Answer:
Explanation:
mass of the astronaut including the spacesuit, 
distance of astronaut from the spaceship, d = 13 m
mass of the oxygen tank, m = 3 kg
Speed of tank with respect to spaceship, 
a)
<u>Using the conservation of linear momentum:</u>
total momentum before collision = total momentum after collision



b)
She mush hold her breath until she reaches the spaceship, i.e.



That depends on a number of things that we don't know because you haven't told us.
If any of the things on this list changes, then the answer to the question changes:
-- What is "it" ?
-- Was it dropped, thrown, fired, or launched ?
-- From what height above the ground ?
-- With what speed ?
-- In what direction ?
-- What is the acceleration of gravity where this took place ?
-- Did any drag act on it, due to liquid or gas, before it hit the ground ?
Answer:
2.88 × 10⁻¹⁸ C
Explanation:
The charge on a proton and electron are the same and it is = 1.6 × 10⁻¹⁹ C
The net charge electric charge of an iron atom = (number of proton × charge on a proton) + ( number of electron × charge on an electron ) = 26 (e) + 8 (-e) = 26 e - 8 e = 18 e = 18 × 1.6 × 10⁻¹⁹ C = 2.88 × 10⁻¹⁸ C
Satellites would be able to detect fires when they start and allow human monitors to review the information and issue warnings.