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An empty parallel plate capacitor is connected between the terminals of a 7.0 V battery andcharged up. The capacitor is then disconnected from the battery,and the spacing between the capacitor plates is quadrupled. As a result of this change, what isthe new voltage between the plates of the capacitor?
You combine two thin lenses by placing them in contact so that their axes coincide, forming what is called a compound lens. The focal lengths of the lenses are 24.1 cm and –53.9 cm, respectively. Find the focal length of this compound lens?__________..
A 23-g bullet traveling 225 m/s penetrates a 3.2-kg block of wood and emerges cleanly at 185 m/s If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
A wire carrying a 32.0 A current passes between the poles of a strong magnet perpendicular to its field and experiences a 2.12 N force on the 4.00 cm of wire in the field. What is the average field strength
q1. a merry-go-round rotates at the rate of 0.30 revs with an 80 kg man standing at the point 2.0 m from the axis of
The four tires of an automobile areinflated to a gauge pressure of 2.0 x 105 Pa. Determine the weight of the automobile
If it takes light 8 ns to travel 1.655 m in an optical cable, what is the index of refraction of the cable
The elementary particle called a muon is unstable and decays after 2.20 ?s, as observed in its rest frame, What lifetime do you observe for the muon
A laser that produces a spot of light that is 1.20 mm in diameter is shone perpendicularly on the center of a thin, what is the power of the laser
A machine is designed to perform a given amount of work in a given amount of time. Find the power of the second machine
An elevator releases 11200J of gravitational potential energy as descending 4m between floors. How much does elevator weigh.
Calculate the escape velocity for a planet that has twice the mass of Earth and is half the size of Earth
A spherical drop of water carrying a charge of 11 pC has a potential of 590 V at its surface (with V = 0 at infinity). What is the radius of the drop
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