In LASIK surgery, a laser is used to reshape the cornea of the eye to improve vision. The laser produces extremely short pulses of light, each containing 1.0 mJ of energy. Required:
a. In each pulse there are 9.7?1014 photons. What is the wavelength of the laser?
b. Each pulse lasts only 20 ns. What is the average power delivered to the eye during a pulse?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

The softest and hardest minerals are: softest hardest

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.