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one of isaac newtons insights was that the earths gravity extended well beyond its surface even as far as the moon in
if the tension in a guitar string is increased by 20 by what percentage does the wave speed
the pressure inside a gas bottle at 247 degc is 3830 kpa what will be the pressure inside the bottle if 286 percent of
a block of wood of mass m1 1 kg slides to the right on a frictionless horizontal table with a speed of 30 ms it
when jumping straight down you can be seriously injured if you land stiff-legged one way to avoid injury is to bend
suppose that a 1800 kg car passes over a bump in a roadway that follows the arc of a circle of radius 208 ma what force
a golfer hits a golf ball of mass 0045kg the ball over some short trees he hits the ball at an angle of 60 degreed to
a playground merry-go-round of radius r 120 m has a moment of inertia i 260 kg middot m2 and is rotating at 80 revmin
a speedboat starts from rest and accelerates at 201 ms2 for 740 s at the end of this time the boat continues for an
a 45-kg crate slides to the left initially at a speed of 52 ms a rope pulls on it with a tension of 240 n in a
a box is sliding across a board that make an angle of 15 degrees with the horizontal the box is sliding down the
the orbit of a moon about its planet is approximately circular with a mean radius of 487 times 10 8 m it takes 263 days
a rod is 240 m long and has a diameter of 250 mm a force of 2000 n is applied to the end to stretch the rod by 140 mm
a force of 100 n is applied to a wire with an un-stretched length of 400 m and a diameter of 500 mm if the wire changed
an incompressible fluid is flowing through a horizontal pipe with a constriction the velocity of the fluid in the wide
a bug 2 grams crawls from the center to the edge of a disk that is freely turning at 20 rpm the disk has a mass of 11
find the minimum diameter of an l 189 m long brass wire that will stretch no more than 938 mm when a mass of 312 kg is
a bowling ball which can be treated as a solid sphere with a diameter of 216 cm and a weight of 33 kg rolls down a
a 0500 kg stone is moving in a vertical circular path attached to a string that is 750 cm long the stone is moving
a 55 ohm resistor a 113 ohm resistor and a 11 ohm resistor are connected in series with a 36 v battery1 calculate the
a cannon fires a 2-kg exploding projectile across a level field on a windless day the projectile leaves the cannon at a
an open organ pipe has its fundamental frequency at 320 hz the first overtone of a closed organ pipe has the same
a note of frequency 700 hz has an intensity of 50e-06 wm2 what is the amplitude in meters of the air vibrations caused
if a violin string is tuned to a certain note by how many times must the tension in the string be increased if it is to
a sound wave of frequency 1840 hz propagating through air at 0 degrees celsius has a pressure amplitude of 150 pa what