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A tube with a 3.0-mm radius has ions flowing through it along its length. To determine the rate at which the charge is being moved through the tube, the magnetic field just outside the tube is measured and found to be If the only contributor to the magnetic field is the moving ions, and if the walls of the container are very thin and do not screen magnetism, what is the magnitude of the current flowing through the tube? (?0 = 4? × 10-7 T ? m/A)
What is the velocity of the ice skater after throwing the snowball. avoid friction and air resistance.
What is the potential energy of the elevator
Two cesium-133 atomic clocks differ by one second in 6000 years. Assume one of the clocks gains one second in six thousand years, approximately what is the change in the number of oscillations of the light each second?
A skater with an initial speed of 7.10 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. How far will the skater travel before coming to rest
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3, find the volume of helium in the balloon when fully inflated
A small statue has a height of 3.4 cm and is placed in front of a concave mirror. Find the focal length of the mirror
A block is dropped onto a spring with a spring constant, k, of 27 n/m. the block has a speed of 2.2 m/s just before it strikes the spring. what is the increase in potential energy of the spring
A 0.14-kg pinecone falls 16 m to the ground, where it lands with a speed of 13 m/s. What was the average force of air resistance exerted on the pinecone
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
A uniform disk of mass .53kg and radius 11cm is constrained to rotate on an axis about its center. find the KE attained by the system
A child is playing with a ball on a string. The ball has mass 0.065 kg, the string has radius 1.2 m and assume that the string is massless. What is the maximum tension in the string
A flowerpot is accidently knocked off the edge of a balcony 50 m above the ground. Find the velocity and acceleration of the flowerpot at t=2.0s
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