DThe exhaust fan ina factory moves 400 CEM(cubic feet per minute) through the building. Giren that 1.00 in E 2.54 cm, how many cubic meters per second of fresh air does this fa move? Ao.298m²/sec B22.7 msec clo.189m°%sec m²/sec D2.05 m

A rocket engine shoots exhaust gas at 5.0 EH PA of gas pressure through a nozzle who's area is 0.3 M to what is the fourth pushing the rocket forward?

H0.1B mole Helionm filled balloen ises to is 0.03 m3 and autside teme is 58°F. what 1S the pressure. an alti tuae where ist v

4. 100.0 g of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4180J/kg°C, calculate the amount of heat energy needed to cause this rise in temperature.  5. A 0.3 kg piece of copper is heated and fashioned into a bracelet. The amount of energy transferredby heat to the copper is 66,300 J. If the specific heat of copper is 390 J/kg celcius, what is the change of thecopper's temperature?

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If the linear mass density of a cord is0.042 kg/m, then what is the mass of245 mof the cord?8.A.9.855 kgD.9.433 kgB.9.914 kgE.10.07 kgC.10.29 kgF.10.80 k

1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b) Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm (1.00 x 10 m) applied with a force of 3.00 N. Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is a needless use of non-SI units.]

Carbon dioxide gas, CO2, travels at about 340 m/s at room temperature. What is the travel rate (velocity) of helium, He, at the same temperature?

What is the cost of heating water in a swimming pool of radius 3.5 m and depth 1.3 m from 13 degress celcius to 27 degress Celcius. If the price of energy is $0.08/ KWh. The specific heat of water is 4186 J/Kg/Cdegrees and density of water is 1000 Kg/m^3. (Hint: Volume of cylinder is πr2h) A. $30.25 B. $65.15 C. $95.50 D. $25.25 E. $133

A 0.125 m3 container is filled with 1.25 kg of air at 30°C. What is the pressure in the container in kPa? Report your answer to the nearest whole number, using rounding.