Asatellite in a circular orbit 1250 kilometers above the earth makes one complete revolution every 110 minutes. assuming that earth is a sphere of radius 6378 kilometers,
what is the linear speed (in kilometers per minute) of the satellite?
what is the linear speed in kilometers per hour, in miles per hour?

Vt  =  435,49 Km/min

Vt  =  26129 Km/hour

Vt = 16630, 35  miles/hour

Step-by-step explanation:

The distance from earth center up to satellite position is:

earth radius  + distance above earth  

radius of satellite  6378 + 1250   =  7628 Km

linear speed = Vt  = 2π*r/T

where

r is radius of satellite and T period  =  110 min

Then

Vt  =  6,28* 7628 / 110

Vt = 47903/110

Vt  =  435,49 Km/min

To get it in Km/h we must multiply by 60

Vt  =  26129 Km/hour

And finally to get it in miles per hour we divide by 1,6

Vt = 16630, 35  miles/hour

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)