An X-ray tube used for cancer therapy oper- ates at 8.8 MV with a beam current of 19 mA striking a metal target.

Calculate the power of this beam.

P = 8.8*10^6 * 19*10^-3 =

To calculate the power of the beam, you can use the formula:

Power (P) = Voltage (V) × Current (I)

In this case, the voltage is given as 8.8 MV (megavolts) and the current is given as 19 mA (milliamperes).

However, before performing the calculation, it is important to convert the units to match each other.

First, convert 8.8 MV to volts:
1 MV = 1,000,000 volts, so 8.8 MV = 8.8 × 1,000,000 volts = 8,800,000 volts.

Next, convert 19 mA to amperes:
1 mA = 0.001 amperes, so 19 mA = 19 × 0.001 amperes = 0.019 amperes.

Now we can calculate the power:
P = V × I
P = 8,800,000 volts × 0.019 amperes
P ≈ 167,200 watts

Therefore, the power of the beam is approximately 167,200 watts.