If the target can change its position significantly during the 30 minutes the missile is in the air on its way, the probability of the missile destroying the target is drastically reduced.

If your house is to have a forced warm air system, cooling can be a part of it.

If the brine regenerator uses high heat, they also partially sterilise the air.

If enough electric power is available, cooling can be provided by conventional air conditioning using a heat pump.

If the collar at the bottom of the tube is adjusted so more air can mix with the gas before combustion, the flame will burn hotter, appearing blue as a result.

If the holes are closed, the gas will only mix with ambient air at the point of combustion, that is, only after it has exited the tube at the top.

If the combustion takes place using air as the oxygen source, the nitrogen can be added to the equation, as and although it does not react, to show the composition of the flue gas:

If the air mass is colder than the ground below it, it is labeled k. If the air mass is warmer than the ground below it, it is labeled w. While air mass identification was originally used in weather forecasting during the 1950s, climatologists began to establish synoptic climatologies based on this idea in 1973.

If light pressure were the cause of the rotation, then the better the vacuum in the bulb, the less air resistance to movement, and the faster the vanes should spin.

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

If the air cools and contracts, the divergence is negative and the region is called a sink.

If the average density ( including any air below the waterline ) of an object is less than water it will float in water and if it is more than water's it will sink in water.

If extension is executed properly the discus will be at the right angle to ride on the air current and thus be taken a farther distance.

If a larger fire is necessary, the smith increases the air flowing into the fire as well as feeding and deepening the coke heart.

If a solid surface is chilled below the dew point of the surrounding air and the surface itself is colder than freezing, frost will form on the surface.

If the indoor air is very humid, rather than moderately so, water will first condense in small droplets and then freeze into clear ice.

If the vocal folds are drawn apart, air flows between them causing no vibration, as in the production of voiceless consonants.

If too much water and not enough air surrounds the plants roots, it is possible to gradually lower the medium's water-retention capability by mixing in increasing quantities of perlite.

The valuation of the Koh-i-Noor is given in the legend that one of Nader Shah's consorts supposedly said, " If a strong man should take five stones, and throw one north, one south, one east, and one west, and the last straight up into the air, and the space between filled with gold and gems, that would equal the value of the Koh-i-noor.

If the fluid is air, the force is called an aerodynamic force.

If Af is the change per unit volume in Gibbs function caused by the shear field at constant P and T, and **yr is the density of the fluid, then the total potential energy of the system above the reference height is Af.

# If adiabats and isotherms are graphed severally at regular changes of entropy and temperature, respectively ( like altitude on a contour map ), then as the eye moves towards the axes ( towards the south-west ), it sees the density of isotherms stay constant, but it sees the density of adiabats grow.

If the boat floats, the mass of the boat ( plus contents ) as a whole divided by the volume below the waterline is equal to the density of water ( 1 kg / l ).

If the universe is flat, there must be an additional component making up 73 % ( in addition to the 23 % dark matter and 4 % baryons ) of the energy density of the universe.

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

If the carriers are holes, replace electron density by the negative of the hole density.

If a probability distribution has a density function f ( x ), then the mean is

If the density of the chain is variable then the analysis above can be adapted to produce equations for the curve given the density, or given the curve to find the density.

If the body is not homogeneous, then the density is a function of the position.

If μ is an unknown constant and W is random noise with probability density, then has probability density and is therefore a location family ..

If the fluid being measured is significantly dense, hydrostatic corrections may have to be made for the height between the moving surface of the manometer working fluid and the location where the pressure measurement is desired except when measuring differential pressure of a fluid ( for example across an orifice plate or venturi ), in which case the density ρ should be corrected by subtracting the density of the fluid being measured.

If the random variable is real-valued ( or more generally, if a total order is defined for its possible values ), the cumulative distribution function gives the probability that the random variable is no larger than a given value ; in the real-valued case it is the integral of the density.

If they had any significant level of non-organic parts then something as simple as an x-ray scan would show them not to be human ( unless their creators designed the non-organic parts to have almost exactly the same structure and density as the organic components they were replacing, which would be both infeasible and highly improbable but not completely out of the question ).

If the tip is moved across the sample in the x-y plane, the changes in surface height and density of states cause changes in current.

If the turns of the coil are oriented perpendicularly to the magnetic field lines, the flux is the product of the magnetic flux density B and the area A through which it cuts.

If the flux in the core is purely sinusoidal, the relationship for either winding between its rms voltage E < sub > rms </ sub > of the winding, and the supply frequency f, number of turns N, core cross-sectional area a and peak magnetic flux density B is given by the universal EMF equation:

If a substance's relative density is less than one then it is less dense than the reference ; if greater than 1 then it is denser than the reference.

If the temperature is controlled properly, the avocado will delay its ripening until needed.

If the steel is cooled slowly, the iron will gradually change into its low temperature allotrope.

If the slowing down of certain seismic waves caused by the damp spot helped uncover the underground ocean, the unusual temperature variation with depth measured in 241 inactive oil wells helped locate the subterranean river.

If the pressure in a system remains constant ( isobaric ), a vapor at saturation temperature will begin to condense into its liquid phase as thermal energy ( heat ) is removed.

If the heat of vaporization and the vapor pressure of a liquid at a certain temperature is known, the normal boiling point can be calculated by using the Clausius-Clapeyron equation thus:

If the ambient temperature exceeds T < sub > m </ sub >, the homologous pairing of the sticky ends would not be stable because the high temperature disrupts hydrogen bonding.

If an ideal thermally conductive blackbody was the same distance from the Sun as the Earth is, it would have a temperature of about 5. 3 ° C.

If black holes have a finite entropy, they should also have a finite temperature.

If we neglect the possibility of overlapping states, which is valid if the temperature is high, then the number of times we count each state is approximately N < nowiki >!</ nowiki >.

If the temperature rise is too high, thermal motion will destroy the delicate cooperative ordering of the LC phase, pushing the material into a conventional isotropic liquid phase.

If the gas pressure is reduced, the cooling effect will decrease, hence the equilibrium temperature of the wire will increase.

: If the temperature T of a body is quantified as 300 kelvin ( in which T is the quantity symbol, 300 the value, and K is the unit ), this is written

If kept in too warm a temperature, both mature and new potatoes will sprout and shrivel.

If the piston is slowly lowered, the system will trace a curve of increasing temperature and pressure within the gas region of the phase diagram.

If a reactor needs to be frequently shut down, NaK is used ; due to it being liquid at room temperature, cooling pipes do not freeze.

# If all the particles are identical ( same energy barrier and same magnetic moment ), their easy axes are all oriented parallel to the applied field and the temperature is low enough ( T < sub > B </ sub > < T ≲ KV /( 10 k < sub > B </ sub >)), then the magnetization of the assembly is.

# If all the particles are identical and the temperature is high enough ( T ≳ KV / k < sub > B </ sub >), then, irrespective of the orientations of the easy axes:

If the star temperature has been determined by a majority of absorption lines, unusual absences or strengths of lines for a certain element may indicate an unusual chemical composition of the photosphere.

If this increased rate of injection ... should raise the present background opacity by a factor of 4, our calculations suggest a decrease in global temperature by as much as 3. 5 ° C.

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.

So If a third metal is inserted in either wire and if the two new junctions are at the same temperature, there will be no net voltage generated by the new metal.

If ' is positive, the resistance increases with increasing temperature, and the device is called a positive temperature coefficient ( PTC ) thermistor, or posistor.