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The drawing shows a skateboarder moving at 5 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is0.46 m above the ground. When she leavesthe track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
a hockey puck of mass m and radius r slides across frictionless ice. it has translational speed v to the right and
An unfortunate subject receives doses of the following types of radiation: ? rays (20 mrad, RBE=1), electrons (45 mrad, RBE=1), What is the total biologically equivalent dose received
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 6.50m above the base of the hill. At what rate was it rotating at the base of the hill
At a certain location, the Earth's magnetic field has a magnitude of 5.5.*10^-5 T and points in a direction that is 76 degrees below the horizontal. Find the magnitude of the magnetic flux through the top of a desk at this location that measures 140c..
A thermodynamic system is taken from state A to state B tostate C, and then back to A. What is the net work done by the system as it moves once through the cycle ABCA
what is the center of gravity? how can you find it in various objects? how dooes it effect the equilibrium of an
What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 37.9 cm
Suppose you want to run some apparatus that is 85 from an electric outlet. What voltage will be applied to your apparatus
An asteroid of mass 2.3×10^5kg , traveling at a speed of 21km/s relative to the Earth, hits the Earth at the equator tangentially, estimate the percent change in the angular speed of the Earth
The force required to stretch a Hooke's-law spring varies from 0 N to 76.4 N as we stretch the spring by moving one end 14.6 cm from its unstressed position. Find the work done in stretching the spring
A ball is thrown from the window of a high-rise building with an initial velocity of 5.1 m/s at an angle of 22 deg. below the horizontal. Find the height from which the ball was thrown
What is the charge on each
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