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andreyandreev [35.5K]
2 years ago
15

According to the graph, how many light-colored moths existed in year 2?

Physics
2 answers:
Arte-miy333 [17]2 years ago
6 0
B bc the white dot is almost in the middle of 500 and 600
Darina [25.2K]2 years ago
3 0
B is the answer

Explanation: look at the graph
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Calculate the magnitude and direction of the electric field 2.0 m from a long wire that is charged uniformly at λ = 4.0 × 10-6 C
Len [333]

Answer: 71.93 *10^3 N/C

Explanation: In order to calculate the electric field from long wire we have to use the Gaussian law, this is:

∫E*dr=Q inside/εo  Q inside is given by: λ*L then,

E*2*π*r*L=λ*L/εo

E= λ/(2*π*εo*r)= 4* 10^-6/(2*3.1415*8.85*10^-12*2 )= 71.93 * 10^3 N/C

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2 years ago
How long will it take a car to travel a distance of 1km if it has an average speed of 60kph​
beks73 [17]

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1÷60 h

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3 years ago
what is the process by which overlying pressure from rocks and soil reduces the size or volume of sediments.
tatuchka [14]

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Read more on Brainly.com - brainly.com/question/14295948#readmore

Explanation:

6 0
3 years ago
What are (a) the charge and (b) the charge density on the surface of a conducting sphere of radius 0.20 m whose potential is 240
Lady bird [3.3K]

Answer:

(a) charge q=5.33 nC

(b) charge density σ=10.62 nC/m²

Explanation:

Given data

radius r=0.20 m

potential V=240 V

coulombs constant k=9×10⁹Nm²/C²

To find

(a) charge q

(b) charge density σ

Solution

For (a) charge q

As

V_{potential}=kq/r\\ q=rV_{potential}/k\\q=\frac{(0.20)(240)}{9*10^{9} }\\ q=5.333*10^{-9}C\\or\\ q=5.33nC

For (b) charge density

As charge density σ is given as:

σ=q/(4πR²)

σ=(5.333×10⁻⁹) / (4π×(0.20)²)

σ=10.62 nC/m²

3 0
2 years ago
Why are solids good at transferring heat through conduction?
seraphim [82]
The chemical bonds alow it to pass to the other object.
6 0
3 years ago
Read 2 more answers
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