The hydrogen in the universe was formed by the energy of the Big Bang
a. True
b. False
Indicate whether the statement is true or false
True
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The resolving power of a microscope refers to the ability to
A) distinguish objects of different colors. B) form clear images of two points that are very close together. C) form a very large image. D) form a very bright image. E) form a very microscopic image.
Matter can be defined as anything that ______________ ______________ and ______________ ______________
Fill in the blank(s) with correct word
Imagine that you visit an alien world that has an atmospheric composition similar to that of Earth (that is, mostly nitrogen and oxygen) and a surface atmospheric pressure of 1.2 bars. Which of the following statements best describes the effects of this pressure?
a. It will feel quite similar to the atmospheric pressure on Earth. b. It will feel about like the pressure on a high mountaintop on Earth. c. It will feel crushing, like being deep under the ocean. d. It is so low that you'll need to wear a pressurized spacesuit to survive.
Every fundamental charged particle has an antiparticle such that when the particle and antiparticle collide, they annihilate each other to create two (uncharged) photons. What does conservation of charge imply about how a particle’s charge compares to that of its antiparticle? The particle’s and antiparticle’s charges
A. must be identical in sign and magnitude. B. must have opposite signs and the same magnitude. C. must have opposite signs, maybe different magnitudes. D. must each be zero. E. are not constrained at all by charge conservation.