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A 2.0 kg mass traveling at 3.0 m/s strikes another 2.0 kg mass traveling at -1.0 m/s. They collide and have a complete elastic collision. If the second mass moves at 3/0 m/s after the collision, what does the first mass do?
A 9.58-m ladder with a mass of 22.2 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 264 N. What is the net torque acting on the ladder
Four point charges, each with Q = 8.8 µC, are arranged at the corners of a square of edge length 1.4 m. What is the electric potential at the center of the square
A 5kg ball moving to the right at 6m/s strikes a 3kg initially at rest. The 5kg ball continues moving in the same direction at 2m/s. find the velocity and direction of the 3kg ball
A microscope is focused on a black dot. When a 1.15 cm-thick piece of plastic is placed over the dot, What is the index of refraction of the plastic
The earth spins in the same sense as it orbits around the sun. find the earth's spin angular velocity about its internal axis
A solid ball of radius r=1cm rolls down at an incline of theta =30 deg which is 1 meter high. what is the speed the bottom of the incline
Consider a point charge with a charge Q, located at the origin, in an empty space. Let the electric potential be zero at infinity. What is the distance r, in meters
You measure distances from the center of a diffraction pattern (y) to a series of dark fringes on a screen, What is the wavelength of the laser you used to collect the data
A submarine is located 1.000 km below the surface of the water. What is the absolute pressure of the seawater on the outside of the submarine
A spring with a constant k of 30 N/m is stretched a distance of 20 cm (0.20m) from its original unstretched position
You are traveling on a hilly road. At a particular spot, when your car is perfectly horizontal, What is the radius of the circular arc in meters
A plane is headed east with an air speed of 205.0 m/s. The wind blows southeast at 32.0 m/s. Determine the velocity of the plane relative to the earth.
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