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A 1000 VA, 120 x 12-volt lighting transformer is connected to a 15-amp circuit breaker with 14 AWG copper conductors. The secondary conductors are 4 AWG copper THHN/THWN. Is this primary protection only adequate per the NEC®? Compare the requirements of NEC® 450.3 with 240.4(F).

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the steps to the answer reveal. But part b is missing?

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Given the function of two variables, $z = ye^{xy}$ Then the second derivative, $f_{xy}$, is equal to: $ye^{xy}(2 + xy)$ $xy^3e^{xy}$ $xe^{xy}(2 + xy)$ $ye^{xy}(1 + xy)$ $xe^{xy}(1 + xy)$ Clear my selection

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14. If you are trying to read something in small print, you might move your eyes to concentration on the words you are trying to read. If you do this, what are you really trying to accomplish? a. To allow lens to focus on small print b. To direct light onto fovea c. To increase the amount of light allowed to hit retina d. To direct away from blind spot

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21 2 points is when one country is more efficient than another in a type of product or service. Absolute advantage Global advantage Unfair advantage Free trade

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Question 54 Suppose that a price ceiling is set at $1.50 in the market above, what will be the Producer Surplus? a. 120 b. 110 c. 90 d. 150

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Consider the function $f(x) = \frac{2 + 9 \ln x}{x}$ on the interval $(0, \infty)$. For each of the following, enter DNE if a value does not exist. This function has an absolute minimum value equal to DNE which is attained at $x =$ DNE This function has an absolute maximum value equal to which is attained at $x =$ 2.17766

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1. What would be the effect on the embryo of injecting an inhibitor of microtubule polymerization into a fertilized sea urchin egg?

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17. A disk of mass $m_1$ and radius R spins in the horizontal plane at angular speed $\omega_1$ about a vertical axis through its center. A second disk of mass $m_2$ and radius R, which is initially not rotating, is then dropped onto it from above, and they rotate together about the same axis after the collision. The final rotational kinetic energy of the system is 1/3 of the initial rotational kinetic energy. What is the value of $m_2$ ? Formula: rotational inertia for a disk about its CM: $I_{CM} = \frac{1}{2} mR^2$ (a) $m_1$ (b) $2m_1$ (c) $3m_1$ (d) $m_1 / 2$ (e) $m_1 / 3$

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Problem 3 (18 marks) MacDonald Contractors is considering upgrading a large portion of their manufacturing equipment. The new equipment will cost $4,500,000 and an additional $50,000 of installation costs will be required. The equipment will be at end of life in five years at which time they expect they will be able to resell it for $1,500,000. As a result of this new more efficient equipment they expect sales to increase from 200,000 units to 235,000 units per year until the equipment is retired. Currently they can sell the product for $25 per unit and they expect that price to remain the same. As well with the increased production level, they will require increased inventory at a cost of $60,000

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charles w.