violet light (410 nm) and red light (685 nm) pass through a diffraction grating with a d=3.33x10-6 m. What is the angular separation between them for m=2?

0.11 m/s and 0.28 m/s should be correct

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

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