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(a) A very powerful vacuum cleaner has a hose 2.68 cm in diameter. With the end of the hose placed perpendicularly on the flat face of a brick, what is the weight of the heaviest brick that the cleaner can lift?
(b) An octopus uses one sucker of diameter 2.68 cm on each of the two shells of a clam in an attempt to pull the shells apart. Find the greatest force the octopus can exert on a clamshell in salt water 26.3 m deep.
Sheena can row a boat at 3.01 mi/h in still water. She needs to cross a river that is 1.26 mi wide with a current flowing at 1.43 mi/h. How long does it take her to cross the river
while taking a ride in a hot-air balloon innapa valley francisco wonders how high he is. to find outhe chooses a
A uniform disk of mass M=12.0 kg and radius R=.75 m is free to rotate about a frictionless axle through its center. compute the roational kinetic energy
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. What is the mechanical energy lost due to friction
it is found experimentally that the electric field in a certain region of earths atmosphere is directed vertically
Use the Fourier series method to evaluate the deviation of the bone subjected to the load, w, which is linearly dependent on its position
A circular disk with the rectangular hole has a radius of 0.540 m and mass of 0.440 kg. It is suspended by a point on its perimeter. The moment of inertia about this point is I_p = 1.7×10-1 kgm2.
a playground merry go round has a radius of 4.40 m and a moment of inertia of 245kg.m^2 and turns with negligible friction about a vertical axle through is center. What is the average power supplied by the child
As a rocket passes the earth at 0.75c, it fires a laser perpendicular to its direction of travel, What is the speed of the laser beam relative to the earth
The speed of an alpha particle is determined to be 8.75×106 m/s. If all of its kinetic energy is acquired by passing through an electric potential, what is the magnitude of that potential
Consider a solid cylinder if mass M and radius rolling down an inclined plane without slipping. Find the speed of its center of mass when the cylinder reaches the bottom.
a 1210-kg car and a 2240-kg pickup truck approach a curve on the expressway that has a radius of 281m. for the angle i
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