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A small bob with a mass of 250grams is suspended by an inelastic string of 0.5metres. The mass of the bob is made to rotate in a horizontal circle of radius 0.4 metres and whose center is vertically below the point of suspension. Find:
a) The magnitude of the component force and the tension acting on the bob
b) The period of the rotation of the bob
A boat heads directly across a river. Its speed relative to the water is 3 m/s. How fast is the boat going relative to the bank of the river
an insulated thermos contains 160 cm3 of hot coffee at 88.0degc. you put in a 14.0 g ice cube at its melting point to
During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms.
What type of device consists of a coil with a moveable iron core?
A pitcher claims he can throw a 0.159-kg baseball with as much momentum as a 3.30-g bullet moving with a speed of 1.50 103 m/s. What must the baseball's speed be if the pitcher's claim is valid
The Earth’s electric field creates a potential that increases 100 V for every meter of altitude. If an object of charge +4.5 mC and mass 68 g falls a distance of 1.0 m from rest under the influence of the Earth’s electric and gravitational fields, wh..
Two equal but oppositely-charged particles are placed 1.00 m away from each other. determine the charge on each particle
A 1.5m -long barbell has a 22kg weight on its left end and a 35kg weight on its right end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity
Assuming the residual nucleus is formed in its ground state, how much energy goes to the α particle?
A meterstick (L = 1 m) has a mass of m = 0.217 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. Where is the angular acceleration of the meterstick a maximum
My clothes washer spins the wash at a speed of 833rev/min to remove the water. The drum is 21.5 inches in diameter. What is the acceleration of the clothes at the drum
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
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