Which Chemical Equation Is Balanced?

A) 2MG + O2 - > MgO

B) Mg + O2 - > 2MgO

C) 2Mg + O2 - > 2MgO

D) 2Mg + 2O - > 2MgO

Describe what happens to the electric field lines when two objects with unlike charges are brought near each other.

A 0.50-kg mass is placed on the end of a vertical spring that has a spring constant of 75 N/m and eased down into its equilibrium position. (a) Determine the change in spring (elastic) potential energy of the system.

What is the highest recorded wind speed of a tornado

1. Define friction. Name and describe two kinds of friction.

What can we say about a polarizing filter with vertically aligned chemical molecules? A It will allow vertically polarized light to pass through it. It will allow horizontally polarized light to pass through it. B. C. It will block unpolarized light.

Alleles are variations of genes. How are they expressed? A. repetitive or creative B. major or minor C. temporary or permanent D. dominant or recessive

Which statement about electric force is true?

The boundary between the crust and mantle is marked by a seismic-velocity discontinuity called

average distance of 160.0 cm. Its average time was 5.74 seconds. What is its average speed?

Tools used as nut crackers by chimps and birds