Recent content by rosie_burk

Homework Statement Studetns examine the aerodynamics of a model car which has a drag force in air of 10 N at 10 m/s. They wish to estimate what the drag will be for a full scale model, and the energy lost on a given trip. The drag coefficient C remains constant C= 0.6. The cross-sectional...

Homework Statement A photovoltaic cell has area 80 sq cm and efficiency converting energy in the form of sunlight to electricity of 7%. The sun's intensity is 800 W / sq m and the rays are perpendicular to the cell's surface. What power will be produced by this cell (in W)? Take care in...

auxins experiment Thanks :) What would you expect to happen when you removed the meristem from 10 coleptiles, then placed five in water and the other five in auxin concentration of (2mg/ml)? What would you notice about the number of cells for each section?

The thermite process can be used to weld lengths of railway track together. A mould placed over the ends of the rails to be joined is filled with a charge of aluminium powder and iron(iii) oxide. When the mixture is ignited, a redox reaction occurs to form molten iron, which joins the rails...