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A toaster is rated at 580 W when linked to a 70 V source. What current does the toaster carry, and what is its resistance?
While taking photographs in Death Valley on a day when the temperature is 53.0°C, Bill Hiker finds that a certain voltage applied to a iron wire produces a current of 1.000 A. Bill then travels to Antarctica and applies the similar voltage to the same wire. What current does he register there if the temperature is-88.0°C? Suppose that no change occurs in the wire's shape and size.
A typical laboratory centrifuge rotates at 4000 rpm. Test tubes have to be placed into a centrifuge very carefully because of the very large accelerations. What is the acceleration at the end of a test tube that is 10 cm from the axis of rotation
We want to rotate the direction of polarization of a beam ofpolarized light through 90o by sending the beam throughone or more polarizing sheets. What is the minimum number of sheets required
liquid water at 20 degrees c has a constant pressure mass specific heat of cp4181.8. suppose that 1kg of liquid water
There is a glass filled with 20cm of water and on top alayer of 30cm of oil, that exactly weights 0.700Newton. What is the total preassure at the bottom of the glass
a thin uniformly chargde rod has a length l10cm and a linear charge density lambda 5x106 ecm. e is the change of an
Two identical steel balls, each of mass 4.9 kg, are suspended from strings of length 23 cm so that they touch when in their equilibrium position. How high will the other ball rise
A 10.0 g object moving to the right at 15.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 28.0 cm/s. Find the velocity of each object after the collision
Assume a ball is spherical in shape, with a 4 inch radius. If the ball solid, made from crystal, what is the weight in units of newtons of the crystal ball
A rock is thrown vertically upward with a speed of 17.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. A) In how many seconds after being thrown does the rock strike the ground? B) What is the speed of the rock ..
An electric heater carries a current of 12.5 A when operating at a voltage of 3.60 102 V. What is the resistance of the heater
In a physics lab experiment, a student immersed 206 one-cent coins (each having a mass of 3.00g ) in boiling water. What was the final temperature of the coins
Evaluate the z-component of the angular momentum and the kinetic energy of a particle on a ring that is described by the (unnormalized) wavefunctions e^iF ,e^-2iF ,cosF ,(cosf)e^iF , (sinf)e^-iF
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