The helium flash is the cause of some supernovae
Indicate whether the statement is true or false
F
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The Hubble Law is a relation between a galaxy's
a. mass and its luminosity. b. distance and its luminosity. c. mass and its recession velocity. d. distance and its recession velocity. e. mass and its diameter.
Semiconductors: A simple junction transistor consists of three semiconductor sections consisting of
A. only pnp semiconductors. B. only npn semiconductors. C. either pnp or npn semiconductors. D. none of the given combinations.
Particle A has twice the charge of nearby particle B. Compared to the force on Particle A, the force on Particle B is
A) half as much. B) the same. C) twice as much. D) four times as much. E) none of the above
Why do we think Mercury contracted after it formed?
What will be an ideal response?