In addition to ash, what is produced when wood burns

a. oxygen and water vapor

b. oxygen and carbon dioxide

c. oxygen. carbon dioxide and water vapor

d. carbon dioxide and water vapor

The force you have to overcome to start an object moving is a. rolling friction b. static friction c. sliding friction d. air resistance

A sound changes from 25dB to 5 dB. How much louder does the 25 dB seem to us

Why do satellites not fall to the Earth?

All BUT one is a function of the cell wall. That is___ A) provides support B) provides protection C) transfers genetic materials D) regulates the passage of materials

Lexi is balancing equations. She is finding one equation to be very difficult to balance. Which explains how to balance the equation ZnSO4 + Li2CO3 → ZnCO3 + Li2SO4? A: One reactant and one product needs the coefficient 2.

A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5.

How does the density of the Earth's core compare to the other layers of the Earth? A) The core is the densest layer. B) The core is the least dense layer. C) The core is only less dense than the crust. D) The core is only less dense than the mantle.

Who wins a tug-of-war one who pushes harder at the ground or pulls harder at the rope

Describe an experiment to show that liquids expand and contract at different rates

Which of the following is equivalent to 10 kilograms? a) 1000 grams b) 100 hectogram c) 1 hectogram d) 1000 centigrams