The lithospheric plates are believed to be put into motion by the driving force of ______________ cells in the asthenosphere
Fill in the blank(s) with correct word
convection
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If an electron is accelerated from rest through a potential difference of 1 200 V, find its approximate velocity at the end of this process. (e = 1.6 × 10^?19 C; me = 9.1 × 10^?31 kg)
a. 2.5E+7 m/s b. 2.1E+8 m/s c. 2.1E+7 m/s d. 4.2E+7 m/s e. 1.8E+8 m/s
With molar quantity and temperature held constant, by what factor does the pressure of an ideal gas change when the volume is four times bigger?
a. 16 c. 1/4 b. 4 d. 1/16
The period of a satellite circling planet Nutron is observed to be 84 s when it is in a circular orbit with a radius of 8.0 × 10^6 m. What is the mass of planet Nutron?
a. 6.2 × 10^28 kg b. 5.0 × 10^28 kg c. 5.5 × 10^28 kg d. 4.3 × 10^28 kg e. 3.7 × 10^28 kg
_________emission is when a filament is heated to a high temperature and emits electrons.
Fill in the blank(s) with the appropriate word(s).