m at the angle of 60 degrees. Find the magnitude of the torque on the pole due to gravity.
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