Numerade

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100 of charge are placed on a spherical conducting shell. A particle with a charge of -JC is placed at the center of the cavity. The net charge on the outer surface of the shell is

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What is TRUE for critical periods in development? 1) A time when certain things must occur for normal development to happen and will often result in physical deformities if the organism is exposed to teratogens during this time. 2) A time when a particular type of development occurs most easily and if the organism is exposed to a teratogen the effects might not be immediately visible. 3) A time in development where certain things must occur for normal development to happen but teratogens won't negatively affect the organism. 4) A time when a particular type of development occurs most easily and will result in delays in development if the organism is exposed to teratogens during this time.

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In a 10 HP, three-phase, 50 Hz, 380 V, 6-pole (2P=6), star-connected, short-circuit (cage rotor) caged induction motor, the rotor parameters R1 = 0.294 Ω, R2 = 0.144 Ω with reduced stator and rotor, X1 = 0.503 Ω, X2 = 0.503 Ω, Xm = 13.25 Ω. Since the equation V1 = - E1 + I1 (R1 + jX1) is valid in this engine operating with 2% slip, answer the questions below. a) Draw the equivalent circuit. Use only Xm in parallel arm. Write the parameter values, current, and voltages on the circuit. b) Stator current as a phasor. c) Reduced rotor current to stator as a phasor. d) Power coefficient. e) Rotor frequency. f) Find the rotor speed. Please solve it on paper and throw it away.

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A tennis ball of mass 57.0 g is held just above a basketball of mass 597 g. With their centers vertically aligned, both balls are released from rest at the same time, to fall through a distance of 1.10 m, as shown in the figure below. (a) Find the magnitude of the downward velocity with which the basketball reaches the ground. 4.64 m/s (b) Assume that an elastic collision with the ground instantaneously reverses the velocity of the basketball while the tennis ball is still moving down. Next, the two balls meet in an elastic collision. To what height does the tennis ball rebound? -3.50 x Find the relative velocities of the basketball and the tennis ball just before collision and then apply the appropriate conservation principles and rules for perfectly elastic collisions to find the tennis ball velocity and the height that the basketball reaches. m

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Fill in the $P(X = x)$ values to give a legitimate probability distribution for the discrete random variable $X$, whose possible values are $-6, -2, 0, 1,$ and $5.$ Value $x$ of $X$ $P(X = x)$ $-6$ $ -2$ $0.20$ $0$ $0.10$ $1$ $ $5$ $0.12$ $X$ $S

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Question On the graph of $f(x) = \sin x$ and the interval $[2\pi, 4\pi)$, for what value of $x$ does the graph cross the $x$-axis? Use the draggable points on the graph below. Provide your answer below:

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11. Cash 12. Accounts Receivable 13. Allowance for Doubtful Accounts 14. Supplies 15. Prepaid Insurance 16. Merchandise Inventory 17. Equipment 18. Accumulated Depreciation - Equip Adjusting Entries: Business Transaction: a. Made an adjusting entry for the portion of prepaid insurance that has expired. b. Made an adjusting entry for the portion of supplies that have been used. c. Made an adjusting entry for depreciation of the equipment. d. Made an adjusting entry for salaries accrued at year's end. e. Made an adjusting entry for the portion of Unearned Fees that have been earned at year's end. f. Made an adjusting entry to make provision for estimated Uncollectible accounts (use the allowance method). g. Made an adjusting entry to record an inventory shortage at year's end. Closing Entries: a. Closed the Sales Discount account. b. Closed the Rent Expense account. c. Closed the Income Summary account at the end of a non-profitable year. d. Closed the Dividends account. THE END! 21. Accounts Payable 22. Salaries Payable 23. Unearned Fees 31. Capital Stock 32. Retained Earnings 33. Dividends 34. Income Summary 41. Professional Fees Rev. 42. Sales Revenue 43. Sales Discount 51. Cost of Goods Sold 52. Salary Expense 53. Supplies Expense 54. Insurance Expense 55. Rent Expense 56. Depreciation Exp - Equip 57. Uncollectible Account Ex 58. Misc. Expense Account(s) Debited Account(s) Credited

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Choose a wrong statement about uniformly mixed fund pollutants: - The damage caused by uniformly mixed pollutants is relatively insensitive to where the emissions are injected into the atmosphere. - The resulting emission reduction is not necessarily at the desired level. - The policy can focus simply on controlling the total amount of emissions in a manner that minimizes the cost of control. - The cost-effective allocation is found by equating the total control costs of the two sources.

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Question 3 (2 points) The kinetic friction of 25 N is exerted on a 850 kg vehicle. If the initial speed of the vehicle is 18 m/s, what distance will it slide before coming to a stop?

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Write the given system in the matrix form $x' = Ax + f$. $\frac{dx}{dt} = t^8x - y - z + t$ $\frac{dy}{dt} = e^tz - 5$ $\frac{dz}{dt} = tx - y + 9z - e^t$ Express the given system in matrix form.

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stephen p.