When people use plastic combs on their hair, the combs become negatively charged. Which statements about this situation are true

Which of the following is correct name for AlI3 Question 10 options: aluminum iodide aluminum trioxide aluminum dioxide none of the above.

Because of the structure of the electron cloud, as particles were radiated onto a gold atom, what was observed during Rutherford's experiment? a. Electron cloud absorbed the particles b. Particles that struck the nucleus went straight c.

Which of the following causes an object to move in a curved path? A. centripetal force B. friction C. the object's mass D. the object's weight

Which circuits are parallel

What did Benjamin Thompson contribute to science? A. P (↓1) V (↓1) = P (↓2) V (↓2) B. V (↓1) / T (↓1) = V (↓2) / T (↓2) C. the idea of heat energy D. the Kinetic Theory of Matter?

A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 4.1rev/s.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4