Quasars are radio sources that look like stars in visible-light photographs
a. True
b. False
Indicate whether the statement is true or false
True
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The flow patterns found on the surface of Mars and the number of craters on top of them suggest that
a. Mars is today a liquid, water-rich world. b. the climate on Mars was different billions of years ago. c. volcanism is occurring on Mars. d. the polar caps are made of liquid water. e. All of the other choices are correct.
What formation does a cinder cone volcano have?
What will be an ideal response?
In general, what can be said about type O and B stars compared to type K and M stars?
A) They are hotter and younger. B) They are cooler and older. C) They are cooler and younger. D) They are hotter and older. E) They are neither hotter nor cooler, younger nor older.
A 500?g block traveling at 60 cm/s slides onto a 1?kg cart as shown. The block stops sliding before reaching the end of the cart
As the block is sliding on the cart,
which object has the larger acceleration?