Final answer:
The power of the machine is calculated using the formula P = W/t, resulting in 50 watts.
Step-by-step explanation:
The power of a machine is defined as the rate at which work is done. It is calculated by dividing the amount of work by the time taken to do that work. Therefore, using the formula P = W/t, where P is power in watts (W), W is work in joules (J), and t is time in seconds (s), we can calculate the power of the machine.
Given that the machine does 1,500 joules of work in 30 seconds, we use the formula like this:
P = 1500 J / 30 s = 50 W
The power of the machine is 50 watts.