What is china clay?

778

If blue light is combined with green light, what color of light is produced?

909

Explain why does sun appear flat during sunrise and sunset?

863

How can sedimentary processes concentrate and form resources? Give an example of a resource formed by a sedimentary process.

739

What is solar eclipse?

826

Explain qualitatively the phenomenon of quantum tunneling of an electron across a potential barrier? : quantum physics

912

In which medium does the sound travel fatest?

941

An ice-box is built of wood 1.75 cm thick, lined with cork 3 cm thick. If in the steady state the temperature of the inner surface of the cork is 0 ºC and that of the outer surface of wood is 12 ºC, what is the temperature of the wood-cork interface? The thermal conductivities of wood and cork are 0.2 W/m-K and 0.04 W/m-K respectively

2627

How is sound produced?

889

why sink condition occur in vivo.???

2179

What is granite?

774

What is geology?

768

Will the shadow of an air plane fall over earth landspace while it is flying in air?

809

What is petroleum?

740

Which way do twin screw props on a boat rotate when propelling the boat forward?

872