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an athlete catches a ball traveling at 20 ms with her hands between the time she makes contact with the ball and the
a certain projectile is launched with an initial speed v0 at its highest point its speed is v06 what was the launch
a mining cart is pulled up a hill at 20 kmh and then pulled back down the hill at 33 kmh through its original level the
a 274 kg block initially at rest is pulled to the right along a horizontal surface by a constant horizontal force of
a planet with a radius of 600 x 107 m has a gravitational field of magnitude 300 ms2 at the surface what is the escape
by landing properly and on soft ground and by being lucky humans have survived falls from airplanes when for example a
you are on the moon and would like to send a probe into space so that it does not fall back to the surface of the moon
a 40 kg particle starts from rest at x 0 and moves under the influence of a single force fx 6 4x - 3x2 where fx is
bowling balls can be made from a variety of substances and are required to have a circumference of roughly 276 inches
a 0359-kg mass is attached to a horizontal spring with k 108 nm the mass slides across a frictionless surface the
an extension cord is used with an electric weed trimmer that has a resistance of 183 the extension cord is made of
in the drawing the weight of the block on the table is 380 n and that of the hanging block is 175 n ignore all
the electric potential immediately outside a charged conducting sphere is 180 v and 100 cm farther from the center of
a village maintains a large tank with an open top containing water for emergencies the water can drain from the tank
an infinitely long line of charge has a linear charge density of 450times1012 cm a proton is at distance 180 from the
a plane flies 450 km east from city a to city b in 450 min and then 900 km south from city b to city c in 150 h assume
an elevator has mass 540 not including passengers the elevator is designed to ascend at constant speed a vertical
a 69 kg short track ice skater is racing at a speed of 11 ms when he falls down and slides across the ice into a padded
a ball traveling in a circle with a constant speed of 3 ms has a centripetal acceleration of 4 ms2 what is the radius
in a heart pacemaker a pulse is delivered to the heart 81 times per minute the capacitor that controls this pulsing
the acceleration of gravity at the surface of the moon is approximately 16 that at the surface of the earth 98 ms2 what
a defibrillator is used during a heart attack to restore the heart to its normal beating pattern a defibrillator passes
two 330 kg 733 lb masses are separated by a distance of 4 m using newtons law of gravitation find the magnitude of the
the time separating high tides is 12 hours and 25 minutes assume that the high tide occurs at 330 pm one afternoona at
a certain laboratory experiment requires an aluminum wire of length of 220 m and a resistance of 240 at 200degc what