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Blocks A (mass 4.50 ) and B (mass 13.00 ) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 7.00 . The blocks are equipped with ideal spring bumpers. The collision is head-on, so all motion before and after the collision is along a straight line. Let +x be the direction of the initial motion of A. Find the velocity of each block after they have moved apart. Find the velocity of A.
A simple pendulum is 4.00 m long. What is the period of small oscillations for this pendulum if it is located in an elevator accelerating upward at 2.00 m/s2
A mirror produces an image of the sun, and the image is located 0.9900 m from the mirror. What is the algebraic expression for the object distance do of the tree from the mirror
A 200-g hockey puck is launched up a metal ramp that is inclined at a 30 degree angle. What speed does the puck have when it slides back down to its starting point
The wavelength ?max at which the spectral radiancy of a cavity radiator has its maximum value for a particular temprature T is give by the Winch displacament law, or ?maxT=a constant (=2.898X10^-3 m.K). The efective surface tempratureof the sun is..
The two stick together and move off with a speed of 4.0 m/s. Evaluate what is the mass of the second car?
Several people are riding in a hot-air balloon. The combined mass of the people and balloon is 348 kg. how much mass should be dropped overboard
A capillary tube with a closed end is place into water.
A 50-m length of wire is stretched horizontally between two vertical posts, Find the magnitude of the earth's magnetic field at the location of the wire, assuming the field makes an angle of 67.0° with respect to the wire
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
A person pushes the shopping cart with a force of 100 N acting down at 45 degrees. Of the cart travelled at a constant speed of 1.00 meters per second what is the value of combined retarding force acting horizontally on the cart due to friction an..
If the elevator's descending speed is measured at 10 m/s at a given point, but its speed is decreasing by 2.7 m/s2, what is a force exerted by the scale.
A simple circuit is set up that only consists of a 12 V battery connected to a light bulb with a resistance of 4 Ohms. What current flows through the light bulb
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