Question

A 1kw laser is focused down to 1 cm�� and runs for 10s. What is the energy delivered over time?

1) 10 kj
2) 1x10��� kj
3) 10000 kj
4) 1x10��� kj

Answer 1

The energy delivered by the 1 kW laser focused down to 1 cm² and running for 10s is 10 kJ.

Step-by-step explanation:

To calculate the energy delivered over time by the laser, you can use the formula for energy (E):

E = Power × Time

Since the laser has a power output of 1 kW and runs for 10 seconds, the energy delivered can be calculated as follows:

E = 1 kW × 10s = 10 kJ

Therefore, the correct answer is 1) 10 kJ.