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The drawing shows two long, straight wires that are suspended from a ceiling. The mass per unit length of each wire is 0.051kg/m. Each of the four strings suspending the wires has a length of 1.2m. When the wires carry identical currents in opposite directions, the angle among the strings holding the two wires is 15°. What is the current in all wire?
Professor Dodds is performing a nuclear experiment in a particle accelerator. The particle has an initial position of -30 meters, an initial velocity of 3 m/s, What is the average velocity over the time interval
A 10 g bullet traveling at 360m/s strikes a 8.0kg , 0.90-m-wide door at the edge opposite the hinge. What is the angular velocity of the door just after impact
A sprinter running the 100 m dash has a constant acceleration of 2.8 m/s2 for the first 4.1 seconds of the race, when he reaches his top speed, and then continues to run at that speed for the rest of the race. How long does it the sprinter to run t..
Two carts on a frictionless air track are made to travel toward each other. As they collide they stick together. if the cart on the left has a mass of 250 grams and is moving at 0.2 meters per second to the right.
Here is a simple heat engine: Start with 20 moles of monatomic gas, occupying 0.50 m3 of volume at 400 K. Calculate the temperature at the end of each process
A football is thrown vertically upward with a speed of +20.0 m/s. Find its velocity when it returns to the level from which it started
in an 8-ounce glass of water estimate the available d-d fusion energy. for how long could this energy provide the
In a Compton collision, if the wavelength of the photon is 1.00 pm and its deflected angle is 60.0°
A capacitor has parallel plates of area 12 cm2 separated by 4.5mm . The space between the plates is filled with polystyrene, Find the induced surface-charge density on the surface of the dielectric
a cube of ice is taken from the freezer at -8.5 and placed in a 92 aluminum calorimeter filled with 314of water at room
The sun, mass 2.0 X 10^30 kg, is revolving regarding the center of the Milky Way galaxy, which is 2.2 X 10^20 m away. It completes one revolution each 2.5 X 10^8 years. Estimate the number of stars in the Milky Way.
the record of 203.1 km/h for speed skiing set by franz weber at velocity peak in colorado was achieved in a mountain slope inclined downward at 51 degrees. what is the rate at which gravity does work on the skier
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