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2 years ago

What can i do to recycle?

Physics

1 answer:

mafiozo [28]2 years ago

8 0

Answer:

You could throw away the following items:

Mixed paper: Newspaper, magazine, junk mail, cardboard, frozen food packaging, wrapping paper, paper bags, etc.

Cans: aluminum, foil, tin, steal, aerosol (empty without pressure) and metal food trays. ...

Unbroken glass: Wine bottles, bottles and jars.

Plastic: Rigid containers like milk jugs, shampoo or water bottles.

Hope this helped

You might be interested in

How do you communicate better

dedylja [7]

Answer: Be honest, have confidence, talk face to face, listen to your partner's words, etc.

Hope this helps!

6 0

2 years ago

Astronomers observe a spectral analysis of a distant star where a particular element has a spectral line with a wavelength of 66

tekilochka [14]

Answer:

(a). The velocity of star is $8.1\times10^{6}\ m/s$ and the direction of star toward the earth.

(b). The shift is 0.0168 nm.

Explanation:

Given that,

Wavelength of spectral line = 663 nm

Wavelength of spectral line in lab = 645 nm

(a). We need to calculate the velocity

Using doppler's effect

$\Delta \lambda=\dfrac{v}{c}\lambda$

Where, $\Delta\lambda$ = change in wavelength

v = velocity

c = speed of light

Put the value into the formula

$663-645=\dfrac{v}{3\times10^{8}}\times663$

$v=\dfrac{3\times10^{8}(663-645)}{663}$

$v=8144796.38\ m/s$

$v=8.1\times10^{6}\ m/s$

The direction of star toward the earth.

(b). Speed = 7800 m/s

We need to calculate the shift

Using formula of shift

$\Delta \lambda=\lambda(\sqrt{\dfrac{1+\dfrac{v}{c}}{1-\dfrac{v}{c}}}-1)$

Put the value into the formula

$\Delta \lambda=645\times(\sqrt{\dfrac{1+\dfrac{7800}{3\times10^{8}}}{1-\dfrac{7800}{3\times10^{8}}}}-1)$

$\Delta\lambda=0.0168\ nm$

This shift is small compare to the the movement of Earth around the sun.

Hence, (a). The velocity of star is $8.1\times10^{6}\ m/s$ and the direction of star toward the earth.

(b). The shift is 0.0168 nm.

7 0

2 years ago

Sodium is a highly reactive metal and chlorodyne is a poisonous gas which compound do they for a chemically combines

stellarik [79]

A metal and a non-metal will form salt. Na+ and Cl- will form NaCl or commonly known as table salt

5 0

3 years ago

How to work out Initial volume Boyle’s law

SOVA2 [1]

Answer:if i know ill tell u

Explanation:

4 0

3 years ago

g The current through a 10 m long wire has a current density of 4 cross times 10 to the power of 6 space open parentheses bevell

olga55 [171]

Answer:

The value is $V = 2 V$

Explanation:

From the question we are told that

The length of the wire is $l = 10 \ m$

The current density is $J = 4*10^6 \ A/m^2$

The conductivity is $\sigma = 2*10^{7} \ S/m$

Generally conductivity is mathematically represented as

$\sigma = \frac{l}{RA}$

Here R is the resistance which is mathematically represented as

$R = \frac{V}{I}$

Here I is the current which is mathematically represented as

$I = J * A$

$R = \frac{V}{ J * A}$

And

$\sigma = \frac{l}{\frac{V}{ J * A} * A}$

=> $\sigma = \frac{l}{\frac{V}{J}}$

=> $V = \frac{l * J}{\sigma }$

=> $V = \frac{10 * 4*10^6}{2*10^{7} }$

=> $V = 2 V$

5 0

2 years ago