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The figure shows two connected wires that are made of the same material. The current entering the wire on the left is 2.0 A, and in that wire the electron drift speed is Vd. What is the electron drift speed in the wire on the right side?
You push with a horizontal force of 48.0 against a 23.0 box, pressing it against a rough wall to hold it in place. What is the friction force on the box
a 200-m-wide river flows due east at a uniform speed of 4.8 ms. a boat with a speed of 8.6 ms relative to the water
q1. if a car travelling at 63 kmh will skid 18 m when its brakes lock how far will it skid if it is travelling at 150
A college student produces about 127 kcal of heat per hour onthe average. What is the rate of energy production in watts? How many kilocalories of heat does the operation of a 1195 Whair dryer produce each second?
A 3.7 kg box is sliding down a surface that is inclined downwards by 30° below the horizontal. How much energy of the box has been lost
A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 195 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground.
The light shining on a diffraction grating has a wavelength of 495 nm (in vacuum). Determine how many lines per centimeter does the grating have
One mole of an ideal gas does 2500 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 28.0 L. Determine the temperature of the gas
A closely wound rectangular coil of 90.0 turns has dimensions of 25.0cm by 41.0cm. What is the average emf induced in the coil
A 256Hz sound wave in 20°C air propagates into the water of a swimming pool. What are the water-to-air ratios of the wave’s frequency, wave speed and wavelength?
A section of copper paneling is constructed with an area of 0.85 m^2 and a thickness of 0.04 inches. If the copper paneling is initially lying on the ground and the ground is at a temperature of 4 oC and the Air is at 21.11 oC how much energy is co..
A spherical object with a moment of inertia of 0.482mr2 starts from rest rolling down a 3.14-m high incline. what is its linear speed at the bottom of the incline
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