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Alpha particles of charge q = +2e and mass m = 6.6 10-27 kg are emitted from a radioactive source at a speed of 1.5 107 m/s. What magnetic field strength would be required to bend them into a circular path of radius r = 0.25 m?
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.60 cm. The hose ends with a nozzle of diameter 2.20 cm.
Suppose you have a near-point distance of 16 cm. The angular resolution of the eye is determined by diffraction, What is the smallest object your bare eye can resolve
A 2.0{\rm mm} -diameter ball bearing has 3.0×109 excess electrons. What is the ball bearing's potential
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 940 m/s2 What is the magnitude of the net force acting on the soccer ball at this instant
A projectile is fired at such an angle from the horizontal that vertical component of its velocity is 49 m/s. The horizontal component of its velocity is 61 m/s.
A battery of internal resistance r = 0.2 ohms and emf = 12.0 V is connected to a device with resistance R = 6.0 ohms. What is the rate of heat generated in the battery
A muon is an elementary particle that can be interpreted as the electron's big brother. Calculate its "Compton Wavelength"
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
A certain animal species is equally likely to have blue eyes or brown eyes. What is the entropy of this sample
After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, What is the speed of the ball when it leaves Sarah's hand
Proponents of astrology claim that the positions of the planets at the time of a baby's birth will affect the life of that person in important ways. Calculate the maximum force exerted on the baby by the planet Mars
An electron is accelerated through 2.85 103 V from rest and then enters a uniform 2.40-T magnetic field. What is the maximum magnitude of the magnetic force this particle can experience
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