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Find the center of mass of a system composed of three spherical objects with masses of 3.4kg , 2.3kg , and 4.2kg and centers located at (-6.2m , 0), (2.0m , 0), and (2.8m , 0), respectively.
A radar for tracking aircraft broadcasts a 12.0GHzmicrowave beam from a 2.00m -diameter circular radar antenna, What is the diameter of the radar beam at a distance of 30.0km
Burning a pound of coal produces about 13,000 Btu of energy. How many megajoules of energy are produced by burning 4 pounds of coal?
A slingshot fires a pebble from the top of a building at a speed of 14.0 m/s. The building is 28.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground
A string 0.5 m long with mass density 0.0003 kg/m and is vibrating 200 cycles per second. What hanging mass would produce this tension
What is the speed of light in crown glass (n = 1.52) and What is the speed of light in ethyl alcohol (n = 1.36)
Light is incident on a piece of flint glass (n=1.66) from the air in such a way that the angle of refraction is exactly half the angle of incidence. What are the values of the angles of incidence
Two cars collide head on while each is traveling at 90. What is the temperature increase of each car
you notice that the image flips when you are 0.500 m from the mirror. Determine the radius of curvature for the mirror
A light spring-gun projectile launcher is mounted on an .443 kg air track glider. find the speed of the air-track glider after the gun is fired
A rotating water pump works by taking water in at one side of the rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120m starts from rest and accelerates at 30.50 rad/s2.
A standard violin string is 32.8 cm long from the tuning peg to the bridge. When played open(without pressing a finger against the fingerboard), What is the speed of the wave on the string
Josh starts his sled at the top of a 3.3m -high hill that has a constant slope of 25 ^\circ. How far from the base of the hill does he end up
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