Which option below correctly compares the amount of radiation exposure from an annual dental X-ray and the radiation exposure from background radiation during the same year?

A. The dose from the dental X-ray is 8000 times smaller than the
average annual dose of background radiation.
B. The dose from the dental X-ray is 8000 times larger than the
average annual dose of background radiation.
C. The dose from the dental X-ray is 20 times larger than the average
annual dose of background radiation.
D. The dose from the dental X-ray is 20 times smaller than the
average annual dose of background radiation.

Will a heavier bowling ball hit pins better than a lighter bsll

1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev

Observations show that interstellar clouds can have almost any shape and