Which type of spacecraft does NOT need to carry any fuel?
A) nuclear rockets
B) ion engines
C) solar sails
D) chemical rockets
C
You might also like to view...
Which of the jovian moons is the largest and also the largest moon in the solar system, even bigger than Mercury?
A) Titan B) Triton C) Ganymede D) Callisto E) Umbriel
Which is longer, the sidereal or synodic month? Why?
What will be an ideal response?
A piano wire of length 1.5 m vibrates so that one-half wavelength is contained on the string. If the frequency of vibration is 65 Hz, the amplitude of vibration is 3.0 mm, and the density is 15 g/m, how much energy is transmitted per second down the wire?
a. 21 W b. 11 W c. 5.4 W d. 2.2 W e. 1.1 W
Which of the following is not caused by side branches on a polymer?
(a) Decreased density (b) Decreased transparency (c) Decreased crystallinity (d) Decreased hardness