What is the most common element that forms four
single covalent bonds in organic compounds?
a)hydrogen
b)oxygen
c)carbon
d)gold
c
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Instructions: On occasion, the notation = [A, ?] will be a shorthand notation for
.
Dana says any vector can be represented as the sum of two vectors:
. Ardis says any vector
can be represented as the difference of two vectors:
. Which one, if either, is correct?
A.
B.
C.
D.
E.
A segment of wire carries a current of 25 A along the x axis from x = -2.0 m to x = 0 and then along the z axis from z = 0 to z = 3.0m. In this region of space, the magnetic field is equal to 40 mT in the positive z direction. What is the magnitude of the force on this segment of wire?
a. 1.0 N b. 5.0 N c. 2.0 N d. 3.6 N e. 3.0 N
We have direct evidence from ALMA that supports nebular theory
Indicate whether the statement is true or false
A ray of light strikes a thick sheet of glass (n = 1.5) at an angle of 46° with the normal. Find the angle of the refracted ray within the glass with respect to the normal
a. 25° c. 29° b. 56° d. 16°