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A quarterback throws the football to a stationary receiver who is 21.3 meter down the field. The football is thrown at an initial angle of 41.6 degree to the ground. The acceleration of gravity is 9.81 m/s2.
a) Find at what initial speed must the quarterback throw the ball for it to reach the receiver?
a cylinder contains 4.0moles of a monoatomic gas at an initial temp of 27deg C. How much heat flows in to our out of the gas
A rectangle with a length L, and width L/2 has a surface charge density of 3.1mC/m^2. Determine the integral that would give you the electric field at a height h above the middle of the long edge.
0.14 kg of water at 88.0 deg C is poured into an insulated cup containing 0.234 kg of ice initally at 0 deg. Calculate the mass of liquid
A baseball is thrown horizontally from from a height of 44.10 mabove ground with a speed of 33.5 m/s. Where is the ballafter 3.00 s have elapsed?
A metal sphere A has charge Q. Two other spheres, B and C, are identical to A except they have zero net charge. A touches B, then the two spheres are separated
A small marble is dropped from a height of 12 m and comes to rest after penetrating 2.3 cm into sand. a) Determine the marble's impact speed at the sand's surface. b) Determine the marble's deceleration while impacting with the sand.
You are to drive to an interview in another town, at a distance of 298 km on an expressway. What would be the least speed needed for the rest of the trip to arrive in time for the interview
Ultraviolet light is incident normally on the surface of a certain substance. The binding energy of the electrons in this substance is 3.44 eV. How many electrons are emitted from a square centimeter of the surface each second
What is the resistance of a lightbulb that has a rating of115 W? Assume the lightbulb is designed for use in an AC circuit with Vrms =120 V.
A Ferris wheel accelerates from rest to an angular speed of 1.5 rad s-1 in 12 s. what is the net torque on the wheel
a sinusoidal voltage e200sin314t is applied to a resistor of 10 ohm resistance. calculatei r.m.s of the voltage.ii rms
A metal rod with a length of 22.0cm lies in the xy-plane and makes an angle of 37.9 degrees with the positive x-axis, What is the magnitude of the emf induced in the rod
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