How much work is required to lift 20kg object, 2m in the air? Show your work and explain your thinking.
Plz help I’m doing a test

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Avoltaic cell converts chemical energy to