3 years ago

In what ways is the sun the earths energizer

1 answer:

5 0

All sources of energy on the planet (excluding nuclear reactions) are ultimately attributable to the sun. 'Fossil fuels' are derived from what once were living organisms, and all sources of food begin with primary producers (plants and algae which utilize photosynthesis).

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Bài 1. Ở nhiệt độ 17°C, có bao nhiêu phần trăm phân tử khí có các vận tốc sai khác

Damm [24]

Answer:

hi i only dont understand want ur saying

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3 years ago

Could I get help plz

Sloan [31]

Answer:

440hz

Explanation:

saxophone a plays at 430hz and a frequency of 5 beats per second can be heard so saxophone b is playing at a frequency 10hz louder than saxophone A making it 440hz

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3 years ago

A meter stick is supported by a pivot at its center of mass. Assume that the meter stick is uniform and that the center of mass

iragen [17]

Answer:

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3 years ago

a dump truck travels 70mph for 3 hours, then for 20mph for another 2 hours in the same direction. what is the average speed the

Dmitry_Shevchenko [17]

Answer:

the average speed of the car is 170 mph.

Explanation:

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The average speed of the car is calculated as;

$v' = \frac{70(3) - 20(2)}{3-2} \\\\v' = 170 \ mph$

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3 years ago

Sunlight reflects from a concave piece of broken glass, converging to a point 34 cm from the glass. what is the radius of curvat

wolverine [178]

The rays of light coming from the Sun are parallel to each other, so when they are reflected by the concave piece of glass (which acts as a concave mirror) they converge into the focus of the mirror, which is
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$r=2f = 2 \cdot 34 cm=78 cm$

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3 years ago