What is the escape velocity from the Moon for a lunar landing module sitting on the Moon's surface? Hints: ; The mass of the Moon is 7.2 × 10^22 kg; its radius is 1738 km; G = 6.67 10^-11 m3/s2/kg
a. 2.3 m/s
b. 23 m/s
c. 2.3 km/s
d. 11 km/s
e. 23 km/s
c
You might also like to view...
A charge Q is spread uniformly along the circumference of a circle of radius R. A point particle with charge q is placed at the center of this circle. The total force exerted on the particle q can be calculated by Coulomb's law:
A) if you use R for the distance B) if you use 2R for the distance C) if you use 2?R for the distance D) and the result of the calculation is zero E) none of the above
Which of the following statements about electrical charge is true?
A) Two negative charges will attract each other. B) Two positive charges will attract each other. C) A positive charge and a negative charge will repel each other. D) A positive charge and a negative charge will attract each other.
The red hydrogen alpha line carries more energy per photon than the blue-green hydrogen beta line does
Indicate whether the statement is true or false
Nucleons are
A) hadrons. B) baryons. C) leptons.