(offering 20 points)
which of the following phrases best indicates that science is being used correctly in an advertisement?
a. "a survey of 20 people in downtown seattle . ."
b. "testing at an independent laboratory shows . ."
c. "our team of professionals agrees . ."
d. "our own extensive testing shows without a doubt . ."

How is the gravitational force related to the distance between two objects?

Avoltaic cell converts chemical energy to

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system