3 years ago

Two characteristics of radiowaves

1 answer:

4 0

Radio waves have the same velocity as any other electromagnetic wave, which is the speed of light (300 000km/second). ... Radio waves have the longest wavelength in the whole electromagnetic spectrum. Gamma rays have the highest frequency and the shortest wavelength. The shorter the wavelength, the higher the frequency.

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Help for this practice work

allochka39001 [22]

Answer:

It's the third option.

Explanation:

In order for the chemical equation to be correctly it needs the same number of atoms of each element on both sides of the equal sign

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2 years ago

A sample of barium nitrate is placed into a jar containing water. The mass of the barium nitrate sample is 27g. Assume the water

34kurt

So we have Barium nitrate with a solubility of 8.7g in 100g water at 20°C.

using that relation
i.e.
8.7g (barium nitrate) =100g (water)
1g barium nitrate = 100/8.7 g water

27g barium nitrate = (100/ 8.7 ) × 27
= 310.34 g

therefore,
you need 310.34g of water is in the jar.

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3 years ago

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About how many millions of tons of paper and paperboard were consumed worldwide in 1970? 1980? 1990? 2000?

ad-work [718]

2000 IS RIGHT BECAUSE IT IS

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3 years ago

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Convert 6.33×10−6 cg to nanograms.

tensa zangetsu [6.8K]

5.73e+8 hope this help

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3 years ago

What is the affect of increasing the water's mass?how does it reflect it's temperature?

Nikolay [14]

I assume what you're asking about is, how does the temperature changes when we increase water's mass, according the formula for heat ?
Well the formula is : $Q=m\cdot c\cdot \Delta t$ (where Q is heat, m is mass, c is specific heat and $\Delta t$ is change in temperature. So according this formula, increasing mass will increase the substance's heat, but won't effect it's temperature since they are not related. Unless, if you want to keep the substance's heat constant, in that case when you increase it's mass you will have to decrease the temperature

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3 years ago

Two characteristics of radiowaves​

Two characteristics of radiowaves