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An asteroid of mass 58,000 kg carrying a negative charge of 15.0 ?C is 180 m from a second asteroid of mass 52,000 kg carrying a negative charge of 11.0 ?C. What is the net force the asteroids exert upon each other? (G = 6.673 × 10-11 N•m2/kg2 and k = 9.0 × 109 N•m2/C2.)
A 21.5-g bullet is fired from a rifle. It takes 2.15 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 620 m/s. find the average net force exerted on the bullet
Jane and Jon, with masses of 50 kg and 60kg, respectively,stand on a frictionless surface 10m apart, What is JOhn's acceleration
A Cessna aircraft has a liftoff speed of 120 km/h. How long does it take the aircraft to become airborne
A camera flashtube requires 8J of energy per flash. The flash duration is 2m/ss}. What power does the flashtube use while it's flashing?
A boat's mast is held by two cables, one attached to the front of the ship and the other to the back. What is the force acting upwards on the mast exerted by the boat at the bottom of the mast
question1find out the tension in each of the two ropes supporting a hammock if one is at an angle of 14 above
A car with 68 -diameter tires accelerates uniformly from rest to 20 in 10. How many times does each tire rotate
A flat sheet of crystalline quartz has a thickness of 2.1 cm. It is on top of a flat sheet of diamond that has a thickness of 3.0 cm. how far would it have traveled in a vacuum
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail, what is the diameter of the nail
A square metal sheet 3.3 cm on a side and of negligible thickness is attached to a balance and inserted into a container of fluid. What is the surface tension of the fluid
Two masses of 27 kg and 18 kg are suspended by a pulley that has a radius of 12 cm and a mass of 9 kg, Determine the speeds of the two masses as they pass each other
During a bad weather day with an atmospheric pressure of 0.9 atm a submarine dives at a depth of 9.3 m.
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