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an electric motor lifts an elevator car at the constant speed of 2 ms the power consumed by the motor to perform this
a hoop a disk and a solid sphere each have mass of 14 kg and a diameter of 16cm starting from rest all three objects
a hard disk in your computer spins at 5400 rpm if this disk turns through 12 revolutions before coming to a stop find
a spy satellite was launched into a circular orbit with a height of 318 km above the surface of the earth determine its
a jet airplane flying over chyenne wyoming has an air speed of 260 ms in a direction 50 degrees south of west it is in
what is the magnitude of the free-fall acceleration of a ball mass m due to the earths gravity at an altitude of 7r
an unknown amount of current when passed through a resistance of r1 develops a voltage of 100 v and when passed
put a 220 lb man presses the brakes with a force of 28 lbsin2 to stop his car while traveling at a speed of 48 mihr if
two musicians are playing two pieces of the same instrument so that the sound produced by the first musician has a
the radius of a black hole is the distance from the black holes center at which the escape speed is the speed of lighta
a sphere of copper is subjected to 811 mpa of pressure the copper has a bulk modulus of 130 gpa by what fraction does
three point charges are placed on the x-axis a share of 333 micro c is at the origin a charge of -507 micro c is at
a small 450 brick is released from rest 300 above a horizontal seesaw on a fulcrum at its center as shown in the figure
when you see a traffic light turn red you apply the brakes until you come to a stop if your initial speed was 17 and
a rocket initially at rest on the ground accelerates straight upward from rest with constant acceleration 490 the
a rock is thrown vertically upward with a speed of 150ms from the roof of a building that is 700m above the ground
two stones are thrown vertically upward from the ground one with three times the initial speed of the other assume free
the driver of a 1740 car traveling on a horizontal road at 110 suddenly applies the brakes due to a slippery pavement
a ring of diameter 1100 cm is fixed in place and carries a charge of 500 microc uniformly spread over its
in chapter 10 in the textbook we saw that the achilles tendon will stretch and then rebound storing and returning
a typical ten-pound car wheel has a moment of inertia of about the wheel rotates about the axle at a constant angular
n 413 mol of hydrogen gas is initially at t 335 k temperature and pi 173times105 pa pressure the gas is then
an electron with kinetic energy140kev circles in a plane perpendicular to a uniform magnetic field the orbit radius
a convex mirror has a focal length of magnitude 652 cma if the image is virtual what is the object location for which
a 047 m long guitar string of cross-sectional area 10 10-6 m2 has youngs modulus y 190 109 nm2 by how much must you