Hint | Answer |

The acceleration of a body moving in a circle with constant speed acting towards the centre of the circle. | |

The property of a material that determines the intensity of ultrasound refracted at a boundary with another material. | |

Unit of magnetic flux density. 1 _ is the magnetic flux density that will produce a force a force of 1N on 1m of wire carrying a current of 1A perpendicular to the direction of the | |

Unit of magnetic flux. 1 _ is the flux when a magnetic flux density of 1T passes through an area of 1m^2 at right angles | |

The rate of change of the momentum of an object is directly proportional to the resultant force acting upon it and the change in momentum is in the same direction as the force. | |

The _ _ _ at any point is the force acting per unit mass at that point. | |

The change in wavelength caused by the relative motion between the wave source and an observer. | |

The use of gamma photons produced when positrons annihilate with electrons inside the body to map out active areas within the body. | |

Unit of capacitance. | |

The time taken for the charge remaining on a capacitor to fall to 1/e of its original value. | |

The situation if the mean density of the universe is equal to the critical density. The galaxies in the universe will slow down but never quite stop. | |

A device that has a greater number of wire turns on the output side than the input side and so increases the emf and reduces the electric current on the output side. | |

When the acceleration of an object is proportional to its displacement and the acceleration is in the opposite direction to the displacement. | |

A constant giving the number of particles in 1 mol of a substance. | |

The energy required to raise the temperature of 1kg of a substnace of 1K. | |

A device that converts a non-electrical signal into an electrical signal. | |

A gas that has internal energy only in the form of random kinetic energy. | |

The product of magnetic flux density and the area at right angles to the flux. | |

Two stars in orbit around their common centre of gravity. | |

The direction of any induced current is in a direction that opposes the flux change that causes it. | |

Physical law stating that in the absence of external forces the total momentum of a system remains constant. | |

A constant used to calculate intensity of x-rays as they pass through a material. | |

A region of space where a charged particle experiences a force. | |

The period of a planet orbiting the sun squared is proportional to the mean radius of its orbit cubed. | |

The process when a particle and antiparticle interact and their combined mass is converted to energy. | |

The force that is responsible for beta decay. It occurs between leptons during hadron decay. | |

The volume of a fixed mass of gas is inversely proportional to pressure exerted on it, provided temperature remains constant. | |

The average density of the universe above which the universe will collapse, and below which the universe will expand forever. | |

The apparent increase in wavelength caused when luminous objects move away from the observer. | |

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