Global positioning satellites (gps) can be used to determine positions with great accuracy. the system works by determining the distance between the observer and each of several satellites orbiting earth. if one of the satellites is at a distance of 20,000 km from you, what percent accuracy in the distance is required if we desire a 5 meter uncertainty?
%
how many significant figures do we need to have in the distance?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?