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While walking around your apartment in socks you shuffle your feet across the floor and realize that you've accumulated a positive charge of +9 nC (9 x 10^-9 C).
a. Have electrons been removed from you, or have portons been added?
b. How many electrons have been removed or portons added?
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.56 m radius and is 1.8 m high. The walls are 1.0 cm thick.
Two infinite long wires are parallel to one another and are 5.0 cm apart. Both have current passing through them in the same direction. What is the resulting force on the 1.0 A wire
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0 degrees above the horizontal. The rocket is fired toward the ground 11.0-m high wall, which is located 27.0 m away. By how much does the rocket clear the top of the wa..
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10.00 radius of curvature. What is the car's speed at the bottom of dip? What is the car's speed at the bottom of the dip?
A 85-tonne (1 t = 1000 kg) spacecraft moving in the + x-direction at 0.38m/s docks with a 70-tonne craft moving in the -x-direction at 0.62m/s
The eight ball m = 0.5 kg is initially moving with a velocity v = 4.2i m/s. What is the magnitude of the velocity of the eight ball after the collision in m/s
Two resistors have resistances R(smaller) and R(larger), where R(smaller)
The accompanying pressure-volume graph shows an engine cycle with one isothermal process, B-C. What is the net work done by the gas during one cycle
A cold room has walls constructed of 0.24 m brick on the outside, 0.15 m foam insulation in the middle and 1.6 cm of wood on the inside. Calculate the outside and inside surface temperature of the composite wall
During a car crash a 65 kg person's head goes from travelling at 50 km ??!??to stationary in 0.15 s. What is the magnitude of the average net force acting on the person's 4.5 kg head
A particle that has an 8.3-?C charge moves with a velocity of magnitude 4 × 105 m/s along the +x axis. Find the magnitude and direction of the magnetic field
Two trains, each having a speed of s, are headed at each other on the same straight track. what is the total distance the bird travels
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