Look at the diagram showing the different wavelengths in sunlight.
A diagram showing the human eye and visible light. Visible light is broken down by color with wavelength in nanometers. Red is 700, orange is 600, yellow is 580, green is 550, blue is 475, indigo is 450, violet is 400.
Which statement describes electromagnetic waves with wavelengths greater than 700 nanometers?
They take the form of heat.
They can cause skin cancer and sunburn.
They are some of the shortest waves.
They can be seen by human eyes as visible light.
What do the arrows at point 3 indicate?
Cool air is above water.
Warm air is above land.
Warm air is cooling quickly.
Cool air is warming quickly.
Answers: 1
Physics, 21.06.2019 15:10
Consider the following problem: a box with an open top is to be constructed from a square piece of cardboard, 3 ft wide, by cutting out a square from each of the four corners and bending up the sides. find the largest volume that such a box can have.
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Physics, 21.06.2019 23:30
Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?
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Physics, 22.06.2019 12:10
Point charges q1 = 51 ยตc and q2 = โ27 ยตc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 ยตc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
Answers: 3
Look at the diagram showing the different wavelengths in sunlight.
A diagram showing the human eye...
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