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The drawing shows two positive charges q1 and q2 fixed to a circle. At the center of the circle they produce a net electric field that is directed upward along the vertical axis. Decide the ratio q2/q1.
A solenoid is used as a rotor of an electrical motor. It is 10 cm long and 2 cm in diameter. The wire wrapped around it makes 1000 turns and has a resistance of 100 Ohms. find the electrical power delivered by the battery
Three resistors having resistances of 1.50{\rm \Omega} , 2.30{\rm \Omega}, and 4.70{\rm \Omega} are connected in parallel to a 29.0{\rm V}battery that has negligible internal resistance
A race car goes around a level, circular track with a radius of 1.00 km at a constant speed of 108 km/h. What is the car's centripetal acceleration in m/s2?
A horizontal force of magnitude 31.0 Npushes a block of mass 4.10 kg a distanceof 3.00 m across a floor, where the coefficient of kinetic frictionis 0.600.
The "reaction time" of the average automobile driver is about 0.7s. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 12.0
An organ pipe is open at one end and closed at the other. The pipe is 1.5 m long. Assume the speed of sound in the pipe is 340 m/s. The lowest harmonic frequency for this pipe is ________Hz.
She notices a group of workers down the walkway who have suddenly blocked her path, and she makes a quick stop in 1.8 seconds. What is Suzies average acceleration
A car is traveling at 56.0 km/h on a flat highway. If the coefficient of friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop
To reach a picnic basket, an ant walks from his hill located at 6.00m, 50.0 degress north of east to the basket located at 8.00m 24.0 degress south of east
Electrons are accelerated towards a television picture tube through a potential difference of 1.80 kV. Compute the energy of an electron when it is about to strike the face of the tube.
A 80 kg diver steps off a 13 m tower and drops from rest straight down into the water. If he comes to rest 4.1 m beneath the surface, find out the average resistance force exerted on him by the water.
A 277.4-N force is applied parallel to a 23.8-degree incline to pull a 29.5-kg crate from rest up the incline to a final height of 5.8 meters. Determine the speed of the crate at the top of the incline
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