Length Contraction: A starship is constructed to be 100 m long in the factory. It is launched and as it coasts by Earth, it is measured to be shortened to 5.48 m long.(a) How fast, in terms of the speed of light, is it moving past Earth?(b) What length does the ship's crew measure for the ship?
What will be an ideal response?
(a) 0.9985c (b) 100 m
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A force of 15.0 N is applied to a wire with a diameter of 2.00 mm. If the wire changed length by 1.20 mm, then the stress in the wire is
a. 
b. 
c. 
d. 
e. 
Monochromatic light of wavelength 500 nm is incident normally on a diffraction grating. If the third-order maximum of the diffraction pattern is observed at 32.0° from the central spot, how many TOTAL number of maxima can be seen?
A) 5 B) 7 C) 10 D) 11 E) 13
Which of the following do the atoms 14C and 14N have in common?
A) total number of protons and neutrons B) number of electrons C) number of neutrons D) number of protons
In 1972 (see Figure 8.9 b), the screening curve differs from that from 1991 (the last year this information was readily available, Fig. 8.15). a. In 1972, what was the cheapest option for producing energy needed for 4000 hours peryear? Explain
b. Ignoring hydroelectricity, what was the cheapest option for producing energy needed for4000 hours per year in 1991? Explain. c. In 1972, what was the cheapest option for producing energy needed for 7000 hours peryear? Explain. d. Ignoring hydroelectricity, what was the cheapest option for producing energy needed for 7000 hours per year in 1991? Explain.