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A person stands on the roof of a 15 m tall building and throws a rock with a velocity of magnitude 30 m/s at an angle 33o above the horizontal. you can neglect air resistance.
a) Find the maximum height above the roof reached by the rock
b) Find the magnitude of the velocity of the rock just before it strikes the ground?
if the solenoid in exercise 5.5 is free to turn about the vertical direction and a uniform horizontal magnetic field of
A tank of a car holds 16 gallons , a liter is .264 gallons, 1 inch equal 2.54 cm, and 1mile equal 1609 m, how many km can it travel on one tank if it gets 25mpg
An elevator cab and its load have a combined mass of 1600kg. Find the tension in the supporting cable when the cab, originallymoving downward at 12m/s
q1. an electric field is set up between two parallel plates each of area 2.2 m2 by putting 1.0 c charge on one plate
Two solid spheres, each of mass m, are rolling without slipping with a speed v. If the spheres have radii R1 and R2 with R1/R2 = 7.3, what is the ratio of their kinetic energies
An electromagnetic wave strikes a 1.69-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is4.84 x 10-4 T. How long does it take for the wave todeliver 1120 J of energy to the wall?
An object is placed in front of a converging lens in such aposition that the lens (f = 17.0cm) creates a real image located 30.0 cmfrom the lens. What is the image distance of this new image
Four objects are situated along the y axis as follows: a 2.06 kg object is at +2.96 m, a 2.97 kg object is at +2.42 m, a 2.51 kg object is at the origin, Where is the center of mass of these objects
The angular momentum of a flywheel having a rotational inertia of 0.200 kg m2 about its central axis decreases from 5.00 to 1.20 kg m2/s in 2.20 s. What is the average power of the flywheel
a 75 kg swimmer dives horizontally off a 500 kg raft. if the divers speed immediately after leaving the raft is 4 ms
A racetrack is to have a banked curve with radius 225 m. What should be the angle of the bank if the normal force alone is to allow safe travel around the curve at 57.5 m/s
a point on the outer rim of a tire on a moving vehicle exhibits uniform circular motion with a frequency of 28 hz. the
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