Physics, 01.12.2020 16:50 majestyic1207
If the eye receives an average intensity greater than 100W/m2, damage to the retina can occur. This quantity is called the damage threshold of the retina.
A. What is the largest average power (in mW) that a laser beam 1.44mm in diameter can have so that it can be considered safe to view head-on?
B. What is the maximum value of the electric field for the beam in part A?
C. What is the maximum value of the magnetic field for the beam in part A?
D. How much energy would the beam in part A deliver per second to the retina?
Answers: 2
Physics, 21.06.2019 19:00, goat46
Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope. describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.
Answers: 2
Physics, 22.06.2019 04:00, binodkharal2048
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
Answers: 2
Physics, 22.06.2019 06:30, angelinaranee15
Work = force × a. work b. energy c. distance d. momentum
Answers: 1
If the eye receives an average intensity greater than 100W/m2, damage to the retina can occur. This...
Mathematics, 18.10.2020 15:01
History, 18.10.2020 15:01
Chemistry, 18.10.2020 15:01