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An archer pulls her bowstring back 0.400 mby exerting a force that increases uniformly from zero to300 N.
(a) What is the equivalent spring constant of the bow?
N/m
(b) How much work is done in pulling the bow?
J
During basketball tryouts, Umass walk-on hopeful Dwayne Madison stole a pass at his own free throw line. He then spring straight down the court to the opponent's free throw line, What was his avg velocity
question 1. draw a picture of a moving source and the waves surrounding it according to what you observed in this
A particle starts from the origin with velocity 9 m/s at t = 0 and moves in the xy plane with a varying acceleration given by = (9?t) m/s2
A 1.0-kg block is pushed up a rough 22° inclined plane by a force of 7.0 N acting parallel to the incline. Determine the magnitude of the force of friction acting on the block
A 20-kg block, m1, with a pulley attached slides along a frictionless ledge. calculate the tension in the connecting string
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.0 MJ when the flywheel is rotating at 20,000 revolutions per minute
The speed of a bullet as it travels down the barrel of a gun isgiven by V=-5000t2 -300t, where v is in km/s and tin seconds. The acceleration of the bullet as it leaves the barrel is zero.
Compute the voltage drop along a 23 length of household no. 14 copper wire (used in 15- circuits). The wire has diameter 1.628 and carries a 12 current.
an astronaut is performing a space walk outside the international space station. the total mass of the astronaut with
a large group of football fans comes to the game with colored cards that spell out the name of their team when held up
(a) Calculate the index of refraction of the polymer if the refracted angle is 26 degrees. (b) Calculate the critical angle of the polymer in air. (c) Calculate the speed of light in the polymer.
An electric power station is producing 1 x 10+3 W of power that is to be sent to a small town located 11 km away. Eachof the two wires that comprise the transmission line has aresistance per kilometer of length of 4 x 10-2 Ohms /km.
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