question8
Question 8
Two charged spheres, X and Y, are placed in a vacuum at a distance of 0,04 m apart. 8.1 Draw the resulting electric field pattern between the two charges. (3) 8.2 Calculate the electrostatic force sphere X experiences due to the charge on sphere Y. (4) 8.3.1 If sphere Y is at a fixed position … Read more
Question 8
8.1 All types of waves undergo diffraction. 8.1.1 Define the term diffraction. (2) 8.1.2 State the condition necessary for diffraction to occur in a single slit. (2) 8.2 Light of wavelength 460 nm passes through a single slit of width 7 x 10-6 m.A diffraction pattern is observed on a screen, as shown in the … Read more
Question 8
A pyramid with a square base with a side length of 16 cm is sketched below. P lies on the square base directly below A. The volume of the pyramid is 640 cm3. 8.1 Show that the perpendicular height of the pyramid, AP, is 7.5 cm. (2) 8.2 Hence, determine the total surface area of … Read more
Question 8
8.1 Define an acid in terms of the Lowry-Brønsted theory. (2) 8.2 Consider the following acid-base reaction: H2PO4+ NH3 → HPO42- + NH4+ 8.2.1 Identify the conjugate acid-base pairs in the above reaction. (4) 8.2.2 Define the term ampholyte. (1) 8.2.3 Choose an ampholyte in the above reaction. (2) 8.3 Ten grams (10 g) of … Read more