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3 years ago

Is 21 to the square root of 2 rational or irrational

Mathematics

1 answer:

Step2247 [10]3 years ago

3 0

It is equal to 21/2 which is a rational number

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What is 0.0000234 in scientific notation

Anni [7]

Answer:

0.0000234 to standard form

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3 years ago

Which of the following could be an interior angle measure of a regular polygon? A. 45º B. 72º C. 150º D. 173º

Natasha2012 [34]

take 360 and divide by the number of sides

regular means the sides are equal therefore the angles are equal

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3 years ago

Read 2 more answers

Solve this problem in your notebook using all four steps.

adelina 88 [10]

Answer:

5x = 5(10) = 50 inches

Step-by-step explanation:

Let x = length of shorter piece then

5x = length of the longer piece

x + 5x = 60

6x = 60

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3 years ago

Question 2 (1 point)<br> How much does the prefix milli multiply the value of a base unit?

I am Lyosha [343]

Answer:1000

Step-by-step explanation:

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3 years ago

When the velocity v of an object is very large, the magnitude of the force due to air resistance is proportional to v squared w

Sati [7]

Answer:

Step-by-step explanation:

The model fo the shell is given by the following equation of equilibrium:

$\Sigma F = -b\cdot v^{2} - m\cdot g = m\cdot \frac{dv}{dt}$

This first-order differential equation has separable variables, which are cleared herein:

$\int\limits^t_{0\,s} \, dt = -\frac{m}{b} \int\limits^{0\,\frac{m}{s} }_{600\,\frac{m}{s} } {\frac{1}{ v^{2}+\frac{m}{b}\cdot g } } \, dv$

The solution of this integral is:

$t = -\frac{m}{2b}\cdot \left[\tan^{-1} \left(\frac{v}{\sqrt{\frac{m\cdot g}{b} } }\right) - \tan^{-1} \left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } }\right)\right]$

$\tan^{-1} \left(\frac{v}{\sqrt{\frac{m\cdot g}{b} } } \right)=-\frac{2\cdot b\cdot t}{m} + \tan^{-1}\left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)$

$\frac{v}{\sqrt{\frac{m\cdot g}{b} } }=\tan \left[-\frac{2\cdot b\cdot t}{m} + \tan^{-1}\left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)\right]$

$v = \sqrt{\frac{m\cdot g}{b} } \left [\frac{\tan \left(-\frac{2\cdot b \cdot t}{m} \right)+ \left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)}{1 - \left(\frac{600}{\sqrt{\frac{m\cdot g}{b} } } \right)\cdot \tan \left(-\frac{2\cdot b \cdot t}{m} \right) }\right]$

4 0

3 years ago