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A child swings a 0.38-kg ball in a circle on a string that is 1.3 m long. if the ball makes 1.2 rev/s, what is the magnitude of the ball's angular momentum? (Please provide calculations)
An iron tower in is 372 meters tall on a cold day (T = -7.1 degrees Celsius). What is its height of the tower on a hot day
A car starts from rest and moves with an acceleration of 1m/s for 1s. the motor is then turned off and the car is allowed to decelerate, Calculate the total distance traveled by the car
a spring with constant k 800 nm is compressed 12 cm from its equilibrium position. a spring with spring constant k
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.56 s, and the velocity of the car decreases to + 4.62 m/s. What is the car's displacement
Two long, parallel wires carry currents of 0.245 A in the same direction. If the wires are 0.034 m apart, what is the force per unit length between the wires
Two identical speakers are separated by 3.4m and produce sound of different frequencies equally in all direction. Determine the sound level in decibels at the point that is a midway between the speakers
A 4.4 kg block is pushed 6.6 m up a rough 35° inclined plane by a horizontal force of 74 N. estimate the work done by the horizontal force
A mass of 500kg, with a velocity of 25m/s, hits a stationary mass of 200kg. The masses stick together after the collision. What is the velocity of the masses after the collision
question a styrofoam box has a surface area of 0.81 m2 and a wall thickness of 2.0 cm. the temperature of the inner
A very long wire is held under tension by suspending weights from an end that passes over a pulley. What is the speed of the traveling speed
A block is projected up a frictionless inclined plane with initial speed v0 = 8.50 m/s. The angle of incline is ? = 27.7°. How far up the plane does it go
A Tritium (3 1 H) nucleus with kinetic energy of 4.70 MeV is incident on a stationary target of phosphorus (30 15 P); Find the nuclear binding energy of the nucleus 32 16 S
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