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Two very small plastic balls of equal mass are released from rest. One of them carries +10 µC of excess charge and the other one carries +1µC of charge. No other charges or fields are present. Which of the following statements are true about them as they move away from each other? (There may be more than one correct choice.)
A torque of 24.0 N m is applied to a solid disk, accelerating itfrom rest to an angular velocity of 140.0 rpm. (The disk has a massof 2.00 kg and a radius of 0.200 m.) What is the final rotational kinetic energy of the disk?
Two electrons are placed at two corners of an equilateraltriangle whose sides are 2.0 nm long. ( 1 nm =10-9m) Calculate the magnitude of the electric potential (referenced to V = 0 at infinity) present at the empty corner of the triangle due to the..
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.
You have been called to testify as an expert witness in a trial involving an automobile accident. How fast was this car traveling (to the nearest number of mph) just before the driver hit his brakes
to suck lemonade of density 986 kgm3 up a straw to a maximum height of 3.82 cm what minimum gauge pressure in
A student, late for class, ran up some stairs between landings. The landings are 10.5 meter apart. Find the average power that the student was generating during the run
a ball is tossed so that it bounces off the ground rises to a height of 1.30 m and then hits the ground again 1.70 m
A 70 kilogram diver steps off a 10 meter tower and drops from rest straight down into the water. Find the average resistive force exerted on the diver by the water
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.596 m. Find the final speed v of the sphere's center of mass
an alpha particle nucleus of a helium atom consists of two protons and two neutrons and has a mass of 6.64x 10 -27 kg.
Consult Interactive Solution 7.10 for a review of problem-solving skills that are involved in this problem. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates.
two stationary point charges of 3.00 nc and 2.00 nc are separated by a distance of 55.0 cm. an electron is released
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