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A long solenoid has 130 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.80 cm perpendicular to the solenoid axis. The speed of the electron is 0.058 c (c = speed of light). Find the current i in the solenoid.
The coefficient of kinetic friction between a refrigerator (mass 125 kg) and the floor is 0.18, What is the minimum force required to keep it moving with a constant velocity
Two cars approaching each other collide and stick together after the collision. What was the initial velocity of the second car
A car travels due east with a speed of 42.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain with respect to the following reference frames
Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. What is her height above the river at her lowest point
The driver of a car wishes to pass a truck that is traveling at a constant speed of 20.9m/s . Initially, the car is also traveling at a speed 20.9m/s and its front bumper is a distance 23.1m behind the truck's rear bumper, What is the final speed ..
A car is moving with constant acceleration along a straight road. Determine how the velocity varies for positive acceleration if the car is initially moving to the right with a speed of 10.0 m/s
draw a motion diagram, using the particle model, showing the cars velocity vectors as seen from a helicopter hovering over the highway.
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
You are doing exercises on a Nautilus machine in a gym to strengthen your deltoid (shoulder) muscles. If you have set the tension in the cable of the machine to 33.0 N on each arm, what is the tension in each deltoid muscle if you hold your outstre..
We can use 30kJ of work from a heavy-duty pushing robot that can apply different constant forces. Draw a free-body diagram for the freigh
Planet Z is 1.00x10^4 km in diameter. The free fall acceleration on Planet Z is 5.00 m/s^2. What is the free fall acceleration
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