Physics, 01.07.2020 16:01 Ayyyyeeeeeeewuzgud
Q1. i. In what two ways combustion can be useful to us? Explain by giving examples. ii. Explain why decomposition of sugar on heating is an irreversible change. Q2. In order to answer this question you need to look around your immediate surroundings to find examples of rusting of iron or any other metal. i. What makes iron rust? ii. Why is the rusting of iron a problem? Give any 3 examples from daily life where rusting has been a disadvantage. iii. Suggest any two ways that can help prevent rusting of iron. Q3. i. Give two differences between a physical change and a chemical change. ii. Explain whether condensation of water vapour is a physical or a chemical change. iii. Write word equations for the following reactions: a. Breaking down/ electrolysis of water b. synthesis of water c. decomposition of sugar d. photosynthesis in plants
Answers: 1
Physics, 21.06.2019 13:40
Niobium forms a substitutional solid solution with vanadium. compute the number of niobium atoms per cubic centimeter for a niobium-vanadium alloy that contains 24 wt% nb and 76 wt% v. the densities of pure niobium and vanadium are 8.57 and 6.10 g/cm3, respectively
Answers: 1
Physics, 21.06.2019 17:10
What is the radius of the circular path ofa charged particle in a magnetic field?
Answers: 1
Physics, 21.06.2019 21:50
Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit
Answers: 2
Physics, 22.06.2019 10:30
Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?
Answers: 1
Q1. i. In what two ways combustion can be useful to us? Explain by giving examples. ii. Explain why...
Mathematics, 28.07.2019 20:30
Mathematics, 28.07.2019 20:30
Biology, 28.07.2019 20:30
History, 28.07.2019 20:30
Biology, 28.07.2019 20:30
English, 28.07.2019 20:30
History, 28.07.2019 20:30