If three identical bulbs are connected in parallel across a 12V battery, the voltage across each bulb will be
a. 12V
b. 4V
c. different
d. none of the above
A
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Why is Supernova 1987A particularly important to astronomers?
A) It occurred only a few dozen light-years from Earth. B) It provided the first evidence that neutron stars exist. C) It was the first supernova detected in nearly 400 years. D) It provided the first observational evidence that supernovae actually occur. E) It was the nearest supernova detected in nearly 400 years.
Draw the structural formula for glycerol
Our Moon:
was formed by the collision of Earth with a Mars-sized protoplanet. was a separate small planet before it was captured by Earth's gravity. is 93 million miles away from Earth. is 4.3 light years away from Earth. has a composition similar to Earth's core.
Two closely spaced parallel glass plates are separated by 900 nm. What wavelength light source in the visible region (390 nm to 710 nm) will experience maximum transmission through the two plates?
a. 684 nm c. 500 nm b. 600 nm d. 429 nm