Time is relative, what does that mean?

1 answer:

5 0

It means that the passage of time changes in different reference frames that are moving relative to each other.

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Please help me answer this question

Pavel [41]

It can either be all of them or just 1 and 3

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3 years ago

Which parts of the graph would increase if all of earth's polar ice melts? Which part would decrease?

Sedbober [7]

Answer:

the answer to the question is the part that is reflected by clouds and atmosphere 26%

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3 years ago

Which group in the periodic table is known as salt farmers?

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Which group in the periodic table is known as salt formers?

The correct option is the last one: Halogen family.

You can find the halogen or "salt formers" in the group 17 of the periodic table. These are:

- Fluorine.
-Chlorine.
- Bromine.
- Iodine.
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3 years ago

Read 2 more answers

About 65 million years ago an asteroid struck Earth in the area of the Yucatán Peninsula and wiped out the dinosaurs and many ot

9966 [12]

Answer:

$2.44156\times 10^{13}\ m^3$

29010.53917 m

Explanation:

$\rho$ = Density of asteroid = 2 g/cm³

V = Volume

d = Diameter = 10 km

r = Radius = $\dfrac{d}{2}=\dfrac{10}{2}=5\ km$

v = Velocity = 11 km/s

$H_v$ = Heat vaporization of water = $2.26\times 10^6\ J/kg$

$\Delta T$ = Change in temperature = 100-20

Mass is given by

$m=\rho V\\\Rightarrow m=\rho\dfrac{4}{3}\pi r^3\\\Rightarrow m=2000\dfrac{4}{3}\times \pi\times 5000^3\\\Rightarrow m=1.0472\times 10^{15}\ kg$

The kinetic energy is

$K=\dfrac{1}{2}mv^2\\\Rightarrow K=\dfrac{1}{2}1.0472\times 10^{15}\times 11000^2\\\Rightarrow K=6.33556\times 10^{22}\ J$

Heat is given by

$Q=mc\Delta T+mH_v\\\Rightarrow 6.33556\times 10^{22}=m\times (4186\times (100-20)+2.26\times 10^6)\\\Rightarrow m=\dfrac{ 6.33556\times 10^{22}}{4186\times (100-20)+2.26\times 10^6}\\\Rightarrow m=2.44156\times 10^{16}\ kg$