12:55 pm Wed 28 Aug Engineering 5th year Q Home Insert Draw View A Text Mode Lasso Select Insert Space ICS 03: The temperature of air inside a hot air balloon can reach up to 100°C. This temperature change causes the density of air inside the balloon to be 0.95 kg/m³. If the air outside the balloon is 20°C with Pair = 1.204 kg/m³ What is the required volume of balloon to lift a 2 kN carriage + canvas and 4 kN worth of people? HINT: Draw a FBD and include the weight of air inside the hot air balloon.

According to the Newton's cooling law, the temperature of any substance is directly related to the distinction between the substance temperature and its environment (ambient) temperature dT =-k(T – T,)k(T-T) dt where Tis the substance temperature (C) T is the time (minute) k is constant T. is environmental temperature A casting ladle of molten metal has 290 °C, By using Euler methodology, evaluate the temperature from t=0 to 35 min with a step size of 2 min. If, T, is 25°C and k is 0,009/min.

Compare the pressure of 30 kg of air in a vessel of temperature 300 K and volume 8 m3 by considering real gas and perfect gas.

i need the answer quickly

The initial temperature of the cube with a density of 700 kg/m³ and a side of 25 cm is 400K. It is placed in an environment with a temperature of 300 K with h=50 W/(m². K) and begins to cool. Calculate the time (seconds) until the temperature of the cube reaches 360 K. You can apply the total mass approach. C cube=500 J/(kg K)

For most gases at standard or near standard conditions, the relationshipamong pressure, density, and temperature is given by the perfect gasequation of state: p = ρRT, where R is the specific gas constant. For airat near standard conditions, R = 287 J/(kg · K) in the International System of Units and R = 1716 ft · lb/(slug · ◦R) in the English Engineering System of Units.  Using the above information, consider the following two cases: a. At a given point on the wing of a Boeing 727, the pressure andtemperature of the air are 1.9 × 104 N/m2 and 203 K, respectively.Calculate the density at this point.b. At a point in the test section of a supersonic wind tunnel, the pressureand density of the air are 1058 lb/ft2 and 1.23 × 10−3 slug/ft3,respectively. Calculate the temperature at this point.

In a winter season in a certain country, you have to create steam at 100 centigrade at 1 atmosphere from a -10 centigrade snow. What energy will be consumed in kilojoules if the mass flow of steam is expected to be 1.5 kg/s?  subject : Thermodynamics

On Mars, the atmosphere is composed mainly of carbon dioxide. The value of the gas constant for the Martian atmosphere is 192 J/kg K, and the acceleration of gravity there is 3.72 m/s?. At the average level of the Martian surface, the average temperature is 228 K, the pressure is 774 Pa, and the density is 0.01768 kg/m3. surface, the average temperature is 225 K. What are the pressure and density at this altitude? At an altitude of 1km above the

The answer is B. Pls explain well

The figure shows a 50.-kg frictionless cylindrical piston that floats on 20 mol of compressed air at 45.°C. How far does the piston move if the temperature is increased to 600 °F? (This is an Isobaric process and the piston is at sea level under an atmospheric pressure of 101.3 kPa). The values given in the figure are: 50. Kg, 30.°C, and 10. cm.