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Lesson 1 Quiz: Oscillatory Motion and Wave Mechanics

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1.
The chemical formula of aluminum sulfate is correctly written as:
Al3(SO4)2
AlSO4
Al2(SO4)3
Al(SO4)3
2.
The slope of the tangent to the curve y = (x + 1)/(x - 1) at x = 2 is:
-1
3
2
-2
3.
Rotational cytoplasmic movement inside living plant cells (such as Elodea plants) is indicated by:
Movement of chloroplasts immersed in the cytoplasm stream in a constant rotational direction
Mitochondrial division
Change in cell wall thickness
Stomata open
4.
If y = (2x + 1) * (3x - 4), then dy/dx evaluated at x = 1 equals:
12
-5
7
1
5.
In a titration experiment, 20.0 mL of 0.15 M H2SO4 is completely neutralized by 30.0 mL of NaOH solution. The molar concentration of the NaOH solution is:
0.10 M
0.20 M
0.05 M
0.30 M
6.
If a vibrating body executes 120 oscillations in 2 seconds, its frequency and periodic time are:
30 Hz and 0.033 s
60 Hz and 60 s
120 Hz and 0.5 s
60 Hz and 0.0167 s
7.
The movement of tension in the tendrils of climbing plants such as peas and grapes depends physiologically on:
Secretion of gluey substances
Degeneration of tendril cells
Water loss through rapid transpiration
Slow growth of the area in contact with the support and rapid growth of the area far from it as a result of the varying distribution of auxins
8.
Potters use high-temperature ovens called ________ to bake and harden clay vessels.
blenders
looms
kilns
fridges
9.
A person who skillfully makes beautiful objects by hand is called a/an ________.
engineer
pilot
scientist
artisan
10.
In a U-tube manometer containing two immiscible liquids in equilibrium, the heights of the liquid columns measured above the separating surface are:
Inversely proportional to their respective densities (h1 / h2 = rho2 / rho1)
Equal regardless of the liquids used
Proportional to the square of the cross-sectional area of the tube
Directly proportional to their densities
11.
If y = sin(3x) + cos(2x), then dy/dx at x = 0 equals:
5
-2
3
1
12.
The sum to infinity (S_infinity) of a geometric series exists and converges if and only if the common ratio satisfies:
r > 1
|r| >= 2
|r| < 1 (i.e. -1 < r < 1), and S_infinity = a / (1 - r)
r = 1
13.
The number of hydrogen bonds between the nitrogenous base pair guanine and cytosine (G - C) is:
3 Hydrogen bonds
One bond
4 Links
Two hydrogen bonds
14.
A metallic cube of side length 10 cm and density 7800 kg/m3 is completely submerged in water (density 1000 kg/m3). The buoyant force (upthrust) acting on the cube is (g = 10 m/s2):
10 N
68 N
100 N
78 N
15.
The number of terms in the finite arithmetic sequence (5, 9, 13, ..., 81) is:
19 terms
25 terms
20 terms
21 terms
16.
The mechanical advantage (eta) of an ideal hydraulic press equals all of the following ratios EXCEPT:
Distance moved by the small piston / Distance moved by the large piston (y1 / y2)
Work done by the large piston / Work done on the small piston > 1
Force on the large piston / Force on the small piston (F / f)
Area of the large piston / Area of the small piston (A / a)
17.
The ion directly responsible for the explosion of synaptic vesicles and the release of acetylcholine in the neuromuscular synapse cleft is:
Potassium ion K+
Chloride ion Cl−
Calcium ion Ca2+
Sodium ion Na+
18.
The slope of the tangent line to the curve y = x2 - 6 x + 5 at the point (4, -3) equals:
m = 2
m = 8
m = -3
m = -2
19.
The sum to infinity of the geometric series 12 + 6 + 3 + 1.5 + ... equals:
24
Infinity
36
18
20.
If a, b, c form an arithmetic sequence, then the arithmetic mean b equals:
b = 2 a c / (a + c)
b = sqrt(a * c)
b = (a + c) / 2
b = a + c
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