You are a running in a race. what is one feedback mechanism that happens as you increase exercise and muscle activity? a) leg cramps b) longer steps c) increased heart rate d) decrease in body temperature

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy