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A neutral copper bar oriented horizontally moves downward through a region where there is a magnetic field out of the page. Which diagram correctly shows the distribution of charge on the bar?
A cart of mass 240 g is placed on a frictionless horizontal air track. A spring having a spring constant of 6.5 N/m is attached between the cart and the left end of the track. Find the period at which it oscillates
Gold has a molar mass of 197 g/mol. How many moles of gold are in a 9.09 g sample of pure gold, How many atoms are in the sample
A 60 W light bulb is 30% of the electric energy is converted to light energy. How many joules of thermal energy does the light bulb use each minute? How many joules does the light bulb convert into light each minute it is in operation?
Assume that each of these individual charges has a mass of 5*10^-18kg. If one charge is released and allowed to be pushed away by the other charges (which are held in place), what will be the final velocity of the free charge? (Assume the potentia..
Future space stations will create an artificial gravity by rotating. What rotation period will provide "normal" gravity
A college professor keeps 0.25 L (0.00025 m^3) of hot coffee in a thick styrofoam container. at what rate is heat flowing out through the walls of the container
a mass-spring system has bm wnaught5 where b is the damping constant and wnaught the natural frequency.how does its
Find the length of a simple pendulum if its frequency for small amplitudes is 0.65 Hz
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 8.48 x10^7 km. Radio waves travel at the speed of light (3.00 x10^8 m/s). How many seconds does it take for the signal to reach the Earth.
The International Space Federation constructs a new spaceship thatcan travel at a speed of 0.995c. Mary boards the spaceship totravel to Barnard's star which is 5.98 ly away. After reachingBarnard's star, the spaceship travels slowly around the st..
The skateboarder in the drawing starts down the left side of theramp with an initial speed of 6.47 m/s. If non-conservative forces,such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached..
A jet is circling an airport control tower at a distance of 22.0 km. Find the distance traveled (in meters) by the jet as the observer watches the nose of the jet cross from one side of the moon to the other
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