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A specific Sonar application ( used for underwater) has a frequency of 10,000 Hz. Using the speed of sound in water = 1500 m/s,
1. Calculate the wavelength of this sonar wave.
2. If a reflected sonar wave changes its frequency to 5,000 Hz, what is the wavelength of this reflected wave?
A lens placed at the origin with its axis pointing all along the x axis produces a real inverted image at x=-24cm that is twice as tall as the object. What is an image distance.
Suppose the diameter of a basketball is d = 9inch, the size of a basketball rim D = 18 inches. A player is making a three point shot at L =10 meters away from the rim. Assume he release the ball at the highest point in a jump when his hands are at th..
What volume is occupied by 1 mole of an ideal gas at a pressure of 1.00 atm and a temperature of 0 degrees Celsius
A Young's interference experiment is per- formed with blue-green argon laser light. The separation between the slits is 0.434 mm, What is the wavelength of argon laser light
A hot-air balloon is rising straight up with a speed of 1.95 m/s. A ballast bag is released from rest relative to the balloon when it is 4.08 m above the ground. How much time elapses before the ballast bag hits the ground
A 0.16 gram spider hangs from the middle of the first thread of its future web. The thread makes an angle of 7.2o with the horizontal on both sides of the spider. Estimate what is the tension in the thread
A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air through a 1.60 cm thick flat piece of crown glass and back to air again. The beam strikes the glass at a 35.0° incident angle.
The magnetic flux through a circuit is reduced from 35 Tm^2 to 5 Tm^2 in 0.1s. The current induced in the circuit is 3.6 mA. What is the resistance to the circuit
calculate the frictional force needed for a 900 kg car traveling around a 500 m radius curve at 25 ms if the car is to
Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.70 kg. The mass of the hanging block is m= 2.90 kg. Find the direction of the hanging blo..
When the book has come to rest, how does the decrease in mechanical energy of the book-Earth system compare with that when the book slid over the horizontal surface
A 1.83-kg solid sphere (radius = 0.141 m) is released from rest at the top of a ramp and allowed to roll without slipping. What is its rotational kinetic energy
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