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Effectus [21]
2 years ago
6

What is the original source of the energy stored in fossil fuels?

Physics
1 answer:
KengaRu [80]2 years ago
6 0

Answer:

Plants the chloroplasts

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Calculate the amount of heat liberated (in kj) from 411 g of mercury when it cools from 88.0°c to 12.0°c.
Katen [24]
You should note that the melting point of mercury is -38.83°C, while the boiling point is at 356.7°C. Then, that means that there is no latent heat involved here. We only compute for the sensible heat.

ΔH = mCpΔT
The Cp of mercury is 0.14 J/g·°C
Thus,
ΔH = (411 g)(0.14 J/g·°C)(88 - 12°C)
<em>ΔH = 4,373.04 J</em>
5 0
3 years ago
What is the arrangement of the forms of electromagnetic radiation according to their wavelengths?
Svetradugi [14.3K]
Gamma rays then x rays then UVA rays then visible light then IR then radio waves (from highest to lowest frequency).
6 0
3 years ago
Assuming that the hill on the left will provide all of the potential energy for the ride, would this roller coaster actually mak
trapecia [35]
Yes I believe it would I think the answer is D
3 0
3 years ago
How many dots should be drawn in the lewis dot structure for an atom of sodium A)19 B)8 C)4 D)1
Stells [14]
Na is in the first column on the periodic table so therefore it would have 1 valence electron
D 1
6 0
2 years ago
The position of the front bumper of a test car under microprocessor control is given by x(t) = 2.31 m + (4.90 m/s2)t2 - (0.100 m
vovangra [49]
The equation of the car is given by the equation,

                          x(t) = 2.31 + 4.90t² - 0.10t⁶

If we are going to differentiate the equation in terms of x, we get the value for velocity.

                  dx/dt = 9.8t - 0.6t⁵

Calculate for the value of t when dx/dt = 0.

                 dx/dt = 0 = (9.8 - 0.6t⁴)(t)

The values of t from the equation is approximately equal to 0 and 2. 

If we substitute these values to the equation for displacement,

(0)   , x = 2.31 + 4.90(0²) - 0.1(0⁶) = 2.31

(2)    , x = 2.31 + 4.90(2²) - 0.1(2⁶) = 15.51

Thus, the positions at the instants where velocity is zero are 2.31 and 15.51 meters. 
3 0
3 years ago
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