Final answer:
The power of the radio that used 900J of energy over 1500 seconds is 0.6 watts, calculated by dividing the energy by the time. The correct answer is A. 0.6 W.
Step-by-step explanation:
To find the power rating of the radio, we need to divide the total energy consumed by the total time the radio was running. Power (P) is the rate at which energy is used, and it can be calculated using the formula:
P = E / t
where E is the energy in joules (J) and t is the time in seconds (radioseconds). In this case, the battery uses 900 J of energy to run the radio for 1500 radioseconds, so we can calculate the power of the radio as follows:
P = 900 J / 1500 s = 0.6 W
The correct answer to the question, "A battery uses 900J of energy to run a radio for 1500 seconds. What is the watts of the radio?" is A. 0.6 W.