The Lorentz factor, ?,
A) is always greater than 1 for any speed greater than zero.
B) lets the time-dilation equation be expressed t = ? t0.
C) both of these
D) none of these
Answer: C
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Fill in the blank(s) with the appropriate word(s).
For safety in climbing, a mountaineer uses a 50-m long nylon rope that is 1.0 cm in diameter. When supporting a 90-kg climber, the rope elongates 1.6 m. Find the Young's modulus for the rope material.
What will be an ideal response?
Classify the following statement as a characteristic
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1.electric forces 2.magnetic forces 3.both electric and magnetic forces 4.neither electric nor magnetic forcesThe diagram illustrates a light source, a gas cloud, and three different lines of sight. Along which line of sight would an observer see an emission spectrum?
a. 1
b. 2
c. 3
d. 2 and 3
e. none of them