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As Achilles approaches Boagrius, Boagrius throws his spear at Achilles. If the spear was traveling at 15 m/s when it strikes Achilles shield and penetrates 15 cm before coming to rest, Find what was the average force acting on the 4.5 kg spear?
During a panic stop, a car decelerates at 7.00 m/s^2. What distance does the car travel in this time
While on a vacation to Kenya, you visit the port city of Mombassa on the Indian Ocean. Calculate the muzzle velocity necessary to hit a pirate ship 300 meters from the base of the fort
A playground merry-go-round has a radius of 4.60 m and a moment of inertia of 240 kg*m^2 and turns with negligible friction about a vertical axle through its center. How much work did the child do on the merry-go-round
A constant retarding torque of 15 m·N stops a rolling wheel of diameter 0.50 m in a distance of 21 m. How much work is done by the torque
q1. a golf ball with an initial angle of 50deg lands exactly 229 m down the range on a level course.a neglecting air
A block of mass m = 2.5 kg rests on a frictionless floor. It is attached to a spring with a relaxed length L = 6 m. By what amount is the spring extended
A solenoid is wound with a single layer of insulated copperwire of diameter 2.500 mm and has a diameter of 5.000cm and is 1.800 m long. How many turns are on the solenoid
a ball is released from top of a 98m tall building. At the same instant a second ball is thrown straight up from the ground with an initial speed of 28m/s directly below the point, what are the balls velocities just before the collision
A fan at a rock concert is 35m from the stage, where sound intensity level is 125 dB. Her eardrums have a diameter of 8.07mm. How much energy is transferred to each eardrum in one second? (Distance from the speaker to the edge of the stage is 1 m...
The temperature difference between the inside and the outside of a home on a cold winter day is 49°F. Express this difference on the Celsius scale.
An asteroid is in a nearly circular orbit of radius 5.668 AU about the Sun. Determine the period of this asteroid
In the park, a mom pushes tangentially on a hand-drivenmerry-go-round and is able to accelerate it from rest to afrequency of 20 rpm in 10.0 s. What force is required at the edge
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