A bat is using echolocation in a cave that is 15.5 degrees Celsius. a. What is the speed of sound in the cave?
b. If one of the cave walls was 25m away from the bat, how long would it take for the sound’s echo to return to the bat?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air