What is different between a particle and its antiparticle?
a. opposite electric charge
b. opposite strangeness
c. opposite charm
d. all of the above
D
There are more possible "opposites" as well.
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Eccentric Jupiters would probably eject any terrestrial planet from the planetary system where they are found
Indicate whether the statement is true or false
Control rods are inserted into a nuclear reactor when you want the nuclear reaction rate to ________.
Fill in the blank(s) with the appropriate word(s).
Neglecting all types of friction, if two identical sleds, one empty and the other with four heavy passengers, start sliding down a hill together, the heavier sled will get to the bottom
1) before the empty car, 2) after the empty car, 3) at the same time as the empty car, while in the presence of air resistance, the heavier car will get to the bottom 4) before the empty car. 5) after the empty car. 6) at the same time as the empty car.
The cores of the Moon and Mercury are similar in that
A) both cores are more iron rich than the rest of the body and the core is solid throughout. B) both cores are large in proportion to the object with a solid inner core and fluid outer core. C) both cores are more iron rich than the rest of the body, with a solid inner core and fluid outer core. D) both cores are small in proportion to the object, with a fluid inner core and solid outer core.