Why can a rather small meteorite make such a big crater when it hits?
A. It is traveling so fast that it has a very large kinetic energy even with small mass.
B. It is so hot from its passage through the air that it melts the surroundings.
C. Air pressure on the leading side of the meteorite forms a shock wave that blows out the crater.
D. Meteorites are much harder than the surface of the planet, and punch through it easily.
Answer: A
You might also like to view...
Volcanic eruptions on one satellite of the outermost jovian planets, Neptune and Uranus, have been photographed by spacecraft. Which satellite, and what is erupting from this type of volcanism?
What will be an ideal response?
In a grandfather clock, the pendulum measures the time elapsed. A grandfather clock is gaining time. Should you shorten or lengthen the pendulum?
What will be an ideal response?
A long straight wire is parallel to one edge and is in the plane of a single-turn rectangular loop as shown. If the loop is changing width so that the distance x changes at a constant rate of 4.0 cm/s, what is the magnitude of the emf induced in the loop at an instant when x = 6.0 cm? Let a = 2.0 cm, b = 1.2 m, and I = 30 A
a.
5.3 ?V
b.
2.4 ?V
c.
4.8 ?V
d.
2.6 ?V
e.
1.3 ?V
The quantum number that can have only two possible values is the:
a. orbital quantum number. c. spin magnetic quantum number. b. principal quantum number. d. orbital magnetic quantum number.