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If a rubber ball of mass 1.0 kg is dropped from a height of 2.0 m and rebounds on the first bounce to 0.75 of the height from which it was dropped, how much energy is dissipated through the collision with the floor?
the armature of a simple ac generator has 30 circular loops of wire each with a radius of 10 cm. it is rotated with a
A 2.3-kg cart is rolling along a frictionless, horizontal track towards a 1.6-kg cart that is held initially at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases. At a certai..
A helium weather balloon is used to lift a meteorological sensor package high up into the atmosphere. Calculate the number of moles of helium in the balloon
A spaceship moves away from Earth at a speed 0.297 c, Determine the speed of the shuttle relative to Earth
A 3800 kg car travels round an unbanked corner(i.e. a horizontal road) at the recommended speed of 65 km h-1. What forces would the road need to exert if the car was traveling at 100 km h-1
A pendulum bob of mass 0.5 Kg is suspended by ahorizontal string of length 1 m and let go. What is the final speed of the block
A water bed has dimensions of 1.83 m x 2.13 m x 0.229 m. The floorof the bedroom will tolerate an additional weight of no more than6660 N. Find the weight of the water in the bed to determine whether it should be purchased.
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up.
Diagnostic ultrasound of frequency 6.10 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min. What is the average speed for the entire trip
A satellite is put in a circular orbit about Earth with a radius equal to 45% of the radius of the Moon's orbit. What is its period of revolution in lunar months
a compressor operates at steady state with air entering at 1 bar 20 deg celsius and exiting at 5 bar. a if the air
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