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Two astronauts with masses m1 and m2 say good-bye and push each other off in the space. The initial velocity of both was v0, and after the push-off the astronaut with the mass m1 moves with the velocity v1 in the same direction. How much energy was input in the push-off?
A merry-go-round starts from rest and accelerates uniformly over 23.5 s to the final angular velocity of 6.55 rev/min.
A parallel-plate capacitor made of circular plates of radius 85 cm separated by 0.45 cm is charged to a potential difference of 600 volts by a battery. How much additional charge flows from the battery
Three equal charges of magnitude +4.00 uC are placed at the corners of an equilateral triangle of side 2 cm. what is the electric potential energy of the system
A 7.0 kg object undergoes an acceleration of 2.5 m/s2. What is the magnitude of the resultant force acting on it
An outboard motor for a boat is rated at 36 hp h. If it can move a particular boat at a steady speed of 30 km/h , what is the total force resisting the motion of the boat
a a standing wave is described by the expression zxt6sinx2cos40pit find the amplitude frequency wavelength velocity and
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
When the distance is 0.20m the tension is 628 N, horizontal pivot force is 581 N and the vertical pivot force is 839N. What is the mass of the bell
Two different balls are rolled (without slipping) toward a common finish line. Their angular speeds are shown to the right. Find what angular speed would the losing ball have needed to cross the finish line at the same time as the winning ball
Assume a linear velocity profile in a laminar boundary layer on a flat plate with a zero pressure gradient. Find:- d(x). Compare with the more exact solution and compute the percentage error.
During Apollo 14, Alan Shepherd hit a golf ball on the Moon. If he hit the ball at an angle of 15° and an initial velocity of 30m/s, how far did the ball go
A 2.0{\rm mm} -diameter ball bearing has 3.0×109 excess electrons. What is the ball bearing's potential
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