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A meter stick is found to balance at the 49.7 cm mark whenplaced on a fulcrum. When a 41.0 gram massis attached at the 8.0 cm mark, thefulcrum must be moved to the 39.2 cm mark for balance. What is the mass of the meter stick?
g
A positive object touches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves? Answer They move closer together. They are unaffected. They separat..
Some European trucks run on energy stored in a rotatingflywheel, with an electric motor getting the flywheel up to its topspeed of 200rad/s. What is the kinetic energy of the flywheel after charging
Jone pulls her brother on a sled over a horizontal surface with force of 80N. The force is at an angle of 25 degree, determine the acceleration of the sled
A small button placed on a horizontal rotating platform with diameter 0.310m will revolve with the platform, How far from the axis can the button be placed, without slipping, if the platform rotates at 59.0rev/min
Determine the plate scale and field-of-view for the 8192x8192 pixel MOSAIC imaging camera on the 4-m Mayall Telescope at Kitt Peak Observatory. MOSAIC is a prime focus instrument (f/2.95) and has 15µm pixels
a bucket of mass 2 kg is whirled in vertical circle of radius 1.10m. at the lowest point of its motion the tension in the rope supporting the bucket 25 N, find the speed of the bucket
a basketball leaves a players hands at a height of 2.25 m above the floor. the basket is 3.05 m above the floor. the
A 56 kg woman and a 78 kg man stand 13.0 m apart on frictionless ice, How far from the man is their center of mass
At a large business, employees must report to work at 7:30 A.M. The arrival times of employees is approximately symmetric and mound-shaped with mean 7:22 A.M. and standard deviation 4 minutes.
in her job as a dental hygienist kathryn uses a concave mirror to see the back of her patients teeth. when the mirror
Moist air at 12oC and 80% R.H. enters a duct at a rate of 150 m3/min. The mixture is heated until it exits at 35oC. The pressure remains constant at 100 kPa. Determine (a) the rate of heat transfer, and (b) the relative humidity at the exit.
The block starts at the top of the wedge at 1.2 m. Find out the final speeds of a block and the wedge once the blook has slid to the bottom.
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