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3 years ago

Why can’t we see microwaves

Physics

1 answer:

motikmotik3 years ago

8 0

Answer:

The human retina can only detect incident light that falls in waves 400 to 720 nanometers long, so we can't see microwave or ultraviolet wavelengths. This also applies to infrared lights which has wavelengths longer than visible and shorter than microwaves, thus being invisible to the human eye.

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M+2-4=3 solve and get 50 pts

Katen [24]

Hey!

First, let's write the problem.
$M+2-4=3$
Subtract the numbers, we would do the following operation, $2-4=-2$
$M-2=3$
Add 2 to both sides.
$M-2+2=3+2$

This tells us that our final answer would be,
$M=5$

Thanks!
-TetraFish

3 0

3 years ago

Read 2 more answers

A parallel-plate capacitor is made from two aluminum-foil sheets, each 5.9 cm wide and 5.6 m long. Between the sheets is a Teflo

Zarrin [17]

Answer:

1.98 x 10⁻⁷ F

Explanation:

w = width of the sheet = 5.9 cm = 0.059 m

L = length of the sheet = 5.6 m

Area of the sheet is given as

A = L w = (5.6) (0.059) = 0.3304 m²

d = distance between the sheets = 3.1 x 10⁻⁵ m

k = dielectric constant of teflon = 2.1

Capacitance is given as

$C = \frac{k\epsilon _{o}A}{d}$

$C = \frac{(2.1)(8.85\times 10^{-12})(0.3304)}{3.1\times 10^{-5}}$

C = 1.98 x 10⁻⁷ F

5 0

3 years ago

Calculate the missing angles in the following diagram if the index of refraction is 1.00

defon

Glad you are coming back tomorrow I am so happy to be with you guys I will

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3 years ago

Misha Larkins [42]

Cells with similar preferences are arranged closer together in the auditory cortex. That statement presented is True. Auditory cortex is in the temporal lobe. It processes auditory information in human and as well as other invertebrates. The neurons inside the auditory cortex are organized depends on the frequency of the sound.

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3 years ago

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10. Which of the following is an acceleration? a. 12 m/s2 down b. 5 m/s up c. 8N West

nadya68 [22]

Answer:

a. 12 m/s² down

Explanation:

Acceleration has units of length per time squared. Acceleration is a vector, so it also has a direction.

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3 years ago