What is igneous rock?

802

A solar collection has been installed to heat water. A large water tank has a volume of 5.0 x 105 cm3. The area of the solar collectors is 8m2. (2 meters by 3 meters). If the water in the tank starts out with a temperature of 30°C in the morning, what is its temperature in the evening after the sun has set?

1988

Draw a graph between frequency of photon and velocity of photo electron?

892

Explain reflection of light?

1002

Explain what is relation between magnetic and electricity and why?

938

Similar charges repel while dissimilar ones attract each other. How does two electrons attract each other during the formation of bond or why don't the protons in the nucleus repel?

2409

How do minerals turn into rocks?

743

What is tone control?

987

Which atomic model did erwin schrodinger create?

1048

In universe there exist temperature of 1000000 degree Centigrade, does there also exist the temperature of -1000000 degree centigrade ?? (in order to satisfy newton's second law)

2325

What is stope in geology?

867

What is meant by energy spectrum of a black body? : quantum physics

871

Explain when are intermolecular forces the strongest?

967

Explain the characteristics of dead stars?

969

What is the shadows?

977