A police officer uses a radar gun to determine the speed of a car. A specialized radar gun uses ultraviolet light to determine the speed. What describes the wave used? check all that apply.

transverse
longitudinal
heat
electromagnetic
sound

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