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dsp73
1 year ago
14

An x-ray has a wavelength

Chemistry
1 answer:
goldfiish [28.3K]1 year ago
5 0

Answer:

C

Explanation:

For electromagnetic waves frequency X wavelength = speed of light

                                                f * 2.2 x 10^-11  = 3 x 10^8  m/s

                                         f = 3 x 10^8 / 2.2 x 10^-11

                                            = 1.36 x 10 ^19

                                             = 1.4 x 10^19   with two significant digits

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3 years ago
a hammer has the volume of 11.5 cubic centimeters. it also has the mass of 500 grams. what is the hammer density​
dsp73

Answer:

<h3>The answer is 43.48 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 500 g

volume = 11.5 cm³

We have

density =  \frac{500}{11.5}  \\  = 43.47826086...

We have the final answer as

<h3>43.48 g/cm³</h3>

Hope this helps you

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