# Dreamjob45 – Important physical quantities & relations, Mathematics Formulas and Short biology Questions.

• Home Knowledge Dreamjob45 – Important physical quantities & relations, Mathematics Formulas and Short biology Questions.

## * Physical amount Physical quantities relation to other physical quantities *

1. Area = Length × Width

2. Volume = Length × Width × Height

3. Mass  Mass / Income

4. Frequency = 1 / Periodic

5. Velocity = Displacement / Time

6.  Speed = ​​Distance / Time

7. Acceleration = Velocity / Time

8. Force = mass × acceleration

9. Impulse = Force × Time

10. Work = Force × Distance

11. Energy = Force × Distance

12. Power = Work / Time

13. Momentum = mass × velocity

14. Pressure  Area

15. Stress = force / area

16. Changes in Deformation = Strain Vimas / Original Vimas

17. Elasticity  = Coefficient of elasticity stress / deformation

18. Page tension = force / length

19. Surface tension = Energy / Area

20. Velocity gradient = velocity/ distance

21. Pressure gradient =pressure / distance

22. Viscosity coefficient Coefficient of viscosity force / (area × velocity slope)

23. Angle = Arc / Radius

24. Trigonometric Ratio = length / length

25. Angular velocity = Angle / time

26. Angular acceleration = angular velocity / time

27. Angular momentum = Inertial moment × angular velocity

28. Inertia moment = mass × (revolutions radius) 2

29. Force = Torque Force × Distance

30. Angular frequency = 2π × frequency

31. Gravitational universal /constant universal constant of gravity =of force × (distance) 2 / (mass) 2

32. Plank constant = energy / frequency

33. Specific heat = Thermal energy / (mass × heat)

34. Heat Capacity = Thermal Energy / Heating

35. Boltzmann constant = energy / heat

36. Stefan constant = (energy / area × time) / (heat) 4

37. Gas constant = (pressure × volume) / (mole × heat)

38. Charge = electric current × time

39. Differential Potential difference

40. Resistance = Differential / Electric Current

41. Capacity = Charge / Differential

42. Electric field = Electrical force / charge

43. Magnetic field = force / (electric current × length)

44. Magnetic flux = magnetic field × length

45. Inductance Inductance = Magnetic Flux / Electric Current

46. ​​Vein constant = wavelength × heat

47. Conductivity = 1 / Resistance

48. Entropy = Thermal Energy / Heating

49. Secret heat = thermal energy / mass

50. Thermal Diffusion = cofficient of thermal expansion.

51.  Volume elasticity coefficient Bulk modulus (change in volume × pressure) / change in volume

52. Electrical resistance = (resistance × area) / length

