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When a body exerts a force on a second body, the second body exerts a force on the frist body which is equal in magnitude but opposite in direction. This law is known as _______________?
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What is the core electron configuration of calcium (Ca) metal? Z = 20.
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What is the electron configuration for magnesium(Mg) metal? Z = 12
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In Niels Bohr's model of the atom, electrons are said to occupy specific energy levels or orbits around the nucleus. What is the primary feature of these orbits?
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The number of neutrons in the nucleus of an iron atom is: (A = 56, Z = 26)
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The metal thallium occurs naturally as 30% thallium-203 and 70% thallium-205. What is the average atomic mass of thallium?
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Which one of the following radioactive radiation consists of high-energy rays?
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The charge of electron was determined by using the oil drop experiment. It was determined by:
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π Physics important formulas.
π Bernoulli's equation:
P/p +gh+V^2/2=constant
Where p= density
π Equation of continuity:
A1V1=A2V2
π Tensile stress= F/A
π Tensile strain= βX/L
πYoung's nodulus=Tensile stress/Tensile strain or
E=FL/AX
πArea of circle
A= Οr2 or Οd^2/4
π Pressure= F/A or pgh
Where p= density
π Pascal's principle.
P1=P2 or
F1/A1=F2/A2
πFlow rate= Volume/time or Area *Velocity
π Specific heat capacity(c)=heat capacity/mass or
c=E/mβT
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A sample of gas at 15 Β°C and 1 atm has a volume of 2.58 L. What volume will this gas occupy at 38 Β°C and 1 atm?
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Which one of the following matter has definite shape and definite volume?
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Match the following with their derivative.
A B
1. 13xΒ² a. 26x
2. 3xβ΄ b. 24xΒ²
3. 2xΒ² c. 12xΒ³
4. 8xΒ³ d. 125xβ΄
5. 25xβ΅ e. 4x
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