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3 years ago

Matter and energy cycle around our ecosystem, are never being created or destroyed.

Physics

2 answers:

madreJ [45]3 years ago

6 0

Matter and energy cycle around our ecosystem are never being created or destroyed- true

andreyandreev [35.5K]3 years ago

4 0

Answer:

a) True

Explanation:

In a motion there are three things that are conserved, they are called momentum, angular momentum and emery. It is true for all isolated systems.

The conservation of energy principle states that "Energy can neither be created nor be destroyed but it is possible to convert one type of energy into another type of energy."

Based on this principle we can understand that the energy associated with matter is released into ecosystem when it is broken but energy is absorbed back from the ecosystem while binding matter together. The energy absorbed is called (binding energy). The mass itself is a type of energy.

So matter and energy are never being created or destroyed. They are the same since the beginning of universe.

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marin [14]

Answer:

$T=66262.4s$

Explanation:

From the question we are told that:

Altitude $A=2.90 *10^7$

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Generally the equation for Satellite Speed is mathematically given by

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$V=3354.83m/s$

Therefore

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$T=\frac{2 \pi *(6.38 *10^6+2.90 *10^7}{3354.83}$

$T=66262.4s$

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3 years ago

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WITCHER [35]

The answer to question one is A.
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3 years ago

An 8.0 cm object is 40.0 cm from a concave mirror that has a focal length of 10.0 cm. Its image is 16.0 cm in front of the mirro

svet-max [94.6K]

We can rearrange the mirror equation before plugging our values in.
1/p = 1/f - 1/q.
1/p = 1/10cm - 1/40cm
1/p = 4/40cm - 1/40cm = 3/40cm
40cm=3p <-- cross multiplication
13.33cm = p

Now that we have the value of p, we can plug it into the magnification equation.

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3 years ago

Suppose you have a 75-watt light bulb that you leave turned on for two minutes. How much energy

victus00 [196]

Answer:

9000 J

Explanation:

Convert minutes to seconds.

2 min = 120 s

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2 years ago

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wlad13 [49]

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