What is the energy of an electromagnetic wave that has a frequency of 5.0×10^5 Hz? A. 3.3 × 10^-28 J
B. 1.3 × 10^-39 J
C. 3.3 × 10^28 J
D. 1.3 × 10^39 J

How are calculation for velocity and speed different

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

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.