In the proton-proton cycle, you must first make deuterium, then helium
Indicate whether the statement is true or false
TRUE
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Impedance: If a 1.0-k? resistor is connected in series with a 20-mH inductor, what is the impedance at 1.0 kHz?
A. 0.13 k? B. 1.0 k? C. 1.1 k? D. 0.13 M?
Unseen objects in our galaxy have been found by the bending effect they have on more distant stars' light passing near them. These small objects that don't emit light are calculated to have masses of about 10× the mass of the Sun. Which is the best choice for these objects?
a. black hole b. neutron star c. white dwarf d. main-sequence stars
Which of the following lists the stages of life for a low-mass star in the correct order?
A) protostar, main-sequence star, red giant, planetary nebula, white dwarf B) protostar, main-sequence star, red giant, supernova, neutron star C) protostar, main-sequence star, planetary nebula, red giant D) main-sequence star, white dwarf, red giant, planetary nebula, protostar
The earliest evidence of prehistoric life is the single-celled organisms called ______________
Fill in the blank(s) with correct word