Find the order of magnitude of your age in seconds

1 answer:

6 0

The order of magnitude of my age in seconds is 10^9. I think you'll find that this is true for anyone who is 32 or older.

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If we observe a star over 6 months and obtain a parallax angle (p) for the star, how can we calculate the distance to the star?

OLEGan [10]

Write the angle in seconds (1/3600 of a degree). It'll be less than 1 second for any star. Now, take the reciprocal of the number of seconds. (1/seconds). That number is the distance to the star, in "parsecs". 1 parsec = about 3.26 light years. The nearest star, Alpha Centauri, has a parallax of 0.75481 second. The reciprocal of that number is 1.3248 . Multiply that by 3.26156 light years per parsec, and you get 4.32103 light years. The awesome thing about it is how in the world they were able to measure 0.75481 of a second of parallax. That's 0.00020967 of one degree ! And they have to measure it between two times that are six months apart ! ! And that's the nearest star, with the greatest parallax ! ! ! Totally incredible.

5 0

3 years ago

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A 65-cm segment of conducting wire carries a current of 0.35

algol13

The intensity of the magnetic force exerted on the wire due to the presence of the magnetic field is given by
$F=ILB \sin \theta$
where
I is the current in the wire
L is the length of the wire
B is the magnetic field intensity
$\theta$ is the angle between the direction of the wire and the magnetic field

In our problem, L=65 cm=0.65 m, I=0.35 A and B=1.24 T. The force on the wire is F=0.26 N, therefore we can rearrange the equation to find the sine of the angle:
$\sin \theta= \frac{F}{ILB}= \frac{0.26 N}{(0.35 A)(0.65 m)(1.24 T)}=0.922$

and so, the angle is
$\theta=\arcsin(0.921)=67.1^{\circ}$

6 0

3 years ago

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Which is most likely an example of pseudoscience?

Montano1993 [528]

I would say its the last answer

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3 years ago

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What is the difference between diatomic and poly-atomic molecules? Site some examples.

Olegator [25]

Their difference lies in the prefix used before each root word, atom. The diatomic molecules are composed only of 2 atoms such as that of the diatomic elements: H2, O2, N2, Cl2, etc. On the other hand, polyatomic molecules are made up of three or mole atoms such as NH4+, H2SO4, etc.

8 0

3 years ago

As amplitude of a wave increases, the

agasfer [191]

i think so it is frequency

7 0

2 years ago