The atomic number of an element is the number of protons the element has, so the element with the atomic number 55 has 55 protons.
I believe the answer is D. The milky way is a spiral galaxy, You can tell just by looking at it.
That was Tycho Brahe, and I thought it was actually more years than that.
The letter i is used to signify that a number is an imaginary number. It stand for the square root of negative one.
Due to the fact that for every action there is an equal reaction for every turn on the screw the screw will exert energy equal to the amount you gave
