Answer:
The correct option is: 2. Propane
Explanation:
Minimum ignition energy, abbreviated as MIE, is the minimum energy required to ignite the flammable mixture of air at atmospheric pressure and room temperature. The unit used to measure this energy is millijoule, mJ
The values of the minimum ignition energy for the following gases are:
Butane = 0.25 mJ
Propane = 0.26 mJ
Ethylene = 0.07 mJ
Hydrogen = 0.017 mJ
Cyclohexane = 0.22 mJ
<u>Therefore,among the following gases, Propane requires the most ignition energy, 0.26 mJ. </u>
Where are your answer options?
Hard wood is gritty and soft wood is smooth wood , because they have different texture
Answer:
As given in the problem statement,flow is in compressible and flow is internal flow
Re=5*10^5
Using equation
V=Re/density*diameter of pipe
Maximum velocity=98.98 m/s
Answer:
g = 9.69 m/s²
Explanation:
given,
height from where ball is dropped = 800 cm = 8 m
impact velocity = 41 ft/s = 41 × 0.3048 = 12.45 m/s
acceleration due to gravity = ?
initial potential energy is given by
PE = m g h
= m g × 8
= 8 mg..............(1)
now final kinetic energy
=77.50 m.....................(2)
comparing equation (1) to (2)
8 mg = 77.50 m
g = 77.5/8
g = 9.69 m/s²