The 90W longitude meridian is the center of the ______________ Standard Time zone in the United States.
a. Pacific
b. Mountain
c. Eastern
d. Central
[Ques. 2] How much heat is necessary to change 20 g of water at 100C into steam at 100C?
a. 0.16 kcal
b. 10800 kcal
c. 10.8 kcal
d. 1.6 kcal
[Ques. 3] A neutron is characterized by the term thermal neutron when
a. its energy is of the order kT, where T is on the order of 0C.
b. its energy is of the order kT, where T is on the order of 0 K.
c. its energy is of the order kT, where T is on the order of 273C.
d. its energy is of the order kT, where T is on the order of 100C.
e. its energy is of the order kT, where T is on the order of 0R.
[Ques. 4] The 75W longitude meridian is the center of the ______________ Standard Time zone in the United States.
a. Pacific
b. Mountain
c. Eastern
d. Central
[Ques. 5] How much heat is necessary to change 10 g of water at 30C into steam at 100C?
a. 0.07 kcal
b. 0.7 kcal
c. 6.1 kcal
d. 0.67 kcal
[Ques. 6] A beam of 1-MeV gamma rays incident on a piece of 0.50-cm thick lead is reduced by 50 of its initial value. How thick must the lead be to reduce the beam to one percent of its initial value?
a. 1.1 cm
b. 2.2 cm
c. 3.3 cm
d. 4.4 cm
e. 8.4 cm
[Ques. 7] At which latitude is the noonday Sun overhead only once a year?
a. 10S
b. 23S
c. 4N
d. 30N
[Ques. 8] A sample of gas has its number of molecules quadrupled, its Kelvin temperature doubled, and its volume tripled. By what factor has the new pressure changed relative to the original pressure?
a. 2.7
b. 1.7
c. 24.3
d. 24
[Ques. 9] In this course we have seen that baryons have inertial and gravitational mass, intrinsic angular momentum, and other internal properties that have been given names like baryon number, strangeness, charm, etc. The Standard Model's explanation for these properties of baryons is that
a. the baryons are states of something more elementary that can exist in multiple quantum states.
b. the leptons are states of something more elementary that can exist in multiple quantum states.
c. photons are states of something more elementary that can exist in multiple quantum states.
d. according to the Heisenberg Uncertainty Principle quantum numbers are indeterminate.
e. quarks are states of something more elementary that can exist in multiple quantum states.
[Ques. 10] At which latitude is the noonday Sun overhead twice a year?
a. 30S
b. 23S
c. 24N
d. 30N
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