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Take a hollow plastic ball (dia 3 cm to 5 cm) using a needle. Pass a thread of about 105 cm along a diameter of the ball. Tie a knot at one end. Hang the ball from a rigid support so that the ball is free to oscillate. Make a small hole (5 mm dia) in the ball near the top. Fill it with sand and find its time period of oscillation. Empty the ball and fill it with steel balls/iron filings and repeat the experiment. Similarly carry out the experiment with common salt. Compare the time periods obtained in the above three cases. What do you find? Explain your finding.
A container is filled to a depth of 19.0 cm with water. On top of the water floats a 32.0-cm-thick layer of oil with specific gravity0.600
The blood from the aorta passes approximately to 32 arteries with 4mm inner diameter, calculate the speed of the blood in the arteries
What is the smallest number of whole logs (p = 725 kg/m3, radius = 0.0558 m, length = 3.20 m) that can be used to build a raft that will carry four people, each of whom has a mass of 90.0 kg
A man of mass 85.0kg is escaping a burning building using a rope that will break if the tension exceeds 700N. With what acceleration must he slide down the rope
Given three containers all the identical temperature, one filled with a gas of classical molecules, one with a fermions gas, Find which will have the lowest pressure
Assume the coefficient of static friction between the road and the tires on a car is 0.801 and the car has no negative lift. Find speed will put the car on the verge of sliding
experiment-Reflection and Refraction, What can you conclude about the relationship of θi and θr? Does this verify the law of reflection
To throw the discus, the thrower holds it with a fully outstretched arm. Starting from rest, he begins to turn with a constant angular acceleration, what will be the speed of the discus at release
How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 24.0cm in diameter to produce an electric field of 1200N/C just outside the surface of the sphere
Thermal windows that are advertized to prevent heat gain in the sumer are tinted, double paned with a vacuum between the panes, and may be slightly silvered. Explain using the concepts of heat trnsfer how these features prevent or slow down the trans..
A train slows down as it rounds a sharp horizontal turn, going from 84.0 km/h to 40.0 km/h in the 13.0 s that it takes to round the bend. Compute the acceleration at the moment the train speed
A mass of 150 g of hot coffee at 90.0 oC is poured into an insulated cup containing 220 g of ice initially at 0.0 oC. how much ice will remain
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