Specific Gravity Vs. API Gravity of Hydraulic Oil?

Answer Specific gravity and API gravity are both measurements of density. They both can be used to measure the gravity of a fluid, such as hydraulic oil, in the same way that miles or kilometers can both ... Read More »

Top Q&A For: Specific Gravity Vs. API Gravity of Hydraulic Oil

When NASA was communicating with astronauts on the Moon the time from sending to receiving was 1.28 s What is the distance to the Moon based on this?

The radio signals travel at the speed of light, approximately 300,000 km/sec (186,000 mi/sec). The distance would be 1.28 x 300,000 or about 384,000 kilometers.*The actual time is an estimate, and ... Read More »

The National Aeronautics and Space Administration NASA says that there is ice on some parts of the moon. What does this tell you about temperatures on these parts of the moon?

The message is that it's really cold there. As the moon has no atmosphere, there is no atmospheric pressure. Atmospheric pressure has a pronounced effect on the boiling point of water. If the water... Read More »

During a new moon, how much of the moon receives direct sunlight from the sun?

The sun always shines on half of the moon, including during a new moon when, from Earth, the moon seems to have gone dark. During a new moon, the moon is between the sun and Earth, the moon's sun-... Read More »

Bad Moon Rising - CCR or Bark at the Moon - Ozzie?

Bad Moon Rising - CCR for sure.Embarrassing confession - When I was younger I used to think that the line "There's a bad moon on the rise" was actually "There's a bathroom on the right"