Which of the following statements is/are true? check all that apply. check all that apply. power is the rate at which energy is transformed. a person is limited in the total work he or she can do by their power output. the si unit of power is the horsepower. the si unit of power is the watt. power is the rate at which work is done.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence