The intensity of the sun light is 1000remember that the glass has two surfaces. ignoring secondary reflections, what is the intensity of the transmitted light, i. through the window and into the air on the other side? ] the sun shines on a glass window with index of reflection 1.6 at normal select one of the following (a) 9.5 x 102 w (b) 1.0 x 102 w (c) 5.0 x 101 ww (d) 9.0 x 102 w (e) toby w

given data:

determine the horse power (h.p) = ?

force applied to move the box(f) = 10 pounds,

box lifted from a distance         (d) = 3 feet

time taken to lift                         (t) = 10 sec,

the horse power is defined as amount of work required to move a load. the horse power is equal to 550 foot-pound per second

                  1 h.p   = 550 foot-pound/second

it can also be defined as the the load that need to be move a body for certain distance in a certain amount of time.

mathematically,

                      h.p = (force × distance)/ time

                            = (10 × 3)/ 10

                            = 30/10

                            = 3 foot -pound/sec

hence, the horse power is needed to move the box is 3 foot-pound/second

important note: 1 h.p = 550 foot-pound/second = 746 watts

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