1.
Physics
A bulb has an illuminance of 2lx, what is it's luminous flux in a distance of 5m?
2.
Math
For what value of (a) will the function $f(x)$ be continuous at $x=4$, $f(x)=\left\{\begin{matrix} \frac{x^2-16}{x-4} &,x\neq 4 \\ a &, x=4 \end{matrix}\right.$ is:
3.
Biology
Which one of the following is a simple sugar?
4.
Biology
Which of these groups of animals is most likely to be capable of solving complex problems?
5.
Physics
A 100n horizontal force is applied on a 20kg body and moved it with the same direction of the force, the gained acceleration of the body in $m/s^2$ is ....
6.
Chemistry
The oxidation number of chromium in $K_2CrO_4$ is...
7.
Math
What is the common difference of the arithmetic sequence in which its 5th term is 16, and its first term = -8
9.
Math
If $2+\frac{1}{x}=4$, then the value of $x$ is:
10.
Biology
For the DNA strand 5'-A-C-C-G-T-G-A-C-A-T-T-G-3', the correct compliment DNA would be
11.
Math
Find the exact value of $\cos 135^{\circ}$ ?
12.
Math
How many ways can a person enter a mosque which has five doors and exit from a different door?
13.
Chemistry
The percent by mass of a solution containing 5g of dissolved solute in 50g of water...
14.
Chemistry
When the electronegativity difference between the two atoms is zero, then the compound is....
15.
Math
Find the scalar (inner) product of the two vectors v, u if $v=$❮$-5, 1$❯$\ , \ u=$❮$3, -2$❯?
16.
Physics
When an ultraviolet radiation falls on a negative charged zinc board, it ejects an electron from zinc because...
17.
Physics
When connecting two resistors, R1, R2, in series, you can calculate the current using which formula
18.
Physics
What is the induced electromotive force produced from the movement of 1m wire at a speed of 4m/s perpendicular to a magnetic field of strength 0.5T?
19.
Biology
Substances that make up the CDK cycloenzyme group that control the stages of the cell cycle
20.
Physics
A spring was vibrated 60 times fully in 20s, what is its frequency in Hz?
21.
Physics
The power of an electric motor with work of 30000J during 30s ....
22.
Chemistry
if $[H^+] < [OH^-]$ then the solution is
23.
Math
If $\triangle JLM \sim \triangle QST$ find the value of $x$?
24.
Physics
The relation between a concave mirror's center of curvature C and the focal distance F is ....
25.
Biology
What four features do all chordates share at some point during development?
26.
Math
Find the value of the function $f(x) = 2x^2-8$ at $x=-1$
27.
Chemistry
What are the two last electronic configuration notation in the element silver $\text{Ag}_{47}$?
Knowing that $\text{Kr}_{36}$
28.
Math
Which of the following numbers doesn't belong to the domain of the function $f(x)=\sqrt{4-2x}$
29.
Math
A set of data is distributed naturally with arithmetic mean equals 12 and standard deviation2, then what is the percentage of $p(10\leq x \leq 16)$ ?
30.
Math
The inverse function of $f(x)=18-3x$ is:
31.
Biology
A Protein that makes up the hair, nails, and animals horns
32.
Biology
In what era did the dinosaurs become extinct?
33.
Biology
Algae are similar to plants because they have ..
34.
Math
The image of the point (-1, 3) by reflection on line $y=x$ is:
35.
Chemistry
What's the result of the acetone reduction?
36.
Biology
Which of the following is a disaccharide?
37.
Physics
The heat absorbed or released from an object does not depend on its ...
38.
Biology
The cancer drug vinblastine interferes with cancer by preventing.
39.
Biology
What is the name of the structure shown in the picture?
40.
Math
In the opposite figure: what is the value of x?
41.
Biology
Which of the following statement is true about mutations?
42.
Chemistry
The name of the compound in the following shape ...
43.
Chemistry
Which of the following compounds is an Alkane....
44.
Biology
The danger of AIDS is that…
45.
Biology
Compared with the fish living in the conditions shown in the figure, panel A, the fish living in the conditions shown in panel B are likely to experience
46.
Physics
Based on the following figure: find the electric potential difference between the two plates.
47.
Math
The center of the ellipse whose equation $\frac{(x+2)^2}{36}+\frac{(y-5)^2}{9}=1$ ; the point
48.
Chemistry
What's the type of reacting shown?
$\text{CH}_3-\text{CH}_3\rightarrow \text{CH}_2=\text{CH}_2$
49.
Chemistry
Which of the following sublevels is not in an atom?
50.
Physics
a transformer that its number of turns in primary coil is 200 turns, and 4000turns in secondary coil. if it was supplied with a potential (or effective) difference of 6V calculate the secondary potential difference....
51.
Chemistry
The type of reaction in $\text{C}_2\text{H}_6+\text{Cl}_2\rightarrow C_2H_5Cl$ is ...
52.
