All categories

3 years ago

Please Help Me!!!

Physics

2 answers:

Roman55 [17]3 years ago

4 0

Answer:Its D

Explanation:

Because im not an idiot, i think.

OLEGan [10]3 years ago

3 0

Answer: C

Explanation: Polar molecules differ from nonpolar molecules by having positive and negative ends and stronger intermolecular forces of attraction Nonpolar molecules have only weak attractive forces for each other, so nonpolar substances tend to have low melting points and boiling points

You might be interested in

How long does a lunar eclipse last? A)seconds B)Minutes C)Days D) Weeks

bonufazy [111]

Well, it happens a few weeks ahead, then for a total of 3 hours and 40 minutes.

3 0

3 years ago

If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these star

torisob [31]

There's no such thing as "stationary in space". But if the distance
between the Earth and some stars is not changing, then (A) wavelengths
measured here would match the actual wavelengths emitted from these
stars. 

If a star is moving toward us in space, then (A) Wavelengths measured
would be shorter than the actual wavelengths emitted from that star.

In order to decide what's actually happening, and how that star is moving,
the trick is: How do we know the actual wavelengths the star emitted ?

7 0

3 years ago

How do solar panels work with conduction, convection and radiation?

Lady_Fox [76]

Answer:

In the case of a solar thermal panel we are trying to heat above the ambient temperature so conduction and convection will work against us by taking heat from the panel to the out- side world. ... The sun (at 6000 C surface temperature) is hotter than the solar panel so the panel will get hot due to the solar radiation.

Explanation:

3 0

3 years ago

A wire of radius R has a current I uniformly distributed across its cross-sectional area. Ampere's law is used with a concentric

MrMuchimi

Answer:

Please refer to the figure.

Explanation:

The crucial point here is to calculate the enclosed current. If the current I is flowing through the whole cross-sectional area of the wire, the current density is

$J = \frac{I}{\pi R^2}$

The current density is constant for different parts of the wire. This idea is similar to that of the density of a glass of water is equal to the density of a whole bucket of water.

So,

$J = \frac{I}{\pi R^2} = \frac{I_{enc}}{\pi r^2}\\I_{enc} = \frac{Ir^2}{R^2}$

This enclosed current is now to be used in Ampere’s Law.

$\mu_o I_{enc} = \int {B} \, dl$

Here, $\int \, dl$ represents the circular path of radius r. So we can replace the integral with the circumference of the path, $2\pi r$ .

As a result, the magnetic field is

$B = \frac{\mu_0}{2\pi}\frac{Ir}{R^2}$

5 0

3 years ago

A boy weighs 400N. what is his mass?

Basile [38]

≈40.8kg

this is to take up space

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

400

9.8

m/s

≈

40.8

4 0

3 years ago

Read 2 more answers