An object has a mass of 12 kg. on planet a, the object weighs 69 n. the force of gravity on planet a is:
is it c
0.17 m/s2
5.75 m/s2
744 m/s2

An object has a mass of 12 kg. On Planet A, the object weighs 69 N. The force of gravity on Planet A is can be solve using the formula F=mg where F is the weight, m is mass and g is the force of gravity:

 g = F/m

g = 69 N/ 12 kg

g = 5.72 m/s2

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.