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V2 is less than V1
johnmulu answered the question on April 19, 2017 at 13:39
- Fig. 9 shows a Bunsen burner.(Solved)
Fig. 9 shows a Bunsen burner.
![frequency4192017428.jpg](/questions/uploads/frequency4192017428.jpg)
Use Bernoulli's principle to explain how air is drawn into the burner, when, the gas tap is opened.
Date posted: April 19, 2017. Answers (1)
- Figure 12 shows a displacement - time graph for a progressive wave(Solved)
Figure 12 shows a displacement - time graph for a progressive wave
![frequency41920174210001.jpg](/questions/uploads/frequency41920174210001.jpg)
i) State the amplitude of the wave
ii) Determine the frequency of the wave.
Date posted: April 19, 2017. Answers (1)
- 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
![frequency4192017411.jpg](/questions/uploads/frequency4192017411.jpg)
Determine the frequency of the wave.
Date posted: April 19, 2017. Answers (1)
- Figure 4 shows the displacement - time graph for a certain wave(Solved)
Figure 4 shows the displacement - time graph for a certain wave
![frequency4192017416.jpg](/questions/uploads/frequency4192017416.jpg)
Determine the frequency of the wave
Date posted: April 19, 2017. Answers (1)
- 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. Answers (1)
- 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.
![9travelling4192017350.jpg](/questions/uploads/9travelling4192017350.jpg)
Date posted: April 19, 2017. Answers (1)
- 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.
![9travelling4192017311.jpg](/questions/uploads/9travelling4192017311.jpg)
Determine for the wave, the
i) Amplitude
ii) Period
iii) frequency
iv) Wavelength
Date posted: April 19, 2017. Answers (1)
- Figure 3 shows a transverse wave traveling along x-axis(Solved)
Figure 3 shows a transverse wave traveling along x-axis
![graph41920171247.jpg](/questions/uploads/graph41920171247.jpg)
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. Answers (1)
- 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.
![graph41920171239.jpg](/questions/uploads/graph41920171239.jpg)
Determine the constant of each spring.
Date posted: April 19, 2017. Answers (1)
- 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
![graph41920171233.jpg](/questions/uploads/graph41920171233.jpg)
State with a reason whether the experiment was done within the elastic limit of the spring.
Date posted: April 19, 2017. Answers (1)
- 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.
![graph41920171229.jpg](/questions/uploads/graph41920171229.jpg)
Determine the maximum weight that can be measured using the spring.
Date posted: April 19, 2017. Answers (1)
- 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.
![weight41920171223.jpg](/questions/uploads/weight41920171223.jpg)
Determine the constant of each spring
Date posted: April 19, 2017. Answers (1)
- 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.
![graph41920171241.jpg](/questions/uploads/graph41920171241.jpg)
Given that the two springs are made of same materials, give a reason why the graphs are different
Date posted: April 19, 2017. Answers (1)
- 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
![coper419201711047noimage.jpg](/questions/uploads/coper419201711047noimage.jpg)
Determine the total extension caused by the 90 N weight. (Ignore the weight of the springs and connecting rods)
Date posted: April 19, 2017. Answers (1)
- 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.
![coper419201711047.jpg](/questions/uploads/coper419201711047.jpg)
What is the reading on balance R?
Date posted: April 19, 2017. Answers (1)
- Figure 7 shows a simple electric bell circuit
(Solved)
Figure 7 shows a simple electric bell circuit
![coper4192017110124noimage.jpg](/questions/uploads/coper4192017110124noimage.jpg)
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. Answers (1)
- 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
![coper4192017110124.jpg](/questions/uploads/coper4192017110124.jpg)
State the polarity of the resulting magnet at point L
Date posted: April 19, 2017. Answers (1)
- Figure 5, shows a motor connected to a magnetic switch called a relay operated by an ordinary switch S1. Use the information in the figure to answer questions a) and b)(Solved)
Figure 5, shows a motor connected to a magnetic switch called a relay operated by an ordinary switch S1. Use the information in the figure to answer questions a) and b)
![coper41920171101.jpg](/questions/uploads/coper41920171101.jpg)
a) Explain how the relay switches on the motor when S1 is closed
b) State with a reason the effect on the motor, if the iron core is replaced with a steel core and switch S1 is put on and then off.
Date posted: April 19, 2017. Answers (1)
- Figure 3 shows a flat spring made of iron clamped horizontally on the bench over a solenoid.(Solved)
Figure 3 shows a flat spring made of iron clamped horizontally on the bench over a solenoid.
![Gclamp1109.jpg](/questions/uploads/Gclamp1109.jpg)
When the switch is closed, the spring vibrates. Explain this observation.
Date posted: April 19, 2017. Answers (1)
- Figure 8 shows a current-carrying coil in a magnetic field (Solved)
Figure 8 shows a current-carrying coil in a magnetic field
![coper41920171043.jpg](/questions/uploads/coper41920171043.jpg)
State two ways of increasing the force on the coil
Date posted: April 19, 2017. Answers (1)