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Anna11 [10]
3 years ago
13

**HELP ASAP PLEASE!**

Physics
2 answers:
guapka [62]3 years ago
8 0
I think, according to Neil DeGrasse Tyson's Cosmos, that it would be either A. or B. That should eliminate the answers that I am pretty sure don't make sense. Though I am pretty sure it should be A...... 

P.S. You should watch Cosmos! It's pretty good!
Setler79 [48]3 years ago
7 0
They use a spectrograph so the answer would be B.
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Why are very high temperatures and pressures required for fusion to occur?
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Answer:

b

Explanation:

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Radon-222 transforms into polonium-218 and an alpha particle (he-4). what else is created?
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Which of these is most likely to lead directly to a black market?
Nookie1986 [14]
 I would say it's rationing: if people are only allowed a certain number of something (let's say: bottles of cooking oil), then the people who are entitled to is (as all are) but don't need is as much are likely to try to make profit by trying to sell it on a black market.
4 0
3 years ago
Read 2 more answers
A lever has a mechanical advantage of 5.4. If you apply a force of 500 N to the lever, how much force does the lever apply to th
Yanka [14]

Force applied by the lever to the object=2700 N

Explanation:

Mechanical advantage= \frac{LOAD}{EFFORT}

mechanical advantage= 5.4

effort force= 500 N

we need the load force

5.4= load/500

load=2700 N

Thus the force applied by the lever to the object=2700 N

6 0
3 years ago
A particle is located on the x axis 4.9 m from the origin. A force of 38 N, directed 30° above the x axis in the x-y plane, acts
Juli2301 [7.4K]

Answer:

Torque is 93 Nm anticlockwise.

Explanation:

We have value of torque is cross product of position vector and force vector.

A force of 38 N, directed 30° above the x axis in the x-y plane.

        Force, F = 38 cos 30 i + 38 sin 30 j = 32.91 i + 19 j

A particle is located on the x axis 4.9 m and we have to find torque about the origin on the particle.

Position vector, r = 4.9 i

Torque, T = r x F = 4.9 i x (32.91 i + 19 j) = 4.9 x 19 k = 93.1 k Nm

So Torque is 93 Nm anticlockwise.

7 0
3 years ago
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