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A 55 kg swimmer is standing on a stationary 225 kg floating raft. The swimmer then runs off theraft horizontally with a velocity of +4.7 m/s relative to the shore. Find the recoil velocity that the raft would have if there were no friction and resistance due to the water.
A factory workeraccidentally releases a 175 kg cratethat was being held at rest at the top of a 3 m long ramp inclined at 38° to the horizontal. How far will it subsequently slide across the factory floor
The centripetal acceleration of a rotating disk is 5.9 m/s2. The radius of the disk is 0.74 m. What is the angular velocity of the disk
What is the mass of the CORE of the Sun?
What must the charge (sign and magnitude) of a 1.43 g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 630.
A 0.45kg piece of putty is dropped from a height of 2.5m above a flat surface. find the magnitude of the average force exerted on the putty
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
An 845-N sled is pulled a distance of 173 m. The task requires 1.20 x 10^4 J of work and is done by pulling on a rope with the force of 142 N. At what angle is the rope held.
Two rockets approach earth from opposite directions at equal speeds relative to the earth. How fast are the rockets moving with respect to the earth
A harmonic wave travels in a wire with amplitude 6.05 mm, wavelength 0.451 m, and frequency 462 Hz. What is speed with which the wave travels.
How do I calculate final velocity of a planet moving around a star? The things I know are the positions of star/planet initial V of the planet, Final velocity of the planet after the force of the sun has acted on it
A car of mass M = 1100 kg traveling at 45 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
On a roller coaster ride the total mass of the cart - with passengers included - is 305 kg. Peak K is at 47.5 m above the ground, peak L is at 28.5 m. How much energy is lost due to friction between the two peaks
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