Two ice creams trucks (A and B) are racing as shown in the drawing in order to get back to the warehouse to get more ice cream. Truck A has a speed of 40.0 m/s and Truck B has a speed of 5.0 m/s.
Truck B is playing a 500 Hz bell to say hello to Truck A. What frequency will truck A hear?
- 567 Hz
-558 Hz
- 574 Hz
- 550 Hz
-435 Hz
-441 Hz

Which statement best describes how private industry decides where to spend the money on research and development

There are weak or strong attractive forces between atoms of liquids with a high viscosity

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