2. a woman pulls a 20 kg suitcase along a 15 m corridor using a horizontal force of 50 n. 2.1 calculate the work done by the woman. give the correct unit. work done = = 2.2 work has to be done against frictional forces acting on the wheels of the suitcase. explain the effect this has on the temperature of the suitcase.

Question 7 [2 marks] in the circuit below, the electromotive force generated by the battery is e = 6.0 v, and the resistances are r1 = r4 = 1.0 q, r2 = r3 =2.0 q. r. the power delivered by the battery to the circuit is closest to a. 6 w в. 12 w с. 15 w d. 18 w e. 20 w final exam autumn 2014 page 5 of 9 68037 physical modelling faculty of science [2 mark] question 8 with reference to question 7, the current through resistor r2 is closest to a. 1 a в. 2 а c. 3 a d. 4 a e. 6 a

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

Describe the function of the endomembrane system? what organelles are involved?