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joseph smith

joseph s.

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Two 20.0 g ice cubes at -19.0 °C are placed into 275 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature, $T_f$, of the water after all the ice melts. heat capacity of $H_2O(s)$ 37.7 J/(mol·K) heat capacity of $H_2O(l)$ 75.3 J/(mol·K) enthalpy of fusion of $H_2O$ 6.01 kJ/mol $T_f$ = __ °C

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you start with a 8.0kg block of ice taken from a freezer at -9 degrees celsius and place into a large open pot, and immediately start heating it. You add 9000kJ of heat energy to it and assuming all the heat energy goes into the ice, what should you find in the pot after this much energy is added? describe your answer in terms of the mass of each state of the water you would find, it temperature, and assume that any steam, if produced, is lost to the it, and that no phase changes begin until all the mass of one phase reaches the correct temperature to start any phase change. - Cice = 2093 J/kg x K c - Lf = 33.5 x 10^4 J/kg - Cwater = 4186 J/Kg x k -Lv = 22.6 x 10^5 J/Kg - Csteam = 2097 J/Kg K

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An employee travels out of the country for work but still needs to access the company's shared drive. What would the information technology department need to set up on that employee's computer to connect to the shared drive outside the office? A. Mandatory access control B. Virtual private network C. Discretionary access control D. Multifactor authentication

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Suppose Pacman knows there is at least one bus stop adjacent to the university. Which of the following are admissible heuristics? Select all that apply.

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Involves repeated tests for differences between the desired outcome and what currently exists. Multiple Choice Forming subgoals Means-ends analysis Insight Trial and error

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Which of the following is true of the supply and demand curves for the labor market? The supply curve slopes downward and the demand curve slopes upward. The supply curve slopes upward and the demand curve slopes downward. Both the supply curve and the demand curve slope upward. Both the supply curve and the demand curve slope downward. Both the supply curve and the demand curve are horizontal.

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What is the purpose of the cyclically adjusted budget? To adjust budget deficits and surpluses for changes in government spending and tax revenues due to GDP fluctuations.

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Businesses can use Gartner Hype Cycle for decision-making on technologies, but it won't be as accurate as using in conjunction with other research and analysis. False - the Hype Cycle is its own model and can't be combined with other tools. True

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a student takes a 20 question multiple choice exam with five choices for each question and guesses on each question. find the probability of guessing at least 14 out of 20 correctly

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Find the integral $\int \frac{1}{\sqrt{7 - x}} dx$. Check your answer by differentiation. $\int \frac{1}{\sqrt{7 - x}} dx = $ ______ $+ C$

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