Physics common task 1

What is a wave?

Transverse

Longitudinal

the energy transfer is perpendicular to the motion causing it

The energy transfer is parallel to the motion causing it

E.g sound, ultra sound

E.g light Em spectrum, water waves

A wave transfers energy without transferring matter.

Equation for waves

V=fy

V=wave speed (m/s)

f=frequency (HZ)

y=wave length (m)

Development of an atom

inside a atom

proton

mass=1 charge +1

neutron

mass=1 charge 0

electron

mass= 1/1860 charge -1

top number on top of atom

protons and neutrons (mass number)

number at bottom of atom

proton number (atomic number)

A atom has a neutral charge because it i has same number of protons and neutrons

plum pudding model

Ball of positive charge with negatively charged particle inside it

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