3 years ago

Electromagnetic waves all move at the same wave speed. which of these offer solutions to slowing them down select all that apply

Physics

1 answer:

Lelechka [254]3 years ago

6 0

option c...have the waves move thru the vacuum or space

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many lichens are composed of fungi and algae. The fungi get sugars from the algae, and the algae get water, minerals, and protei

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3 years ago

A perpetual motion machine can never be built because it is not possible to eliminate

d1i1m1o1n [39]

Answer:

D. Friction

Explanation:

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3 years ago

The average diameter of one tennis ball in a package of three is 6.8 cm. Which of the following is the combined volume of all th

Crank

We want to find the combined volume of 3 tennis balls. We will get that the combined volume is 493.7 cm^3

First, remember that for a sphere of diameter D, the volume is:

$V = \frac{4}{3}*3.14*(\frac{D}{2})^3$

Where 3.14 is pi.

Here we know that the average diameter of a tennis ball is 6.8cm, then we can replace that in the above equation to find the volume (in average) of a single tennis ball:

$V = \frac{4}{3}*3.14*(\frac{6.8cm}{2})^3 = 164.5 cm^3$