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____ [38]
3 years ago
13

Which answer is right? thanks if u help me! :)

Physics
2 answers:
WINSTONCH [101]3 years ago
8 0

Answer: I believe the answer is 7.5 x 10^(14)Hz or 7.5E14Hz

Explanation: the formula for frequency is speed of the wave divided by the wavelength

f= c/wavelength

f- frequency

c-speed

(3 x 10^(8)) x (400 x 10^(-9))= 750,000,000,000,000 or 7.5E14 or 7.5 x10^(14)

enyata [817]3 years ago
7 0

Answer:7.5 x 10* 14

Explanation:

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A bag of cement has a mass of 62 g. What is the mass of the bag of cement in S.I. units (kg)?
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The mass of this bag of cement in S.I. units (kg) is equal to 0.062 kilograms.

<u>Given the following data:</u>

  • Mass of cement = 62 grams.

To calculate the mass of this bag of cement in S.I. units (kg):

<h3>How to convert to S.I. units.</h3>

In Science, kilograms (kg) is the standard unit of measurement or S.I. units of the mass of a physical object. Thus, we would convert the value of the mass of this bag of cement in grams to kilograms (kg) as follows:

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Read more on mass here: brainly.com/question/13833323

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