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The buoy is made from two homogeneous cones each having radius r. Find the distance zc to the buoy's center of gravity G.
Given:
r = 1.5 ft
h = 1.2 ft
a = 4 ft
A gnat takes off from one end of a pencil and flies around erratically for 26.6 seconds before landing on the other end of the same pencil. find the gnat\'s average speed
An elastic cord is 69 cm long when a weight of 57 N hangs from it but is 70 cm long when the weight of 75 N hangs from it. What is the "spring" constant k of this elastic cord.
It has been argued that the United States' economy is shifting from a manufacturing base to a "knowledge economy". What is a knowledge economy? What changes will be necessary for the shift to a knowledge economy?
A solenoid of length 5.6 cm and diameter 0.88 cm is wound with 167 turns per cm. The current is decreasing at a rate of 37.4 A/s. What is the induced emf in one of the windings
A sled rests at the top of a 25° slope 80 m in length. If ?k =.25, and the velocity at the bottom of the incline is 20 m/s, what is the weight of the sled
Three pendulums with strings of the same length and bobs of the same mass are pulled out to angles q1, q2 and q3 correspondingly and released. The approximation sin q = q holds for all three angles, with q3 > q2 > q1. How do angular frequencies of th..
An injured monkey sits perched on a tree branch 9.0 m above the ground, while a wildlife veterinarian is kneeling down in the bushes 81.5 m away attempting to subdue the monkey with a tranquilizer gun. Given the angle above, what is minimum speed t..
A 3.00 kg block is released from rest at the elevated end A of a frictionless track that slopes down to a point B and continues horizontally to a point D, Find the work done on the block by the normal force exerted by the track
A bicycle wheel of radius 0.4 m is spinning at a rate of 45 revolutions per minute. What is the period of the wheel's motion? What is the centripetal acceleration of a point on the edge of the wheel?
q1. a worker stands still on a roof sloped at an angle of 40deg above the horizontal. he is prevented from slipping by
A man observes snow falling vertically when he is at rest, but whenhe runs through the falling snow at a speed of 6.80 m/s, it appears to be falling at an angle of28.0° relative to the vertical. Find the speed of the snow relative to the earth.
a car with mass of 200 g is carring a block of 150 g climbingan incline of 30 degrees. assume the car and the attached
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