What is Brass?

What is work? What is it equal to?

What is biogas? What are its components ? What is the calorific value of biogas?

What is wave? What are types of wave?

Two wires of diameter 0.25 cm, one made of steel and the other made of brass are loaded as shown in Fig. 9.13. The unloaded length of steel wire is 1.5 m and that of brass wire is 1.0 m. Compute the elongations of the steel and the brass wires:

The coefficient of cubical expansion of mercury is 0.00018 and that of brass 0.00006 per deg C. If a barometer having a brass-scale were to read 74.5 cm at 30^@C , find the true barometric height at 0^@C . The scale is supposed to be correct at 15^@C .

What is hibernation? What is the significance?

What is cancer? What are its causes ? What are methods ot detect cancers?