Maths Group11
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The main purposes of this channel are to:
1. πŸ“ Provide various Mathematics questions and exercises.
2. πŸ“š Share and publish different educational books.
3. πŸ“– Provide useful short notes and study materials.

For more, contact us through: @Fikiru_Asnake
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I_______________ to that hotel so many times although I always get disappointed with their service.
Anonymous Quiz
21%
like being
9%
was
43%
have been
27%
had been
They had to get together at six in the morning and when we got up at 5:45 a.m, we thought we wouldn't make it. However, we ___________ to get there before they left.
Anonymous Quiz
45%
were able
23%
are able
23%
could be able
9%
must be able
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Let me go and check if the car is ready. It _________ when I came this morning.
Anonymous Quiz
12%
intended to be fixed
30%
might be fixed
23%
will have to be fixed
35%
was being fixed
Match the following with their derivative.
A B
1. 13xΒ² a. 26x
2. 3x⁴ b. 24x²
3. 2xΒ² c. 12xΒ³
4. 8x³ d. 125x⁴
5. 25x⁡ e. 4x

Write your answer under the comment! πŸ™
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A ball of mass m1 and velocity v1i undergoes an elastic head-on collision with a second ball of mass m2 which is initially at rest. Then m1 rebounds with a speed v1f=βˆ’ 0.5v1i. What is the value of m1 in terms of m2?
Anonymous Quiz
10%
m1 = 6m2
48%
m1 = 0.33m2
39%
m1 = -0.33m2
3%
m1 = -6m2
The kinetic energy of an object is increased by a factor of 16. By what factor is the magnitude of its momentum changed?
Anonymous Quiz
35%
4
30%
8
30%
32
5%
2
Biology some questions for grade 11 about the muscle and skeletal system:
I. Choose the best answer from the given alternative.
1. Which type of muscle is responsible for involuntary movements such as digestion and heartbeat?
   a) Skeletal muscle
   b) Smooth muscle
   c) Cardiac muscle
   d) Striated muscle

2. What is the primary function of the skeletal system?
   a) Protection
   b) Movement
   c) Support
   d) All of the above

3. Which of the following is not a function of the muscular system?
   a) Producing heat
   b) Maintaining posture
   c) Storing minerals
   d) Generating movement

4. Which connective tissue attaches muscle to bone?
   a) Tendon
   b) Ligament
   c) Cartilage
   d) Fascia

5. What is the basic functional unit of a skeletal muscle called?
   a) Myofibril
   b) Sarcomere
   c) Myosin
   d) Actin

6. Which hormone stimulates muscle growth and protein synthesis?
   a) Estrogen
   b) Testosterone
   c) Insulin
   d) Thyroxine

7. Which of the following is not a type of muscle contraction?
   a) Isometric
   b) Concentric
   c) Eccentric
   d) Isotonic

8. Which type of joint allows for the greatest range of motion?
   a) Ball and socket joint
   b) Hinge joint
   c) Pivot joint
   d) Gliding joint

9. Which mineral is essential for muscle contraction and relaxation?
   a) Sodium
   b) Potassium
   c) Calcium
   d) Magnesium

10. What is the function of the synovial fluid in joints?
    a) Lubrication and nourishment of the joint
    b) Protection from bacterial infection
    c) Promotion of blood clotting
    d) Regulation of body temperature

Do everyone the above questions! Good luck!
❀5
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! 
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πŸ‘‰ Physics important formulas.

πŸ‘‰ Bernoulli's equation:

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

Where p= density

πŸ‘‰ Equation of continuity:

A1V1=A2V2

πŸ‘‰ Tensile stress= F/A

πŸ‘‰ Tensile strain= βˆ†X/L

πŸ‘‰Young's nodulus=Tensile stress/Tensile strain or

E=FL/AX

πŸ‘‰Area of circle

A= Ο€r2 or Ο€d^2/4

πŸ‘‰ Pressure= F/A or pgh
Where p= density

πŸ‘‰ Pascal's principle.
P1=P2 or
F1/A1=F2/A2

πŸ‘‰Flow rate= Volume/time or Area *Velocity

πŸ‘‰ Specific heat capacity(c)=heat capacity/mass or

c=E/mβˆ†T
Forwarded from TikTok Analytics
πŸŽ‰πŸŽ‰ 2018 αˆˆα‰°αˆ›αˆͺα‹Žα‰½ αŠ αˆ΅αˆαˆ‹αŒŠ αˆαˆ‹α‰Έα‹ α‰»αŠ“αˆŽα‰½ αŠ“α‰Έα‹ α‰ α‹šαˆ… αˆŠαŠ•αŠ­ αŠ αˆαŠ‘αŠ• α‰°α‰€αˆ‹α‰€αˆ‰

πŸ‘‡πŸ‘‡βœ…
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Who discovered the word atoms at the frist time?
Anonymous Quiz
15%
John Dalton
18%
Aristotle
62%
Democritus
4%
J.J. Thomson
The charge of electron was determined by using the oil drop experiment. It was determined by:
Anonymous Quiz
62%
Robert Millikan
22%
J.J. Thomson
12%
Ernest Rutherford
4%
James Chadwick
Which one of the following radioactive radiation consists of high-energy rays?
Anonymous Quiz
16%
Alpha rays
6%
Beta rays
76%
Gamma rays
2%
Beta particles
The number of electron in the atom always equal to atomic number.
Anonymous Quiz
35%
True
65%
False
The metal thallium occurs naturally as 30% thallium-203 and 70% thallium-205. What is the average atomic mass of thallium?
Anonymous Quiz
9%
204.8 a.m.u
36%
204.7 a.m.u
46%
204.4 a.m.u
9%
204.3 a.m.u
The number of neutrons in the nucleus of an iron atom is: (A = 56, Z = 26)
Anonymous Quiz
14%
82
6%
56
70%
30
10%
26
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