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A 2g marble is fired vertically upward using a springgun. The spring must be compressed 3.2cm if the marble is tojust reach a target 10 m above the marble's position on thecompressed spring.
A) what is the change in gravitational PEof the marble-Earth system during the 10m ascent?
B) what is the change in elastic PE of the spring during itslaunch of the marble?
C) what is the spring constant?
A current travels northwards along a power line, in the downwards magnetic field of the earth. In which direction will the magnetic force on the wire be directed
If the mass of Jupiter is 1.8 x 10^27 kg, then find the escape velocity for an object launched from the surface of Jupiter
How many electrons would have to be added to one of these spheres to make it electrically neutral?
A film of oil lies on wet pavement. The refractive index of the oil exceeds that of the water. what is the longest visible wavelength (in vacuum) for which the film will appear bright due to constructive interference
What is the total contact force on the log by ropes 1 and 2 combined? (e) First give the magnitude of the N-S component of the combined contact forces of ropes 1 and 2. You have to decide for yourself if this combined component points North or Sou..
A ball rolling down an incline travels 6.0m in the first 0.25 seconds, and 24m in the first 0.50 seconds. What is the average speed for the first time interval
A 5 kg mass is connected to a spring (1000 N/m) platform which undergoes simple harmonic motion in the vertical direction with two complete oscillations each second. What is the speed of the box at the equilibrium position
An object with mass m1 = 3.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the acceleration of each object and the tension in the cable
In an experiment like you are going to do in Investigation 1 of lab this week, you count the number of beta rays from a 137Cs source. What is the average number of counts
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
In the process of making lead shot, molten lead is drippedinto water. The lead forms small drops that harden to formthe shot. what is the final temperature
A 250 N beam hangs from a cable. The beam moves at a constant velocity. What is the force on the cable
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