Numerade

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When will a shortage occur in a market? [Note: There may be more than one correct answer. This question will show a checkbox next to each statement. Please check all statements that apply.] When the quantity that consumers are willing and able to purchase decreases When the actual price is lower than the equilibrium price When the quantity that producers are willing and able to produce and sell increases When quantity demanded is greater than the quantity supplied When the actual price is above the equilibrium price

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A balloon contains 0.158 mol of gas and has a volume of 2.47 L .If an additional 0.166 mol of gas is added to the balloon (at the same temperature and pressure), what will its final volume be?

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Which of the following could cause aggregate demand to decrease? Group of answer choices The government reduces taxes. Foreigners decide they want to buy more domestic goods at every price. Consumers decide to increase their savings. The Federal Reserve increases the money supply.

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Liquid nitrogen is the liquid form of the diatomic nitrogen gas. We place 50 grams of liquid nitrogen in a rigid, 2-liter container at 77.3K (that’s the boiling point for liquid nitrogen). We then add 20 kJ of heat to the liquid nitrogen. The resulting gas is then allowed to expand at constant pressure to a volume of 5 liters. How much work does the gas do while expanding? Note that nitrogen gas has a molar mass of 28 g/mol and its latent heat of vaporization is 200 kJ/kg. Also assume that the container is empty except for the nitrogen.

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QUESTION 6 6.1 Distinguish between a deforming force and restoring force. (4) 6.2 A concrete pole that is $ 250 \mathrm{~mm} $ long with a diameter of $ 80 \mathrm{~mm} $ is supporting a load of weight of $ 1925 \mathrm{~N} $ as in the diagram below. The modulus of elasticity is equal to $ 190 \mathrm{GPa} $. Weight $ =1925 \mathrm{~N} $ Weight $ =1925 \mathrm{~N} \quad $ LOAD 6.2.1 Define strain. Calculate the: 6.2.2 Stress of the pole 6.2.3 Change in the length of the pole 6.3 Study the stress-strain graph below. Stress (2) (3) (5) 6.3.1 Name the law that is illustrated in the graph. (1) 6.3.2 What does the gradient of the graph represent (1) 6.3.3 Give a reason why the graph does not continue as a straight line after (2) point $ P $. 6.4 A hydraulic system is used to lift a $ 2000 \mathrm{~kg} $ vehicle in a garage. The vehicle sots on a piston with an area of $ 0.4 \mathrm{~m}^{2} $. (2) 6.4.1 State Pascal's principle in words. (1) 6.4.2 Complete the following: 1 bar $ = $ $ \mathrm{Pa} $ 6.4.3 Calculate the minimum force that must be applied on the input piston with [24]

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Question 4 3 pts What would be the appropriate process to determine the pH of the following diprotic acid? Hint: successive ionizations can be ignored when $\frac{K_{a1}}{K_{a2}}$ (or $\frac{K_{a2}}{K_{a3}}$) is greater than 1000. What is the pH of a 0.10 M aqueous solution of carbonic acid, H$_2$CO$_3$? Use an ice table for the ionization of only the first acidic hydrogen. use - log of 0.10 Prepare an ice table for each ionization to determine the concentration of H

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Distinguish between endemic and epidemic diseases, while also providing examples in the context of South Africa

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Question 7 (2 points) Saved The least amount of brain tissue in the sensory cortex is dedicated to the _____ eyes knees lips Question 8 (2 points) To counter the replication crisis scientists need to change their norms and be better

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A new, simple test has been developed to detect a particular type of cancer. The test must be evaluated before it is put into use. A medical researcher selects a random sample of 2,000 adults and finds (by other means) that 2% have this type of cancer. Each of the 2,000 adults is given the test, and it is found that the test indicates cancer in 99% of those who have it and in 1% of those who do not. Based on these results, what is the probability of a randomly chosen person having cancer given that the test indicates cancer? Of a person having cancer given that the test does not indicate cancer? Based on these results, what is the probability of a randomly chosen person having cancer given that the test indicates cancer? (Round to three decimal places as needed.)

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Q5 (a) Justify the importance of the Telecommunication System and figure out the general telecommunication network architecture inclusive of the main sub-systems. (10 marks)

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tina b.