The unit for electromotive force (emf) is
A. N/C.
B. A.
C. V.
D. N.
E. ohm.
Answer: C
Physics & Space Science
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A proton is moving at 
m/s and experiences a magnetic force of magnitude 
If the magnetic field makes an angle of 40
with respect to the velocity of the proton, what is the field's magnitude?
A. 
B. 
C. 
D. 
E. 
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In the development of a terrestrial planet, the stage of ____ occurred when molten rock flowed through fissures and filled deep basins
a. differentiation b. cratering c. glaciation d. accretion e. flooding
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________ galaxies may bridge the gap between spiral galaxies and quasars
A) Hickson B) Arp C) Core-halo D) Seyfert E) Hubble
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Many of the brightest stars we see are only a few million years old
Indicate whether the statement is true or false
Physics & Space Science