The work you do is 4 J
Indicate whether the statement is true or false
F
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The age of the Universe can be deduced from
A. Kepler's Third law. B. Hubble's law. C. Shapley's law. D. the Doppler shift law. E. the Inverse-square law.
The first step in the proton-proton chain produces an antielectron, or positron. What happens to the positron?
A) It slowly works its way to the Sun's surface, where it escapes into space. B) It rapidly escapes from the Sun, traveling into space at nearly the speed of light. C) It is rapidly converted to energy when it meets an ordinary electron, resulting in matter-antimatter annihilation. D) It quickly meets an ordinary electron, forming an electron-positron pair that remains stable. E) It joins with a nearby neutron to form a proton.
According to the Big Bang theory, atoms would have likely begun to form after approximately
A. 0.5 second. B. 10 billion years. C. 1 year. D. 400,000 years. E. 3 seconds.
In the context of the Doppler effect, which of the following is a difference between a blueshift and a redshift?
A) Unlike a redshift, a blueshift is caused by a velocity of recession. B) Unlike a blueshift, a redshift is based on the Hubble's law. C) Unlike a redshift, a blueshift is a shift toward shorter wavelengths. D) Unlike a blueshift, a redshift is based on a light source moving closer to an object.