A car starts from rest and after 7 seconds it is moving at 42 m/s. What is the car's average acceleration? A. 0.17 m/s2 B. 1.67 m/s2 C. 6 m/s2 D. 7 m/s2 E. none of the above

14) the formula k2s indicates that a) the potassium ion is twice the size of the sulfide ion b) sulfur and potassium form a covalent bond c) there are two potassium ions for each ion of sulfur d) there are two sulfur ions for each ion of potassium

Does the horizontal motion of the projectile depend on the vertical motion?

Oxygen has an atomic number of 8. What can you conclude from this fact?

At what speed do the relativistic formulas for length differ from classical values by 1.00 %? (this is a reasonable way to estimate when to do relativistic calculations rather than classical.)

The particles in the atom that account for most of the mass of the atom are protons and

Maintenance in NFPA 70E is intended for preserving or restoring the condition of electrical power systems equipment or devices for?. Electrical safety is directly tied to the? of electrical power systems equipment.

If the mass of the spacecraft were doubled, how much would the force of gravity would change?

Emotional abuse is less harmful than physical abuse. a. True b. False

A 21.6-kg cube made from aluminum is at its melting temperature of 660℃. If you were to add 8000 kJ worth of energy as heat, what percent of the block melts? You might need the following: α = 23.0 ✕ 10-6 K-1, β = 69.

What are all of types of radiation the sun produces?