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Two identical point charges (q = +5.40 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.510 m. A test charge (q0 = -4.50 x 10-8 C), with a mass of 9.60 x 10-8 kg, is released from rest at one of the corners of the square. Determine the speed of the test charge when it reaches the center of the square.
A 9.91 -m ladder with a mass of 22.3 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 257 N. What is the net torque acting on the ladder
The total electric field consists of the vector sum of two parts. One part has a magnitude of E1 = 1200 N/C and points at an angle ?1 = 35o above the +x axis. Find the magnitude and direction of the total field
A 10-kg fish is being yanked upward out of the water and the fishing line breaks. If the line is rated to a maximum 200 N tension, then what was the minimum acceleration of the fish? DRAW THE FBD!
A high-voltage transmission line with a resistance of 0.34 omegacap.gif/km carries a current of 960 A. What is the power loss due to resistance in the line
An object is 23.2 cm from the surface of a refiective spherical Christmas-tree ornament 5.11 cm in radius. What is the apparent position of the image
A potential difference of 14.0 V is applied across a wire of cross-sectional area 5.01 mm2 and length 745 km. What type of wire is this
a proton of atomic mass 1u with a speed of 750 m/s collides elastically with another proton at rest. What is the final speed of the target proton after the collision
Two spherical asteroids have the same radius R. Asteroid 1 has mass M and asteroid 2 has mass 2M. What is the speed of each asteroid just before they collide
A man pushes a 16kg block from rest to speed v doing 1200 j of work in the process, during this time, find the horizontal force exerted on the block
A charged rod carrying a negative charge is brought near two conducting spheres that are in contact with each other but insulated from the ground. If the two spheres are then separated, what charge does B have, positive, negative or neutral?
A 4.9 cm tall object is placed 25 cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 3.9 cm tall. Where is the image located? What is the focal length of the mirror?
A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s2. what is the magnitude of the total acceleration a
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