How many layers of material were the roads made of?

a. two

c. four

b. three

d. five

If y = 0.02 sin (20x - 400t) (SI units), the wave number is

What is matter that is composed of more than one substance

The seasons of the year result from Earth's movement, or around the Sun.

You are sitting in your car at rest at a traffic light with a bicyclist at rest next to you in the adjoining bicycle lane. As soon as the traffic light turns green, your car speeds up from rest to 47.0 mi/h with constant acceleration 8.

36 The height of a 30-story building is approximately (1) 10^0 m (3) 10^2 m (2) 10^1 m (4) 10^3 m

Last week you determined what wavelength of light works best for measuring p-nitrophenol in solution using a spectrophotometer. you then determined the extinction coefficient for p-nitrophenol in solution.

What three ways does the respiratory system modify air before it reaches the lungs?

Which factor listed below most likely results in the loss of genetic variation from small populations? Question 2 options: mutation migration genetic recombination genetic drift

How could you demonstrate that visible white light is composed of many different colours?

Tas watches as his uncle changes a flat tire on a car. His uncle raises the car using a machine called a jack. Each time his uncle pushes down on the jack handle, the car rises up.