2. The substances that undergo change in a chemical reaction are called

O reactants

O elements

O coefficients

O products

A light bulb provides a resistance of 20 Ω to the 30 A current that runs through it. Determine the voltage of the battery in the flashlight. 0.7 V 2 V 51 V 600 V

Which food provides the body with energy in the form of carbohydrates

What sequence shows electromagnetic waves arranged from shorter to longer wavelengths? A. Visible light, infrared radiation, microwaves, and ultra violet rays B. infrared radiation, Visible light, ultra violet radiation, and microwaves C.

In science, the word light refers to what? a. visible light only b. visible light and infrared light c. visible light and ultraviolet light d. the entire electromagnetic spectrum

What is the relationship between the mass of the counterweight and the amount of work done on the projectile?

Why do people use Earth's motions to determine units of time?

Which of the following could be described as "Energy cannot be created or destroyed, only converted into other forms"? A. Rebound-crumple theorem B. Impulse-momentum theorem C. Law of conservation of energy D. Law of conservation of momentum

Which one of the following statements is true? 1. Burning coal contributes to sulfur aerosols in the stratosphere; these sulfur aerosols have moderated global warming. 2.

A diver on a diving board is undergoing simple harmonic motion. Her mass is 55.0 kg and the period of her motion is 0.800 s. The next diver is a male whose period of simple harmonic oscillation is 1.05 s.

Who was the last person to step on the moon?