The physical disintegration or fracturing of rock is called
a. mechanical weathering.
b. gradation.
c. chemical weathering.
d. none of these.
a
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Blackbody radiation is caused by an object's ____
a. chemical structure b. binding energy c. excitation level d. absolute zero e. thermal agitation
Star X has an apparent magnitude of 3, and star Y has an apparent magnitude of 8. What can we conclude?
A) Star X appears brighter in the night sky than star Y. B) Star Y appears brighter in the night sky than star X. C) Star X is farther away from us than star Y. D) Star Y is farther away from us than star X.
An electric field makes a charged particle accelerate but a magnetic field takes it around in a circle
Indicate whether the statement is true or false
When a current flows through an inductor, its mass
A) decreases. B) increases. C) stays the same. D) oscillates.