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Take a hollow plastic ball (dia 3cm to 5cm) 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 (5mm 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 rock of mass 0.19 kg falls from restfrom a height of 12 m into a pail containing 0.30 kg of water. Therock and water have the same initial temperature. The specific heatcapacity of the rock is 1820 J/(kg·C°).
An air duct in a building has a radius of 11 centimeter and a length of 16 meter. Find what pressure is required to push air through the duct at a flow rate of1.4 m3/s
A 2.20 sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as heart beats. The reflected sound is after that mixed with the transmitted so..
A covex lens of focal length 10 cm placed 40 cm in front of aconcave lens of focal length 25 cm.A small object is placed 20 cmin front of the convex lens calculate the location of the finalimage relative to the second lens. Include a ray diagram
q1. a dielectric-filled parallel-plate capacitor has plate area 40.0cm2 plate separation 5.00mm and dielectric
You need to produce a solenoid that has an inductance of 3.05 ?H. How long, in centimeters, should the tube be
A wire with current of 4 A and length of 80 meter is positioned on a horizontal table with a rectangular top of dimensions 3 m by 4 m. How much is the magnetic force in Newtons on this segment of wire
Rhea, one of Saturn's moons, has a radius of 765 km andan acceleration due to gravity of 0.278 m/s2 at itssurface. Calculate its mass and average density
A worker stands still on a roof sloped at an angle of 36 degrees above the horizontal. He is prevented from slipping by a static frictional force of 390 N. Find the mass of the worker.
A uniform cylinder whose mass is 50 kg and radius is 0.20 m is mounted so that it turns without friction on its axis, which is fixed. What is the magnitude of the torque acting on the cylinder
A solenoid that has a length equal to 24.6 cm, a radius equal to 0.842 cm, Find the magnetic flux through the solenoid
An inductor, a capacitor, and a 64.0-? resistor are connected in series with an AC generator; the generator produces an RMS voltage of 90 V. what is the average power output of the generator
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