Satellite a revolves around earth 5 times a day. what is the radius of its orbit, measured from earth's center? assume that earth generates the only significant gravitation attraction on the satellite. note: the mass of earth is 5.98 × 1024 kg, and the constant of universal gravity (g) equals 6.674 × 10-11 n · m2/kg2.

0.69 × 107 m

7.22 × 107 m

2.11 × 107 m

1.44 × 107 m

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?