A spot at the equator goes around in about 24 days, while the polar regions take six days longer, according to this article on solar rotation on NASA's website. While the sun rotates differently than Earth does, its differential rotation is similar to the planet Jupiter and other gas giant...
One thing that has characterized the helicopter since its invention in the 1930s has been the absurdity of the machine. The contraption simply looks unable to deliver on its promise, which is to fly up and down, backward and forward, right and left. The famous U.S. broadcast journalist Har...
The downward flow of the water into the drain begins to rotate, and as the rotation speeds up, a vortex forms. Why does the water start rotating? There are many explanations, but here's one way to think about it: Imagine yourself as a particle in the water, suddenly pulled toward the...
given that the radius of the earth is 6.37 10^3km and the period of revolution of the moon round the earth is 27.3 days, calculate the average distance from the earth to the moon. How many hours would it take, traveling at 800 km...
In 1969, when astronauts actually landed on the moon, it took the Apollo 11 crew 109 hours and 42 minutes from liftoff to Neil Armstrong's first step on the moon. The reasons for these variable travel times to the moon depend on many factors, but one of the most important reasons is ...
the students will easily get bored if i f s not properly dealt with. 5 、He fam iliarized his son with different parts o f spee h in a senten e and dis u ssed their spe ifi gramm ati al fun tions in luding how to use adverb s to des rib e verbs. 6 、Be au se the son...
For instance, does an employee need to be paid for commuting to work? When does a workday start and end? Who qualifies for overtime pay? Disclaimer: Determining when a worker is “off the clock” is not as easy as many employers may think. Using common sense or good faith and ...
How long is one day on the planet Mars? How long is the moon cycle (phases)? Each day, how far does the moon move compared to the sun? About how long does it take the moon to orbit the Earth? How many days are in one light year? How long is one day on the planet Venus? Ho...
When is the best time to go on an African safari? How many days should I spend on an African safari? What are the most popular destinations on an African safari? What is each key safari country known for? What should I do on my African safari?
1. because English or history majors are considered less competitive when the job market is shrinking, and they have to study something that can help them more easily locate their future jobs. 2. because as the tuition is climbing higher and higher, many students have run away from studying ...