Can someone explain to me how this problem is done? you so much.

julie is walking around a track at a 3.5m/s for some exercise. she then decides to start jogging so she accelerates at a rate of 0.25m/s^2 for 3.0 seconds. how far did julie travel from the time she started to accelerate to the end of the 3.0 seconds?

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)

The process of a material going through a change of state from a gas to a liquid

Estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29×10 to the power of −11 m, the expected position of the electron in the atom.