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Arte-miy333 [17]
2 years ago
10

What is 0.002 represented by

Physics
2 answers:
aleksandr82 [10.1K]2 years ago
7 0
Scientific notation
Helga [31]2 years ago
6 0
I think you want 2x10^-2
It’s called Scientific Notation
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3 years ago
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A mass on a spring A oscillates at twice the frequency of the same mass on spring B. Which statement is correct?A.The spring con
Nataliya [291]

Answer:

A.The spring constant for B is one quarter of the spring constant for A.

Explanation:

If spring A oscillates at twice the frequency of spring B, and period is frequency inverted. It means spring B has a period twice of spring A's.

T_B = 2T_A

As T = 2\pi\sqrt{\frac{m}{k}}, and the 2 springs have the same mass

2\pi\sqrt{\frac{m}{k_B}} = 2\pi\sqrt{\frac{m}{k_A}}

\sqrt{k_A} = 2\sqrt{B}

k_A = 4k_B

k_B = k_A/4

So A.The spring constant for B is one quarter of the spring constant for A. is the correct answer.

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3 years ago
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Alex Ar [27]

Answer:

1. the voltage will be 2.35×12.5 = 29.4V

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2 years ago
suppose you are walking home after school. The distance from school to your home is five kilometers. on foot you can get home in
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3 years ago
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A fluid flows along the x axis with a velocity given by V = ( x / t ) ˆ i , where x is in feet and t in seconds. (a) Plot the sp
umka21 [38]

Answer:

c)

 V_local = -x/t^2

 V_convec = x/t^2

d)

a =  V_local +  V_convec = 0

e) When a particle moves towards postive x direction its convective velocity increases, but at the same time the local velocity deacreases (at the same rate) when time increases

Explanation:

Hi!

You can see plots for a) and b) attached on this document

c)

The local acceleration is just teh aprtial derivative of the velocity with respect to t:

\frac{dV}{dt} = \frac{d}{dt} \frac{x}{t}=- \frac{x}{t^2}

And the convective acceleration is given by the product of the velocity times the gradient of the velocity, that is:

\vec{v} \cdot \nabla \vec{v} = v ( \frac{dv}{dx} ) =\frac{x}{t} \frac{1}{t} = \frac{x}{t^2}

d)

Since the acceleration of any fluid particle is the sum of the local and convective accelerations, we can easily see that it is equal to zero, since they are equal but with opposit sign

e)

This is because of teh particular form of the velocity. A particle will move towards areas of higher velocities (convectice acceleration), but as time increases,  the velocity is also decreasing (local acceleration), and the sum of these quantities adds up to zero

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