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a 40-m-long steel wire has a cross-sectional area of 0050cm2 its proportional limit has a value of 00016 times its
in the challenger deep of the marianas trench the depth of seawater is 109 km and the pressure is 116 x 108pa about 115
a projectile is lauched at some speed at an angle of 58 degrees and travels a range of 211 meters the launch angle is
in an amusement park ride called the roundup passengers stand inside a 180 m-diameter rotating ring after the ring has
moving in the x direction a particle carrying 10 m c experiences no force moving with speed v at 30deg to the x axis
a neutron in a nuclear reactor makes an elastic head-on collision with the nucleus of a carbon atom initially at resta
three forces acting on an object are given by force 1 15i 550j n force 2 485i 19j n and force 3 415i n the object
a skilled skier knows to jump upward before reaching a downward slope consider a jump in which the launch speed v0 125
find the change in the force of gravity between two planets when the distance between them is decreased by eight times
estimate the power radiated by a basketball at 20 deg c and a human body at 37 deg c use stefan-boltzmann
when a 200-kg object is hung vertically on a certain light spring described by hookes law the spring stretches 289 cma
an outfielder throws a 0150-kg baseball at a speed of 220 ms and an initial angle of 300deg what is the kinetic energy
a 183-kg object hangs in equilibrium at the end of a rope taken as massless while a wind pushes the object with a 651-n
a 15kg block is at the top of a smooth incline that is 20 degrees with respect to the horizontal and is 75 m in length
a piece of iron of volume 513 x 10-4 msup3 is supported by a string while submerged in water what is the tension in the
a person tries to heat up the bath water by adding 60 l of water at 70ordmc to 60 l of water at 30ordmc what is the
a train travels due south at 60 ms it reverses its direction and travels due north at 60 ms what is the change in
a jet airliner moving initially at 300 mih due east enters a region where the wind is blowing at 100 mih in a direction
a ball is tossed from an upper-story window of a building the ball is given an initial velocity of 890 ms at an angle
an astronaut on a strange planet finds that she can jump a maximum horizontal distance of 190 m if her initial speed is
in a local bar a customer slides an empty beer mug down the counter for a refill the bartender is momentarily
a hockey puck is hit on a frozen lake and starts moving with a speed of 132 ms five seconds later its speed is 610 msa
consider a planet of radius 578 106 m with a rotation period of 216 hours compute the radial acceleration of a point on
a tire 0300 m in radius rotates at a constant rate of 210 revminfind the speed of a small stone lodged in the tread of
the helicopter view in the figure below shows two people pulling on a stubborn mule assume that f1 is 130 n and f2 is