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A football is kicked across a level field. The ball spends 2.27 s in the air and lands 74.8 meter from the point where it was kicked. Find what is the maximum height reached by the ball? (Neglect air resistance; g = 9.8 m/s2)
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed vfinal of the electron
A lens in Lick Observatory's 36-inch refracting telescope has a thickness of 1.96 inches at its center and an index of refraction n=1.52. What is the light speed in the lens
A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. What is the the magnetic field on the axis of the solenoid
What must the charge (sign and magnitude) of the particle of mass 1.42 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 650 N/C.
Calculate kinetic energy of a solid uniform sphere with a radius of 0.150 and a mass of 16.0 if it is rotating at 6.20 about an axis through its center
Bob can throw a 460 g rock with a speed of 32 m/s. What is Bob's maximum power output as he throws the rock in kW
baseball toward home plate at 85 miles per hour with a spin of 1800 revolutions per minute. Explain how many rotations does it make on a path of 60 feet?
A copper sheet with length 1.77 m, width 0.587 m, and thickness 1.27 mm is oriented so that its largest surface area is perpendicular to a magnetic field of strength 4.93 T. What is the magnitude of the force on this sheet
a polymer molcule is 3.05μ m long. the ends of themoleculebecome singly ionized-negative on end end, determine the effective spring constant of the molecule
Planet Z is 12,000 km in diameter. The acceleration due to gravity on Planet Z is 7.0 m/s2.
A car in a roller coaster moves along a track that consists of a sequence of ups and downs, Derive a general expression for the speed v of the car
A rotating cylinder about 12.00 km in length and 8.00 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the same acceleration because of gravity on Earth.
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