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kompoz [17]
3 years ago
7

How fast can a man run in miles per hour?

Physics
1 answer:
ExtremeBDS [4]3 years ago
6 0
Depends on how well built he is probably for the average American 8 MPH
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White light is incident on a diffraction grating. What color is the central maximum of the interference pattern?
lara [203]

Answer:

The color of the central maximum is white.

Explanation:

A diffraction grating in optics is generally known as an optical component that contains a periodic structure. It is commonly used to breakdown and diffract light into different beams that move in several directions. For example, if a light ray is allowed to pass through the component (i.e. diffraction grating), the   central maximum will have a white color.

8 0
4 years ago
PLS ANSWER FAST WILL GIVE BRAINLEST!!!
Tanya [424]

Answer:

F = 12 N

Explanation:

F = m × a

F = 3 × 4

F = 12 kg m/s²

F = 12 N

3 0
3 years ago
Determine the required height h of the roller coaster so that when it is essentially at rest at the crest of the hill A it will
Dmitriy789 [7]

Answer:

a) 39.37 m

b) 26.25 m

Explanation:

Given

speed of the roller coaster, v = 100 km/h = 100 * (1000/3600) m/s = 27.78 m/s

Using the law of conservation of energy.

Potential Energy = Kinetic Energy

mgh = 1/2mv²

gh = 1/2v²

h = v²/2g

h = 27.78² / 2 * 9.8

h = 771.7284 / 19.6

h = 39.37 m

Also,

kmg - mg = mv²/p

kg - g = v²/p

p = v²/g(k - 1)

p = 27.78² / 9.8(4 - 1)

p = 771.7284 / 29.4

p = 26.25 m

Therefore, the height of the roller coaster is 39.37 m and the radius of curvature required is 26.25 m

8 0
3 years ago
Which best describes a chain reaction associated with a nuclear reaction?
Free_Kalibri [48]
The correct answer for the question that is being presented above is this one: "A) self-sustaining." The term that <span>best describes a chain reaction associated with a nuclear reaction is self-sustaining.</span>
Here are the following choices:
<span>A) self-sustaining
B) weak
C) non-explosive</span>

5 0
3 years ago
Which feature of electromagnets makes them more useful than permanent
mezya [45]
I think it’s D................
4 0
3 years ago
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