5. Starting at sea level, a diver descends into the ocean at a rate of 12 feet per minute. Write and evaluate an expression to show how far the diver will descend in 7 minutes.

b.a device that inputs heat into a cool object

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