The planet Mars has a mass of 6.42 * 10^{23} kg, and a radius of 3390 km. How much would an astroid with a mass of 570 kg weigh on the surface of Mars? Select one:

a. 2130 N
b. 15,800 N
c. 11,400 N
d. 1750 N

Iwill give brainliest if you answer right : )

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z

What causes the formation of ocean currents?