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a 119 kg fullback runs at the line of scrimmagea find the constant force that must be exerted on him to bring him to
a gymnast falls from the high bar and lands on a 10 cm thick gymnastics mat the gymnast strikes the back of his head
a brass rod 250 cm long and 1 cm in diameter is welded end to end to a copper rod 250 cm long and 050 cm in diameter if
to test the impact performance of a 10 cm thick gymnastics mat a 20 kg cylindrical mass is dropped onto the mat from a
a a 111 kg mass is at the center of a uniform spherical shell of mass 109 1020 kg and radius 107 106 m find the
a monatomic ideal gas expands from 100 m3 to 25 m3 at a constant pressure of 25 x 105 pa find the change in internal
a student holds a tuning fork oscillating at 256 hz he walks toward a wall at a constant speed of 120 msa what beat
a 14 kg block slides on a plane inclined at 37 degrees to the horizontal axis the coefficient of friction between the
the number of radioactive nuclei present at the state of an experiment is 278e15 the number present twenty days later
an automobile is sliding down an icy road which is inclined at a 15 degree angle the mass of the car is 1500 kg assume
water 1000 kgm3 is flowing smoothly through a pipe of diameter of 50 cm at a speed of 025 ms the pipe bends upward
there is a region with a constant magnetic field 52t the magnetic field is directed out of the page a conducting rod
suppose a projectile is to be fired from the floor onto a table 11 meters high that stands 92 centimeters from the
a 100 kg block of ice at 0 c and 100 atm melts completely to water at 0c calculate the change of the etrophy of the ice
a 45- kg box of books is pulled up a 366- m-long inclined plank to a height of 14 m a force of 221 n parallel to the
a refrigerator does 180 kj of work while moving 115kj of thermal energy from inside the refrigerator what is its
two adjacent natural frequencies of an organ pipe are found to be 840 hz and 910 hza calculate the fundamental
the suns intensity at the distance of the earth is 1370 wm2 30 of this energy is reflected by water and clouds 70 is
a spacecraft orbits an unknown planet at a distance of 52 x 107 m from its center the period of its orbit is 52 hours
a cubical box 20cm on a side is constructed from 15cm -thick concrete panels a 100 w lightbulb is sealed inside the
22g of nitrogen gas at stp are pressurized in an isochoric process to a pressure of 30atm a what is the final
a find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to three times the
a person runs 30 miles to the northwest 45 degrees with respect to the we line then 35 miles south what is the persons
a 1037 kg satellite orbits the earth at a constant altitude of 108 km how much energy must be added to the system to
a how much work is done by the moons gravitational field as a 900 kg meteor comes in from outer space and impacts on