Physics, 06.05.2020 06:03, aurorasweetpea610
Damage caused to human eyes by laser light is dependent on the frequency of the laser, as well as the exposure time. For red laser light, a typical value for the amount of energy per square meter that would cause damge is 10J/m2. How long could someone stare directly at this supermarket checkout laser before damage occurs
Answers: 2
Physics, 21.06.2019 17:00, ijohnh14
Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.
Answers: 2
Physics, 22.06.2019 02:00, Kyliehayden05
Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.
Answers: 2
Physics, 22.06.2019 22:00, steven2996
Aspaceship starting from a resting position accelerates at a constant rate of 9.8 meters per second per second. how far will the spaceship travel if its final speed is 1 percent the speed of light (300,000,000 m/s)? a. 3.1 × 106 m b. 2.94 × 108 m c. 7.8 × 1010 m d. 4.6 × 1013 m
Answers: 1
Physics, 23.06.2019 00:30, janeou17xn
What os the equation of the line described below written in slope-intercept form? the line passing through point (0,0) and parallel to the line whose equation is 3x+2y-6=0
Answers: 3
Damage caused to human eyes by laser light is dependent on the frequency of the laser, as well as th...
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