Considering how small atoms are, what are the chances that at least one of the atoms exhaled in your first breath will be in your last breath?
A) Not very likely because atoms are constantly dematerializing.
B) Not possible at all because atom don't last that long.
C) Very probable because atoms are incredibly small.
D) There's not really a way that scientists are able to make such an estimate.
Answer: C
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Two life preservers have identical volumes, one filled with Styrofoam and the other filled with sand. When the two life preservers are worn by swimmers,
one swimmer floats with part of the preserver above water, and the other swimmer sinks. In this case the buoyant force is greater on the life preserver filled with A) Styrofoam. B) sand. C) same for both
When a positive charge q is placed in the field created by two other charges Q1 and Q2, each a distance r away from q, the acceleration of q is
a. in the direction of the charge Q1 or Q2 of smaller magnitude. b. in the direction of the charge Q1 or Q2 of greater magnitude. c. in the direction of the negative charge if Q1 and Q2 are of opposite sign. d. in the direction of the positive charge if Q1 and Q2 are of opposite sign. e. in a direction determined by the vector sum of the electric fields of Q1 and Q2.
How long can a four-solar-mass star live?
a. 1 solar lifetime b. 0.03125 solar lifetimes c. 3 solar lifetimes d. None of the other choices are correct.
Process of Science: Give examples of how we build upon our knowledge of stars to measure distances to the edge of the Universe
What will be an ideal response?