PLEASE HELP 13. In the mesosphere (an upper portion of our atmosphere) temperatures can get very low. At -15°C the speed of sound is actually only 93% as fast as it normally would be... a) What is the speed of sound in the mesosphere? m/s

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

i believe the answer is a hope it and is correct