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2 years ago

Fronts are termed by the temperature of the air mass that overtakes another air mass. A. True B. False

Physics

2 answers:

Vikki [24]2 years ago

6 0

A. True
if cold air is replacing warm air it is a cold front and vice versa.

Reptile [31]2 years ago

6 0

Answer:

The Answer is B) False

Explanation:

The key word there is overtakes.

A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena outside the tropics.

Air masses create weather as they are moved by winds around the globe. Fronts develop at the boundary where two air masses with different temperatures—and, usually, different humidities—come into contact with each other or in essence collide.

The term front was suggested the creator of the word because the collision of two air masses reminded them of a battlefront during a military operation.

So air masses collide NOT overtake each other in order to form a front.

Cheers!

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Although the evidence is weak, there has been a concern in recent years over possible health effects from the magnetic fields ge

sergey [27]

Answer:

The magnetic field strength is $B = 2 \mu T$

Explanation:

From the question we are told that

The length line above the ground is $R = 20m$

The current of the line is $I = 200A$

The voltage of the line is $V = 110kV$

Generally magnetic field strength is mathematically represented as

$B = \frac{\mu_o I}{2 \pi R}$

Where $\mu_0$ is the permeability of free space $= 4\pi * 10^{-7} N/A^2$

$B = \frac{(4\pi * 10^{-7} N/A^2) *200}{2 \pi *20}$

$= (2.0*10^{-7})[\frac{200}{20} ]$

$= 2*10^{-6}T$

$= 2 \mu T$

Earths magnetic field is approximately given as $50 \mu T$

So the percentage would be

$= \frac{Magnetic \ Field \ Intensity \ Of \ Line}{Earth's \ Magnetic \ Field} * 100$

$= \frac{2 \mu T }{50 \mu T } * 100$

$=4$ %

7 0

2 years ago

HELP HELP HELP ME!!!

zzz [600]

I believe the answer is C. Hope this helps!!

7 0

2 years ago

Calculate the length of a simple pendulum that oscillates with a frequency of 0.4Hz g=10m/s2 , ^=3.142

earnstyle [38]

Answer:

Explanation:

For simple pendulum the formula is

$T=2\pi\sqrt{\frac{l}{g} }$

Where T is time period , l is length and g is acceleration due to gravity .

$\frac{1}{n} =2\pi\sqrt{\frac{l}{g} }$

n is frequency

Putting the values

$\frac{1}{.4} =2\pi\sqrt{\frac{l}{10} }$

$\frac{l}{10} = .1584$

l = 1.584 m

4 0

2 years ago

Why are TV shows nowadays so boring?

Anna [14]

The answer is a matter of opinion, and you're going to get different answers
from different people. Here's my take on it:

The writers, producers and advertising sponsors of these shows certainly
don't think they're boring. And definitely neither do the TV networks that
decide which ones to broadcast.

I'm not trying to say "The experts don't think they're boring, so you must
be wrong". I'm trying to say that different people have different opinions
about the same shows, and in your case, you find them boring.

My conclusion is this:
I think you're finding TV shows boring nowadays because you're growing
as a person. You've grown, developed, and matured to the point where
you're above the level of audience that the shows are pitched for. That's
a very good thing !

You're sad because you used to get pleasure and entertainment from TV,
and now it doesn't give you those things. That's like losing an old friend,
that you used to have such fun playing with, but he just doesn't do it for
you any more.

Now that you've grown up, you've made new friends. With them, you do
things that you wouldn't even understand with your younger friends. And
you develop new interests, like ... I don't know ... books, movies, hobbies,
your church, your profession, learning new things, developing new skills,
exercising your brain, writing, volunteer work, ham radio, building fine
furniture, singing, learning to write music, raising tropical plants, sculpture,
politics ... whatever turns you on. Some people never grow past the stage
where staring at the tube is all they need in life, because they don't have
what it takes to be interested in anything else. Those are the people that
TV is aimed at. But you have more, and that's why TV isn't enough for you.

There are other possible reasons why TV bores you. But until I know more
about you, I think it's a very, very good sign.

3 0

2 years ago

Read 2 more answers

The length of second, s pendulum at a place where gravitational acceleration ]g] is 9.8 m/s

amm1812

O.99 m long .simple pendulum time period is 2s for second formula then use formula T=2pi.rt(lenght/gravity)

6 0

2 years ago