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A hot-air balloon has a volume of 2600m3. The balloon fabric (the envelope) weighs 810 Newton. The basket with gear and full propane tanks weighs 1500 Newton.
A: If the balloon can barely lift an additional 2900 Newton of passengers, breakfast, and champagne when the outside air density is 1.23 kg/m3. Obtain the average density of heated gases in the envelope?
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N).
The distance between the moon and the earth is 384,403 km, The orbital period of the moon is about 27.32 days. Calculate the average orbital speed in m/s of the moon
A string with a mass of 31 g and a length of 2 m is stretched under a tension of 67 N. How much power must be supplied to the string to generate a traveling wave that has a frequency of 51 Hz and an amplitude of 4 cm.
What mass (in grams) of steam at 100 °C must be mixed with 287g of ice at its melting point, in a thermally insulated container, to produce liquid water at 65°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, an..
q1. an electron librated from a hot filament cathode is attracted by an anode with a potential of 1200v positive with
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the back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. the walls of the
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
Which vector has the largest x component and y component
Calculate the total angular momentum of our Moon relative to the center of the Earth. You may assume that the Moon is a uniform sphere
q. a 0.500 rm kg glider on an air track is attached to the end of an ideal spring with force constant 459 rm nrm m it
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