Select the correct answer. Which statement best explains the movement of electric current from the clouds
A. The ground and the clouds are both negatively charged.
B.
The ground and the clouds are both positively charged.
The ground is positively charged and the clouds are negatively charge
D.
The ground is negatively charged and the clouds are neutral.
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The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill? 91.5 m 79.2 m 80.0 m 68.5 m

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

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