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Estimate the number of electrons present in a (neutral) 1.6kg block of carbon.
A proton at speed v=3.20*105 m/s orbits at a radius of 2.4 cm outside a uniformly charged sphere. Determine the total charge on the sphere
The earth revolves around the sun in 365 days in nearly circular orbit with a radius of 2.4 x 10^8 km. what is the linear speed of the earth in its orbit?
A diver tucks her body in midflight, decreasing her moment of inertia by a factor of two. By what factor does her angular speed change
Calculate the time it takes the sled to travel 21 m down the slope and draw a free-body diagram for the sled sliding down the slope.
Assume the balloon and rod to be point charges. The Coulomb force constant is 1/(4? ?0) = 8.99 × 10^9 N·m2/C2 and the acceleration due to gravity g = 9.81 m/s2.
A 100 W lightbulb is plugged into a standard 120V outlet. How much does it cost per month (30 days) toleave the light turned on continuosly?
You connect five identical resistors in series to a battery whose EMF is 12.0 V and whose internal resistance is negligible. obtain the potential difference across each resistor
Suppose you are on Mars when it is 9x10^10 m from earth. You call earth for the correct time and receive a recorded message indicating that the time at the tone is exactly 5:00 pm
A block of mass 50kg is pushed 20m along a frictionlesssurface by a constant horizontal force of 60N, What is the net work done on the block
Communications satellites are placed in a circular orbit where they stay over a fixed point on the equator. Find average speed of the satellite in geosynchronous orbit
A beam of light in air strikes a piece of glas (n = 1.59), Find the angle of incidence if the angle of reflection is twice the angle of refractio
A small rigid cylindrical vessel contains 1 kg of humid air at 80oC under a total pressure of 1 bar. The humid air inside the vessel contains 0.150 kg of water vapor. Determine the relative humidity of the air in the container.
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