V2, V4, V1, V3
johnmulu answered the question on April 19, 2017 at 14:03
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Figure 19 shows a pith ball placed in a flask. When a jet of air is blown over the mouth of the flask as shown, the pith ball is observed to rise from bottom.
(Solved)
Figure 19 shows a pith ball placed in a flask. When a jet of air is blown over the mouth of the flask as shown, the pith ball is observed to rise from bottom.
Explain this observation
Date posted:
April 19, 2017
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Answers (1)
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A student holds a sheet of paper at one end so that it hangs in the position A as shown in Figure 14
(Solved)
A student holds a sheet of paper at one end so that it hangs in the position A as shown in Figure 14
If the cross-sectional area A1 at P is less than A2 at Q, state how the liquid velocity V2 at Q compares with velocity V1 at P.
Date posted:
April 19, 2017
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Answers (1)
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Figure 1 shows a section of a pipe PQ. A constant pressure difference maintains a streamline flow of a liquid in the pipe.
(Solved)
Figure 1 shows a section of a pipe PQ. A constant pressure difference maintains a streamline flow of a liquid in the pipe.
If the cross-section area A1 at P is less than A2 at Q, state how the liquid velocity V2 at Q compares with velocity V1 at P.
Date posted:
April 19, 2017
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Answers (1)
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Fig. 9 shows a Bunsen burner.
(Solved)
Fig. 9 shows a Bunsen burner.
Use Bernoulli's principle to explain how air is drawn into the burner, when, the gas tap is opened.
Date posted:
April 19, 2017
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Answers (1)
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Figure 12 shows a displacement - time graph for a progressive wave
(Solved)
Figure 12 shows a displacement - time graph for a progressive wave
i) State the amplitude of the wave
ii) Determine the frequency of the wave.
Date posted:
April 19, 2017
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Answers (1)
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Figure 2 shows how the displacement varies with time for a certain wave
(Solved)
Figure 2 shows how the displacement varies with time for a certain wave
Determine the frequency of the wave.
Date posted:
April 19, 2017
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Answers (1)
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Figure 4 shows the displacement - time graph for a certain wave
(Solved)
Figure 4 shows the displacement - time graph for a certain wave
Determine the frequency of the wave
Date posted:
April 19, 2017
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Answers (1)
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A long coil is attached to a vibrating blade as shown in Figure
(Solved)
A long coil is attached to a vibrating blade as shown in Figure
State the type of mechanical wave generated by the set-up and mark alongside the coil, the length corresponding to the wavelength, wavelength of the wave.
Date posted:
April 19, 2017
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Answers (1)
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Figure 10 represents a transverse wave of frequency 5 Hz traveling in the X direction. Determine the speed of the wave.
(Solved)
Figure 10 represents a transverse wave of frequency 5 Hz traveling in the X direction. Determine the speed of the wave.
Date posted:
April 19, 2017
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Answers (1)
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Figure 5 shows the displacement time graph of a wave travelling at 200 cm/s.
(Solved)
Figure 5 shows the displacement time graph of a wave travelling at 200 cm/s.
Determine for the wave, the
i) Amplitude
ii) Period
iii) frequency
iv) Wavelength
Date posted:
April 19, 2017
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Answers (1)
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Figure 3 shows a transverse wave traveling along x-axis
(Solved)
Figure 3 shows a transverse wave traveling along x-axis
i) Determine the:
I. Wavelength of the wave
II. Amplitude of the wave
ii) If the time taken by the wave to move from O to A is 0.90 seconds, determine the:
I. frequency of the wave
II. Speed of the wave
Date posted:
April 19, 2017
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Answers (1)
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The three springs shown in figure 7 are identical and have negligible weight. The extension produced on the system of springs is 20 cm.
(Solved)
The three springs shown in figure 7 are identical and have negligible weight. The extension produced on the system of springs is 20 cm.
Determine the constant of each spring.
Date posted:
April 19, 2017
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Answers (1)
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Table 1 shows the results of an experiment carried out to study the properties of a spring
(Solved)
Table 1 shows the results of an experiment carried out to study the properties of a spring
State with a reason whether the experiment was done within the elastic limit of the spring.
Date posted:
April 19, 2017
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Answers (1)
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Figure 2 shows a spring balance. Its spring constant is 125Nm-1. The scale spreads over a distance of 20 cm.
(Solved)
Figure 2 shows a spring balance. Its spring constant is 125Nm-1. The scale spreads over a distance of 20 cm.
Determine the maximum weight that can be measured using the spring.
Date posted:
April 19, 2017
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Answers (1)
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The three springs shown in Figure 5 are identical and have negligible weight. The extension produced on the system of springs is 20 cm.
(Solved)
The three springs shown in Figure 5 are identical and have negligible weight. The extension produced on the system of springs is 20 cm.
Determine the constant of each spring
Date posted:
April 19, 2017
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Answers (1)
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The graph in Fig. 7 represent the relations between extension, e and mass, m added on two springs x and y.
(Solved)
The graph in Fig. 7 represent the relations between extension, e and mass, m added on two springs x and y.
Given that the two springs are made of same materials, give a reason why the graphs are different
Date posted:
April 19, 2017
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Answers (1)
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The spiral spring shown in Figure 4 are identical. Each spring has a spring constant k = 300 N/m
(Solved)
The spiral spring shown in Figure 4 are identical. Each spring has a spring constant k = 300 N/m
Determine the total extension caused by the 90 N weight. (Ignore the weight of the springs and connecting rods)
Date posted:
April 19, 2017
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Answers (1)
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Two identical spring balances R and S each weighing 0.5 N are arranged as shown in Figure 2.
(Solved)
Two identical spring balances R and S each weighing 0.5 N are arranged as shown in Figure 2.
What is the reading on balance R?
Date posted:
April 19, 2017
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Answers (1)
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Figure 7 shows a simple electric bell circuit
(Solved)
Figure 7 shows a simple electric bell circuit
i) Name the parts labeled:
I) D
II) E
ii) When the switch is closed, the hammer hits the gong repeatedly. Explain why?
I) The hammer hits the gong.
II) The hammer hits the gong repeatedly
Date posted:
April 19, 2017
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Answers (1)
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Figure 7 shows two similar coils P and Q around the end L and M of a piece of soft iron. A steady current passes through the coils
(Solved)
Figure 7 shows two similar coils P and Q around the end L and M of a piece of soft iron. A steady current passes through the coils
State the polarity of the resulting magnet at point L
Date posted:
April 19, 2017
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Answers (1)