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CHAPTER 3 FORCES AND PRESSURE

Quiz by WINNIE LIM

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18 questions
Show answers
  • Q1
    Diagram 1 shows a watermelon and a durian of the same mass placed in two identical plastics bags. Plastic bag containing the durian tear more easily because
    Question Image
    the pressure exerted by the durian on the plastic bag is larger
    the force exerted by the durian on the plastic bag is larger
    the surface of the durian is rougher
    the surface area of the durian that is in contact with the plastic bag is larger
    45s
  • Q2
    Diagram 3 shows a block with the dimensions of 2 m × 4 m × 10 m. The weight of the block is 100 N. Find the minimum pressure that can be exerted by the block on the floor.
    Question Image
    5.0 N m-2
    12.5 N m-2
    2.5 N m-2
    10.0 N m-2
    60s
  • Q3
    Diagram 9 shows two identical containers containing liquid X and liquid Y with 12 cm height and 17 cm height respectively. Both containers produce the same water spurt. If the density of liquid X is 1.7 g cm−3, find the density of liquid Y.
    Question Image
    0.83 g cm−3
    1.20 g cm−3
    2.40 g cm−3
    0.60 g cm−3
    120s
  • Q4
    Liquid pressure is affected by the diameter of the tube.
    false
    true
    True or False
    45s
  • Q5
    What happens to the gas molecules in a sealed jar at room temperature when the jar is put inside a refrigerator?
    the distance between the gas molecules decreases
    The mass of the gas molecules decreases
    The potential energy of the gas molecules increases
    The size of the gas molecules decreases
    45s
  • Q6
    What is the value of atmospheric pressure in cm Hg
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    Type an Answer
    45s
  • Q7
    Diagram 26 shows a brake system used in a car. State the principle involved.
    Question Image
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    Type an Answer
    60s
  • Q8
    Diagram 29 shows an hot air balloon floating at a constant height. The upthrust exerted on the hot air balloon is equal to
    Question Image
    the volume of the hot air balloon
    the density of the hot air balloon
    the density of the hot air balloon
    the weight of the hot air balloon
    45s
  • Q9
    Diagram 35 shows a wing in the shape of an aerofoil moves through air. Which position A, B, C or D, experiences the highest pressure?
    Question Image
    B
    C
    D
    A
    45s
  • Q10
    Why the candle flames approach one another when air is blown between them?
    A vacuum area exists between the candle flames
    Pressure between the candle flames becomes low
    Hot air at the bottom of the candles rises
    Density of air between the candle flames becomes low
    45s
  • Q11
    Diagram shows a load is attached to a spring balance and a beaker of water is put on a compression balance. What will happen to the reading of compression balance when the load is immersed completely in the water?
    Question Image
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    Type an Answer
    60s
  • Q12
    A block of metal of mass 0.20 kg and volume 2.5 × 10 − 4 m3 is dropped into water. How does the metal block move in the water? [Density of water = 1 000 kg m− 3]
    It moves upwards with a constant velocity.
    It moves downwards with a constant velocity.
    It moves downwards with a fixed acceleration.
    It moves upwards with a fixed acceleration.
    120s
  • Q13
    Diagram shows that a bottle which contains a few pieces of stone is floating vertically in a solution P.
    Question Image
    P < Q
    P = Q
    P > Q
    45s
  • Q14
    Diagram shows a hydraulic system with two pistons. What is the mass of load X?
    Question Image
    0.4 kg
    0.04 kg
    2.5 kg
    25.0 kg
    120s
  • Q15
    Diagram (a) shows the water levels in a water manometer before it is connected to a gas supply. Diagram (b) shows the water levels in the manometer when it is connected to a gas supply. Atmospheric pressure supports 10 m of water column in a water barometer. What is the pressure of the gas supply? (Density of water = 1 000 kg m–3)
    Question Image
    1.05 × 10 ^ 5 Pa
    1.02 × 10 ^ 5 Pa
    1.04 x 10 ^ 5 Pa
    5.00 x 10 ^5 Pa
    120s

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