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A 55-kg mass ice skater standing stationary on very slipper ice (negligible friction) throws a 0.45 kg baseball with a speed of 27 m/s in the horizonatal direction. What is the speed of the skater after the ball is thrown?
An airplane is descending at an angle of 20 deg with respect to the horizontal when it drops a bomb, determine the range (horizontal distance traveled) of the bomb and the velocity at which it hits the ground.
Speedboat A negotiates a curve whose radius is 115 m. Speedboat B negotiates a curve whose radius is 194 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
One particle has a mass of 3.00 10-3 kg and a charge of +8.40 µC. A second particle has a mass of 6.00 10-3 kg and the same charge. Find the initial separation between the particles
A system gains 3400 J of heat at a constant pressure of 1.36 × 105 Pa, What is the change in the volume of the system
A block with mass m = 7.0 kg is attached to two springs with spring constants kleft = 37.0 N/m and kright = 48.0 N/m. The block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) What is the magnitud..
Astronomers determine that a nearby galaxy is moving toward our galaxy at a speed of 720.0 km/s with respect to the Earth, what was the wavelength emitted by the star
Calculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 6.00 cm/s
A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
How fast (in {rm rpm}) must a centrifuge rotate if a particle 8.5 cm from the axis of rotation is to experience an acceleration of 115000 {rm g}'s.
A soccer player kicks the ball off the ground at an angle ? above the horizontal. The ball is in the air for 3.0 seconds, Find the soccer ball's initial horizontal (vox) velocity component
Young's double-slit experiment is performed with 570 nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.64 mm from the central maximum. Settle on the spacing of the slits.
You place a 4.47-mm-high diamond on the axis of and 11.3 cm from a lens with focal length -6.79 cm. How high is the image
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