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A technician wraps wire around a tube of length 40.0 cm having a diameter of 7.90 cm. When the windings are evenly spread over the full length of the tube, the result is a solenoid containing 575 turns of wire.
(a) Find the inductance of this solenoid.
mH
(b) If the current in this solenoid increases at the rate of 3.00 A/s, find the self-induced emf in the solenoid?
mV
A person is performing a knee extension exercise with a 100 N weight acting at the ankle. What is the torque at the knee necessary to maintain a knee joint angle of -60q relative to the right horizontal passing through the knee joint
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. The horizontal distance from A to B is x = 5 ft, and the vertical distance is y = 4 ft. If the squirrel jumps with an initial speed..
A device used in radiation therapy for cancer contains 0.29 g of cobalt-60 (59.933 819 u). Determine the activity (in Bq) of the radioactive material
How far from the firing point is the height of the projectile.
An arrow is launched vertically upward from a crossbow at 97.9 m/s. Ignoring air friction, what is its instantaneous speed at the end of 10.0 s of flight? What is its average speed up to that moment? How high has it risen? What is its instantaneou..
A sample contains radioactive atoms of two types, A and B. Initially there are five times as many A atoms as there are B atoms. obtain the half life in hours
A 94 g stone is whirled in a horizontal circle on the end of a 73 cm long string. The stone takes 1.10 s to make each complete revolution. Conclude the angle that the string makes with the horizontal.
How many revolutions does the ball make during its fall. Now assume that the ramp is frictionless, so that the ball slides instead of rolling. Through what horizontal distance d does the ball move before landing in this case.
An eye has trouble seeing an object closer than 60 cm but needs to see objects at 25 cm from it. find the focal length of a correctly prescribed contact lens
A 79.0 kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, the vertical height of 4.40m.What is the work completed on the man by the gravitational force and the escalator.
Boiling Water at High Pressure. When water is boiled under a pressure of 2.00 atm, the heat of vaporization is 2.20 multiply.gif 106 J/kg, Compute the increase in internal energy of the water
A football is kicked from ground level and lands 57.0 m downfield. What max heigh above the ground does the ball reach
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