Numerade

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(1) Consider the scalar functions $g(x, y) = x + y$, $h(x,y) = x^2 + \frac{1}{2}y^2$, $l(x, y) = y - x^2$, $m(x,y) = 1 - x^2 - y^2$, $n(x, y) = xy$. Match each to the vector field of its gradient. Hint: Gradient vectors of a function are orthogonal to its levels curves. (a) (d) (b) (e) (c) (f)

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A gas is enclosed in a cylinder fitted with a light frictionless piston and maintained at atmospheric pressure. When 254 kcalkcal of heat is added to the gas, the volume is observed to increase slowly from 12.0 m3m3 to 16.2 m3m3 . Part A Calculate the work done by the gas. Express your answer with the appropriate units. Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type W

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John B. Watson emphasized that a) both humans and other animals learn to expect that a CS will be followed by a US. b) learning depends on how predictably rather than how frequently events are associated. c) unlike other animals, humans learn through a process of cognition. d) learning should be explained without any reference to mental processes.

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Shanya will automatically save as you proceed through the test. C the sympathetic nervous system d growth hormone ? Saved Question 9 7/20 an The stimulus for secretion of aldosterone is: Selected answer will be automatically saved. For keyboard navigation, press up/down. a decreased blood volume b hypokalemia c increased blood volume d hypertension Question 10 Secretion of the hormones of the anterior pituitary gland is regulated by the: Selected answer will be automatically saved. For keyboard navigation, press up/down arro

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The mean per capita income is 20,908 dollars per annum with a standard deviation of 407 dollars per annum. What is the probability that the sample mean would differ from the true mean by less than 28 dollars if a sample of 55 persons is randomly selected? Round your answer to four decimal places.

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(b) (1 mark) Write Python code that takes the string 'The quick brown fox jumps over the lazy dog' as input and produces the following output: ['THE', 'the', 3] ['QUICK', 'quick', 5] ['BROWN', 'brown', 5] ['FOX', 'fox', 3] ['JUMPS', 'jumps', 5] ['OVER', 'over', 4] ['THE', 'the', 3] ['LAZY', 'lazy', 4] ['DOG', 'dog', 3]

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This thermodynamic cycle describes the formation of an ionic compound M?X from a metal element M and nonmetal element X in their standard states. Use t to answer the questions in the table below. 800. 2M(g) + 2x + x(g) 700. 600. 2M²(g) + x(g) 500. 400. enthalpy 2M(g) + x(g) (kJ/mol) 300. 200. 2M(g) + \frac{1}{2}X?(g) 100. 2M(g) + \frac{1}{2}X?(g) 0. M?X(s) -100. What is the lattice enthalpy of M?X? kJ/mol What is the formation enthalpy of M?X? kJ/mol More stable. Suppose both the ionization enthalpy of M and the X-X bond enthalpy were bigger. Would M?X be more stable? Or less? Less stable. It is impossible to tell without more information.

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3 Normal an ab A ray Comes from Air to be incident on a surface- of medium index 1.52. ab \| bc. If $\theta_3$ is the critical angle between the glass and Air. $\implies \theta_3 = \theta_c$ What is $\theta_1$? 4 ? C F F C A Convex spherical mirror with $|f| = 15.8 cm$ The image is formed behind the mirror at 12.8 cm from it. Where is the object was and the magnification? Describe the image with the object. Draw the ray diagram.

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Inside a 117 mm x 316 mm rectangular duct, air at 20 N/s, 23 deg C, and 108 kPa flows. Solve for the volume flux if R = 29.7 m/K.

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what is physically happening to the muscle during the stages of depolarization, repolarization and hyperpolarization? contracting, relaxing, etc?

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ronald s.