Only A type stars show hydrogen lines in their spectra
Indicate whether the statement is true or false
FALSE
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A boy fires a spring-loaded Ping-Pong ball gun. Briefly compare the forces and impulses on the gun and the ball. Which has more momentum? Which moves faster?
What will be an ideal response?
A _____________ has a radius of about 10 km and is supported by the pressure associated with degenerate neutrons
a. black hole b. neutron star c. white dwarf d. supernova remnant e. red dwarf
Any reply to a detected SETI signal should
A) be decided upon by the group of scientists who first detected the signal B) be decided upon by the government of the country who first detected the signal C) be sent immediately as a signal is received D) represent a consensus of the Earth's population
If an object of mass 8 kg has a velocity of 7 m/s, what is its linear momentum?
a. 56 kg-m/s b. 1.1 kg-m/s c. 0.88 kg-m/s d. 15 kg-m/s e. cannot be determined