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Romeo is chucking pebbles gently up to Juliet's window, and hewants the pebbles to hit the window with only a horizontalcomponent of velocity. He is standing at the edge of a rose garden4.5m below her window and 5.0m from the base of the wall. How fast are the pebbles going when they hit her window?
A 21.5 g bullet strikes a 0.650 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.30 x 10^3 N/m and sets it into vibration with an amplitude of 21.5 cm. What was the speed of bullet before impact if the bullet and bl..
A satellite is placed in orbit 7.2 x 105 mabove the surface of Jupiter. Jupiter has a mass of 1.90 1027 kgand a radius of 7.14 x 107 m. Find the orbital speed of the satellite
Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with a combined momentum of.
A uniform magnetic field of magnitude B = 0.020 T is in the positive y-direction. Determine the magnitude and direction of the magnetic force on each segment.
A 4.0-kg rock is dropped from a height of 21.0 m. At what height is the rock's kinetic energy twice its potential energy? ?? m A cylinder of gas is at room temperature (20°C). The air conditioner breaks down, and the temperature rises to 49°C. Wha..
q1. an iron plate 30 cm thick is magnetized to saturation in a direction parallel to the surfaces of the plate. a 20
one of the lasing transitions of an argon ion laser is at 488 nm and the transition probability aul 7.8 x 107s. the
De Broglie postulated that the relationship ? = h/p is valid for relativistic particles. What is the de Broglie wavelength for a (relativistic) electron
A simple Pendulum has a mass of 2.00 kg. The mass has a speed of 3.00 m/s, What is the maximum height (from the lowest position) the pendulum will reach
A person's leg measures 40 cm between the knee and the hip, with an average leg diameter of 12 cm. What are the fractions of muscle and fat in the leg
The refractive indices of materials A and B have a ratio of nA/nB = 1.66. What is the speed of light in material B
After an eye examination, you put some eyedrops on your sensitive eyes. The cornea (the front part of the eye) has an index of refraction of 1.38, What is the minimum thickness of the film of eyedrops on your cornea
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