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How ultrasonic waves are generated?
How velocity of ultrasonic waves are measured by interferometric method?
What are the different methods of recording and reproduction of sound waves ? how many kinds of microphone?
A mass hanging vertically from a spring oscillates with a period T. If this experiment were taken to the Moon, then how would the period of oscillation change? Explain. A pendulum of length L has a period T. How would the period change if the pendu..
A student wants to lose some weight. He knows that rigorous aerobic activity uses about 700 kcal/h (2900 kJ/h) and that it takes about 2000 kcal per day (8400 kJ) just to support necessary biological functions, at what rate will this student "burn"..
Water flows at 0.25L/s through a 11 meter long garden hose 2 centimeter in diameter that is lying flat on the ground. Find the gauge pressure of water where it enters the hose
A 4 kg box is raised from rest adistance of 6 m by a vertical force of110 N. Find the final kinetic energy of the box
A magnifier has a magnification of 8 times. How far from the lens should an object be placed so that its (virtual) image is at the near-point distance of 25 {rm cm}.
In the earth's atmosphere positive charges move toward the earth and negative charges moves away from it the total current is approximately 1800 Amp. Determine the resistivity of the air at the surface of the earth
A 92 kg man standing on a surface of negligible friction shoves a 73 g stone lying at his feet, giving it a velocity of 4.0 m/s. What velocity does the man acquire as a result.
The bucket starts from rest and falls for 4.2 s. What is the linear acceleration of the falling bucket? The acceleration of gravity is 9.8 m/s2. Answer in units of m/s2.
A plate carries a charge of -4.0 µC, while a rod carries a charge of +1.0 µC. How many electrons must be transferred from the plate to the rod
A pendulum of length 3.53 m with a bob of mass 5.50 kg is pulled aside until the bob makes an angle of 35.0° with the vertical. Find the speed of the bob as it passes through the lowest point in its swing
a transformer with 120 turns in its secondary supplies 12 volts at 220 ma to a toy train. the primary is connected
In gym class you run 22m horizontally, then climb a rope vertically for 6.2m. What is the direction angle of your total displacement
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