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An iron bar of mass, 0.37 kg, slides down a frictionless incline 0.67 m high. At the bottom of the incline it collides and sticks to a magnet of mass, 1.23 kg. What is the speed of the combined masses after collision.
two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. How far should Rhoda compress the spring to score a direct hit
A football player runs the pattern by the three displacement vectors, , and . The magnitudes of these vectors are A = 4.00 m, B = 18.0 m, and C = 16.0 m. Using the component method, find out the (1) magnitude and (2) direction of the resultant vec..
What potential difference is required to reduce the initial speed of the proton by a factor of 2, What potential difference is required to bring the proton to rest
Light that enters your eyes is focused to form an image on your retina. The optics of your visual system have a total power of about +60 about +20 from the lens in your eye and +40 from the curved shape of your cornea. Surgical procedures to corre..
A neutron in a nuclear reactor makes an elastic, head-on collision with the nucleus of a carbon atom initially at rest. What fraction of the neutron's kinetic energy is transferred to the carbon nucleus
q1. a roller-coaster car speeds down a hill past point a where r1 10.0 m and then rolls up a hill past point b where
A cubical piece of heat-shield tile from the space shuttle measures 0.11 m on a side and has a thermal conductivity of 0.059 J/(s m ·C°). How much heat flows from the outer to the inner surface of the tile in six minutes
A long pipe of outer radius 3.10 cm and inner radius 2.64 cm carries a uniform charge density of 3.22 mC/m3. calculate the electric field r = 6.51 cm from the centerline of the pipe
Suppose a proton accelerator is 3.99 m long and must accelerate protons from rest to a speed of 1.15 x 107 m/s. Ignore any relativistic effects and determine the magnitude of the average electric field
You and your friends are doing physics experiments on a frozen pond that serves as a frictionless, horizontal surface. What was the speed of each person before the collision
A 1450 N uniform boom is supported by a cable as shown. The boom is pivoted at the bottom, and a 1270 N object hangs from its end. Find the tension in the cable holding up the boom
A common capacitor found in the lab is in the form of a cylinder of length 2.5 cm. Suppose it is an air filled cylindrical capacitor with radii 1.4 cm and 1.5 cm. What is the value of the capacitance
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