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A rectangular trough, 1.9m long, 0.50m wide, and 0.30m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge. When you pull the plug, at what speed does water emerge from the hole?
After two days, only one-quarter of a radioactive sample remains. What is the half life of the nuclei
A ball of mass 0.60 kg is fired with velocity 140 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring.
A block of mass 0.570 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m.
A girl with a mass of 60kg springs from a trampoline with an initial upward velocity of 8.0 m/s. what is the maximum height that the girl (with box) reaches
A uniform plank of length 4.30 m and weight 226 N rests horizontally on two supports, with 1.10 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 437 N walk on overhanging part of the plank be..
Two balls of the same mass areaccelerated by the different net forces such that one ball gains avelocity twice that of the other ball in the process.
Light from a heliom-neon laser (wavelength 632.8 nm) diffracts when incident on a hair of thickness 0.040 mm. What is the angular width of the central diffraction maximum
Astronomers discover a binary star system that has a period of 93.0 days. The binary star system consists of two equal-mass stars, each with a mass twice that of the sun, that rotate like a dumbbell about the centre of mass at the midpoint between..
A small metal bead, labeled A, has a charge of 29nC . It is touched to metal bead B, initially neutral, so that the two beads share the 29nC charge, What is the charge qA and qB on the beads
A flat copper sheet has a hole with area 0.250m2at room temperature (25?C). what's the hole's new area
compute the diameter of the bright circular spot formed.
question1if argentinosaurus a long-necked gigantic sauropod had a head height of 19 m and a heart height of 7.9 m what
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