Numerade

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Pentanol and pentanoic acid both have 5 carbons. Are both soluble in water? If not, which (if either) is soluble?

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Find and share a real-world example where the actual forces on an object or structure can be replaced with an equivalent system of forces and explain how they are equivalent.

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What are two economic benefits and two challenges of transitioning to 100% renewable energy?

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The anterior cardinal and common cardinal veins seen in the dogfish and necturus are homologous to what in mammals?

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4 - A retailer that prepares its financial statements in accordance with IFRS has 100 office chairs in its inventory with a suggested retail price of $240 each. It paid on average $200 each to a supplier for these chairs. Demand for office chairs has been low for quite a while and the retailer estimates it can sell those chairs for $180 each if it offers free shipping to its customers at an average cost of $10 per chair. The supplier has also lowered its price to $160 in response to the low demand. The total carrying amount of these 100 office chairs on the retailer’s balance sheet would be closest to: a) $16,000. b) $17,000. c) $18,000.

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we have a relatively a high incidence of polydactyly (extra fingers or toes) in cats. This is caused by a single dominant allele. In one population, 24% of kittens are born with polydactyly. Assuming Hardy-Weinberg Equilibrium, the frequency of the dominant allele in the population is?

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2. A 9-in diameter stainless steel bar is turned on a lathe at 620 rpm and at a depth of cut d = 0.18 in. If the power of the motor is 8 hp and has mechanical efficiency of 75%, what is the maximum feed rate for that spindle speed. (Hint: Use specific energy to calculate MRR. Assume depth of cut doesn't change between the two cutting conditions.)

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Question 2 [20 pts] Let $u(x,t) = X(x)T(t)$. (a) (10 points): Find $u_{xx}$, $u_{xt}$ and $u_t$ (b) (10 points): Determine whether the method of separation of variables can be used to replace the given partial differential equation by a pair of ordinary differential equations. If so, find the equations $20u_{xx} + u_{xt} - 14u_t = 0.$

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Q5) In the network shown in Figure below, find (i) Norton equivalent circuit atterminals AB (ii) the maximum power that can be provided to a resistor R connected between terminals A and B. (10 points) 4 $\Omega$ ww 4$\Omega$ 8 $\Omega$ www A 48 A$\uparrow$ 3 $\Omega$ 2 $\Omega$ B (i) R

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5. It is known that on average there is a nonzero electric field near the earth's surface of ~120 N/C that is pointed downward. How much excess charge, in units of electrons/cm$^2$, does this imply there must be on the earth's surface?

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roberto c.