If the temperature increase, the rate of chemical reaction also increase because the particles start moving faster. if the surface area increase, the rate if chemical reaction also increases because the chances of the collision become more. hence, the reaction rate becomes fast.

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)

Why is the basic problem of economic,scarcity, a universal problem?

What is a transverse wave? how do the particles in the medium move in relation to the energy of the wave? does this wave require a medium?