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Suppose that you loft the ball with an initial speed of v = 16.2 m/s, at an angle of ? = 49.4° above the horizontal. At this instant your opponent is d = 10.1 m away from the ball. He begins moving away from you 0.400 s later, hoping to reach the ball and hit it back at the moment that it is h = 2.04 m above its launch point. With what minimum average speed must he move?
A force of 78gm acts at the point (2, 3, 5) the direction cosines of its line of action being as 2:2:1 find the magnitude of its moment about the joining the origin to the point (2, 3, 4).
A 92-kg man's thighbone has a relaxed length of 0.55 m, a cross-sectional area of 6.8 10-4 m2, By how much does the thighbone compress
Carlos weighs 900N on the surface of the earth. How much would he weigh in the satellite circling earth at an altitude of 3200km? (The earth's radius is 6400 km)
Two cars are each traveling at 27.0 m/s, and they are approaching each other. The security alarm in one of the cars accidentally sounds. What frequency fo is heard by the driver of the other car
The transformer on a utility pole steps the voltage down from 10000 V to 220 V for use in a college science building. At what rate is heat lost in the nonideal transformer
One-half mole of a monatomic ideal gas expands adiabatically and does 520 J of work. Specify whether the change is an increase or a decrease
A car traveling east and a minivan traveling south collide in a completely inelastic collision at a perpendicular intersection. What is the direction of the velocity of the vehicles immediately after collision
Objective questions based on force and acceleration.
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.60 10-10 T. How much energy does this wave carry through the window
A point charge of +5.34 ?C is located at the center of a sphere with a radius of 12.6 cm. Determine the electric flux through the surface of the sphere.
A stunt driver is attempting to jump 20 cars of total length of 42m using an inclined ramp. Calculate the Minimum angle of the ramp that would allow the stunt driver to clear 20 cars
A body is displaced (1.5i - 2.0j) m while being acted on by the force (2.0i - 3.0j) N. How much work is done on the body by the force
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