Category: Space and Astronomy

What countries have soft landed on the moon?

Uncrewed landings In 1966, the USSR accomplished the first soft landings and took the first pictures from the lunar surface during the Luna 9 and Luna 13 missions. The U.S. followed with five uncrewed Surveyor soft landings. What countries have landed objects on the moon? Missions to the Moon have been conducted by the following

How many stereoisomers does 1/2 Dimethylcyclobutane have?

How many stereoisomers are possible for Dimethylcyclobutane? To sum up, there are three isomers of 2,3-dimethylcyclobutane, a single cis isomer, and two enantiomeric trans isomers. The plane of symmetry is relatively easy to find and is the most common one to look for, but one other element of symmetry also guarantees an achiral molecule, and

What is the line of reflection?

line of reflection. • a line midway between something, called a pre-image, and its mirror reflection. How do you find the line of reflection? Take any point from the first line(The line which is being reflected). And then find a point such that the line(in which the reflection has to be seen) should bisect the

What does this symbol mean in math v?

While there are more sophisticated meanings in higher mathematics, most of the time you will see the inverted v it means the operation “to the power of.” For example, 5^2 is 5 to the power of 2, or 5 squared, which is 5×5=25. If you see 4^3 it is 4 to the power (or exponent)

How many atmospheres does the sun have?

The sun’s atmosphere: Photosphere, chromosphere and corona. Does the Sun have atmosphere? The photosphere, chromosphere, and corona are all part of the Sun’s atmosphere. (The corona is sometimes casually referred to as “the Sun’s atmosphere,” but it is actually the Sun’s upper atmosphere.) The Sun’s atmosphere is where we see features such as sunspots, coronal

How long can calla lilies stay out of water?

Hand-tied calla lily bouquets should stay fresh out of water for 12 to 24 hours, even with sealed ends. How long do lilies last without water? 1–2 weeks for Aster, Gladiolus, Tuberose, Lilies, Heather, Waxflower, Crysanthemum. How do you keep calla lilies alive indoors? INDOOR CALLA LILY CARE Keep the soil moist, but not soggy.

What is a tape diagram in 1st grade?

What is a tape diagram Grade 1? Tape diagrams are a visual strategy that shows your child addition and subtraction. Start with RDWW (read, draw, write a number sentence, write an answer statement), and let your child learn to draw a tape diagram to solve the problem. What are tape diagrams? A tape diagram is

Is the newsroom based on a true story?

This story is based on a real-life news scandal from 1998, in which CNN and TIME were both criticized for reporting a dubious and unreliably sourced story that the United States had used Sarin during the Operation Tailwind excursion in the Vietnam War. Why was newsroom canceled? Originally Answered: Why did HBO shut down The

What criteria is used to designate a Goldilocks planet?

The Goldilocks Zone refers to the habitable zone around a star where the temperature is just right – not too hot and not too cold – for liquid water to exist on an planet. What makes a planet a Goldilocks planet? Key Learning Points. A “Goldilocks Planet” is the right distance from its Sun to

How do you push in rear brake caliper piston?

How do you push a piston back into rear caliper? Video quote: That's going to push the piston back into its housing. And then once it's fully recessed just stop. And check and you can verify that because the piston will be fully into the housing. How do you push the brake piston back on?

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