Physical Sciences Break 1.0

Grade 12 practice questions

QUESTION 2 2.1. A person pushes a lawnmower of mass 15 kg at a constant speed in a straight line over a flat grass surface with a force of 90 N. The force is directed along the handle of the lawnmower. The handle has been set at an angle of 40° to the horizontal. Refer…

Grade 12 acid and base questions

QUESTION 7 (Start on a new page.) 7.1 Nitric acid (HNO3), an important acid used in industry, is a strong acid.7.1.1 Give a reason why nitric acid is classified as a strong acid. (1)7.1.2 Write down the NAME or FORMULA of the conjugate base of nitric acid. (1)7.1.3 Calculate the pH of a 0,3 mol∙dm-3…

Physical sciences break 1.0 covid-19 lockdown study times

Grade 10 test yourself

7.1 The following table gives a range of electric circuit components and their symbols. Studythe table and answer the questions that follow: (14) 7.1.1 Which ONE of the above components cannot be connected in series with other components?(2)7.1.2 An ammeter measures the electrical current of an electric circuit. Define the term ’electrical current’ (2)7.1.3 A…

GRADE 12 TEST YOURSELF

A 5 kg block, resting on a rough horizontal table, is connected by a light inextensible string passing over a light frictionless pulley to another block of mass 2 kg. The 2 kg block hangs vertically as shown in the diagram below A force of 60 N is applied to the 5 kg block at…