A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect.
The primary greenhouse gases in Earth's atmosphere are water vapor (H2O), carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone (O3).
Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F).
The atmospheres of Venus, Mars and Titan also contain greenhouse gases.
The primary greenhouse gases in Earth's atmosphere are water vapor (H2O), carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone (O3).
Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F).
The atmospheres of Venus, Mars and Titan also contain greenhouse gases.
Answer: 1.12E2
Do not enter ±1%.
One percent here is the range of answers that the test system evaluates as correct. Deviation of the student's answer from the correct value by less than one percent is not considered an error.
One percent here is the range of answers that the test system evaluates as correct. Deviation of the student's answer from the correct value by less than one percent is not considered an error.
Here's the general rule for rounding:
If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up.
Example: 1.235 rounded to the 3 significant figures is 1.24
If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down.
Example: 1.234 rounded to the 3 significant figures is 1.23
From the hint, use radii: the radius of the Earth is 1 radius of the Earth. The radius of Jupiter is equal to 11.19 radii of the Earth. Calculate the ratio: 11.19 / 1 = 11.19
Don't convert the result from regular notation to scientific notation, as this question doesn't have that requirement.
If the diameter of the first spherical object is 3 times the diameter of the second spherical object, then how many times the volume of the first object is greater than the second. | |||||
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From the hint:
V₁/V₂ = (πd₁³/6) / (πd₂³/6) = d₁³/d₂³ = (d₁/d₂)³ = 3³ = 3⨯3⨯3 = 27
The orbital period of a satellite is the time it takes for it to complete one revolution around the Earth. Since the satellite is geostationary, this means that this time must be equal to the time of one rotation of the Earth around the Earth's axis of rotation, but it must be observed relative to the stars. So, the answer is a sidereal day. But we know (see the hint) that a sidereal day is about 4 minutes shorter than a solar day. So the answer is: 24 hours - 4 minutes = 23 hours 56 minutes.
Method of the calculation
In your internet browser make the copy of the text of the formula.
Then paste the text to the Google search of your internet browser.
Replace the degrees angle symbols with the word "degrees":
sin -106degrees + cos 296degrees / (sin -326degrees - tan 236degrees )
Click "enter".
The Google will give you following result:
-1.43601403294
Transform this number from normal notation to the scientific notation for computers with 3 significant figures:
-1.44E0
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