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A lamp is designed to operate at a temperature of 3100K. If the lamp is operated at a higher voltage that raises its temperature to 3550K, what will be the fractional increase in radiant energy?
A tennis player, when performing a serve, applies an average force to a tennis ball of 525 N to a 55 g ball. What is the speed of the ball as it leaves the racket
A 100 block on a frictionless table is firmly attached to one end of a spring with = 27 . The other end of the spring is anchored to the wall. A 22 ball is thrown horizontally toward block with a speed of 5.5.
what is the Tension in the string, distance of spheres from one another at equilibrium, the charge on each sphere.
select the quantity that has changed(velocity or speed) for a car that travels north at 88 km/h and then turns east while continuing to move at 88 km/h. define your answer.
Find the total capacity, total charge and the voltage across C1 and C2 given C1= 15nF and C2= 25nF are connected in parallel across a 200 volt supply
What minimum constant acceleration does this need if the aircraft is to be airborne after a takeoff run of 250 m.
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
Suppose you wish to fabricate a uniform wire from 1.60 g of copper. The wire is to have a resistance of R = 0.580 ? and all the copper is to be used, What must be the length of this wire
If unpolarized light of intensity l0 passes through an ideal polarizer, what is the intensity of the emering light
An alpha particle (the nucleus of a helium atom, with charge +2 and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.6 nm apart
A golf ball of mass 0.045 kg is hit off the tee at a speed of 32m/s . The golf club was in contact with the ball for 3.10×10?3s. Find the impulse imparted to the golf ball
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.139 N when their center-to-center separation is 69.5 cm.
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