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- A closed water tank has the form of a cuboid with a square base with sides of length x and a height h. The total surface area of the tank is 16000 cm2 Find the value of x which maximises the volume. Give your answer correct to 2 decimal places.PAGE 316 HOMEWORK CHAPTER 12 7. A ring made of gold (atomic weight 196.967) has a mass of 4.00 g. How many gold atoms are in it? Ans. 1.22 x 10226
- Three vectors are given as: A = 3â – 9âỹ B = 7ââ + 10ŷ C = 4⣠+ 5ÿ+ 62 These three vectors are used to define a parallelepiped. (a) What is the volume of the parallelepiped? (b) What is the surface area of the parallelepiped?A box has a volume of 3.5 m3 . The volume of the box, in ft3, is closest to: а) 35 O b) 53 c) 59 d) 41 e) 127T The total surface area, A, of the cylinder can be expressed as A = (a) Find the value of k. (b) Find the value of that makes the total surface area a minimum
- Question 3 We can model a human as a cylinder with a height of 1 m and a radius of 10 cm. Which is the best order of magnitude estimate for the number of cells in a human body? O 10^13 O 10^11 O 10^7 1019 O 10^15(1) A metallic sphere has a density p and a radius r. (a) Using dimensional analysis, derive a formula for the mass of the sphere. (b) Using dimensional analysis, derive a dependence of the sphere radius if its mass and density are known.1. Which of the following is a property of Miller indices? a) They uniquely identify a plane, b) They are always positive, c) They are mentioned. not fractions, d) None of the