Only four nuclides having an ______________ number of protons and an ______________ number of neutrons are stable
Fill in the blank(s) with correct word
odd; odd
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The reason that small planets tend to lose interior heat faster than larger planets is essentially the same as the reason that
A) a large baked potato takes longer to cool than a small baked potato. B) gas bubbles form and rise upward in boiling water. C) Earth contains more metal than the Moon. D) thunderstorms tend to form on hot summer days.
Which of the following statements about light focusing is not true?
A) In a healthy eye, light is focused on the retina. B) Film should be placed at the focal plane in a camera. C) If you try to look at an image that is not formed at the focal plane, it will be blurry. D) The focal plane of a reflecting telescope is always located within a few inches of the primary mirror. E) Light can be focused with a lens or a mirror.
When observing an object, such as a space ship that is moving very quickly relative to you, the length of objects on that object will appear to be:
A) longer than when they are at rest. B) the same length as when they are at rest. C) shorter than when they are at rest. D) narrower than when they are at rest. E) wider than when they are at rest.
What do we mean by inflation?
A) the rapid expansion of the universe, driven by white dwarf supernova, that we still observe today B) the expansion of universe starting with the instant after the Big Bang C) the sudden release of photons when particles and antiparticles annihilate each other D) a sudden expansion of the universe driven by the energy released when the strong and electroweak forces froze out from the GUT force E) the photons released when electrons and protons first combined, forming the Cosmic Microwave Background Radiation