What does it mean if the `alpha`-particle passes: through the foil of gold ?

What does angiosperm mean :-

A point particle if mass 0.1 kg is executing SHM of amplitude 0.1 m . When the particle passes through the mean position, its kinetic energy is 8 xx 10^(-3)J . Write down the equation of motion of this particle when the initial phase of oscillation is 45^(@) .

A point particle if mass 0.1 kg is executing SHM of amplitude 0.1 m . When the particle passes through the mean position, its kinetic energy is 8 xx 10^(-3)J . Write down the equation of motion of this particle when the initial phase of oscillation is 45^(@) .

In Rutherford experiment generally the thin foil of heavy atoms like gold platinum etc have been used to be bombarded by the alpha- particles If the thin foil of light atoms like aluminium etc is used what difference would be observed from the above results

What does it mean when a height of a barometer is rising ?

What is the direction of the line passing through the points (2, 1, 3) and (3, 2, -1) ?