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Find the speed at which Superman (mass=83.0 kg) mustfly into a train (mass = 16756 kg) traveling at 100.0 km/hr to stopit. Running into the train at thatspeed would severely damage both train and passengers. Calculate the minimum time Superman must take to stop the train, if thepassengers experience an average horizontal force of 0.570 theirown weight.
How far does the train thentravel while being slowed to a stop?
Two stretched cables both experience the same stress. The first cable has a radius of 3.63 multiply.gif 10-3 m, Determine the stretching force acting on the second cable
consider a rigid dumbell with two masses each of mass m spaced a distance d apart. as a reminder the momentum of
an apparatus that liquefies helium is in a room maintained at 306 k. if the helium in the apparatus is at 4.0 k what is
a mixing beater consists of three thin rods each 10.0 cm long. the rods diverge from a central hub separated from each
A 7.28-%u03A9 resistor is connected across a 9.00-V battery. The voltage between the terminals of the battery is observed to be only 7.27 V. obtain the internal resistance of the battery
In a series R-L-C circuit, the phase angle is 40.5?, with the source voltage leading the current, Find the reactance of the inductor
A meter stick is balanced horizontally on a pivot attached at the 50-cm mark. A 300-gram mass is attached to the right half of the meter stick 30 cm from the pivot point and it swings down. You wish to rebalance the meter stick horizontally with a 45..
Scientists have recently shown that a sample of cocaine can be traced to its country of origin by measuring the ration of carbon-13 to nitrogen-15 (both naturally occuring, stable nuclides) in the cocaine sample.
A 5mm tall object is placed in front of a thin lens of focal length 4cm. what is the distance of the object from the lens
The gravitational force exerted on a baseball is 2.14 N down. Through what distance does it move before its release
The graph of two cars that collide shows that they intersect at a point 5.5m on a distance/time graph. The first car has a velocity of 0.39m/s. How do the two sets of values compare
in a television set electrons are accelerated from rest through a potential difference of 15 kv. the electrons then
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