9*9=81 ,a good way to remember is 9 times 2 is 18 so u just flip it
3 bar. 1 bar normal air pressure and 2 bar for being 20 m underwater
Answer: Curved mirrors often reflect a distorted image that looks different from how you look in real life. Low-quality mirrors are also likely to produce image distortions and give your face an asymmetrical appearance, which is perceived as ugly.
Explanation:
True, if you move something forward at 100 miles an hour but your on something moving backwards 100 miles an hour you up staying in the same location, aka zero velocity.
Answer:
When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can only happen when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon.