The force of the floor pushing up on you to counter your weight is an example of a ________ force.
Fill in the blank(s) with the appropriate word(s).
normal
reaction
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A circuit consists of three identical lamps connected to a battery as in Figure OQ28.14. The battery has some internal resistance. The switch S, originally open, is closed. What happens to the potential difference across lamp A?
Which of these does NOT depend on a close binary system to occur?
A) a nova B) a Type I supernova C) a Type II supernova D) All of these need mass transfer to occur. E) None of these depend on mass transfer.
A compass registers ______________
Fill in the blank(s) with correct word
A series circuit consists of a 100 V DC power source, a 100 ? resistor, and a variable resistor of resistance R, which varies from 0 to 100 ?. The current in the circuit is
a.
directly proportional to R.
b.
inversely proportional to R.
c.
directly proportional to (100 ? + R).
d.
inversely proportional to (100 ? + R).
e.
neither directly nor inversely proportional to R or to (100 ? + R).