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A baseball is hit from a height of 1.0m at an initial velocity of 27.0 m/s, 45.0 degrees above level ground, and lands on a rooftop 13.0m high when it falls back down.
a. Find the maximum height the ball reaches.
b. Find the total time the ball spends in the air.
c. Find the horizontal displacement of the ball from where it was hit to where it landed.
An electron moving with a speed of 4.7×105m/s in the positive x direction experiences zero magnetic force. Find the components of the magnetic field
A 12-kg block (M) is released from rest on a frictionless incline that makes an angle of 28 degrees. How far does the block move down the incline from its rest position to the stopping point
Calculate and compare the electron densities of a piece of aluminum 1 cm thick and a piece of iron of the same density thickness. Show your work & please be sure to compare.
At what rate in grams per second must water evaporate from a towel placed over the keg to cool the keg at the same rate that energy is being absorbed?
A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -1.6 x 10-9 C is acted on with a downward electrostatic force of 4.5 x10-6 N when placed in this field. What is the magnitude of the electric fie..
A muscle builder holds the ends of a massless rope. At the center of the rope, a 7.9 kg ball is hung as shown. What is the tension in the rope
A closely wound circular coil with a diameter of 4.00cm has 600 turns and carries a current of 0.500 A. What is the magnetic field at the center of the coil
A thin uniform rod has a length of 0.510m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. What is the mass of the rod and bug
The tires of a car make 58 revolutions as the car reduces its speed uniformly from 91km/h to 36km/h . The tires have a diameter of 0.84m. how much more time is required for it to stop
Suppose a ball leaves the ground upward at an angle of 45 degree to the horizontal, with an initial speed of 14.14m/s, What is the maximum height reached by the ball
Old naval ships fired 14 cannon balls from a 240 cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship.
two wires are tied to the 300 g sphere. the sphere revolves ina horizontal circle at a constant speed of 7.5 m/s. what is the tension in each of the wires
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