A car’s horn produces a constant frequency of 350 Hz as it passes by Suzy. What is the best estimate of the frequency Suzy hears after the car passes her?

The radius of an atom is closest in size to a

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings

Look at the electroscope, describe how you can cause the two leaves at the bottom to repel each other and stay that way