Explain this statement: Cells are the basic unit of structure and function in organisms.

Which of the following is a dark sticky substance that is found in tobacco? a. tar b. nicotine c. nitrogen d. carbon monoxide

Given a selection of ionizing particles at the same energy, which is biologically most harmful? Select one: a. alpha particles (helium nuclei) b. X-rays c. Beta particles (electrons) d. protons e. slow neutrons

Which is the best example of translational motion? a. An ice skater spinning in place b. A soccer ball passed between two players c. Water molecules in a glass of water d. A powered up rocket on a launch pad

What three tests must all theories pass to be considered a proven theory?

Explain why adding more components in parallel will decrease the total resistance of the total resistance of the circuit

In what sense are telescopes like time machines?

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

A satellite has a mass of 6124 kg and is in a circular orbit 4.64 * 105 m above the surface of a planet. the period of the orbit is 1.7 hours. the radius of the planet is 4.42 * 106 m.

A weightlifter Lifes a 100 kg barbell from the floor to a height of 2.00 m in 1.50 seconds. find the power he generates (use G=10 N/KG)

Use 3rd law to explain how a fish swims through water. Identify the force pairs and draw a diagram.