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If a hot air balloon floats at a constant elevation (it has reached equilibrium) where the local atmospheric pressure is 98 kPa (abs) and outside air temperature is 285 K, and the hot air inside the balloon is at 400 K (and also at the local atmospheric pressure since the balloon is open at the bottom),
determine what volume the balloon must occupy if the basket, passengers and balloon material together weigh 5500 N?
(Hint- the hot air inside the balloon also has weight)
Ice of mass 52.0 g at -10.6° C is added to 188 g of water at 14.5° C in a 102 g glass container of specific heat 0.200 cal/g-°C at an initial temperature of 23.3° C
A Carnot engine performs work at the rate of 380 kW when using 730 kcal of heat per second. If the temperature of the heat source is 560 C, at what temperature is the waste heat exhausted.
Water at a pressure of 4.3 atm at street level flows into an office building at a speed of 0.6 m/s through a pipe 5 cm in diameter. What is the pressure in the top floor pipe
The hydrogen bomb detonated in 1954 had an explosive power equal to about 15 megatons of TNT, How many times more explosive was the hydrogen bomb
If you mix 2.5g of 100 degree celcius steam with 60g of 0 degree celcius ice. what percentage of the ice remains solid
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
q1. a bird lands on a bare copper wire carrying a current of 23 a. the wire is 8 gauges which means that its
A coil of four circular loops of radius 3.0cm carries a current of 5.0A clockwise, What is the magnetic field at the center of the coil
A loudspeaker of mass 20.0 kg is suspended a distance of h = 2.20m below the ceiling by two cables that make equal angles with the ceiling. What is the tension T in each of the cables
A truck weighs four times as much as a car. if the truck coasts into the car at 12km/h and they stick together, what is their fimal velocity.
Planet Z is 1.00×104km in diameter. The free-fall acceleration on Planet Z is 10.0m/s2. What is the mass of Planet Z
A laboratory technician drops a 0.0840-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. Compute the specific heat capacity of the sample
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