How many minutes does it take for light to go from the sun to the planet Uranus, a distance of 2.88x109 km? (The velocity of light is constant in free space and is 3.00x108 m/s)

t = 160 minutes

Explanation:

Given that,

Distance of Uranus from Sun is

We need to find the time taken by the light to go from sun to Uranus if the velocity of light is constant in free space and it is equal to c.

So,

Since, 1 minute = 60 seconds

t = 160 minutes

So, 160 minutes is taken by the light.

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

ill do it for 100, also this isnt 80 its 40