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A metallic sphere has a charge of +4.7 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.3 109 electrons are transferred. What are the charges of the sphere and the rod now?
The electrical power output of a large nuclear reactor facility is 890 MW. It has a 34.0% efficiency in converting nuclear power to electrical. What is the nuclear power output in megawatts
two particles are fixed to an x axis particle 1 of charge q1 2.43 x 10-8 c at x 22.4 cm and particle 2 of charge q2
a ball with a mass of 12 kg is traveling towards the left at a speed of 10 ms another ball with a mass of 14 kg is
Walk 10 miles in the direction 54 degrees east of due north. Then walk 4 miles in the direction 23 degrees south of due east. How far will you be from your starting point?
During a very quick stop, a car decelerates at 7.2 m/s2. Assume the forward motion of the car corresponds to a positive direction for the rotation of the tires, How long does the car take to stop completely in seconds
The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. A protonis moving horizontally toward the west in this field with a speedof 6.50*106 m/s.
A ball rolls down a board which is 20 degrees to the horizontal. This time there is a coefficient of kinetic friction of 0.1. What is its speed at the bottom of the board
An object with mass 4.0 is attached to a spring with spring stiffness constant 230 and is executing simple harmonic motion. When the object is 1.9×10?2 from its equilibrium position, it is moving with a speed of 0.65 . Calculate the amplitude of the ..
An earth satellite moves in a circular orbit with an orbital speed of 6100 m/s. Find the time of one revolution of the satellite
a certain volcano on earth can eject rocks vertically to a maximum height h.a how high in terms of if would these rocks
What mass of water at 30.0°C must be allowed to come to thermal equilibrium with a 2.15-kg cube of aluminum initially at 1.50 × 102°C to lower the temperature of the aluminum to 77.0°C? compute the mass of the aluminum cup
You have 3.0 moles of helium gas initially at a temperature of 350 K, and a pressure of 0.20 x Patm, How much heat flows into the gas
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