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Explain the concepts of angular momentum and torque with reference to the rotational motion of a rigid body. Derive the relevant expressions and illustrate with solved examples.
A block of 8kg is being pushed to the left on a horizontal surface. If the block is pushed with a force of 50N, and increases its speed from 2 m/s at point A to 6 m/s at point B, what was the work done by friction
Three boys each of weight W (300 N) make a log raft with lashing together logs of diameter D (15 cm) and length L (1 m). How many logs will be needed to keep the three boys afloat? Take the relative density of wood to be 0.80.
A golfer takes two putts to get his ball into the hole once he is on the green. What displacement would have been needed to get the ball into the hole on the first putt
A 10 meter uniform beam of weight 100 Newton is supported by two ropes at the ends. If a 400 Newton person sits at 2 meter from the left end of the beam, evaluate what the tension in the right rope
How much of the rope must be pulled. Find the magnitude of the magnetic field at the point x = 0, y = 0.7 m, z = 0.
A thin film of oil is placed on a piece of glass. The oil has an index of refraction of 1.29 and the glass has an index of refraction of 1.56. how thick is the film
Assuming your skin temperature is 37.2°C and the temperature of your surroundings is 20.7°C, Decide the length of time required for you to radiate away the energy gained by eating a 281 Calorie ice cream cone. Let the emissivity of your skin be 0.915..
During exercise, a person gives off 150 Calories of heat in 22 minutes. How much water would this amount of energy evaporate
Aspherical volume charge distribution rv = ro [1 - (r2/b2)] existsin the region 0
a hollow charged conductor has a tiny hole cut into its surface. show that the electric field in the hole is where is
A walrus loses heat by conduction through its blubber at the rate of 110 W when immersed in -1.00°C water. What is the average thickness of its blubber
What is the minimum thickness of a nonreflecting film coating (n=1.30) on a glass lens (n=1.50) for wavelength 500 nm
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