If the turbine uses a gas which is liquid at room temperature then you can use a condenser after the exhaust to increase the pressure difference.

If mass is used, specific impulse is an impulse per unit mass, which dimensional analysis shows to be a unit of speed, and so specific impulses are often measured in meters per second and are often termed effective exhaust velocity.

If they did record their output, they would exhaust the limited computer memories available then, and so the computer's ability to read and write numbers.

If done in the spring, cutting off vines must be repeated as regrowth appears to exhaust the plant's stored carbohydrate reserves.

If you lay siege to a town, you will exhaust your strength.

* If the pressure in the train line is lower than that of the reservoir, the brake cylinder exhaust portal is closed and air from the car's reservoir is fed into the brake cylinder to apply the brakes.

If is a non-constant function of the amount of fuel left < ref > Can be the case for a " blow-down " system for which the pressure in the tank gets lower when fuel has been used and that not only the fuel rate but to some lesser extent also the exhaust velocity decreases .</ ref >

If a jet engine were to run in " reverse " in this context, it would take in ambient heat and exhaust fumes to generate kerosene and oxygen.

If all the energy to accelerate the fuel comes from an external source ( and there is no additional momentum transfer ), then the relationship between effective exhaust velocity and specific impulse is as follows:

If not very massive, it may be found in the horizontal branch on the Hertzsprung – Russell diagram, or its position in the diagram may move in loops .< sup >, chapter 6 .</ sup > If the star is not heavier than approximately 8 solar masses, it will eventually exhaust the helium at its core and begin to fuse helium in a shell around the core.

If the liquid is injected on only one side of the missile, it modifies that side of the exhaust plume, resulting in different thrust on that side and an asymmetric net force on the missile.

If gasoline was spilled, which often happened, if could be ignited by the hot engine exhaust.

If thought were divorced from the children's direct experiences, it would exhaust them.

If the player manages to destroy the Death Star without firing at anything but the exhaust port, he will receive a sizeable point bonus for " using the force.

If a bank has two consecutive piston firings it will create a high pressure area in the exhaust pipe, because two exhaust pulses are moving through it close in time.

If fueled by carbon-containing fuels such as natural gas, the exhaust will contain CO < sub > 2 </ sub > but reduced by up to 50 % compared to diesel engines running on marine bunker fuel.

If modifications cause the engine to run moderately lean, there will be a slight increase in fuel economy, sometimes at the expense of increased NO < sub > x </ sub > emissions, much higher exhaust gas temperatures, and sometimes a slight increase in power that can quickly turn into misfires and a drastic loss of power, as well as potential engine damage, at ultra-lean air-to-fuel ratios.

If modifications cause the engine to run rich, then there will be a slight increase in power to a point ( after which the engine starts flooding from too much unburned fuel ), but at the cost of decreased fuel economy, and an increase in unburned hydrocarbons in the exhaust which causes overheating of the catalytic converter.

If it is, then the control unit activates a solenoid valve that directs boost pressure to the turbocharger's pneumatically controlled wastegate actuator, which opens the wastegate to bypass exhaust gases from the turbocharger directly to the exhaust pipe, lowering turbo boost pressure until the knock subsides.

If the EGR is functioning properly, the manifold absolute pressure will increase as exhaust gases enter.

If the aspect ratio is too large, the turbo will fail to create boost at low speeds ; if the aspect ratio is too small, the turbo will choke the engine at high speeds, leading to high exhaust manifold pressures, high pumping losses, and ultimately lower power output.

If we define r < sub > i </ sub > as the displacement of particle i from the center of mass, and v < sub > i </ sub > as the velocity of particle i with respect to the center of mass, then we have

If the vector field represents the flow velocity of a moving fluid, then the curl is the circulation density of the fluid.

If air is heated in a region it will expand in all directions such that the velocity field points outward from that region.

If called upon, the neighbouring amoeba midwife travels up to 200 μm towards the dividing amoeba, usually advancing in a straight trajectory with an average velocity of about 0. 5 μm / s.

If ω is directly proportional to k, then the group velocity is exactly equal to the phase velocity.

If the waves are propagating through an anisotropic ( i. e., not rotationally symmetric ) medium, for example a crystal, then the phase velocity vector and group velocity vector may point in different directions.

If the bullets have to travel a varying distance from the case to the point where they engage the rifling, then this can result in variations in pressure and velocity.

If a frictional force ( damping ) proportional to the velocity is also present, the harmonic oscillator is described as a damped oscillator.

If the initial and final positions are sufficiently close together, the maximum acceleration or maximum velocity may never be reached.

If there is a difference in velocity between two disks, any matter transferred between them must be accelerated by the disk accordingly.

If a particle of charge q moves with velocity v in the presence of an electric field E and a magnetic field B, then it will experience a force

If the center of mass is moving at velocity, the momentum is:

If one body has much greater mass than the other, its velocity will be little affected by a collision while the other body will experience a large change.

If the cannon fires its ball with a low initial velocity, the trajectory of the ball curves downward and hits the ground ( A ).

If the cannonball is fired with sufficient velocity, the ground curves away from the ball at least as much as the ball falls — so the ball never strikes the ground.

If, e. g., u is the speed of a particle, then the straightforward notation for its velocity is u, < u > u </ u >, or.

If the rotor disk is to be tilted forward ( to gain forward velocity ), its rotation requires that the downward net force on the blade be applied roughly 90 degrees ( depending on blade configuration ) before, or when the blade is to one side of the pilot and rotating forward.

If an object moves with angular velocity ω around a circle of radius r centered at the origin of the x-y plane, then its motion along each coordinate is simple harmonic motion with amplitude r and angular frequency ω.

If the world is reflected in a mirror which switches the left and right side of the car, the reflection of this angular velocity vector points to the right, but the actual angular velocity vector of the wheel still points to the left, corresponding to the minus sign.

If the group velocity ( see below ) is wavelength-independent, this equation can be simplified as:

If a photon rocket begins its journey in low earth orbit, then one year of thrusting may be required to achieve an earth escape velocity of 11. 2 km / s if the vehicle is already in orbit at a velocity of 9, 100 m / s, and 400 m / s additional velocity is obtained from the east to west rotation of the earth.