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Scilla [17]
3 years ago
12

Which of the following defines "frequency"?

Physics
1 answer:
I am Lyosha [343]3 years ago
8 0
<span>the distance between adjacent peaks in a series of periodic waves</span>
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Qroups of specialized cells that work together are called____
kiruha [24]
Groups of cells make tissues.
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The BOLD sentence above is your answer.
4 0
3 years ago
A less-dense liquid of density rho1 floats on top of a more-dense liquid of density rho2. A uniform cylinder of length l and den
Umnica [9.8K]

Answer:

Explanation:

Given

\rho=density\ of\ cylinder\\\rho_1=less\ dense\ cylinder\\\rho_2=more\ dense\ cylinder

Suppose V is the volume of a cylinder

Also L_1=length\ in\ less\ dense\ part\\L_2=length\ in\ dense\ part\\L=length\ of\ cylinder\\V=A\times L\\where\ A=area\ of\ cross-section\\

Now, we can write

The weight of the cylinder is supported by the buoyant forces of two liquids

\rho Vg=\rho_1 V_1g+\rho_2 V_2g\\\rho ALg=\rho_1 A\times L_1g+\rho_2 A\times L_2g\\\\\rho L=\rho_1 L_1+\rho_2 L_2\\Also, L=L_1+L_2

using the above equation we can write

L_2=\frac{\rho-\rho_1}{\rho_2-\rho_1}\cdot L\\\frac{L_2}{L}=\frac{\rho-\rho_1}{\rho_2-\rho_1}

5 0
3 years ago
What does the column that an element is in tell you?​
Mumz [18]

Answer:

The column number tells us the amount of valence electron the element has

8 0
3 years ago
60 point!!!
erastova [34]

Answer:

Playing hockey, driving a car, and even simply taking a walk are all everyday examples of Newton's laws of motion.

7 0
3 years ago
A 3.0 pF capacitor consists of two parallel plates that have surface charge densities of 1.0 nC/mm2 . If the potential between t
Archy [21]

Answer:

A=81mm^2

Explanation:

We know that for a capacitor Q=CV, where <em>Q </em>is the charge of one plate, <em>C</em> the capacitance and <em>V</em> the potential between the plates.

We also know that Q=\sigma A, since \sigma is the surface charge density and <em>A</em> the area of the plate (both equal in our case).

Putting all together:

A=\frac{CV}{\sigma}

Which for our values is:

A=\frac{(3\times10^{-12}F)(27\times10^3V)}{1\times10^{-9}C/mm^2}=81mm^2

Where we notice that the S.I. units combination FV/C must not have units (we can verify it directly from their definitions or we notice that mm^2 is enough to describe an area).

8 0
3 years ago
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