A submarine has a hollow part filled with air and its also large in volume. The large volume displaces a lot of water making the up thrust large hence the submarine floats A piece of iron displaces small volume of water whose up thrust can not support it weight hence it sinks.
sharon kalunda answered the question on September 26, 2019 at 15:14
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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- Mass of calorimeter = 55g
- Initial mass of water = 75g
- Final mass of calorimeter + water + condensed steam = 133g
- Final temperature of the mixture = 30ºC
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(i) mass of condensed steam.
heat gained by the calorimeter and water if the initial temperature of the
calorimeter + water = 20ºC.
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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The figure shows masses X, Y and Z placed at different points on a turn table. The turn table is rotated at different angular velocities.
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Date posted: September 26, 2019. Answers (1)
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Mass of empty density bottle = 20g
Mass of bottle filled with...(Solved)
In an experiment to determine the density of a liquid, the following readings were made.
Mass of empty density bottle = 20g
Mass of bottle filled with water = 70g
Mass of bottle filled with a liquid = 695g
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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A pulse-echo sounder is used by fishing boat to locate a shoal of fish in water. The sounder sends sound of frequency 21KHz and wavelength of 7.5cm. if the echo is received after 0.4seconds, determine how far the shoal of fish is from the base of the boat.
Date posted: September 26, 2019. Answers (1)
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Sketch a graph of displacement against time for a transverse wave of frequency of 50Hz of at least two cycles with amplitude 2cm.
Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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Various isotopes of an element X can be distinguished by using the symbol
what do the symbols A and Z? stand for.
Date posted: September 26, 2019. Answers (1)
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Complete the ray diagram below and state one characteristic of the image formed by the following convex lens.
Date posted: September 26, 2019. Answers (1)
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Date posted: September 26, 2019. Answers (1)
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You are provided with a long steel rod shown below.
Using a diagram, describe how you would magnetise end A to obtain a south pole using an electric current.
Date posted: September 26, 2019. Answers (1)
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The figure below shows a CRO screen display trace when the Y-amplication control and time base setting are 100mV and 0.8ms/cm respectively.
Calculate:
a) The peak potential difference.
b) The frequency of the signal.
Date posted: September 26, 2019. Answers (1)