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A ball is traveling horizontally over a volleyball net when a player "spikes" it, driving it straight down to the ground. The ball's mass is 0.21 kg, its speed before being hit is 6.4 m/s and its speed immediately after the spike is 21 m/s. What is the magnitude of the impulse from the spike?
Vector has a magnitude of 63 units and points due west, while vector B has the sasme magnitude and points due south. Find the magnitude and direction of a) A + B and b) A - B. Specify the directions relative to due west.
A series RLC circuit consists of a 107 ohm resistor, a 15.0 mH inductor, and a 0.500 nF capacitor. What is the power supplied to the circuit if w =1/2wo
A circular armature coil is used in a motor with a uniform magnetic field of 1.80 T. The coil has a diameter 95 cm, how much current is flowing throught the motor
q1. a wheel 45.0 cm in diameter accelerates uniformly from 206rpm to 340 rpm in 7.0 s. how far will a point on edge of
A 120g ball moving at 0.50 m/s in the + x direction is subject to a 0.25 N force in the - y direction for 2.5 s, Find the balls final speed
A 30.0kg - goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2m and period 1.60s.b, What is the maximum acceleration of the finch
A silicon solar cell looks like a battery with a 0.33Vterminal voltage. What is the solar cell's efficiency-that is, what percentage of the energy incident on the cell is converted to electric energy
question1a frictionless pulley has the form of a uniform solid disk of mass 4.00 and radius 23.0. a 1.80 stone is
A 151 kg car rounds a curve of radius 163 m at 46 m/s. The acceleration of gravity is 9.8 m/s2 . What force must the road exert on its tires to hold the car on course? find out its speed when it has moved?
What angle does water surface make with the horizontal
The speed of the fastest-pitched baseball was 45.0 m/s , and the ball's mass was 145g. How many joules of kinetic energy did this ball have
Two blocks are connected on a horizontal frictionless table and pulled to the right with a force F= 60 N. compute the tension in the string connecting the two blocks
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