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a spacecraft moves past a student with a relative velocity of .90 c. if the pilot of the spacecraft observes 10 min lapse on his watch, how much time has elapsed according to the student's watch.
The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel
A solid, horizontal cylinder of mass 7.1 kg and radius 0.57 m rotates with an angular speed of 5.84 rad/s about a fixed vertical axis through its center. What is the final angular speed of the system
A microwave radio transmitter emits electromagnetic waves of a single wavelength. calculate the maximum magnetic field at this distance
An automobile with a mass of 940 kg goes around a curve with a radius of 64m.The coefficient of friction between the tires and the road is 0.700. Illustrate what is the maximum speed with which the car can go around the curve ?
Fred and Barney are two electric charges that are to begin with held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they ..
A satellite circling the earth has an average power consumption of 350.0 W. what area is required for the solar panels
An astronomical telescope is designed with an overall magnification of 80x. The objective has a focal length of 98.0 cm. What should be the focal length of the eyepiece
An electron is accelerated from rest through a potential difference that has a magnitude of1.65 107 V. what is the relativistic kinetic energy (in joules) of the electron
0.023mol of a diatomic gas, with initial temperature 25?C, How much heat is added during this process
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.7 kg · m2. find the resulting angular speed of the student and the stool
A half-Atwood's machine consists of two masses, m1 = 8 kg and m2 = 5 kg, which are connected by a light string that passes over a pulley. what speed will it have just before hitting the floor
A swimmer at the bottom of a pool 3m deep looks up and sees a circle of light. If the index of refraction of the water in the pool is 1.33, find the radius of the circle.
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