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svetlana [45]
4 years ago
13

What are similarities and differences of reflection, refraction, diffraction and absorption?

Physics
1 answer:
azamat4 years ago
7 0
They all deal with light and color,but they all do different things
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Scarcity exists because there are limited resources to meet unlimited wants and needs. true or false.
Sedbober [7]
The answer is true. scarcity exists because the resources are being depleted to meet the increasing demands of the people
6 0
3 years ago
Read 2 more answers
Is electrical conductivity?
expeople1 [14]

Answer:

can't tell if this is question, it is not written correctly

Explanation:

Electrical conductivity is the measure of a material's ability to allow the transport of an electric charge. Its SI is the siemens per meter, (A2s3m−3kg−1) (named after Werner von Siemens) or, more simply, Sm−1. It is the ratio of the current density to the electric field strength.

8 0
3 years ago
Warm air:
Andrei [34K]

Answer:

C

Explanation:

because warm air is less dense, and warm air rises and cold air sinks. (did research) hope this helps!! :)

4 0
4 years ago
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Current flowing in a circuit depends on two variables. Identify these variables and their relationship to current.
Nuetrik [128]
Wow ! This question reads like it might have come from one of
Faraday or Maxwell's original laboratory notebooks.

Choice-A is the correct one, when you consider what "conductance"
means. Conductance is just 1/resistance .

So when you see
"A) Current is proportionate to the conductance of the circuit and
precisely proportional to the voltage applied across the circuit."

what it's saying is
"Current is inversely proportional to the resistance of the circuit, and
directly proportional to the voltage applied across the circuit."

If you write the equation for all those words, it looks like

I = V / R

and that's correct.
5 0
4 years ago
Read 2 more answers
A disk between vertebrae in the spine is subjected to a shearing force of 425 N. Find its shear deformation, taking it to have a
zzz [600]

Answer:

option A

Explanation:

given,

shear force = 425 N

Shear modulus = 1.7 × 10⁹ N/m²

disk equivalent to solid cylinder

height = 0.7 cm  and diameter = 6.50 cm

\delta = \dfrac{VL}{AG}\\\\\delta = \dfrac{425\times 0.007}{0.25 \times \pi d^2\times 1.7\times 10^9}\\\\\delta = \dfrac{425\times 0.007}{0.25 \times \pi\times 0.065^2\times 1.7\times 10^9}\\\\\delta  = 5.27 \times 10^{-7} m

hence, the correct answer is option A

3 0
4 years ago
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