PLEASE HELP! 580 nm light shines on a double slit
with d = 0.000125 m. What is the
angle of the first bright interference
maximum (m = 1)?
(Remember, napo means 10-9.)
(Unit = deg)

ammonium chloride & tallow

multiply 2kg by latent heat of vap

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards