A photon has 8.0 x 10-15 J of energy. Planck's constant is 6.63 x 10-34 Jos.
What is the frequency of the photon?
O 1.21 % 1019 Hz
O 8.3 10-20 Hz
1.21 10-19 Hz
08.3 1020 Hz
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What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which kind of electrical charge is found on a hydrogen atom of a polar water molecule

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