Author Question: Which of the following best represents the energy transformations in a coal-fired electric power ... (Read 92 times)

natalie2426 · **on:** Jul 29, 2018

Which of the following best represents the energy transformations in a coal-fired electric power plant?

A) chemical thermal kinetic electromagnetic
B) radiant kinetic electromagnetic thermal
C) electromagnetic thermal kinetic
D) gravitational kinetic electromagnetic
E) chemical kinetic thermal electromagnetic

Question 2

Radon has a 4-day half-life. Starting with 10 radon atoms, how many will remain after 4 days?

A) Precisely five.
B) Either four, or five, or six.
C) Precisely zero.
D) About 5, but this prediction is uncertain due to the inaccuracies of our measuring devices.
E) About 5, but this prediction is uncertain due to quantum uncertainties.