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An elevator is moving up at a constant velocity of 2.50 m/s the man has a mass of 85.0 kg how large is the force exerts on the man
The reaction between solid white phosphorus and oxygen produces solid
tetraphosphorusdecoxide (P4010).
a. Write the balanced chemical equation of the reaction
b. Determine the mass of tetraphosphorusdecoxide (P4010) formed if 26.0 g of
phosphorus (Pd) and 49.5 g of oxygen (O2) are combined.
c. How much of the excess reactant remains after the reaction stops?
When πΌ = 10, π = 2 and π = 5, calculate the value of π in the formula below:
πΌ = π + (π β 1) π
[1] π = 2
[2] π = 3
[3] π =48
[4] π = 8
Simplify the following expression as far as possible: β64π 2 Γ βπ 64 Γ βπ 2 [1] 8p 11 [2] 32p 11 [3] 8p 34 [4] 32p 34
The cost for labour and materials for painting is R60,00 per square metre. How much will it cost to paint a square parking area of sides with length 32 metres. [1] R193 019,45. [2] R1 920,00. [3] R3 840,00. [4] R61 440,00
At the surface of Jupiterβs moon Io the acceleration due to gravity is g=1.81 m/s2 . A watermelon weighs 44.0 N at the surface of the earth. a) What is the mass on the earthβs surface? b) What are its mass and weight on the surface of Io?Β
A cylindrical jug that carries 5 β of water when it is filled to the brim, has a height of 20 ππ.
Determine the diameter of the base surface of the jug (in ππ)? Round off your answer to the nearest
integer.
[1] 9 ππ
[2] 18 ππ
[3] 4 ππ
[4] 80 ποΏ½
Determine the volume of a cube with sides 50 ππ long. Give the answer in ππ3 . [1] 125 ππ3 [2] 125000 ππ3 [3] 12500 ππ3 [4] 150 ππ3
Determine the volume of a cube with sides 50 ππ long. Give the answer in ππ3 . [1] 125 ππ3 [2] 125000 ππ3 [3] 12500 ππ3 [4] 150 ππ3
Determine the volume of a prism with l = 0.15 π, b = 40 ππ and h = 20 ππ. Your answer must be converted to litres, rounded to one decimal digit. [1] 120,0 β [2] 1,2 β [3] 1 200,0 β [4] 12,0 β
