Alpha and Omega

What is the average speed of sound at room temperature

• 330 m/s

• 0 m/s

• None

Speed of super sonic planes in km/hour

• 1234.8 km/hour

• 330 km/hour

• 0 km/hour

• None

what is the speed of light in air

•  $3\times10^8\ \frac{m}{s}$  

•  $3\times10^5\ \frac{km}{s}$  

•  $3\times10^8\ \frac{km}{s}$  

• None

Unit for Work Done ?

• Celsius

• Volt

• Newton

• Joule