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lisov135 [29]
3 years ago
13

Aluminum foil has a shiny side and a dull side. Many experts believe that the shiny side of the aluminum foil should face the fo

od when you are using it to cover the food. What process would explain the reason why the shiny side should face the food?
A) conduction.
B) convection.
C) insulation.
D) radiation.
Physics
2 answers:
Goshia [24]3 years ago
5 0

Answer: D) Radiation.

Explanation: The shiny side of the aluminum foil is better at reflecting electromagnetic waves or radiation, so if this side faced the other side, it will prevent some radiated heat to reach the food, which is counterproductive.

When this side faces the food, it also prevents the heat radiated from the food to leave it, so it is actually beneficial.

So the correct answer of why this side should face the food is option D) Radiation

ra1l [238]3 years ago
3 0

Answer:

C

Explanation:

Insulation

Aluminum foil are really good at keeping the food warm because of its insulation property that it does not let the heat of food go out

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Because atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties
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which type of wave spreading do you think causes faster energy loss-two-dimensional or three-dimensional? explain.
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Three dimensional would loose faster 

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In a Young's double-slit experiment, 610-nm-wavelength light is sent through the slits. The intensity at an angle of 2.95° from
Sliva [168]

Answer:

spacing between the slits is 405.32043 ×10^{-9}  m

Explanation:

Given data

wavelength = 610 nm

angle = 2.95°

central bright fringe = 85%

to find out

spacing between the slits

solution

we know that spacing between slit is

I = 4I_{0} × cos²∅/2

so

I/4I_{0}  = cos²∅/2

here I/4I_{0} is 85 % = 0.85

so

0.85 = cos²∅/2

cos∅/2 = √0.85

∅ = 2 ×cos^{-1} 0.921954

∅  = 45.56°

∅  = 45.56° ×π/180 = 0.7949 rad

and we know that here

∅  = 2π d sinθ / wavelength

so

d = ∅× wavelength /  ( 2π  sinθ )

put all value

d = 0.795 × 610×10^{-9} / ( 2π  sin2.95 )

d = 405.32043 ×10^{-9}  m

spacing between the slits is 405.32043 ×10^{-9}  m

7 0
3 years ago
list 8 countries which have launched satellites into space and also list the name of the satellite which was launched by the cou
Alja [10]
Launch-capable countries
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1 Soviet Union Sputnik 1
2 United States Explorer 1
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4 Japan Ohsumi
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7 0
3 years ago
Which type of rays have a wavelength shorter than that of visible light?
aniked [119]

Answer:

c

Explanation:

wavelength shorter means energy is higher

the wavelength

radio waves>microwave>infrared rays>gamma rays

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