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The wire in a heating element of an electric stove burner has a 0.75-m effective length and a 2.0*10^-6 m cross-section area. The wire is made of iron.
(a) What is its resistance when the stove is off (ie. 20 degree C)?
(b) When on, it operates at a 370 degree C temp. What is its operating resistance?
three concentric conducting spherical shells have radii a, b, and c such that a
A popcorn kernel initially at rest explodes into two pieces, one piece having twice the mass of the other. What is the ratio of the velocities of the fragments
A 47.0g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 24.6 m. neglect air resistance and determine the kinetic energy of the ball at its highest point.
A partly-full paint can has 0.82 U.S. gallons of paint left in it. What is the volume of the paint
the drawing shows a hydraulic chamber in which a spring spring constant1600nm is attaches to the input piston and a
A uniform disk has a mass of 4.6 kg and a radius of 0.2 m. The disk is mounted on frictionless bearings and is used as a turntable. What is the final angular momentum of the system
In a loop-the-loop ride a car goes around a vertical, circular loop at a constant speed. The car has a mass m = 222.0 kg and moves with speed v = 16.16 m/s. What is the minimum speed of the car
A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm, At what point does the ball have maximum speed
A lightning bolt consisting of electrons moves from the cloud to the ground near the equator. What direction is the bolt deflected by the Earth's magnetic field
a 1.54 wide 1.34 high 1400 car hits a very slick patch of ice while going 20.0 . air resistance is not negligible. if
A university physics department buys 100m of string and determines its total mass to be 0.150kg. what is the required string tension
suppose the apparatus as used in this lab: A cube of mass M = 500 g and side length 30 mm is free to spin on an axis through the center of one face. A massless pulley on this axis has a diameter of 2r = 10 mm. An object with m = 50 g is hung from ..
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