ENGLISH SOME QUESTIONS FOR ALL STUDENTS.
CHOOSE THE CORRECT ANSWER!
1. The teacher tried __ the idea but we couldn't understand.
A. explain     B. to explain
C. explains   D. explained
2. I am saving up_ to buy a radio.
A. because     B. although
C. in order        D. so that
3. This room ____ only on special occasions.
A. has used      B. is used
C. uses             D. use
4. He took a day off ___ study for his examination.
A. because       B. for
C. to                  D. while
5. The man ____ is standing next to your brother is a politician.
A. which   B. who   C. whose  D. what
6. Most American families allocate one quarter of their income for housing. Allocate means:
A. earn           C. invest
B. budget       D. generate

Good luck for you! 

👉 Physics important formulas.

👉 Bernoulli's equation:

P/p +gh+V^2/2=constant

Where p= density

👉 Equation of continuity:

A1V1=A2V2

👉 Tensile stress= F/A

👉 Tensile strain= ∆X/L

👉Young's nodulus=Tensile stress/Tensile strain or

E=FL/AX

👉Area of circle

A= πr2 or πd^2/4

👉 Pressure= F/A or pgh
Where p= density

👉 Pascal's principle.
P1=P2 or
F1/A1=F2/A2

👉Flow rate= Volume/time or Area *Velocity

👉 Specific heat capacity(c)=heat capacity/mass or

c=E/m∆T

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