When is the sun's right ascension (ra) 6 hours?
a. fall equinox
b. winter solstice
c. vernal equinox
d. summer solstice

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.