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Quiz

AS Level Physics U6 Introductory Quiz

Jeffrey Piggott 6 perguntas Atualizado em 28 out 2018

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Perguntas do quiz (6)

  1. 1 What is the approximate kinetic energy of an Olympic athlete when running at maximum speed during a 100 m race?
    1. AA 400 J
    2. BB 4000 J
    3. CC 40 000 J
    4. DD 400 000 J
  2. 2Two identical, perfectly elastic spheres have the same mass m. They travel towards each other with the same speed v along a horizontal frictionless surface.

    Which statement about the sum of the kinetic energies of the spheres is correct?     Imagem da pergunta 2
    1. AA The sum of their kinetic energies before impact is zero.
    2. BB The sum of their kinetic energies before impact is 1/2 mv^2.
    3. CC The sum of their kinetic energies after impact is zero.
    4. DD The sum of their kinetic energies after impact is mv^2.
  3. 3A piston in a gas supply pump has an area of 500 cm2 and it moves a distance of 30 cm during
    one stroke.
    The pump moves the gas against a fixed pressure of 4000 Pa.

    How much work is done by the piston during one stroke?
    1. AA 60 J
    2. BB 6.0 × 10^3 J
    3. CC 6.0 × 10^5 J
    4. DD 6.0 × 10^7 J
  4. 4A railway engine accelerates a train of total mass 1200 tonnes (1 tonne = 1000 kg) from rest to a speed of 75 m s^–1.

    How much useful work must be done on the train to reach this speed?
    1. AA 1.7 × 10^6 J
    2. BB 3.4 × 10^6 J
    3. CC 1.7 × 10^9 J
    4. DD 3.4 × 10^9 J
  5. 5The diagram shows a hydroelectric power station.
    The reservoir is linked to the turbines by a pipe of uniform cross-sectional area. Water flows from the reservoir, through the pipe and through the turbines at a constant rate.

    Which statement about the change of energy of the water as it moves from X to Y is correct?
    1. AA It gains both gravitational potential energy and kinetic energy.
    2. BB It loses gravitational potential energy and gains elastic potential energy.
    3. CC It loses gravitational potential energy and gains kinetic energy.
    4. DD It loses both elastic potential energy and gravitational potential energy.
  6. 6A concrete cube of side 0.60 m and uniform density 2.0 × 10^3 kg.m^–3 is lifted 5.0 m vertically by a crane.

    What is the change in potential energy of the cube?
    1. AA 2.2 kJ
    2. BB 21 kJ
    3. CC 59 kJ
    4. DD 450 kJ

Informações

Descrição
Quiz for AS Level Physics lesson 1 on Unit 6 Energy, work & power.
Idioma
English
Visualizações
180
Histórico
Criado em 28 out 2018 · atualizado em 28 out 2018
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