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A cockroach of mass m lies on the rim of a uniform disk of mass 2.42 m that can rotate freely about its center like a merry-go-round. Initially the cockroach and disk rotate together with an angular velocity of 0.223 rad/s. Then the cockroach walks halfway to the center of the disk.
(a) Find the angular velocity of the cockroach-disk system?
(b) Find what is the ratio K/K0 of the new kinetic energy of the system to its initial kinetic energy?
A satellite has a mass of 6076 kg and is in a circular orbit 4.65 × 105 m above the surface of a planet. What would be the true weight of the satellite if it were at rest on the planet's surface
The drawing shows six point charges arranged in a rectangle. The value of q is 9.0 uC, and the distance d is 0.13 m. Find the total electric potential at location P
A 1.6 kilogram cylinder (radius = 0.10 meter and length = 0.50 meter) is released from rest at the top of a ramp and allowed to roll without slipping. Calculate what is its translational kinetic energy
A solid block is suspended from a spring scale. If the reading on the scale when the block is completely immersed in water is 34.0 N, what are the block's volume and density
Consider two planets in space that gravitationally attract each other. If the mass of one planet is increased six-fold, then the force between them changes by what factor
An air-traffic controller observes two airplane on his radar screen. The first is at altitude 850 meter, horizontal distance 19.8 kilometer and 24.0 degree south of west. Calculate the distance between the two airplane
question at 10 ft. the total pressure on the diver will be 1.3 atm. assuming the diver took a deep breath 6.0l in her
Two cylinders each contain 0.30 mol of a diatomic gas at 300 K and a pressure of 3.0 atm. What is the final temperature of the gas in the cylinder A
The moon revolves aound the Earth in 27.3 days in nearly circular orbit with a radius of 3.8*10^8 m. what is the moon's centripetal acceleration
A cylinder with a movable piston contains 12.1 moles of a monatomic ideal gas at a pressure of 1.5 × 105 Pa. What is the change in volume of the gas
Suppose you stand with one foot on ceramic flooring and one foot on wool carpet, making contact over an area of 80.0cm^2 with each foot. Carpet and ceramic are 2.00cm thick and are 10C on their bottom sides.
Two electrodes are placed in a calcium chloride solution and a potential difference is maintained between them. what is the current in the solution
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