A dynamite blast at a quarry launches a rock straight
A dynamite blast at a quarry launches a rock straight upward, and2.5 s later it is rising at a rate of 18 m/s. Assuming airresistance has no effect on the rock, calculate its speed(a) at launch and (b)5.3 s afterlaunch
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if 343times108 electrons flowthrough the ground wire to earth and the ground wire is thenremoved what is the net charge
which one of the following statements regarding fluids is falsea an ideal fluid has a constant densityb for horizontal
an ideal gas is enclosed in a cylinder that has a moveable pistonon top the piston has a mass of 4500 g and an area of
the body of a person of mass 900 kg contains 0020 m3 of fat thedensity of human body fat is 980 kgm3 what percentage of
a dynamite blast at a quarry launches a rock straight upward and25 s later it is rising at a rate of 18 ms assuming
a 61 kg boy and a 42 kg girl use an elastic rope while engagedin a tug-a-war on a frictionless icy surface if
when a 200 n bag of nails hangs motionless from a single vertical strand of rope how much tension is exerted in the
an ideal gas is enclosed in a cylinder that has a moveable pistonon top the piston has a mass of 3900 gand an area of
two charges are placed on the x axis one of thecharges q1 589c is at x1 300 cm and the otherq2 -270c is at x2 900
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