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netineya [11]
3 years ago
6

Please help on this one?

Physics
2 answers:
Anit [1.1K]3 years ago
6 0

Answer :D

Some characteristics shared by all electromagnetic waves are that they all travel at the same speed of light and their own transmission does not need medium. These wave types can also travel through empty spaces

Marianna [84]3 years ago
5 0

It is D.They have the same speed

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Rank the pressures from highest to lowest:
n200080 [17]

Answer:

P₃ > P₁ > P₂

Explanation:

To rank pressure of the given situation

a) we know

  Pressure at height h below

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b) density of fresh water, ρ = 1000 kg/m³

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c) density of mercury, ρ = 13593 kg/m³

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3 0
3 years ago
On her camping trip, Penelope was in charge of collecting firewood. The firewood she found had a mass of 120 g and a volume of 4
zloy xaker [14]
From the formula: density=mass/volume
But first, we have to convert the cm³ to m³ by multiplying the value in cm³ by 10^-6, by so doing we'll have the volume to be 0.48*10^-3cm³.
we will also need to convert the mass which is in g to kg by simply dividing by 1000 so the mass becomes 0.12kg
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3 0
3 years ago
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