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Starting from rest, a 2.4x10-4 kg flea springs straightupward. While the flea is pushing off from the ground, the groundexerts an average upward force of 0.41 N on it. This force does1.7x10-4 J of work on the flea.
(a) What is the flea's speed when it leaves the ground?
(b) How far upward does the flea move while it ispushing off? Ignore both air resistance and the flea's weight.
The pressure inside a gas bottle at 23.4 °C is 4350 kPa. What will be the pressure inside the bottle
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A lens that has a focal length of 8.45 cm is used as a magnifying glass. (Take the near point of a normal eye to be 25 cm from the eye.) What is the angular magnification
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
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This time, william tell is shooting at an apple that hangs on a tree. the apple is a horizontal distance of 20.0m away and at a height of 4.00m above the ground. what is the arrow's inital velocity
A velocity selector has an electric field of magnitude 2620 N/C,directed vertically upward, and a horizontal magnetic field that isdirected south. Charged particles, traveling east at a speed of6.75 x 103 m/s, enter the velocity selector and are ab..
a 1.0-cm-thick layer of water stands on a horizontal slab of glass. light from within the glass is incident on the
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