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1) A conducting sphere of radius 2.00 cm (0.020 m) has a charge of 1 micro C deposited on it. What is the magnitude of the electric field in N/C just outside the surface of the conducting sphere?
2) Eight identical spherical raindrops are each at a potential V, relative to the potential far away. They coalesce to make one spherical raindrop whose potential is:
A. V/8B. V/2C. 2VD. 4VE. 8V
3)Two parallel-plate capacitors with different capacitance but the same plate separation are connected in series to a battery. Both capacitors are filled with air. The quantity that is the same for both capacitors when they are fully charged is:
A. Potential differenceB. Stored energyC. energy densityD. electric field between the platesE. charge on the positive plate
A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground and bounces. What is the change of the ball's momentum during the bounce
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.12 106 m/s. Find the centripetal acceleration of the electron
a dish of hot food has an emissivity of 0.39 and emits 15 w of thermal radiation. if you wrap it in aluminum foil which
in a scientific test conducted in arizona a special cannon called harp shot a projectile straight up to an altitude of
Water flows at 5.0;{rm L}/{rm s} through a horizontal pipe that narrows smoothly from 10 cm diameter to 5.0 cm diameter. A pressure gauge in the narrow section reads 50 kPa. What does the other pressure gauge read.
Assuming that the bricks are lifted with constant speed, illustrate what is the minimum power the motor must produce?
If an astronaut dropped a small rock near the surface of Neptune, how far (in m) would the rock fall in 1.5 s
A space station is constructed in the shape of a hollow ring of mass 6.00 x 10^4 kg and radius 130 m. how much work is done to get the space station spinning
Waves on a 10 meter rope travel at 20 m/s. You shake the rope back and forth until you get a standing wave with a single antinode. find the wavelength and frequency of each standing wave
How much heat flows from 1.00 kg of water at 46.0°C when it is placed in contact with 1.00 kg of 22°C water in reaching equilibrium, What is the change in entropy due to this heat transfer
A child's sled has rails that slide with little friction across the snow. Logan has an old wooden sled with heavy iron rails that has a mass of 8.0kg quite a bit for a 28kg child! Logan runs at 4.0m/s and leaps onto the stationary sled and holds o..
Tim walks half of the time and runs the other half. In terms of given quantities, in the special case that, what will be Tim's margin of victory.
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