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Solve the all parts of given question:
Question: A football is kicked from the ground and clears the goal post by 5 ft.
Part A: Assume initial angle of 45 degrees, how fast will the football have to be kicked if the ball is 52 yards from the goal post? (Hint: the crossbar on a goal post is 10 feet above the field.)
Part B. How long did it take to fly through the air?
Rework your solution from the beginning and check each step carefully.
Light enters an equilateral triangle prism in a direction parallel to one side. Find the angle between incoming ray and ray that leaves the prism on the other side
A laser emits a narrow beam of light. The radius of the beam is 3.5 mm, and the power is 2.5 mW. What is the intensity of the laser beam?
An isolated conductor of arbitrary shape has a net charge of +11 x 10- 6 C. what is the charge on the outer surface of the conductor
A satellite is in a circular orbit around the earth. The period of the satellite is 22 hour. Determine what is the speed of the satellite
A canoeist attempts to paddle a canoe due east, directly across a river. Unfortunately there is a current, flowing south at a rate of 3.4 m/s. How far can the canoeist paddle in still water
a vertical spring ignore its mass whose spring stiffness constant is 820 nm is attached to a table and is compressed
An airplane propeller is 2.05m in length (from tip to tip) with mass 122 kg and is rotating at 2200 rpm (rev/min) about an axis through its center. You can model the propeller as a slender rod.
A 2.4-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of the mass/ spring system is 1.3 J. What is the elastic potential energy of the system when the 2.4-kg block is repl..
Two point charges of +1.0nC (located at x=1.0m), Calculate the magnitude of the net electric field at the apex of the triangle
A solenoid is formed by winding 11.0 m of insulated silver (resistivity 1.59 x 10-8 Ω·m) wire around a hollow cylinder. The turns are wound as closely as possible without overlapping and the insulating coat on the wire is negligibly thin.
Suppose wire A and wire B are made of different metals, and are subjected to the same electric field in two different circuits. How many electrons enter wire B every second
An 8.00 gram bullet is fired into a 2.20 kilogram block initially at rest at the edge of a frictionless table of height 1.00 meter. Estimate what is the initial speed of the bullet
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