53. Electric dipole moment Electric dipole moment force torque / electric field

54. Magnetic dipole moment Magnetic dipole moment force momentary / magnetic field

55. Magnetic field = strength magnetic moment / volume

56. Refractive index = Movement of light in vacuum / Speed ​​of light in medium

57. Wave number = 2π / wavelength

58. Radiation power = Emitted energy / time

60. Hubble constant = backward array speed / distance

## Important Mathematics Formulas –

1. (α + в) ² = α² + 2αв + в²
2. (α + в) ² = (α-в) ² + 4αв
3. (α-в) ² = α²-2αв + в²
4. (α-в) ² = (α + в) ²-4αв
5. α² + в² = (α + в) ² – 2αв.
6. α² + в² = (α-в) ² + 2αв.
7. α²-в² = (α + в) (α – в)
8. 2 (α² + в²) = (α + в) ² + (α – в) ²
9. 4αв = (α + в) ² – (α-в) ²
10. αв = {(α + в) / 2} ² – {(α-в) / 2} ²
11. (α + в + ¢) ² = α² + в² + ¢ ² + 2 (αв + в ¢ + ¢ α)
12. (α + в) ³ = α³ + 3α²в + 3αв² + в³
13. (α + в) ³ = α³ + в³ + 3αв (α + в)
14. (α-в) ³ = α³-3α²в + 3αв²-в³
15. α³ + в³ = (α + в) (α² -αв + в²)
16. α³ + в³ = (α + в) ³ -3αв (α + в)
17. α³ –в³ = (α –в) (α² + αв + в²)
18. α³ -в³ = (α-в) ³ + 3αв (α-в)
ѕιη0 ° = 0
ѕιη30 ° = 1/2
ѕιη45 ° = 1 / √2
ѕιη60 ° = √3 / 2
ѕιη90 ° = 1
¢ σѕ ιѕ σρρσѕιтє σƒ ѕιη
тαη0 ° = 0
тαη30 ° = 1 / √3
тαη45 ° = 1
тαη60 ° = √3
тαη90 ° = ∞
¢ σт ιѕ σρρσѕιтє σƒ тαη
ѕє ¢ 0 ° = 1
ѕє ¢ 30 ° = 2 / √3
ѕє ¢ 45 ° = √2
ѕє ¢ 60 ° = 2
ѕє ¢ 90 ° = ∞
¢ σѕє ¢ ιѕ σρρσѕιтє σƒ ѕє ¢
2ѕιηα ¢ σѕв = ѕιη (α + в) + ѕιη (α-в)
2 ¢ σѕαѕιηв = ѕιη (α + в) -ѕιη (α-в)
2 ¢ σѕα ¢ σѕв = ¢ σѕ (α + в) + ¢ σѕ (α-в)
2ѕιηαѕιηв = ¢ σѕ (α-в) – ¢ σѕ (α + в)
ѕιη (α + в) = ѕιηα ¢ σѕв + ¢ σѕα ѕιηв.
»¢ σѕ (α + в) = ¢ σѕα ¢ σѕв – ѕιηα ѕιηв.
»Ѕιη (α-в) = ѕιηα ¢ σѕв- ¢ σѕαѕιηв.
»¢ σѕ (α-в) = ¢ σѕα ¢ σѕв + ѕιηαѕιηв.
»Тαη (α + в) = (тαηα + тαηв) / (1 − тαηαтαηв)
»Тαη (α − в) = (тαηα – тαηв) / (1+ тαηαтαηв)
»¢ σт (α + в) = (¢ σтα ¢ σтв −1) / (¢ σтα + ¢ σтв)
»¢ σт (α − в) = (¢ σтα ¢ σтв + 1) / (¢ σтв− ¢ σтα)
»Ѕιη (α + в) = ѕιηα ¢ σѕв + ¢ σѕα ѕιηв.
»¢ σѕ (α + в) = ¢ σѕα ¢ σѕв + ѕιηα ѕιηв.
»Ѕιη (α-в) = ѕιηα ¢ σѕв- ¢ σѕαѕιηв.
»¢ σѕ (α-в) = ¢ σѕα ¢ σѕв + ѕιηαѕιηв.
»Тαη (α + в) = (тαηα + тαηв) / (1 − тαηαтαηв)
»Тαη (α − в) = (тαηα – тαηв) / (1+ тαηαтαηв)
»¢ σт (α + в) = (¢ σтα ¢ σтв −1) / (¢ σтα + ¢ σтв)
»¢ σт (α − в) = (¢ σтα ¢ σтв + 1) / (¢ σтв− ¢ σтα)
α / ѕιηα = в / ѕιηв = ¢ / ѕιη ¢ = 2я
»Α = в ¢ σѕ ¢ + ¢ ¢ σѕв
»В = α ¢ σѕ ¢ + ¢ ¢ σѕα
»¢ = α ¢ σѕв + в ¢ σѕα
»¢ σѕα = (в² + ¢ ²− α²) / 2в ¢
»¢ σѕв = (¢ ² + α²− в²) / 2 ¢ α
»¢ σѕ ¢ = (α² + в²− ¢ ²) / 2 ¢ α
»Δ = αв ¢ / 4я
»ЅιηΘ = 0 тнєη, Θ = ηΠ
»ЅιηΘ = 1 тнєη, Θ = (4η + 1) Π / 2
»ЅιηΘ = −1 тнєη, Θ = (4η− 1) Π / 2
»ЅιηΘ = ѕιηα тнєη, Θ = ηΠ (−1) ^ ηα

