Question

If a tender in a fire starter requires an ignition temperature of 2500F, what is the...

If a tender in a fire starter requires an ignition temperature of 2500F, what is the compression ratio (inital volume over final volume) needed to light the tender and what is the work required for an initial mass of 8.7x10^-5 lbm?

use Rair = 53.35 (ft lbf)/(lbm R)

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A Carbon dioxide fire extinguisher initially contains 5.5lbm of CO2 gas. In “real life” the CO2...
A Carbon dioxide fire extinguisher initially contains 5.5lbm of CO2 gas. In “real life” the CO2 would not be all gas, but for this problem assume that it is. The CO2 gas has an initial pressure of 860psia and initial temperature of +72oF. Immediately after putting out a fire, it has a final pressure of 100psia and a final temperature of -30oF. Assume ideal gas law behavior. a) Show that the specific gas constant for CO2 gas is approximately R=1131ft∙lbf/(slug∙R)....
Consider the slow adiabatic compression of a closed volume of gas for which Cp = 3.5...
Consider the slow adiabatic compression of a closed volume of gas for which Cp = 3.5 R. If the initial gas temperature is 320 K and the ratio of the final pressure to the initial pressure is 4, what is the change in enthalpy of the gas, the change in internal energy, the heat transferred Q, and the work W? Assume a basis of 1 mole of gas.
1. A tank of air contains 100 ft^3. The pressure and temperature are 1000 F and...
1. A tank of air contains 100 ft^3. The pressure and temperature are 1000 F and 100 psia. The air is cooled to 100 F. a. Find the mass of the air b. Find the initial energy of the tank (Btu) c. Find the final energy of the tank (Btu) d. Compute the heat (Btu) 2. Water is contained inside a constant pressure piston cylinder device. The initial temperature and quality of the water are x=0 and T=300 F. The...
1. You purchase 9.3 gallons of gasoline. Assume that the properties of gasoline are Molecular weight...
1. You purchase 9.3 gallons of gasoline. Assume that the properties of gasoline are Molecular weight (Mw) = 113, Specific Gravity (SG) = 0.70. Remember that the density of water is 62.4 lbm/ft^3. What is the weight in lbf of the gasoline? and how many g ? moles are there in this quantity of gasoline? 2. Recall that the ideal gas law is P V = nRT where P is pressure, V is volume, n is number of moles, R...
Question 1 : The temperature of a 0.555 kg block of ice is lowered to -120°C....
Question 1 : The temperature of a 0.555 kg block of ice is lowered to -120°C. Heat (0.5159 MJ) is then transferred to the block of ice (assume ice is otherwise thermally isolated). What is the final temperature of the water in °C? Question 2 : Calculate the time needed (seconds) to that up 285 mL of tomato soup from 4.0°C to 57°C in a 1100. watt microwave oven. Assume that the density of tomato soup is 1.25 g/mL and...
1) A nozzle is a device for increasing the velocity of a steadily flowing stream of...
1) A nozzle is a device for increasing the velocity of a steadily flowing stream of fluid. At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. (i) Find the velocity at the nozzle exit. (ii) If the inlet area is 0.1 m2 and specific volume...
The oxidation of nitric oxide NO + 0.5 O2 --> NO2 takes place in an isothermal...
The oxidation of nitric oxide NO + 0.5 O2 --> NO2 takes place in an isothermal batch reactor. The reactor is charged with a mixture containing 20.0 volume percent NO and the balance air at an initial pressure of 380 kPa (absolute). (a) Assuming ideal-gas behavior, determine the composition of the mixture (component mole fractions) and the final pressure (kPa) if the conversion of NO is 90%. (b) Suppose the pressure in the reactor eventually equilibrates (levels out) at 360...
1) A hot air balloon consists of a very large bag filled with heated air at...
1) A hot air balloon consists of a very large bag filled with heated air at 120.0 °C produced from a propane burner. It has a basket hanging under it in which several people can ride. The average hot air balloon has a volume of 2.80 × 103 m3 when fully inflated. a) Determine the work (in kJ) needed to inflate the balloon under an external air pressure of 1.00 atm. b) The specific heat of the air found in...
Table 1 shows the temperature-time data were recorded for the reaction between 50.0 mL of 1.18...
Table 1 shows the temperature-time data were recorded for the reaction between 50.0 mL of 1.18 M HA (a weak acid) and 50.0 mL of 0.98 M NH4OH, ammonium hydroxide (a weak base, also known as aqueous ammonia). The solutions were mixed after 60 s of approximately constant temperature readings of 24.20 oC. This is the initial temperature. Table 1: temperature-time Data Time (s) Temperature (oC) Time (s) Temperature (oC) 0 24.25 90 31.22 15 24.22 105 31.12 30 24.20...
An air gun fires a bullet by means of compressed air. Simplistically, an air gun can...
An air gun fires a bullet by means of compressed air. Simplistically, an air gun can be viewed as a metal cylindrical tube open on one end and plugged air-tight in the middle by the bullet, which is held in place by a trigger. The space between the bullet and the blind end is filled with compressed air. When the trigger is released, the compressed air undergoes a sudden expansion against ambient pressure, pushing the bullet out of the tube...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT