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The electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash. In one such unit, the potential difference between the plates of an 920-?F capacitor is 420 V. (a) Determine the energy that is used to produce the flash in this unit. (b) Assuming that the flash lasts for 6.7 ms, find the effective power or "wattage" of the flash.
A compound microscope has the objective and eyepiece mounted in a tube that is 18.0 cm long. The focal length of the eyepiece is 2.28 cm, what is the focal length of the objective
The diameter of our disk-shaped galaxy, the Milky Way, is about 1.0 105 lightyears (ly). find the distance between the centers of the two plates
A 70.0-g object connected to a spring with a force constant of 25.0 N/m oscillates with an amplitude of 6.00 cm on a frictionless, horizontal surface. Find the total energy of the system
The sun radiates electromagnetic energy at the rate of 3.91×1026 W. What is the change in the sun's mass during one second? Express the answer as a positive mass
An auto race is held on a circular track. A carcompletes one lap in a time of 18.9 s, with an average tangentialspeed of 42.6 m/s. evaluate the radius of the track
a 6.00 kg bowling ball is rolling at 9.00 m/s. It collides with a 1.50 kg bowling pin at rest. What is the velocity of the ball after the collision
Use the data of this table to find the point between Jupiter and the Sun at which an object can be placed so that the net gravitational force exerted by Jupiter and Sun on this object is zero
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. What is the final state of the hydrogen atom
question a spherical object has an outside diameter of 50.0 . its outer shell is composed of aluminum and is 1.80
A slinky with N even loops of area A is L long. You hook it up to a circuit and increase the current at a rate of 2.0 A/s, Now calculate the new induced EMF
A 62.5 skier is moving at 6.00 on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.10 long. How fast is the skier moving when she gets to the bottom of the hill
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 190 mi/h in 2.00 s. (a) Find the average acceleration of the plane. Your response is within 10% of the correct value. This may be due to round..
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