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A quarterback throws a football toward a receiver with an initial speed of 18 m/s at an angle of 32° above the horizontal. At that instant the receiver is 18 m from the quarterback.(a) In what direction should the receiver run in order to catch the football at the level at which it was thrown?
a 15mw energy laser has a beam exit diameter of 2cm and beam divergence of 0.0002radians.anbspnbspcalculate the power
q1. a planet of mass 8 times 1024 kg is at location lsaquo -4 times 1011 7 times 1011 0 rsaquo m. a star of mass 7
A large truck collides head-on with a small car. how do the forces acting between the truck and car compare during the collision
Two charges, -15 and +3.7 µC, are fixed in place and separated by 2.8 m. (a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie b..
A ball is thrown straight upward. At above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, which has a focal length of 27.0 cm. What is the focal length of the second lens
An air-track glider attached to a spring oscillates between the 10.0 {rm cm} mark and the 58.0 {rm cm} mark on the track. The glider completes 15.0 oscillations in 35.0 {rm s}. What are the (a) period, (b) frequency, (c) amplitude, and (d) highest..
After being struck by the stone, the boat's velocity is 1.9 m/s, due east. Illustrate what is the mass of the boat? Assume the water offers no resistance to the boat's motion.
You are standing in air and are looking at a flat piece of glass (n = 1.52) on which there is a layer of transparent plastic, Find the smallest possible nonzero value for the thickness of the layer
A 40.00-W eletric motor is able to accelerate a 8755 g car from rest to 30.00 mph in 31.10 seconds. Calculate the efficiency of the motor
An atomic bond can be modeled as atoms connected by tiny springs. For an atom tied to a spring the waves, where the positions x is the displacement from the equilibrium position.
A thin flat plate is installed in a water tunnel as a splitter. The plate is 0.3 m long and 1 m wide. The free stream speed is 1.60 m/s. laminar boundary layers form on both sides of the plate. The boundary-layer velocity profile is approximated as p..
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