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ddd [48]
3 years ago
13

What are examples of devices that use electromagnetic waves

Physics
1 answer:
Katena32 [7]3 years ago
5 0
Radio waves, microwaves, visible light and X Rays.
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Suppose you have a scarf that appears red when you are outside on a sunny day. Will the scarf appear red if you view it under di
Radda [10]

Answer:

no

actually no one weres the scarf in sunny ʕ•ε•ʔ

Explanation:

The colours we see are the wavelengths that are reflected or transmitted. For example, a red shirt looks red because the dye molecules in the fabric have absorbed the wavelengths of light from

3 0
3 years ago
I need help ASAP <br><br> 65 points
loris [4]
I believe the answer is heat.
7 0
3 years ago
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class 7 Physics answera plot measuring 2 km in length and 1 by 2 km in breadth has area of how many hectare ​
motikmotik

Answer:

Area of plot in hectare = 100 hectare

Explanation:

Given;

Length of plot = 2 km

Width of plot = 1/2 km = 0.5 km

Find:

Area of plot in hectare

Computation:

Area of plot = Length x width

Area of plot = 2 x 0.5

Area of plot = 1 square kilometer

1 square kilometer = 100 hectare

Area of plot in hectare = 1 x 100

Area of plot in hectare = 100 hectare

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3 years ago
Calculate the displacement of the volleyball in sample problem 2f when teh volleyballs final velocity is 1.1 m/s upward
stich3 [128]
We have: v i (initial velocity) = 6 m/sv = 1.1 m/sa = - 9.8 m/s²v = v i + a · t1.1 m/s = 6 m/s - 9.8 m/s² t9.8 t = 6 - 1.19.8 t = 4.9t = 4.9 : 9.8t = 0.5 sThen the replacement:x = xi + vi · t + a t² / 2( xi = 0 )x = 6 · 0.5 - 9.8 · 0.25 / 2x = 3 - 1.225Answer:
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4 0
4 years ago
750 million years ago, there was enough Uranium-235 present in Oklo, Gabon to have a natural fission reactor occur and generate
Komok [63]
<span>With a half-life of 700 million years, U-235 would have had twice as much mass at a time 700 MYA. This would have put the mass at 100kg at that time. Going back another 50 million years would be (50/700) or 1/14 of the half-life, or (1/2 * 1/14), or 1/28 of the total mass. 1/28 of 100kg is 3.57kg, so the amount present at the 750MYA mark would be approximately 103.57kg of U-235.</span>
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4 years ago
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