What information does a star's spectrum offer about the star?

A soccer player kicks a ball with a speed of 30 m/s at an angle of 10. How long does the ball stay in the air?

White light falls on a yellow filter, if: (a) A green filter is placed behind a yellow filter, what is the colour of the light that will emerge from the green filter?

Explain how internal reflection plays an important part in the making of a rainbow.

One of any living thing is?

Deep currents circulate seawater around the globe due to differences in the density of water at different locations. Two factors that can alter the density of water are salinitymarine lifespecific heat and windtemperatureEarth's rotation.

What is the conversion of celcius to kelvin?

Why does the percentage of water vapor vary?

A situation that restricts something

Why is the sky blue all the time

Where did the rotational kinetic energy of the earth come from?