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A very powerful vacuum cleaner has a hose 2.91 centimeter in diameter. With no nozzle on the hose, compute the weight of the heaviest brick that the cleaner can lift?
N
a 100N force acts for 0.05s on a .10kg ball with an initial velocity of -20m/s, What is the final momentum of the ball
An 8.00g bullet is fired into a 10.kg block of wood suspended on a string. calculate the initial velocity of the bullet
A cave rescue team lifts an injured spelunker directly upward andout of a sinkhole by means of a motor-driven cable. The lift isperformed in three stages, each requiring a vertical distance of15.0 m:
A 9 m, 220 N uniform ladders rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50° angle with ground. How far up the ladder can an 850 N person climb before ladder beg..
A sample of an unknown material appears to weigh 255 N in air and 195 N when immersed in alcohol of specific gravity 0.700. What is the volume of the material
A converging lens (f = 14.9 cm) is located 24.6 cm to the left of a diverging lens (f = -7.07 cm). Locate the final image of the stamp relative to the diverging lens
light rays in a material with index of refrection 1.25 can undergo total internal reflection when they strike the
Without friction, and in the absence of external forces, the sum of the potential and kinetic energies of a body is constant. More power is required while slowly lifting a box than while lifting it up quickly. Energy is required to do work. Work cann..
Water at 33.0 °C is sprayed onto 0.156 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that must be used?
A drop of water on a countertop reflects light from a flower held3.10 cm directly above it. What is the focal length of the water drop
An object placed on an equal-arm balance scale requires 12 kg to balance it. When object is placed on a spring scale, the spring scale reads 12 kg.
When 3880 J of heat are added to a 0.159-m-long silver bar, its length increases by 4.31 x 10-3 m. What is the mass of the bar
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