How different these two equations meaning? Eg(bandgap energy) = hv-1/2KBT Eg= hv-kBT

34show complete solution, as well as the derivation of all equations needed.

How fast can you answer my question? Does anyone online anytime?

I would like help with 4a. I got -310 but I think I did it wrong....

Marc left Town A at 8 a.m. and drove to Town B at an average speed of 60 km/h. 1 1/2 hours later, Ben left Town A and drove to Town B, follwing the same route as Marc. After travelling for 240 km, Ben caught up with Marc. (a) What was Ben's average speed? (b) How far apart were they at 2 p.m.?

The distance traveled (approximate) in the first fifty seconds. v (m/s) 40 30 20 10 0 0 10 20 30 40 50 g C 60 70 t (s) 80 90 100 110 120

find the Velocity of arocket by using Styling formula t= 150 sec +(s) v (mile/) Go 120 180 0.0824 0.2742 0.6502 240 1.38 51 300 3,2224

(2) Two cars are 150 kilometres apart and travelling toward each other. One car is movng at 60 km/h and the other is moving at 40 km/h. In how many hours will they meet? A) 2.5 h B) 2.0 h C) 1.75 h D) 1.5 h E) 1.25 h 40 156km

May you solve 2. question?

9 A car making a 100 km journey covers the first 50 km. at 40 km/h. How fast must it cover the second 50 km. to have an average speed of 50 km/h for the entire trip? Show your solution 66.7 km/h 10 km/h 100 km/h 40 km/h