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A laser emits a single, 2.0-ms pulse of light that has a frequency of 2.83 ´ 1011 Hz and a total power of 75 000 W. How many photons are in the pulse?
A curve in a highway has radius of curvature 130 m and is banked at 3.5°. On a day when the road is icy, what is the safest speed to go around the curve
You have a lens whose focal length is 5.17 cm. You place an object on the axis of the lens at a distance of 11.5 cm from it. How far is the object\'s image from the lens
The two masses in the Atwood's machine shown in the figure have an initial speed of = 0.25 , and is moving upward. How high does rise above its initial position
A driver travels northbound on a highway at a speed of 28.0 m/s. What frequency does the driver observe as the police car approaches
When a tuning fork of frequency 360 Hz is held above a tube filled with water the resonances are found when the water level is at 25cm and 75cm
In a real or imaginary nucleus of 51 x ^108, how many protons are in the nucleus and how many neutrons are in the nucleus
An archer wishes to shoot an arrow at a target at eye level a distance of 43.5 m away. what angle should the arrow make with the horizontal
A toroidal solenoid has a mean radius of 11.0 cm and a cross-sectional area of 5.00 cm2 and is wound uniformly with 100 turns. A second coil with 500 turns is wound uniformly on top of the first. What is the mutual inductance of these coils.
A lens for a 35-mm camera has a focal length given by f = 40mm. What is the magnification of the image on the film
The temperature of 15 kg of water increases at 0.003 degrees Celsius per second. At what rate is the internal energy of the water increasing
Water can hold 36 grams (g) of salt in every 100 milliliters (mL). The ocean contains 3.6 g of salt in every 100 mL. As a solution, which is seawater.
Through what angle in degrees does a 33 rpm record turn in 0.25 s? If the diameter of the record is 12 inches, what is the speed of the outer rim of the record
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