Consider a rectangular fin that is used to cool a motorcycle engine. the fin is 0.2 m wide (in the flow direction) and at a temperature of 225°c, while the motorcycle is moving at 80 km/hr in air at 27°c. the air is in parallel flow over both surfaces of the fin, and you can assume fully turbulent flow (a) what is the rate of heat removal per unit length of the fin? (b) plot the heat removal rate per unit length as a function of the motorcycle speed from 10 to 100 km/hr.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

Answerthe global climate during the paleogene departed from the hot and humid conditions of the late mesozoic era and began a cooling and drying trend which dispite having been periodically disrupted by warm periods such as the paleocene-eocene thermal maximum, persists today;

Answer///(d) atoms contain small,negatively charged particles;