Form 1 Physics Exam Questions and Answers on Pressure

Form 1 Physics Exam Standard Questions and Answers on Pressure.

Lessons (21)     SHARE

• 1.    The figure below shows a brick of mass 8.0kg standing upright on the ground as shown. Calculate the pressure it exerts on the ground. #(g = 10Nkg^(-1))#
  2m 48s

• 2.    The figure below shows a Bunsen burner. Explain how air is drawn into the burner when the gas tap is opened.
  1m 11s

• 3.    A vacuum pump was used to pump out air from the glass immersed in liquids as shown below After sometime the level of water rose to position X. Mark Y the corresponding position for the paraffin level. Give a reason for your answer.
  2m 49s

• 4.    The figure below is of a gas jar completely filled with water and covered with a soft cardboard. State and explain the observation made when the set – up is suddenly inverted.
  0m 56s

• 5.    The reading on a mercury barometer at Mombasa is 760mm. Calculate the pressure at Mombasa (density of mercury is #1.36times10^4 Kgm^(-3) )#
  1m 45s

• 6.    The diagram below shows a flask fitted with a glass tube dipped into a beaker containing water at room temperature. The cork fixing the glass tube is tight. State with reason what would be observed if cold water is poured on to the flask.
  1m 3s

• 7.    The figure below shows some air trapped in a glass tube, the tube is inverted in a dish containing mercury. Given that the atmospheric pressure is 760 mmHg and the pressure due to the mercury column in the glass is 550 mmHg determine the pressure of the air trapped in the tube in mmHg.
  1m 52s

• 8.    Explain why it is dangerous for two ships to travel very close to each other.
  1m 11s

• 9.    The height of mercury in a barometer at a place is 62 cm. What would be the height of a column of paraffin in the barometer at the same place? (Density of paraffin = #8.0 times 10^2# kg/#m^3#, density of mercury = 13600 kg/#m^3#).
  2m 45s

• 10.    A car weighs 12000N. i).What is the force acting on one tyre if the weight is evenly distributed amongst the tyres? ii).If the area of contact of tyre is #80cm^2#.Calculate the pressure of the air in the tyre.
  2m 15s

• 11.    Find the total pressure experienced by a diver 8 meters below the sea surface. Take; Atmospheric pressure = 103360N Density of sea water = 1030 kg/#m^3#
  2m 1s

• 12.    State how the pressure in a moving fluid varies with the speed of the fluid.
  0m 33s

• 13.    A basic laboratory rule states that “Never heat a glass bottle with the stopper on.” Explain the purpose of this precaution.
  0m 53s

• 14.    The figure below shows a light pitch ball at the bottom of a container. State and explain the observations made when air is blown over the mouth of the bottle.
  0m 58s

• 15.    The figure below shows a sheet of paper rolled into a tube When a stream of air at high speed is blown into the tube, the tube collapses. Explain this observation.
  0m 38s

• 16.    An astronaut climbing a very high mountain is likely to experience nose bleeding. Explain why this
  0m 26s

• 17.    The figure below shows the apparatus used to examine the pressure of a gas. Taking density of mercury to be 13600kg/#m^3# and standard atmospheric pressure is 100,000N/#m^2#, calculate gas pressure
  2m 43s

• 18.    A girl in a school in Nakuru plans to make a barometer using a liquid of density 1.25g/#cm^3#. If the atmospheric pressure in the school is 93750N/#m^2#. Determine the minimum length of the tube that she will require?
  2m 26s

• 19.    The total weight of a car with passengers is 2500N. The area of contact of each of the FOUR tyres with the ground is #0.025m^2#. Determine the minimum car tyre pressure.
  1m 21s

• 20.    A block of density 8900kg/#m^3# measures 2cm by 5cm by 7cm is placed horizontally on a flat surface. Determine the difference between the maximum and minimum pressure.
  4m 2s

• 21.    Testing
  0m 0s

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