speed of sound in dry air at 20 °C is___________?

Related Mcqs:

The pyramid of energy in any ecosystem is _________?

A. Always upright B. May be upright or invented C. Always inverted D. Always Circle...

In 2013, Planck measured the age of the universe at ___________?

A. 13.82 billion years B. 4.53 billion years C. 4.6 billion years D. 4.53 billion years...

Frog Heart has how many chambers?

A. 2 B. 3 C. 4 D. 5...

Where would you find a Eustachian Tube?

In the Brain In the Lung In the Ear In Stomach...

The process by which air flows from one location in the atmosphere to another is called__________?

A. Convection  B. Radiation C. Conduction D. Electromagnetic Induction...