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an astronaut on the surface of the moon fires a cannon to launch an experiment package, which leaves the barrel moving horizontally. Assume the free-fall acceleration on the moon is one-sixth of that on the earth.
(a) what must the muzzle speed of the package be so that it travels completely around the moon and returns to its original location?
(b) what time interval does this trip around the moon require?
A charge of +1 coulombs is placed at the 0 cm mark of a meter stick. A charge of +4 coulombs is placed at the 100 cm mark of the similar meter stick.
The "size" of the nucleus in Rutherford's model of the atom is about 1.00 fm = 1.00E-15 m. find the electrostatic potential energy of the pair of protons
What is the coefficient of static between crate and incline
A proton travels through uniform magnetic and electric fields. The magnetic field is in the negative x direction and has a magnitude of 2.77 mT. what is the magnitude of the net force acting on the proton
q1. compute earths gravitational force on the shuttle astronauts while orbiting at an altitude of 220 miles or 354 km
A solid rock, suspended in air by a spring scale, has a measured mass of 9.00 kg. What is the density of the rock
A mass-spring system oscillates on a horizontal frictionless surface with an amplitude of 3.56 cm. If the spring constant is 237 N/m and the mass is 0.400 kg; Determine the mechanical energy of the system
A cannon is fired horizontally with a velocity of 35.0 m/s from a height of 10 meters. With what total velocity does it strike the ground
A ball with radius r1 and mass m1 is attached by a rod of length L to a second ball with radius r2 and mass m2. Where is the system's center of gravity
When driving west toward the Rocky Mountains, you see a peak 2.8 above the horizon. Your GPS gives your current elevation as 1500 , and according to the map, you're 22.5 (horizontally) from the peak. Find the peak's elevation. Express your answer ..
A projectile is fired at an upward angle of 45 degrees from the top of a 265 m cliff with a speed of 350 m/s. Illustrate what will be it's speed when it strikes the ground below?
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an energy of -16.30 eV. What is the energy of the first photon emitted
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