What force is responsible for the potential and kinetic energy of the pendulum?
mechanical
gravity
work
suspension

Which of these gives the best indication that a health service is based on pseudoscience?

In which way does nicotine cause addiction? by stimulating the brain’s pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

When a researcher debriefs her participants, she: provides a detailed explanation of the study. removes their undergarments. tells them they can stop taking part at any time. provides an detailed explanation of the study, and tells them they can stop taking part at any time.