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alisha [4.7K]
3 years ago
5

What is a rubens tube

Physics
1 answer:
Free_Kalibri [48]3 years ago
6 0

Answer:

its an antique physics apparatus for demonstrating acoustic standing waves in a tube.

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Smaller-sized bags, I would think. There is less in the bags so she has less to eat. She would excersise a small bag off faster than a big bag.
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3 years ago
Rainbow is formed due to a combination of?​
Mademuasel [1]
Rainbow is formed due to dispersion and total internal reflection of sunlight and raindrops.
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Read 2 more answers
The induced magnetic field at radial distance 4.0 mm from the central axis of a circular parallel-plate capacitor is 1.8 ✕ 10−7
wel

Answer:

\frac{dE}{dt}=2.07*10^{13}\frac{V/m}{s}

Explanation:

According to Gauss's law, the electric flux through the circular plates is defined as the electric field multiplied by its area:

\Phi=EA=E(\pi R^2)(1)

The magnetic field around the varying electric field of the circular plates is given by:

B=\frac{\epsilon_0 \mu_o}{2\pi r}\frac{d\Phi}{dt}(2)

Replacing (1) in (2) and solving for \frac{dE}{dt}:

B=\frac{\epsilon_0 \mu_o\pi R^2}{2\pi r}\frac{dE}{dt}\\\frac{dE}{dt}=\frac{2rB}{\epsilon_0 \mu_o R^2}\\\frac{dE}{dt}=\frac{2(4*10^{-3}m)(1.8*10^{-7}T)}{(8.85*10^{-12}\frac{C^2}{N\cdot m^2})(4\pi *10{-7}\frac{Tm}{A})(2.5*10^{-3}m)^2}\\\\\frac{dE}{dt}=2.07*10^{13}\frac{V/m}{s}

3 0
3 years ago
By measuring the amounts of parent isotopes and daughter product in the minerals contained in a rock, and by knowing the half-li
sertanlavr [38]
The asker of the second question needs a tutorial in radiometric dating. There is little likelihood that the daughter isotope has the same atomic weight as the parent isotope. To measure the mass isotopes doesn't tell us how many atoms of each exist. To get around that let's pretend — which will likely serve the purpose ineptly intended — that the values give an the particle ratio, 125:875. 

<span>The original parent isotope count was 125 + 875 = 1000. The remaining parent isotope is 125/1000 or 1/8. 1/8 = (1/2)^h, where h is the number of half-lives. </span>

<span>h = log (1/8) ÷ log(1/2) = 3 </span>

<span>And 3 half-lives • 150,000 years/half-life = 450,000 years.</span>
4 0
3 years ago
A circuit was set up as shown in the diagram . The tgree resistors are identical
wolverine [178]
6 / 3 = 2
So the reading on the voltmeter will be 2.
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