X-rays with a wavelength of 0.00100 nm are scattered by free electrons at 130°. What is the kinetic energy of each recoil electron?
What will be an ideal response?
248 keV
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A 10 solar mass main sequence star will produce which of the following remnants?
A) black hole B) white dwarf C) neutron star D) none of the above
What is released from the proton-proton chain and is immediately absorbed by the surrounding gas, thereby heating it?
a. positrons b. gamma rays c. deuterium d. electron motion e. neutrinos
Which of the following objects does not produce a spectrum that is a close approximation to a thermal radiation spectrum?
A) a hot, transparent gas B) a star C) a filament in an ordinary (incandescent) light bulb D) you E) a planet
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. (a) What is the maximum speed of the needle? (b) What is the maximum acceleration of the needle?
What will be an ideal response?