Revision Set 9 Show the force on the cannons from Is mains electricity ac or 1 the ball AND the 6 dc? force from the ball on the cannon What units are Which type of 2 used to measure 7 radioactivity has a acceleration? negative charge? This cyclist has stopped pedalling. A radioactive source has Add arrows to an activity of 120 Sv and a 3 show the 8 half life of 12 years. How horizontal forces. long will it take for the What will happen activity to drop to 15 Sv? to their speed? Using the word electrons(s) explain Draw a diagram to show the difference 4 9 the start of a nuclear between fission chain reaction. conductors and insulators Resistors get hot A 60 W laptops runs on when a 5 10 6V. What current does it current through take? them. Why?
Revision Set 9 1 Show the force on the cannons from the ball AND the force from the ball on the cannon 6 Is mains electricity ac or dc? 2 What units are used to measure acceleration? 7 Which type of radioactivity has a negative charge? 3 This cyclist has stopped pedalling. Add arrows to show the horizontal forces. What will happen to their speed? 8 A radioactive source has an activity of 120 Sv and a half life of 12 years. How long will it take for the activity to drop to 15 Sv? 4 Using the word electrons(s) explain the difference between conductors and insulators 9 Draw a diagram to show the start of a nuclear fission chain reaction. 5 Resistors get hot when a current through them. Why? 10 A 60 W laptops runs on 6V. What current does it take?