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If 2.77 x 1020 electrons flow through a cross section of a 4.66 mm diameter Copper wire in 7.82 s, then what is the drift speed of the electrons? (The density of conduction electrons in Copper is n = 8.50 x 1028 1/m3.)
A beam of sunlight encounters a plate of crown glass at a 52.70° angle of incidence. Find the angle between the violet ray and the red ray in the glass
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
A battery's ideal voltage is 12.0 V; its internal resistance is 1.46 ohms. If the battery is attached in series to a 21.5-ohms resistor, what is the actual voltage supplied by the battery?
The planet Jupiter revolves around the Sun in a period of about 12 years (3.79 × 108 seconds). What is its mean distance from the center of the Sun? The mass of the Sun is 1.99 × 1030 kilograms. A. 1.1 × 10^11 meters B. 1.5 × 10^11 meters C. 2.3 ×..
In what direction should the pilot travel in this direct flight. Find out the distance she walks.
A ball is thrown straight up with a speed of 30 m/a, and air resistance is negligible. What is the maximum height reached by the ball
A circuit component operates at 20 Volt and 0.50 Amp. A transformer with 300 turns in its primary coil is used to convert 120 Volt household electricity to the proper voltage, Find how many turns must the secondary coil have
A 4.0 kg block is on horizontal table attatched to a 6.0 kg block hanging from frictionless pulley. what is the acceleration of the system
Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.90 m/s2, What angle does the ramp make with respect to the horizontal
A 1500-kg car moving east at 39 m/scollides with a 1700-kg car moving southat 15 m/s and the two cars stick together. What is the velocity of the cars right after the collision?
White light is incident normally on a thin soap film having an index of refraction of 1.34. What is the thickness of the soap film
A 25.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 20.00 m. When she is partway down the slide, Calculate the mechanical energy lost due to friction
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