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US

4231314

Question | Answer |

Equation for average speed | average speed= distance moved/ time taken |

Equation for force | Force = mass x acceleration |

Acceleration= | acceleration= change in velocity/ time taken |

Momentum = ? | Momentum = mass x velocity |

Density = ? | Density = mass / volume |

Work done = ? | Work done = force x distance moved |

Work done = ? | Energy transferred = work done |

Kinetic energy = ? | kinetic energy = 1/2 x mass x speed2 |

GPE | GPE = mass x g x height |

Weight = ? | Weight= mass x gravitational field strength |

Pressure= ? | Pressure = force/ area |

The relationship between movement of a force and it's distance from the pivot | movement = force x perpendicular distance from the pivot |

charge = ? | charge = current × time |

Voltage = ? | Voltage = current x resistance |

electrical power= ? | electrical power = voltage × current |

wave speed = ? | wave speed = frequency × wavelength |

Relationship between voltage and turns | input (primary) voltage / output(secondary)voltage = primary turns / secondary turns |

Refractive index = ? | n= sin i / sin r angle of incidence / refraction |

Relationship between refractive index and critical angle | sin c = 1 / n |

Efficiency = ? | efficiency = useful energy output / total energy output |

Pressure difference | pressure difference = height × density × g p=h×ρ×g |

Input power = ? | input power = output power Vp Ip = Vs Is for 100% efficiency |

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