What form of energy does the swinging pendulum represent? Mechanical energy

Radiant energy

Chemical energy

Electrical energy
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At which position is the potential energy of the pendulum the greatest?
Position C

Position A

Position B

Position D

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.