1. ѕιη2α = 2ѕιηα ¢ σѕα
2. ¢ σѕ2α = ¢ σѕ²α – ѕιη²α
3. ¢ σѕ2α = 2 ¢ σѕ²α – 1
4. ¢ σѕ2α = 1 – ѕιη²α
5. 2ѕιη²α = 1 – ¢ σѕ2α
6. 1 + ѕιη2α = (ѕιηα + ¢ σѕα) ²
7. 1 – ѕιη2α = (ѕιηα – ¢ σѕα) ²
8. тαη2α = 2тαηα / (1 – тαη²α)
9. ѕιη2α = 2тαηα / (1 + тαη²α)
10. ¢ σѕ2α = (1 – тαη²α) / (1 + тαη²α)
11. 4ѕιη³α = 3ѕιηα – ѕιη3α
12. 4 ¢ σѕ³α = 3 ¢ σѕα + ¢ σѕ3α

»Ѕιη²Θ + ¢ σѕ²Θ = 1
»Ѕє ¢ ²Θ-тαη²Θ = 1
»¢ σѕє ¢ ²Θ- ¢ σт²Θ = 1
»ЅιηΘ = 1 / ¢ σѕє ¢ Θ
»¢ σѕє ¢ Θ = 1 / ѕιηΘ
»¢ σѕΘ = 1 / ѕє ¢ Θ
»Ѕє ¢ Θ = 1 / ¢ σѕΘ
»ТαηΘ = 1 / ¢ σтΘ
»¢ σтΘ = 1 / тαηΘ
»ТαηΘ = ѕιηΘ / ¢ σѕΘ

## Short Biology Questions –

1.: – Which acid accumulates in the muscles leads to exhaustion?
Ans: – Lactic acid

2.: – Which acid is found in grapes?
Ans: – Tartaric acid

3.: – Study of cancer related diseases is called

4.: – Which is the longest cell in human body?
Ans: – Nerve cell

5.: – Teeth are mainly made up of which substance?
Ans: – of dentine

6.: – Which animal has the shape of foot slippers?
Ans: – Parametium

7.: – How many eyes does earthworm have?
Ans: – None.

8.: – Carrot is a rich source of which vitamin?

9.: – Protein is not found in which of the following substances?
Ans: – Rice

10.: – How many grams of human brain is there?

11.: – is a metal found in blood
Ans: – Iron

12.: – Example of fermentation
Ans: – Sourness of milk, formation of food bread, sourness of wet flour.

13.: – Which of the following diet provides nutrients for growth of new tissues in human body?
Ans: – Cheese

14.: – Which of the following is a flying lizard?
Ans: – Draco

15.: – Which is the only snake nest?
Ans: – King Cobra

16.: – Which is the largest fish found in India?

17.: – Pulses are a good source of
Ans: – Protein

18.: – Why does native ghee smell fragrant?
Ans: – Due to diacetyl

19.: – Which color deflection is more in the rainbow?

20.: Who invented television?

21: – Why does a diamond appear shiny?
Ans: – Due to collective internal reflection

22.: – What is found mainly in ‘dung gas’.

23.: – With which machine the purity of milk is measured?
Ans: – Lactometer

24.: – Which is the highest metal element found on Earth?

25.: – Pearl is mainly made up of which substance?
Ans: – Calcium Carbonate

26.: – Which element is found in maximum quantity in human body?
Ans: – Oxygen

27.: – What type of tissues act as the body’s protective shield?
Ans: – Epithelium tissue

28.: – Which animal did man first domesticate?
Ans: – Dog

29.: – Which scientist first melted and melted two pieces of ice?

30.: – Who produces the highest intensity sound?

31.: – When sound waves move, they carry them
Ans: – Energy

32. – Which part of the sun is visible at the time of solar eclipse?
Ans: – Kirit

33. – How many colors are there in the ray of sun?

34. – Who is the inventor of ‘typewriter’?
Ans: – Sholes

35. – What is vinegar called in Latin language.
Ans: – Assetam

36 .: – Used to remove rust spots from clothes
Ans: – Oxalic acid

37 .: – ‘Red rot disease’ in sugarcane is caused due to
Ans: – by fungi

38. – What is the botanical name of mango?