The scientific method is a simple, mechanical way of grinding facts into understanding
a. True
b. False
Indicate whether the statement is true or false
False
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For which of these scenarios is the wave model of light more convenient to use?
A. refraction of light through a lens B. diffraction of light through a slit C. receiving radio transmissions D. the Doppler shift of light E. All of these choices are correct.
Diffraction occurs because
1.light must slow down to turn sharp corners, causing a phase difference; because of that phase difference, interference occurs. 2.light spreads out after passing an edge, such as the edges of a slit, causing interference. 3.the light from two monochromatic sources in phase with each other interfere. 4.edges, such as those on a penny, cause the light to behave as if there were twice as many sources, and those virtual sources interfere with each other.
The carbon in your body was formed in nuclear reactions in long-dead stars. How much energy was released when three 4He nuclei combined to make 12C? The mass of 4He is 4.002603 u, the mass of 12C is 12.0000 u, and 1 u = 931.494 MeV/c2
A) 7.274 MeV B) 3716 MeV C) 8.424 MeV D) 2.106 MeV
The vertical displacement y(x,t) of a horizontal string aligned along the x-axis is given by the equation y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 s-1)t]. What are the (a) speed and (b) amplitude of this wave?
What will be an ideal response?