The fission reaction involves

A) the splitting of a large molecule into smaller molecules.
B) the splitting of a heavy nucleus.
C) the combining of two low-mass nuclei.
D) the combining of two lighter molecules into a heavier molecule.
E) the splitting of a light nucleus.


B

Physics & Space Science

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Ice is less dense than liquid water because of ______________ bonding

Fill in the blank(s) with correct word

Physics & Space Science

The lifetime of uranium 238 is 6.0 × 109 y, and that of uranium 235 is 1.0 × 109 y. The present abundance of uranium 238 is 140 times the abundance of uranium 235. What was the ratio of abundances 1 billion years ago?

A) 140:1 B) 6:1 C) 61:1 D) 161:1 E) 322:1

Physics & Space Science

A series LR circuit consists of a battery, resistor, inductor and a switch. When the switch is closed the circuit has a time constant of 8.0 s. If the resistance and inductance of the circuit are both doubled, what is the resulting time constant?


A. 8.0 s
B. 16 s
C. 32 s
D. 4.0 s
E. 2.0 s

Physics & Space Science

The top quark

a. is the only quark not yet detected experimentally. b. has been shown not to exist. c. was discovered at Fermilab. d. none of the above

Physics & Space Science