Arc seconds are _______________th of an arc minute
Fill in the blank(s) with correct word
1/60
Physics & Space Science
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What can be observed from Earth when a supernova explodes?
A. neutrons and neutrinos B. photons and neutrinos C. electrons and protons D. photons and neutrons
Physics & Space Science
Double the frequency of musical note and you double its
A) wavelength. B) speed. C) amplitude. D) all of the above E) none of the above
Physics & Space Science
Two charged particles, Q1 and Q2, are a distance r apart with Q2= 5Q1. Compare the forces they exert on one another when 
is the force Q2 exerts on Q1 and 
is the force Q1 exerts on Q2.
A.
.B.
.C.
.D.
.E.
.
Physics & Space Science
Light bends when it
A) passes a massive star. B) passes through a gravitational field. C) both of these D) neither of these
Physics & Space Science