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scott reid

scott r.

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Which statement is False about the equilibrant, when determining vector forces?

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Two particles, each of positive charge q, are fixed in place on a y axis, one at y = d and the other at y = -d. Write an expression that gives the magnitude E of the net electric field at points on the x axis given by x = ad. Determine the value of a that gives (a) the maximum value of E. Determine the values of a that give half the maximum value of E. Let (b) be the lesser of the two values of a, and (c) the greater of the two values.

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C) the time variation of the magnetic flux. D) current divided by time. 17. An electric generator transforms A) electrical energy into mechanical energy. B) mechanical energy into electrical energy. C) direct current into alternating current. D) alternating current into direct current. 18. If the electric field in an EM wave has a peak value of \( 2.0 \mathrm{~V} / \mathrm{m} \), what is the peak value of the magnetic field? A) 6.7 nT B) 2.0 T C) \( 3.0 \times 10^{8} \mathrm{~T} \) D) none of the given answers 19. An electromagnetic wave is traveling to the east. At one instant at a given point its \( \mathbf{E} \) vector points straight up. What is the direction of its B vector? A) north B) down C) east D) south 20. Is it possible to see a virtual image? A) No, since the rays that seem to emanate from a virtual image do not in fact emanate from the image. B) No, since virtual images do not really exist. C) Yes, the rays that appear to emanate from a virtual image can be focused on the retina just like those from an illuminated object. D) Yes, since almost everything we see is virtual because most things do not themselves give off light, but only reflect light coming from some other source. E) Yes, but only indirectly in the sense that if the virtual image is formed on a sheet of photographic film, one could later look at the picture formed. 21. A light ray, traveling parallel to a concave mirror's axis, strikes the mirror's surface near its midpoint. After reflection, this ray A) again travels parallel to the mirror's axis. B) travels at right angles to the mirror's axis. 4

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E B Tylor, the founder of cultural anthropology, thought what about culture? It was unique to humans It was shared with other primate species It was shared among humans, dolphins and certain crows. It was widespread in the animal kingdom

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1.A rod of mass \( 0.72 \mathrm{~kg} \) and radius \( 6 \mathrm{~cm} \) rests on two parallel rails that are \( \mathrm{d}=12 \mathrm{~cm} \) apart and \( \mathrm{L}=45 \mathrm{~cm} \) long. The rod carries a current of \( \mathrm{I}=48 \mathrm{~A} \) (in the direction shown in the figure) and rolls along the rails without slipping. A uniform magnetic field of magnitude \( 0.24 \mathrm{~T} \) is directed perpendicular to the rod and the rails. If it starts from rest, what is the speed of the rod as it leaves the rails? \{Answer: \( 1.073312 \mathrm{~m} / \mathrm{s} \) \} 2. A wire having a linear mass density of \( 1 \mathrm{~g} / \mathrm{cm} \) is placed on a horizontal surface that has a coefficient of kinetic friction of 0.2 . The wire carries a current of \( 1.5 \mathrm{~A} \) toward the east and slides horizontally to the north. What are the magnitude and direction of the smallest magnetic field that enables the wire to move in this fashion? \{Answer: 0.130667 B, downward \} 3. A current of \( 17.0 \mathrm{~mA} \) is maintained in a single circular loop of \( 2 \mathrm{~m} \) circumference. A magnetic field is of \( 0.8 \mathrm{~T} \) is at angle of 30 to the normal of the loop. (a) Calculate the magnetic moment of the loop. (b) What is the magnitude of the torque exerted by the magnetic field on the loop? \{Answer: a) \( 5.41127 \mathrm{~mA} \cdot \mathrm{m}^{2} \); b) \( 2.16451 \mathrm{mN} \cdot \mathrm{m} \) \}

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Displacement Elastic Force Mass (Kg.) Weight (N) (m) (N) Same as 0.050 Kg. 0.050Kg *9.8 m/s² Xm weight. 8. Build a graph of Elastic force (y axis) vs displacement (elongation) using the data in the last table. You need to plot ALL the points in the table. You can use Excel or a sheet of paper. 9. Find the best line that goes through ALL the points in your graph. From the slope of this line you can find the spring constant k.

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Industrial Industries' 2023 balance sheet shows current assets of $472,150 and current liabilities of $425,450. Their 2022 balance sheet shows current assets of $445,400 and current liabilities of $432,800. What was the firm's investment in net working capital for 2023?

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Carry out the indicated operation and write your answer using positive exponents only. $6^{7/5} \cdot 6^{-2/5}$

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Find the maximum and minimum values of the function g(\theta) = 2\theta - 7 \sin(\theta) on the interval [0, \pi] Minimum value = Maximum value = Question Help: Video Post to forum

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The Wheel Deal Inc., a company that produces scooters and other wheeled non-motorized recreational equipment is considering an expansion of their product line to Europe. The expansion would require a purchase of equipment with a price of euro 1,200,000 and additional installation of euro 300,000 (assume that the installation costs cannot be expensed, but rather, must be depreciated over the life of the asset). Because this would be a new product, they will not be replacing existing equipment. The new product line is expected to increase revenues by euro 600,000 per year over current levels for the next 5 years, however, expenses will also increase by euro 200,000 per year. (Note: Assume the after-tax operating cash flows in years 1-5 are equal, and that the terminal value of the project in year 5 may change total after-tax cash flows for that year.) The equipment is multipurpose and the firm anticipates that they will sell it at the end of the five years for euro 500,000. The firm's required rate of return is 12% and they are in the 40% tax bracket. Depreciation is straight-line to a value of euro 0 over the 5-year life of the equipment, and the initial investment (at year 0) also requires an increase in NWC of euro 100,000 (to be recovered at the sale of the equipment at the end of five years). The current spot rate is $0.95/euro, and the expected inflation rate in the U.S. is 4% per year and 3% per year in Europe. Refer to Instruction 16.1. In euros, what is the NPV of the Wheel Deal expansion? euro 1,524,690 $1,611,217 euro 75,310 euro 111,317 $1611,37

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