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When a current flows in an aluminum wire of diameter 2.13 mm, the drift speed of the conduction electrons is 1.83 × 10-4 m/s. What is the electron current in the wire? The conduction electron density in aluminum is 6.00 × 1028 m-3.
A 50.0 kg skier is at the top of a slope. At the initial point at the top is 25.0 m vertically above point at the bottom. find the change in Potential energy of the skier-Earth system as the skier goes from top to bottom
A mass of 2 kg is attached to a spring with spring constant k=100 N/m. What is the period of oscillation for the mass
what is the Tension in the string, distance of spheres from one another at equilibrium, the charge on each sphere.
The distance to the Andromeda Galaxy is estimated at about 2 x 10(6) light years. A light year is distance traveled by light in one year; if the speed of light is 3 x 10(8) m/s, about how far is it from our galaxy to Andromeda? (1 year =3.15 x 10(..
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. Determine the ratio of the energy used by the blow-dryer in 17 minutes to the energy used by the vacuum cleaner in 46 minutes
A cart that is initially at rest moves down a slope that is inclined at 5o above the horizon, What is its final speed at the end of the slope
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
The barrel has a length of 0.60 m and an opening whose radius is 2.8 10-3 m. A bullet (mass = 2.7 10-3 kg) has a speed of 380 m/s after passing through this barrel. Ignore friction and examine the average pressure of the expanding gas.
At a construction site, a 63.0 bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 83.0 box on the horizontal roof. The cable pulls horizontally on the box, and a 45.0 bag of g..
On Apollo Moon missions, the lunar module would blast off from the Moon's surface and dock with the command module in lunar orbit. Find the impact speed of the lunar module
Visible light passes through a diffraction grating that has 900 slits per centimeter, What is the difference between these wavelengths
A 1600kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2500kg SUV traveling from east to west. How fast was sedan traveling just before the collision
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