Physics 0.0 / 5 ? PhysicsElectromagnetismGCSEAQA Created by: meggyp97Created on: 07-03-14 12:23 What is the equation of POWER? POWER = workdone ÷ time taken 1 of 10 What is POWER? The rate at which we change energy (the heavier the object, the more powerful) 2 of 10 What is MOMENTUM measument of difficulty to chnage speed and direction of an object 3 of 10 What is the equation for MOMENTUM? Momentum = mass x velocity (P=mv) 4 of 10 What is the equation for VELOCITY? Velocity = distance (m) ÷ time taken(s) 5 of 10 What is the equation for WORKDONE? workdone = force(N) x distance(m) 6 of 10 How does an object become electrically charged? Negative electrons ONLY -transferred from an atom charged - when negative electrons are gained or removed from an atom 7 of 10 Rub an object more = more electrically charged. True or False? Why? True - more rubs = more electrically charged - but does reach a maximum charge 8 of 10 Only electrical insulators can become statically charged. True or False? True - Metals can not become charged 9 of 10 Charged Objects. Which repel and which attract? 2 x negative = REPEL 2 x positive = repel 1 x negative & 1 x positive = ATTRACT 10 of 10
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