The neutral hydrogen atom consists of
a. one proton and one neutron.
b. one proton.
c. one proton, one neutron, and one electron.
d. one proton and one electron.
e. an isotope and an ion.
Question 2
A dime is 1.8 cm in diameter. Earth's Moon is 3.844 1010 cm from Earth and has a diameter of 3.76 108 cm. At what distance from your eye would you have to hold a dime so that it has the same angular diameter as the full Moon?
a. 200 cm
b. 2 cm
c. 0.2 cm
d. 2 AU
e. 2 LY