What is the energy of an electromagnetic wave that has a frequency of 5.0×10^5 Hz? A. 3.3 × 10^-28 J
B. 1.3 × 10^-39 J
C. 3.3 × 10^28 J
D. 1.3 × 10^39 J

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material

Which system of units is used by only a small number of countries in the world, including the u.s.