A block of granite is actually mostly empty space because the atoms making up the granite are
A) in perpetual motion.
B) made of cotton candy.
C) not as close together as they could be.
D) held together by electrical forces.
E) themselves mostly empty space.
E
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Graphical Analysis: If the position versus time graph of an object is a horizontal line, the object is
A. moving with constant non-zero speed. B. moving with constant non-zero acceleration. C. at rest. D. moving with increasing speed.
Identify at least three patterns of motion or planetary arrangement/location that a theory of solar system formation should be able to explain.
What will be an ideal response?
A particle with a charge of 4.0 ?C has a mass of 5.0 × 10-3 kg. What electric field directed upward will exactly balance the weight of the particle?
A) 4.1 × 102 N/C B) 8.2 × 102 N/C C) 4.4 × 104 N/C D) 1.2 × 104 N/C E) 5.1 × 106 N/C
A sound with a frequency of 25 kHz is in the ______________ region of the sound spectrum
a. infrasonic b. ultrasonic c. audible d. visible