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Q. A particle undergoes two displacements, measured from positive x-axis, with counter-clockwise positive. The first has a magnitude of 11m and makes an angle of 73 degrees with the positive x axis. The resultant displacement has a magnitude of 6.6m directed at the angle of 137 degrees from the positive x axis.
How fast is the roller coaster moving at the top of the loop
After falling from rest from a height of 35 m, a 0.58-kg ball rebounds upward, reaching the height of 26 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on ball.
A 79, 37--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 ball of clay travelling horizontally at 2.6 hits and sticks to the extremely bottom tip of the rod.
Air is streaming horizontally past a small airplanes wings such that the speed is 50m/s over the top surface and 30 m/s past the bottom surface. the plane has a mass of 300 kg and a total wing area of 5 m^2(both wings).
Assume that plane continues to fly with the similar velocity
Giancoli, page 30 --when they say that x-xo increases with the square of the initial speed. Why do they say square of initial speed only, what about square of final speed? And why do they ignore that the distance also decreases by a factor of 2.
A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, plates are disconnected from the battery. define the behavior of the ball.
Evaluate the stability of of Na in the NaCl structure
at what range of speeds can a car safely make the curve.
Mary Healy, the young woman with severe vaginal bleeding, is admitted to emergency room. She is three months pregnant, and physician is concerned about the volume of the blood she is losing.
A 50-kilogram woman balances on one heel of a pair of high heel shoes. If the heel is circular with radius of .5 cm, what pressure does she exert on the floor.
Two charged spherical conductors are connected by a long conducting wire, and a charge of 15 μC is placed on the combina- tion. One sphere has a radius of 4.05cm and the other a radius of 6.05cm.
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