The y-component of a force vector is -15.0N, while its magnitude is 27.2N. Which could be the vector’s direction?
A.
below the +x axis
B.
below the -x axis
C.
below the -x axis
D.
below the +x axis
E. None of the choices are correct.
C.
below the -x axis
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The basic molecular building blocks of proteins are
A) nucleotides B) fatty acids C) amino acids D) monosaccharides
Compared to the Sun, older stars contain what proportion of elements heavier than hydrogen and helium?
A) a higher proportion B) exactly the same proportion C) they contain absolutely no heavy elements at all D) a lower proportion
The capacitors are completely discharged in the circuit shown below
The two resistors have the same resistance R and the two capacitors have the same capacitance C. After the switch is closed, the current
a.
is greatest in C1.
b.
is greatest in C2.
c.
is greatest in R1.
d.
is greatest in R2.
e.
is the same in C1, C2, R1 and R2.
Natural selection is random
a. True b. False Indicate whether the statement is true or false