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A child is twirling a 0.0215-kg ball on a string in a horizontal circle whose radius is 0.143 m. The ball travels once around the circle in 0.586 s.
(a) Determine the centripetal force acting on the ball.
(b) If the speed is doubled, by what factor does the centripetal force increase?
question1later than the sun exhausts its nuclear fuel its ultimate fate will be to collapse to a white dwarf state. in
assume a bar 2 m long expands 0.6 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
A 1.0 cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 550 nm. What are the angles of the first two diffraction orders
A small bird's wings can undergo a maximum displacement amplitude of 5.00 cm, what is the oscillation frequency of the wing tips
Mass m ? 20kg is released from rest from the top of a frictionless ramp of height h = 1.8 m and length d = 2.4 m. How much work does the spring do on the mass during the compression
Because it can go from rest to 27.0 m/s (about 60 mi/h) in 4.0 s, one of the fastest-accelerating animals is the cheetah. determine the average power developed by the cheetah
Lillian (mass 32.0 kg) standing on slippery ice catches her leaping dog (mass 15 kg) moving horizontally at 2.0 m/s. Evaluate what is the speed of Lillian and her dog after the catch?
A small block of mass 20.0 grams is moving to the right on a horizontal frictionless surface with a speed of 0.500 m/s. What is the speed of the 40.0 gram block after the collision
A horizontal force of 2 N does nothing to move a large book along a desk, but a force of 1.8 N can keep the book sliding at constant speed on the same desk. Explain
Two objects with masses represented by m1 and m2 are moving such that their combined total momentum has a magnitude of 16.3 kg · m/s, Determine the mass of each object
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
A gray kangaroo can bound across level ground with each jump carrying it 9.2 from the takeoff point. what is the max height above the ground
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