Combined Science HelP

sgx_finance_amateur SG

Lets Post some helP for the forummer here on Combined Science here !!

sgx_finance_amateur SG

Define the terms

1)evaPoration

2)boiling

boiling - at boiling Point only

evaPoration ,all temPerature ..

sgx_finance_amateur SG

In solids ,thermal energy is transferred by conduction

What is the cause of conduction ?

infra-red radiation , molecular vibration ??

sgx_finance_amateur SG

State two difference between a electromagnetic wave and a sound wave ,both of wavelength one metre.

Solution :

An electromagnetic wave is a transverse wave which propagate in a vacuum whereas a sound wave is a longitudinal wave which cannot propagate in a vacuum.

D92/P2/B3