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A one pound weight is released 3 feet off the ground. At the same time a two pound weight is released 5 feet off the ground. When will the two weights have the same altitude? Assume no air friction.
A refracting telescope has an objective lens with a focal length of 2.30 m and an eyepiece with a focal length of 3.50 cm. by what factor is the angular size of an observed object reduced
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. The ray reflects from the mirror and strikes the wall. Find the angle of incidence of the laser ray on the mirror
a 73 kg skydiver can be modeled as a rectangular box with dimensions 21cm x 44cmx 1.8m? what is his terminal speed if
A certain lightbulb has a tungsten filament with a resistance of 18.0 when cold and 138 when hot. Find the temperature of the hot filament
An air bubble originating from a under-water diver has a radius of 9.4 mm at some depth h. When the bubble reaches the surface of the water, Determine the depth of the diver
a consider an arbitrary electrostatic field configuration. a small test charge is placed at a null point i.e. where e
A curve of radius 72m is banked for a design speed of 125km/h.If the coefficient of static friction is 0.34 (wet pavement), at what range of speeds can a car safely handle the curve
A suction cup works by virtue of a vacuum that is build within the cup. When the cup is pressed against a flat plane, determine the pressure inside the suction cup
The radius of our galaxy is 3 *10^20m, How much time would elapse on earth during the traversal
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. Calculate the length of pipe required for the pipe system.
the surfer in the photo below is catching a wave. suppose she starts at the top of the wave with a speed of 1.5 ms and
question an asteroid of mass 59000 kg carrying a negative charge of 12.0 muc is 170 m from a second asteroid of mass
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