Green light in the visible portion of the electromagnetic radiation sepectrum has a wave length around 550nm. Express this wavelength in meters using exponential notation

Explanation:

Given,

Wavelength = 550 nm

We know,

now,

                        =

Hence, the wavelength of light in meters is equal to

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