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A 10 gauge copper wire carries a current of 24 A. Assuming one free electron per copper atom, calculate the magnitude of the drift velocity of the electrons.
A cannonball launched with an initial velocity of 161 m/s at the angle of 45 degrees follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is it going when it hits the balloon? What is the accelera..
The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. The mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain by the block and tackle pulley system. What is the work done..
How is the voltage divided among resistors in parallel and What happens to resistance when resistors are connected in parallel
The engine of a motorboat delivers 29.8 kw to the propeller while the boat is moving at 18.0 m/s . What would be the tension in the towline
A 6,000 lb car is traveling SW at 40 mph. it is hit by another car that weighs 7,000 lb and is traveling NNE at 50 mph. What is the speed and direction of the cars immediately after the collision
Rumor has it that a photographic camera on a spy satellite can read the license plate of an automobile on the ground. what must be the diameter of the aperture of the camera
A large steam pipe is covered with 1.7-cm-thick insulating material of thermal conductivity 0.31 J/(s m °C). How much energy is lost every second when the steam is at 185 °C
A circular loop of conducting wire is placed in a magnetic field of 0.45T while the free ends of the wire are attached to a 30ohm resistor. What are the magnitude and direction of the current in the resistor
(a) What is the x component of the net electrostatic force on particle 3. (b) What is the y component of the net electrostatic force on particle 3
q1. a tennis ball is served at 73.12 ms and was in contact with the racquet for .027 s and starts from rest. the ball
A circular wheel has a radius R = 0.45 + or - 0.02 m. The wheel is observed to be rotating uniformly with period T = 2.00 +or- 0.05 s. Compute the frequency with which the wheel spins
Find the work done by 2.96 moles of an ideal gas if its volume doubles at a constant temperature of 23.2°C
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