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A grasshopper hops along a level road. On each hop, the grasshopper launches itself at angle θ0=45° and achieves a range R = 0.82m .What is the average horizontal speed of the grasshopper as it hops along the road? Assume that the time spent on the ground between hops is negligible.
Two converging lenses are placed such that they are three focal lengths apart. What is the linear magnification of the lens system
a 0.100 kg rock is attached to a 2.00 m long string and swung in a horizontal circle at a speed of 30.0 ms. find the
A force of 4.7 N acts on a 14 kg body initially at rest. Compute the work done by the force in thefirst second. Compute the work done by the force in the second second. Compute the work done by the force in the third second.
every few hundred years most planets line up on the same side of the sun. calcute the total force on the Earth due to Venus, Jupiter, and Saturn, what fraction of the sun's force on the Earth is this
What is the unknown charge at x = +0.19 m in micro-coulombs? If negative, indicate so with a negative sign, but omit a sign if positive.
A very light rod with a length of 1.95m extends straight out fromone end of a meter stick. The other end of the rod serves as apivot and the system is set into oscillation. determine the period of oscillation
Find the focal length of contact lenses that would allow a nearsighted person with a 145 cm far point to focus on the stars at night
q1. a worker stands still on a roof sloped at an angle of 40deg above the horizontal. he is prevented from slipping by
A thin uniform rod (mass = 0.95 kg) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. What is the maximum kinetic energy of the rod as it swings
A 1500 kg car moving east at 26 m/s collides with a 1720 kg car moving south at 15 m/s and the two cars stick together.
A pilot claims to have seen a UFO moving initially at a speed of about 373 m/s in an easterly direction and then, Compute the UFO's average acceleration during the turn
The position function x(t) of a particle moving along an x axis is x = 4.5 - 4.5t2, with x in meters and t in seconds.
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