Quantum physics (quantum theory, quantum mechanics)

Homework from 2 nd lecture
Calculate from classical considerations the force
exerted on a perfectly reflecting mirror by a laser
beam of power 1W striking the mirror perpendicular to
its surface.
The solar irradiation density at the earth's distance
from the sun amounts to 1.3 kW/m 2 ; calculate the
number of photons per m 2 per second, assuming all
photons to have the wavelength at the maximum of the
spectrum , i.e. ≈ max ). Assume the surface
temperature of the sun to be 5800K.
how close can an particle with a kinetic energy of 6
MeV approach a gold nucleus?
(q = 2e, q Au = 79e) (assume that the space inside
3
the atom is empty space)