If an element has 15 protons and 16 neutrons and 15 electrons, what is the mass number of the element?
A) 31
B) 15
C) 16
D) 30
E) none of the above
Answer: A
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What characteristic of Uranus makes it stand out from all the other Jovian planets?
a. the farthest planet from the Sun b. rotates on its side c. has the longest orbital period d. Its moon is the same size as the planet e. atmosphere contains methane
Explain why the principle of homogeneity is an important aspect of the cosmological principle
What will be an ideal response?
In one-dimensional motion where the direction is indicated by a plus or minus sign, the average velocity of an object has which of the following properties?
a. It is positive. b. It is negative. c. It is zero. d. It can be positive, negative, or zero.
Which of the following is true about the rotation of the Moon?
What will be an ideal response?