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Q1. Diffraction also occurs with sound waves. Consider 1900-Hz sound waves diffracted by a door that is 87 cm wide. What is the angle between the two first-order diffraction minima?
Q2. Two meteoroids are heading for earth. Their speed as they cross the moon's orbit is 2.3 km/s. The second meteoroid misses for earth by 2680 km. What is its speed at its closest point?
What was the average acceleration throughout the trip
What is water speed along the boat during the vertical cross
At a right angle to a magnetic field. The acceleration of gravity is 9.81 m/s2. What is strength of the magnetic field necessary to exactly balance the weight of the proton and keep it moving horizontally.
A uniform density cube of mass m, side 2b, and center at C is placed on a fixed horizontal cylinder of radius r and center O in Earth's gravitational field. The cube is originally put so that C is centered above O, but it can roll from side to side w..
Find out a magnitude and direction of the electric field
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer? Imagine the speed of sound in air to be 340 m/s.
A standardized biological microscope has an 8.0--focal-length objective. What focal-length eyepiece should be used to achieve a total magnification of.
What would be the radius of curvature of the cornea
What is the focal length of this mirror. If the object is 25 cm in front of the mirror, what is the image distance.
What is the amplitude of subsequent oscillations
What is voltage difference between floor and hover-board
What is new angular speed of the merry-go-round
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