A uranium nucleus (mass 238 units) at rest decays into a helium nucleus (mass 4.0 units) and a thorium nucleus (mass 234 units). If the speed of the helium nucleus is 1.8 × 10^6 m/s, what is the speed of the thorium nucleus?
a. 1.0 × 10^4 m/s
c. 3.6 × 10^4 m/s
b. 3.1 × 10^4 m/s
d. 4.1 × 10^4 m/s
B
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Which of the following is not a sustainable source of materials?
(a) Ore (b) Plants (c) Municipal waste (d) Microorganisms
Conversion of Units: A cylindrical drinking glass has a diameter of 2.5 in. and is 5.5 in. tall. What is the volume of the drinking glass in cubic centimeters? (2.54 cm = 1.00 in.)
A. 170 cubic cm B. 440 cubic cm C. 350 cubic cm D. 710 cubic cm E. 530 cubic cm
Neptune's moon Triton
A) rotates in the opposite direction to Neptune's rotation B) orbits in the opposite direction to Neptune's rotation C) orbits about Neptune's rotational axes D) orbits in the same direction to Neptune's rotation
Which of the following is a result of particles of antimatter colliding with particles of normal matter?
A) The formation of a large particle of normal matter B) The conversion of the mass of the particles into energy C) The formation of a large particle of antimatter D) The creation of new, more massive particles