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A solenoid of 200 turns carrying a current of 2 A has a length of 25 cm. What is the magnitude of the magnetic field at the center of the solenoid?
An electron gun in an old television picture tube is a device that uses an electric field to accelerate electrons. What magnitude of electric field is needed to accelerate an electron from rest to a speed of 4.0x10^7 m/s in a distance of .01m.
A mercury barometer reads 750 mm on the roof of a building and 766 mm on the ground. Assuming a constant value of 1.29 kg/m3 for the density of air, determine the height of the building
A rotating cylinder about 16 km in length and 7.0 km in diameter is designed to be used as a space colony. With what angular speed must it rotate
a 5.0 kg crate is transferred to a lower level by means of an 8 m long frictionless slide. the height of the top end
Three equal positive point charges of magnitude Q = 3.00? C are located at three corners of a square of edge length d = 8.9 cm. What is the magnitude of the attractive force on the negative charge
you have a 100.00 cm track inclined at 10.000 degrees. You roll a steel ball down the track until it drops off the track and falls 1.0000 m to the floor
The scale of a spring balance reading from 0 to 235rm {N} has a length of 15 rm{cm}. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.7rm {Hz}. What is the mass of fish? In Kg.
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 74.6kg , Jill has a mass of 44.0kg, What is the final speed of the crate if Jill jumps first and then Jack, again in the same..
A particle (m = 3.9 x 10 ^-28kg) starting from rest, What is its de Broglie wavelength at the end of this period
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
A solid, uniform ball roll without slipping up a hill as shown. Initially, at the bottom of the hill, the ball has a linear speed of 25.0 m/s. How far from the foot of the cliff does the ball land
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