# How much energy reaches the earth's surface in one square foot?

The amount of energy varies and depend on factors that include distance from the equator, height above sea level and of cource weather. An average of 1,000watts per meter (peak) is usually quoted for engineering purposes and there are an estimated 6 hours of peak exposure. To get the energy per square foot, take 1000watts and multiply by .093 This results in 93 watts per square foot. The amount of energy varies and depend on factors that include distance from the equator, height above sea level and of cource weather. An average of 1,000watts per meter (peak) is usually quoted for engineering purposes and there are an estimated 6 hours of peak exposure. To get the energy per square foot, take 1000watts and multiply by .093 This results in 93 watts per square foot.

### What would be the amount of energy from the sun to hit the earths surface on a clear day the amount in 1 second?

Outside the atmosphere, the power that hits Earth's surface is about 1.361 kilowatts per square meter; for the entire Earth, the power is about 1.740Ã—1017 Watts. (Reminder: 1 watt = 1 joule / second.) This is the amount outside the atmosphere; how much reaches the Earth will depends on clouds, etc, but ideally, about 2/3 of this power should reach the surface.

### What is the area of Asia in square miles?

Asia - 17,212,000 sq. miles about 30% of the earths surface First off, Wrong. Second off, Wrong again. Water covers 75% of earths surface so how is Asia 30% of earths surface Even still, If Asia was 17,212,000 square miles then the Earth must be the size of Pluto xD Correct answer - Asia is more than 3 billion square miles

### What percent of the incoming solar energy reaches the earth?

On the side of Earth facing the Sun, a square kilometer at the outer edge of our atmosphere receives 1,400 megawatts of solar power every minute, which is about the capacity of the largest electric generating plant in Nevada. Only about half of that amount, however, reaches Earth's surface. Comment: I guess the question must mean the Earth's surface. Otherwise the answer would be 100%.

### How does the Suns energy flow change with the distance from the sun?

The Sun radiates its energy in every direction. The amount of energy received per square meter of exposed surface will decrease by the square of the distance. So, if you double the distance, the amount of energy received will be reduced to one-fourth; if you triple the distance, the energy will be reduced to one ninth.

### How much energy from the sun reaches the ground per square meter per second?

The earth receives an average of 164 watts per square meter from the sun. This is the average spread over the world including poles and tropics, night and day. The energy in units used commonly in commerce (kilowatt-hours) would be about 45 millionths of a kilowatt hour per second per square meter. More important is the calculation of how much usable energy reaches the ground where the energy could be put into use. At 40…

### What is earth's solar constant?

The Solar Constant refers to how much energy Earth gets from the Sun, per square meter (or another convenient unit of area). It is approximately 1.3-1.4 kW/m2 at the top of the atmosphere; the amount that reaches the surface is perhaps 2/3 of that value under ideal conditions - for example, no clouds.

### Why is sounds fainter further away?

As the sound wave travels out from the source, the same amount of energy is covering a bigger and bigger area, so there is less energy per square inch. (In particular, less energy in the square inch reaching your eardrum.) Imagine the energy as a lump of clay. When a sound wave is only 6 inches (15cm) from the source, the clay has to cover the *surface* of a radius 6in ball, and the clay…

### About what percent of the incoming energy from the Sun' reaches Earth's surface?

It's possible to calculate it accurately. The Sun's power at the Earth's distance causes the Earth to intercept power over a circular area that is presented to the Sun, with a diameter equal to the diameter of the Earth, 12750 km, that's an area of 127 million square km. The same power density also occurs everywhere on a sphere centred on the Sun and with a radius of 149.6 million km (the average Earth-Sun distance)…

### How much square miles are on Mars' surface?

The surface area of Mars is 144,798,500 km2which is approximately 55,907,000 square miles. The surface area of Mars is 144,798,500 km2which is approximately 55,907,000 square miles. The surface area of Mars is 144,798,500 km2which is approximately 55,907,000 square miles. The surface area of Mars is 144,798,500 km2which is approximately 55,907,000 square miles.

### How big is the earth moon and sun?

the earth is 5.9736×1024 KG, with a circumference of 24,901.5 miles and surface area of 196,935,000 sq miles the moon is 7.347 7 × 1022 KG (0.012 3 Earths), with a diameter of 3,474 km, roughly a quarter of the earth's, while the surface area of the moon is 37.9 million square kilometers the sun is .9891 ×1030 KG, which is 332 946 Earths, with a diameter of 1.4 million kilometers (900,000 miles), with a…