Why ate the air passengers requested to see that their fountains pen Are not completely filled ?

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a car is travelling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. at 72kmph, how long did it take for the car to cover that distance?

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Explain how many femtometers are in a nanometer?

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Explain the Archimedes’s Principle ?

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What two properties of electromagnetic waves are used to attach info to radio signals?

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Explain what is the translucent?

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Explain Solution ?

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What is the difference between Centigrade and Fahrenheit thermometers ?

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When sound waves travel from air to water, what happens to its frequency?

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what is the principle used in electromagnetic spectrum?and why there is a necessary of having an electron with unpaired spins?and how the uncertainity principle is used to determine the frequency of an spectral lines ?

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Does a soccer ball go faster in the air on a cold or hot day?

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Explain one advantage of a scanning electron microscope over a transmission electron microscope?

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