One light year is ________ .
9.5 x 10^12 km
A light year, the distance light travels in one year, is approximately 9.46 x 10^12 km, commonly rounded to 9.5 x 10^12 km.
What special name is given to the frictional force exerted by a fluid?
______ is used in periscope.
Zero degree centigrade is equal to what degree Fahrenheit?
A. 100°F
B. 30°F
C. 34°F
D. 32°F
Keeping voltage constant, if more lamps are put into a series circuit, the overall current in the circuit:
A. Increases
B. Decreases
C. Remains the same
D. Becomes infinite
Excessive curvature of eye lens leads to _______