What makes a particle strange?
a. It can spontaneously change its charge.
b. Its mass is too small to compare to other particles.
c. Its mass is too large to compare to other particles.
d. It decays at an inexplicably fast speed.
e. It lasts much longer than expected.
e
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If a cast iron has the UNS designation F2XXXX it is _________cast iron.
Fill in the blank(s) with the appropriate word(s).
A Mack truck and a Volkswagen traveling at the same speed have a head-on collision. The vehicle that undergoes the greatest change in velocity will be the
A) Volkswagen. B) Mack truck. C) same for both.
Compared to a bar of pure gold, the density of a pure gold ring is
A) less. B) the same. C) slightly more. D) much more.
An object is placed at F in front of a concave mirror with a focal length of 10 cm. What is the position of its image in relation to the mirror and what are its characteristics?
A) = 10 cm, real, smaller than object B) = 10 cm, virtual, smaller than object C) = 20 cm, real, bigger than object D) = 20 cm, virtual, bigger than object E) = ?, real, much bigger than the object