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A particle with a charge of 4C and a mass of 12kg is travelling in a circular path around a fixed particle of charge -3C. The velocity is observed to be 3x10^3 meters per second. What is the radius of the circular path?
Two point charges of equal magnitude are d = 8.0 cm apart. At the midpoint of the line connecting them, their combined electric field has a magnitude of E =45 N/C. Find the magnitude of the charges
A collision between two pucks on an air-hockey table. Puck A has a mass of 0.025 kg and is moving along the x-axis with a velocity of +5.5 m/s. It makes a collison with puck B, which has a mass of 0.050 kg and is initially at rest.
A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, plates are disconnected from the battery. define the behavior of the ball.
A battery of internal resistance r = 0.2 and emf E = 12.0 V. If the battery is connected to a device of resistance 6.0 (ohms), What is the electric power output of the battery
How much energy does a 100 watt light bulb use in 1 hour? Express your answer in joules Also find how much money it costs if electricity sells for 10 cents per kW-h.
A horse walks in a 24 ft diameter circle, making 144 trips around the circle in one hour. Using the currently accepted value of 746 watts for 1 horsepower, calculate the force in pounds with which the horse must have been pulling.
A field mouse trying to escape a hawk runs east for 4.0 , darts southeast for 3.0 , then drops 0.50 down a hole into its burrow. What is the magnitude of the net displacement of the mouse
Using a 673-nm wavelength laser, you form the diffraction pattern of a 0.109-mm wide slit on a screen. How far is the screen located from the slit
Four identical springs with k= 67.1kN/m support a car, with the car's weight distributed equally among them. Find the maximum weight for the car
how many joules of energy does a 100-watt light bulb use per hour? how fast would a 70-kg person have to run to have
A light pipe consists of a central strand of material surrounded by an outer coating. The interior portion of the pipe has an index of refraction of 1.60 .
Assume the masses of the chains, pulleys, and ropes are negligible. Determine the force F required to lift the crate with constant speed. Identify the tension in the upper chain.
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