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Two particles of masses m and 3m are moving toward each other along the x-axis with the same speed v. They undergo a head- on elastic collision and rebound along the x- axis. Determine the final speed of the heavier object.
A 40 kg child sits 1.3 m away from the center of a merry-go-round. If the merry-go-round is traveling with a radial velocity of .78 rad/s, what is the centripetal force on the child
A propeller is modeled as five identical uniform rods extending radially from its axis. what is its rotational kinetic energy
An electron and a proton are each placed at rest in a uniform electric field of magnitude 546 N/C. Compute the speed of each particle 52 ns after being free.
Assume a ray of light is incident on an air / material boundary at 45 degrees to the normal. What is the critical angle for the material when it is surrounded by air
A perscription for a corrective lens calls for +1.5 D. The lensmaker grinds the lens from a "blank" with n=1.55, What should be the radius of curvature of the other surface
What is the rms current in a series RC circuit if R = 5.0k%u03A9 , C = 0.90%u03BCF , and the rms applied voltage is 130V at 69Hz
A candle is placed 16.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 7.5 cm farther away from the mirror. Find out the focal length of the convex mirror.
A block in the shape of a rectangular solid has a cross-sectional area of 4.50 cm2 across its width, a front-to-rear length of 16.0 cm, Whats the conductivity of the material
You give a 2.35 kg book an initial shove at 2.50 m/s, Find the coefficient of friction between book and floor
A bar magnet is oriented with its magnetic dipole moment at 57.3° to the direction of a 0.0357-T magnetic field, Find the magnitude of the magnet\'s magnetic dipole moment
A hydraulic lift is used to jack a 920 kg car 42 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 350 N. What is the area of the input piston
The intensity of an earthquake wave passing through the Earth is measured to be 2.5×106 at a distance of 55 from the source. At what rate did energy pass through an area of 3.0 at 1.0
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