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A proton is (approximately) a spherically symmetrical ball of charge of radius 1 x 10-15 m. If a second proton is brought within touching distance of the first, what is the magnitude of the repulsive electric force?
A battery with an emf of 12.0 V shows a terminal voltage of 11.5V when operating in a circuit with two lightbulbs rated at 3.0 W, What is the battery's internal resistance
A certain substance has a mass per mole of 36 g/mol. When 319 J is added as heat to a 35.0 g sample of this material, How many moles of the substance are present
A car of mass 1,800 kg is initially traveling at a speed of 15 m/s. Calculate the change in the kinetic energy of the car
A point charge q1=5microC and is fixed in place. From a horizontal distance of 6cm a small sphere of mass 0.004 kg and charge q2=2microC is fired towards the fixed charge at 40 m/s. What is the acceleration of the sphere when it is traveling 25 m/..
Mercury flows through a horizontal pipe 1.05 cm in diameter and 1.3 m long. determine the rate of flow through the tube
An ambulance passes a bus stop at 50m/s with a siren of 340Hz, What is the wavelength heard by the bus stop costumers as the ambulance approaches
Two equally charged particles, held 4.7 × 10-3 m apart, are released from rest. The initial acceleration of the first particle is observed to be 7.2 m/s2, find the mass of the second particle
A storage tank 27 m high is filled with pure water, Calculate the magnitude of the net force that acts on a square access hatch at the bottom of the tank that measures 0.6 m by 0.6 m
An eagle perched on a tree limb 19.5 m above the water spots a fish swimming near the surface. How long does it take for the eagle to reach the water
A pendulum swinging in a circular arc under the influence of gravity, has both centripetal and tangential components of acceleration. Where is the centripetal acceleration a maximum
A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology and some basic physics. What is the radius of the arc of the teardrop at the top
As you stand motionless on the sidewalk, you hear an ambulance siren broadcasting a shrill 610hz sound while it is approaching, What speed is the ambulance
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