Physics
As the velocity of fluid flow increases, the pressure exerted by that fluid....
53.
Math
Find the equation of the straight line with slope 4 and passes through the point (-3, -6)?
54.
Physics
If the specific heat of zinc is $388j/kg^{\circ}C$ then 97j of heat is enough to ....
55.
Biology
What is the role of cyclic proteins in the cell?
56.
Chemistry
how many moles does a 66g of $\text{CO}_2$ has? knowing that C=12, O=16, H=1 ....
57.
Math
If $x$ varies inversely with $y$, and $x=24$ when $y=4$ then find the value of $x$ when $y=12$
58.
Biology
Rather than exploring an animal's intelligence, scientists interested in mental skill focus on the animal's
59.
Chemistry
The vapor pressure effect on 1 mol NaCl is lower than the vapor pressure effect on.....
60.
Biology
What contributes to the transport of substances across the cell membrane
61.
Chemistry
What is the order of the following chemical reaction? $R=k[A]^1 \cdot [B]^2$
62.
Math
Find the value of b if: $3-2bi=3+8i$
63.
Physics
The speed of sound in the air depends on ....
64.
Math
The disc is divided into 8 equal sectors, what is the probability of spinning an odd number?
65.
Physics
Which of the following is a vector quantity?
66.
Biology
Malaria is caused by the parasitic protist
67.
Math
Find the value of the integration $\int_{1}^{4} 2x \ dx$?
69.
Math
If $\log_x32=5$, then the value of x equals:
71.
Physics
A racing car increases its velocity (speed) from 4m/s into 36m/s in a time interval = 4s the acceleration of the car in $m/s^2$ unit equals?
73.
Chemistry
Which of the following does not have a hydrogen bond?
74.
Biology
The two main groups of flowering plants based on seed type are
75.
Chemistry
Elements in their standard state have a $\Delta H^{\circ}_f$ of ....
76.
Biology
Which is considered a general or nonspecific immunity in the body?
77.
Math
If the probability of the occurrence of event $A$ is 42%, then the probability of non occurring the event $A$ equals:
78.
Math
Find the value: $\lim_{x\rightarrow 4} \frac{x^2-16}{x-4}$ ?
79.
Chemistry
Which of the following increases in size when transformed form liquid to solid?
80.
Biology
An organelle that finalizes and packages proteins after they are produced in the ribosomes
81.
Biology
The key difference between animal-like protists and animals is that animal-like protists are
82.
Math
In the opposite figure; the value of $x$ equals:
83.
Math
Determine the type of the Function $f(x)=2x-x^4$?
84.
Biology
Sea stars feed by .........
85.
Math
The component form of the vector V where $|v|=8 \ \ \ , \ \ \ \theta =45^{\circ}$ is:
86.
Math
In the opposite figure; the measure of angle $\theta$ equals
87.
Physics
The precision of the measurement of an instrument is ...
88.
Math
The parabola whose equation $x^2=8(y-4)$ is opened to:
89.
Math
The opposite figure shows number of students successfully passing each subject. the number of students who did not succeed in chemistry equals:
90.
Biology
The portion of the DNA molecule that can vary is its
91.
Biology
Location of sperm maturation and storage:
92.
Biology
Which of the following energy transformations occurs only in autotrophic organisms?
93.
Math
The positive geometric mean of the two numbers 12, 3 equals:
94.
Biology
What is a fruit in biological terms?
95.
Biology
Where do light dependent reactions occur during photosynthesis?
96.
Math
If $\triangle ABC$ is isosceles, find the length of side $BC$?
97.
Biology
During glycolysis the number of ATP molecules used and produced are
98.
Physics
The energy of a photon is ...
99.
Math
What is the derivative of the function $f(x)=\sqrt{7}$
100.
Chemistry
The name of the compound in the following shape ....
101.
Chemistry
Which of the following is an oxidation reaction?
102.
Chemistry
A neutral solution contains two equal concentrations of hydrogen ions and ....
103.
Biology
Two adaptations that have helped all flowering plants succeed are
104.
Math
Find the number of sides for a regular polygon, if the measure of its exterior angle equals $30^{\circ}$
105.
Physics
A person pushed a box with a mass of 40kg for a distance of 10m with a constant speed on a horizontal surface its kinetic energy coefficient is $\mu = 0.1$, calculate the work of friction in $J$. (assume that the acceleration of gravity $g=10m/s^2$)
106.
Biology
It Supports the cell, maintains its shape, and stabilizes the organelles in the cell ....
107.
Math
in the trapezoid $DEGH: x, y$ are midpoints of its legs, find $DE$?
108.
Chemistry
$2\text{Na(s)}+\text{Cl}_2\rightarrow \text{2NaCl(s)}...$
109.
Biology
Fertilization in reptiles ...
110.
Physics
A positive charge of $5\mu C$ is put 30cm from a negative charge of $-4\mu C$, What is the magnitude of the force between them? ($K=9\times 10^9 N.m^2/C^2$)
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