Isotopes of the element named ______________ probably will be the fuel for the first commercial fusion reactors
Fill in the blank(s) with correct word
hydrogen
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An electron is released from rest at the negative plate of a parallel-plate capacitor. If the distance across the plate is 2.0 mm and the potential difference across the plate is 6.0 V, with what velocity does the electron hit the positive plate? (me = 9.1 × 10^?31 kg, e = 1.6 × 10^?19 C)
a. 2.1E+5 m/s b. 1.5E+12 m/s c. 5.3E+5 m/s d. 1.5E+6 m/s e. 2.1E+6 m/s
_____ is a process by which an organism extracts energy from the surroundings, maintains itself, and modifies the surroundings to foster its own survival and reproduction
A) Fission B) Life C) Fossilization D) Mineralization
If 
= 5.0, 
= 8.0, and ? = 30°, determine the scalar product of the two vectors shown.
?
?
A. ?35
B. +35
C. ?20
D. +20
E. +40
The horizontal speed of a projectile
a. is zero. b. stays constant. c. continuously increases. d. continuously decreases. e. sometimes decreases and sometimes increases.