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A quarterback claims that he can throw the football a horizontal distance of 183m (200 yd). He claims that he can do this by launching the ball at the relatively low angle of 30 degrees above the horizontal. To evaluate this claim, determine the speed with which this quarterback must throw the ball. Assume that the ball is launched and caught at the same vertical level and that air resistance can be ignored. For comparison, a baseball pitcher who can accurately throw a fastball at 45 m/s (100 mph) would be considered exceptional.
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. What is the electric field near the surface of the ball
What would be the nature and height of the image?
A uniform plate of height 1.920 m is cut in the form of a parabolic section. The lower boundary of the plate is defined by: y = 1.000 x2. The plate has a mass of 1.17 kg.
A raft is 4.4cm wide and 6.2m long. When a horse is loaded onto the raft, it sinks 2.7cm deeper into the water. What is the weight of the horse
A conducting bar of length script l moves to the right on two frictionless rails, Explain the origin of the energy being delivered to the resistor
A photon with wavelength 4 x 10^-15m converts to a muon/antimuon pair. The rest mass energy of the muon and the antimuon is 105.7 Mev. find the combined kinetic energy of the muon and antimuon
A 5.000 kg mass starts from rest and slides down on an inclined plane that is 5 degrees above the horizontal. If the body starts from rest and takes 1.25 s to travel a distance along the inclined plane, what is the final velocity of the body
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10?2cm , mounted coaxially within a cylindrical anode with a radius of 0.5580cm, Find its speed vfinal when it strikes the anode
what rate must air be moving through the open window in order to keep the system in equilibrium.
A 145-g ball was thrown into the air at an initial velocity of16 m/s. (Assume the ball started at ground level.) The ball reacheda maximum height of 13 m. What was the kinetic evergy when the ball reached maximumheight (before it started traveling do..
A non-uniform beam of length 4.41m and weight 1.02kg makes an angle of 25.2 with the horizontal. Find the vertical component of the force exerted on the beam by the pivot
A spring with a spring constant of 251.9 N/m is compressed by 0.230 m. What is the speed of the ball bearing right after it loses contact with the spring
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