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finlep [7]
2 years ago
6

Which of the following has greater kinetic energy?

Physics
1 answer:
uysha [10]2 years ago
5 0
I aint got no clue ask someone that knows about this.
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The magnetic field of a long, straight, and closely-wound solenoid, inside the solenoid at a point near the center, is 0.645 T.
Savatey [412]

Answer:

B'=1.935 T      

Explanation:

Given that

magnetic field ,B= 0.645 T

We know that magnetic filed in the solenoid is given as

B=\mu _0 n\ I

I=Current

n=Number of turn per unit length

μ0 =magnetic permeability

Now when the current increased by 3 factors

I'=3 I

Then the magnetic filed

B'=\mu _0 n\ I'

B'=\mu _0 n\ (3I)

B'=3 B

That is why

B' = 3 x 0.645 T

B'=1.935 T

Therefore the new magnetic filed will be 1.935 T.

3 0
3 years ago
The model of the universe that suggests that the sun is the center of the universe was first brought by
lakkis [162]
It is D,Copernicus.when he first proposed the idea everyone thought he was nuts and that it was not plausible.even though his theory wasn't so accurate it still helped further scientific research.HE was born February 19,1473 and he published a book about his theory.
4 0
3 years ago
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How does increasing the tension of a spring affect a wave on the spring?
Liono4ka [1.6K]
More energy is being used in the movement

8 0
3 years ago
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Using at least 3 to 4 complete content related sentences describe the first and second postulate of special relativity.
Andrew [12]
Nothing can travel faster than the speed of light. As such, perceptions of objects and time change as they approach light speed, but the laws of physics remain consistent regardless of speed. Objects will appear shortened and time will appear to slow down around an observer approaching near light speeds, but all quantities still exist as they did before and all causality is preserved, even if observers in different points or traveling at different speeds will report different things.
8 0
3 years ago
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70-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 844 N. What is the acceleration o
mario62 [17]

Answer : The acceleration of the elevator is, 2.25m/s^2

Explanation :

Formula used to calculate the acceleration of the elevator is:

F=mg+ma\\\\ma=F-mg\\\\a=\frac{F-mg}{m}

where,

F = force = 844 M

m = mass of man = 70 kg

g = acceleration due to gravity = 9.8m/s^2

a = acceleration of the elevator = ?

Now put all the given values in the above formula, we get:

a=\frac{F-mg}{m}

a=\frac{844N-(70kg\times 9.8m/s^2)}{70kg}

a=2.25m/s^2

Thus, the acceleration of the elevator is, 2.25m/s^2

4 0
3 years ago
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