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Two long current-carrying wires run parallel to each other and are separated by a distance of 3.50 centimeter. If the current in one wire is 1.65 Amp and the current in the other wire is 3.25 Amp running in the opposite direction, find the magnitude and direction of the force per unit length the wires exert on each other.
You warm 1.85kg of water at a constant volume from 21.5C to 29.0C in a kettle. For the same amount of heat, how many kilograms of 21.5C air would you be able to warm to 29.0C? Make the simplifying assumption that air is 100% N2.
A 5.00-liter aluminum cylinder at 5.00°C is filled to the brim with gasoline at the same temperature. If the aluminum and gasoline are warmed to 69.0°C, how much gasoline spills out
Express your answer with the appropriate units.
When spiking a volleyball, a player changes the velocity of the ball from 4.0m/s to -28m/s along a certain direction. what is the mass of the volleyball
A 920 kilogram sports car collides into the rear end of a 2300 kilogram unstopped at red light. Determine the speed of the sports car at impact
A baseball leaving the bat at 46o at a height of 1.2 meter from the ground clears a 3 meter high wall 125 meters from home plate. Estimate what is the initial velocity of the ball
A playground merry-go-round has a radius of 4.60 {rm m} and a moment of inertia of 250 kg m^2 and turns with negligible friction about the vertical axle through its center.
In a dramatic lecture demonstration, a physics professor blows hardacross the top of a copper penny that is at rest on a level desk. what is the minimum air speed needed to lift the penny off the table top
calculate the buoyant force due to the surrounding air on a man weighing 800n . assume his average density is the same
A steel bar is clamped at both ends. The bar is 20 m long. Draw the fundamental, and the second and third harmonics of the standing wave. Determine what are the three wavelengths
if you close the switch which quantity reaches its maximum value first current in the circuit or voltage across the
A 60.0 cm long organ pipe is filled with air and is open at both ends. What is the wavelength of the fundamental frequency
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