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A 700lbf prefabricated slab is being lifted up by a crane at a constant velocity. The crane pulls on the slab with a force of 4000N at an angle of 20o to the left of vertically upward. The only other force acting on the slab is the force of air resistance. What is the magnitude of the force of the air resistance? What is the direction of the force of the air resistance?
with the suspension point 30cm from the left edge of the meter stick hang a 200g mass 10cm from the left edge of the
a cannonball of mass 8.11 kg is shot from a cannon at an angle of 34.21deg relative to the horizontal and with an
a 60.0-kg person rides in an elevator while standing on a scale. the scale reads 400 n. what is the acceleration of the
A 90 kg (900 N) mountaineer uses a nylon rope that is 55 m long and 1.0 cm in diameter. 1. If the full weight of the mountaineer is held by the rope, what is the stress of the rope? 2. Is nylon strong enough to not rupture under that stress? 3. If th..
A 2.0 meter long pendulum is released from rest when the support string is at an angle of 25o. Evaluate the speed of the bob at bottom of the swing
A skier of mass 100 kg starts from rest and comes down a slope of constant angle 25 degrees with the horizon. What is the length of the slope
A current of 10.0 mA is maintained in a single circular loop with a circumferenceof 1.60 m. A magnetic fieldof0.550 T is directed parallel tothe plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?
the sketch shows a conical pendulum. the ball swings in a circular path because of the string attached at the top. the
Calculate the temperature of the air inside the balloon which will produce the required lift. Assume the outside air is an ideal gas at 0°C. What factors limit the maximum altitude attainable by this method for a given load
A radioactive atom at rest in the lab decays, sending two smaller nuclei in opposite direction. One fragment has a mass of 8.35 x 10-26 kg and moves at speed 0.770 c. what is its speed
A woman rides a carnival Ferris wheel at radius 16.00 m, completing 4.10 turns about its horizontal axis every minute. What are (a) period of the motion, and the magnitude of her centripetal acceleration at (b) highest point and (c) the lowest poi..
Consider a 2.5 GHz `clock' signal on a circuit board that has the following properties: It is constant at +4.00 V for 0.0073 ns, What is its rms voltage?
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