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Karolina [17]
3 years ago
8

Unit 2 Lesson 7 Portfolio for physics

Physics
1 answer:
madam [21]3 years ago
4 0
If two charges are moved so that the distance between them is reduced
by half, then the forces between them become 4 times as strong.
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when a electric current is passed through an insulated wire that is coiled around an iron core like a nail what is created?
Anika [276]

electromagnet

When a electric current is passed through an insulated wire that is coiled around an iron core, like a nail, an electromagnet is created.

8 0
3 years ago
Find the magnitude of the vector<br> = (-3, 4).
Step2247 [10]

Answer:

we cant find the magnitude with just two coordinations.if that equation is y=mx....and we can think that these is also a cordintion (0,0)..because line cross the middle of the chart.then we can use the equation m= y difference/x difference

m=(4-0)(-3-0 )

m=4/(-3)

m=-1.333

7 0
3 years ago
Why did Jim Bridger build a fort along the Oregon Trail?
Mandarinka [93]
The answer for “Why did Jim Bridger build a fort along the Oregon Trail” is D
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X-rays with wavelengths of 0.95 nm are detected at a scattering angle of straight theta in a Compton-scattering experiment, as s
SIZIF [17.4K]

Answer:

The scattering angle is 0.80

Explanation:

As we know  

Wave length = h/mc (1-cos α) --1

W = mc^2

m = E/c^2

Substituting this in equation 1 we get  

Wavelength = hc/E (1-cos α)

Substituting the given values, we get -  

0.95*10^-9 = [(6.626 *10^-34 * 2.998 *10^8)/5.111*1000*1.6*10^-19} (1-cos α)

(1-cos α) = 1.14 *10^-10

cos α = 1- 1.14 *10^-10

α = 0.80

3 0
3 years ago
how much time does it take for a bird flying at a speed of 45 mph to travel a distance of 1800 miles?​
taurus [48]

1000 kilometres........

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2 years ago
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