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2 years ago

A liquid does not have a definite shape, but it does have a definite volume. TRUE or FALSE

2 answers:

5 0

This is true. Liquids take the shape of the container they are in, therefore the shape may change. However, the volume remains in the same.

il63 [147K]2 years ago

4 0

Well it's False. They have a definite volume, but not a definite shape. GASES have neither a definite shape nor definite volume! Hope I could help!

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notsponge [240]

Answer:

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Explanation:

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2 years ago

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How many nanoseconds are there in 1.90 yr ? Express your answer using three significant figures.

shepuryov [24]

   (1.9 yr) x (365.24 day/yr) x (86,400 sec/day) x (10⁹ nsec/sec)

   = (1.9 x 365.24 x 86,400 x 10⁹) nanosec

   = 6.00 x 10¹⁶ nanoseconds

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2 years ago

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shepuryov [24]

Answer:

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Explanation:

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2 years ago

How does light and heat energy from the sun reach earth?

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2 years ago

A Van de Graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like prot

Rzqust [24]

Answer:

595391.482946 m/s

$3.21875\times 10^{6}$

Explanation:

E = Energy = 1.85 keV

I = Current = 5.15 mA

e = Charge of electron = $1.6\times 10^{-19}\ C$

t = Time taken = 1 second

m = Mass of proton = $1.67\times 10^{-27}\ kg$

Velocity of proton is given by

$v=\sqrt{\dfrac{2E}{m}}\\\Rightarrow v=\sqrt{\dfrac{2\times 1.85\times 10^3\times 1.6\times 10^{-19}}{1.67\times 10^{-27}}}\\\Rightarrow v=595391.482946\ m/s$

The speed of the proton is 595391.482946 m/s

Current is given by

$I=\dfrac{\Delta Q}{t}\\\Rightarrow \Delta Q=It\\\Rightarrow \Delta Q=5.15\times 10^{-3}\times (1\ sec)\\\Rightarrow Q=5.15\times 10^{-3}\ C$

Number of protons is

$n=\dfrac{Q}{e}\\\Rightarrow n=\dfrac{5.15\times 10^{-3}}{1.6\times 10^{-19}}\\\Rightarrow n=3.21875\times 10^{6}\ protons$

The number of protons is $3.21875\times 10^{6}$

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3 years ago