Which statement must be true in order for a rocket to travel from Earth to another planet?
A) It must carry a lot of extra fuel.
B) It must have very large engines.
C) It must attain escape velocity from Earth.
D) It must be launched from space, rather than from the ground.
C
You might also like to view...
Studies of solar vibrations have revealed that
A) the Sun vibrates only on the surface. B) neutrinos from the solar core reach the solar surface easily. C) the Sun generates energy by nuclear fusion. D) they are caused by processes similar to those that create earthquakes. E) our mathematical models of the solar interior are fairly accurate.
In a hydrogen atom, a given electron has n = 7. How many possible values can ? have?
A) 6 B) 7 C) 15 D) 98
Dripstone formations that form on cavern floors are called _____________
a. stalactites b. pool stones c. stalagmites d. sedimentary
Which of the following expresses 5.2 × 10-5 s correctly using the metric prefixes given?