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Can you explain Doppler effect? Find a mathematical expression for the apparent frequency heard when the source is in motion and the listener is at rest and also give limitation of Doppler effect?
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Question: Somebody on reddit posted a ridiculous picture today of a fly pierced onto a needle of a cactus: Whilst the OP claims the picture to be real, several people doubted the fly could ever reach enough momentum to a ...
A mass m is projected vertically upwards at t = 0 from y = 0 with initial velocity v0 > 0 along the y-axis. (+y is upwards) The mass moves under the constant force of gravity, and also a force of air resistance with magn ...
Question: Three identical very dense masses of 5200kg each are placed on the xaxis. One mass is at x1 = -110cm , one is at the origin, and one is at x2 = 310cm . What is the magnitude of the net gravitational force Fgrav ...
Question: A point charge q1 = +2.40 μC is held stationary at the origin. A second point charge q2 = -4.30 μC moves from point a (x = 0.150 m, y =0) to point b (x = 0.250 m, y = 0.250 m). What is the electric potential ...
A system of four particles moves along one dimension. The center of mass of the system is at rest, and the particles do not interact with any objects outside of the system. Find the velocity, v4, of particle 4 at t1 = 2. ...
Question: A real image is four times as far from a lens as is the object. What is the object distance, measured in focal lengths? The response must be typed, single spaced, must be in times new roman font (size 12) and m ...
Question: A particle leaves the origin with an initial velocity v = (3.00 i hat) m/s and a constant acceleration a = (-3.00 i hat - 1.400 j hat) m/s2 (a) What is the velocity of the particle when it reaches its maximum x ...
Question: Point charges q1 = +2.00 (mu)C and q2 = -2.00 (mu)C are placed at adjacent corners of a square for which the length of each side is 1.00 cm. Point a is at the center of the square, and point b is at the empty c ...
Question: A proton is released from rest at the positive plate of a parallel-plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 50,000 m/s. What will be the final speed of an electro ...
Question: Planets beyond the solar system. On October 15, 2001, a planet was discovered orbiting around the star HD68988. Its orbital distance was measured to be 10.5 million kilometers from the center of the star, and i ...
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