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A 0.60kg sphere rotates around a vertical shaft supported by 2 strings. If the tension in the upper string is 18N, calculate
a) the tension in the lower string
b) the rotation rate (in rev/min) of the system.
On her way to school, a child discovered that her coin is missing and there is a hole in her pocket. She turned back and walked 24m east along the sidewalk. find her average velocity while searching for the coin
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
A string is attached to a rigid support and the cylinder allowed to drop from rest. Find out the acceleration of the cylinder.
The first has a magnitude of 128 cm and makes an angle of 113 degrees with the positive x axis. The resultant displacement has a magnitude of 180 cm and is directed at an angle of 39 degrees to the positive x axis.
a child is born after 39 weeks in its mothers womb. if the childs birth mass is 3.5kg, how much mass on average does the fetus gain each day in the womb
The giant swing at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Find the time of one revolution of the swing if the rod supporting the seat makes an angle of 30 degrees with the vert..
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 6.8 m/s right before entering the wood. The mass of the nail is .06kg. what is the average force on the nail by the wood
Four charges Aq,Bq,Cq, and Dq (q = 5 x 10-07C) sit in a plane at the corners of a square whose sides have length d = 80.0 cm. A charge, Eq, is placed at the origin at the center of the square.
a small motor draws a current of 1.75 A from a 120.0 V line. It costs $35.81 to operate the motor for 4.00 hrs at $0.0600 /kWh. What is the power output of the motor
The volume of an ideal gas is adiabatically reduced from a volume of 200 L to a volume of 74.3 L. How many moles are in the gas
On a frozen pond, a 7 kg sled is given a kick that imparts to it an initial speed of v0 = 2.3 m/s. find the distance the sled moves before coming to rest
A projectile is fired from the edge of a 10m high cliff at 10m/s and an angle of 30 degrees from the horizontal. what is the magnitude of the final velocity
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