A cheetah can run at approximately 100 km/hr and a gazelle at 80.0 km/hr. If both animals are running at full speed, with the gazelle 60.0 m ahead, how long before the cheetah catches its prey?
a. 6.30 s
c. 5.40 s
b. 21.6 s
d. 10.8 s
D
Physics & Space Science
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A) wire is used. B) string is used. C) either of these D) none of the above
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If light of wavelength 600 nm is used to locate an electron to one wavelength of the light, what is the maximum uncertainty in the electron's momentum?
a. 
b. 
c. 
d. 
e. 
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A proton, moving freely, has a wavelength of 0.600 pm
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