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A starship blasts past the earth at 2.0*10^8 m/s .Just after passing the earth, the starship fires a laser beam out its back of the starship. With what speed does the laser beam approach the earth?
David is driving a steady 24 when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant while David passes. How far does Tina drive before passing David.
q1. a 65 kg hiker has fallen down a hole. one rescuer attaches a rope to the injured hiker and then a second rescuer
A large storage tank, open to the atmosphere at the top and filled with water, Determine the speed at which the water leaves the hole
X-rays are scattered from a target at an angle of 78.0° with the direction of the incident beam. Find the wavelength shift of the scattered x-rays
A ten pound car wheel has a moment of inertia of 0.38 kg m2. While rotating at a constant speed the wheel makes 35.64 revolutions in 5.5 s
A 35 mm camera has an adjustable aperture (size of the opening over the lens). This aperture size is labeled as the "f-stop" which is equal to f/D. what is the smallest angle between two green objects
What is the sound level of a sound whose intensity is 6.5 × 10-8 W/m2, What is the intensity of a sound whose sound level is 30 dB
Pulsars are neutron stars that emit X rays and other radiation insuch a way that we on Earth receive pulses of radiation from thepulsars at regular intervals equal to the period that they rotate.Some of these pulsars rotate with periods as short a..
The electrical field within a continuous distribution of charge is given by the equation E= cxi+cyj+czk, Write the equation for E in terms of the position vector r
The rms current in a copy machine is 3.00 A, and the resistance of the machine is14.6 Ω. What is the average power?
A lens system consists of two lenses 48.5 cm apart. The first lens is convex (converging) and has a focal length of 25.22 cm. What is the focal length of the second lens
a particle of mass m moves in a potential given byvx-v0a2a2x28a4x4a sketch vx and fxb discuss the motions which
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