Numerade

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4. Testing of a demolition explosion is to be evaluated. Sensors indicate that the shock wave is associated with an absolute pressure of 205 kPa. (a) If the ambient temperature and pressure are 20°C and 101 kPa, find the speed of the shock wave, and the temperature and speed of the air just after the shock passes. Assume constant specific heats. (b) Look up the values of the specific heats for the temperature you calculated, and calculate the resulting k. By what percentage do Cp, Cv and k differ relative to the value at ambient condi- tions? Was the constant specific heats assumption justified?

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anchor the valve apparatus to the ventricular walls Select one: annulus chordae tendinae papillary muscle valvular tissue

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What is the pH of a 0.35 M solution of sodium azide? The Ka value for hydrazoic acid is 1.9  105.

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Alex is giving a speech in front of their professional organization, but they are extremely nervous; their face is visibly red, and even worse, they can hear how shaky their own voice is. What component of emotional experience is Alex expressing? Group of answer choices cognitive appraisals physiological changes affect simulation

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The weight of an astronaut plus his space suit on the Moon is only 250 N. What is their mass on the Moon? A 95 kg B 150 kg C 250 kg D 60 kg

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The process of measuring a person's metabolic rate by the measurement of heat production is called

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QUESTION 1 As a result of the Newlands Reclamation Act of 1902, A. proceeds from the sale of western public lands would be used to finance irrigation projects. B. the federal government transferred all of its public-domain lands in California to the state. C. farmers in the West were allowed to organize into irrigation districts and operate irrigation projects. D. western farmers intending an economically productive use of river water were given the right to appropriation.

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The wall temperatures during the heat transfer from saturated steam (h1 = 11600 W/m^2K) at a temperature of 150\deg C to non-boiling water (h2 = 580 W/m^2K) at a temperature of 50\deg C are to be determined for a steel wall thickness (\lambda = 58 W/mK) of 4 mm (flat wall). Heating surface area A = 1 m^2. Heat transfer coefficient k [W/m^2K]=? Heat flux [kW]=? Wall temperature Tw1 [\deg C]=? Wall temperature Tw2 [\deg C]=?

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The Coase theorem suggests that private bargains will ensure the efficiency of markets even when externalities exist: but only in the presence of government regulation. if consumers have more information regarding the externality than suppliers. if transaction costs are low and property rights are well defined. if the cost of the negotiations is less than the price of the good.

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(i) Using an appropriate scale, design a 13 elements antenna for operations in digital dividend frequency of 106MHz. (ii) What type of antenna is described with the specification above? (iii) What is the frequency band utilized by this antenna? (iv) Calculate the total length of the (v) Explain two applications of the antenna b) with your own theoretical and practical understanding of antennas, explain why helical antennas are used in satellite links

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alejandra e.