Energy from the core of the Sun first travels slowly through the convection zone and then much faster through the radiation zone
Indicate whether the statement is true or false
FALSE
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If the momentum of a particle is doubled, what happens to its de Broglie wavelength?
A. it doubles B. it halves C. it slightly more than doubles D. it becomes slightly less than half E. it decreases by a factor of 2-1/2
A velocity selector for ions uses perpendicular electric and magnetic fields. If the electric field used were 800 V/m, what magnetic field would allow the selection of a velocity of 4000 m/s?
A. 0.0400 T B. 0.0800 T C. 0.160 T D. 0.200 T E. 0.500 T
A(n) ____________________ is observed if our line of sight is along the rotation axis of an active galactic nucleus
Fill in the blank(s) with correct word
The most important factor which contributed to the thinning of the Martian atmosphere was probably the
A) blasting of gas into space by impacts B) loss of the planet's protective magnetic field as it rapidly cooled C) chemical reactions with surface rocks D) formation of the polar caps