- A student touches the surface of water in a big pan at point A at regular intervals and observes
the ripples as in the diagram below....(Solved)
A student touches the surface of water in a big pan at point A at regular intervals and observes
the ripples as in the diagram below. Explain the pattern of the ripples observed.
Date posted: April 5, 2019. Answers (1)
- The following shows a diagram of displacement against time cure of a standing wave
reflected its own pith(Solved)
The following shows a diagram of displacement against time cure of a standing wave
reflected its own pith
Determine the period T of the wave.
Date posted: April 5, 2019. Answers (1)
- The figure below shows a wave profile.(Solved)
The figure below shows a wave profile.
Determine the frequency of the wave.
Date posted: April 5, 2019. Answers (1)
- Determine the frequency of the wave shown below.(Solved)
Determine the frequency of the wave shown below.
Date posted: April 5, 2019. Answers (1)
- Distinguish between diffraction and refraction of waves(Solved)
Distinguish between diffraction and refraction of waves
Date posted: April 5, 2019. Answers (1)
- If a wave is propagated at a velocity of 50m/s; determine its frequency if the distance
travelled by the wavelength in 2 cycles is 1.25m(Solved)
If a wave is propagated at a velocity of 50m/s; determine its frequency if the distance
travelled by the wavelength in 2 cycles is 1.25m
Date posted: April 5, 2019. Answers (1)
- The figure below shows two loudspeakers L1 and L2 connected to a signal generator.(Solved)
The figure below shows two loudspeakers L1 and L2 connected to a signal generator.
An observer walks along the line 0-01 (equidistant from L1 and L2) and another along the
Line AA1.Explain the observation made by each and give reasons to your answer
Date posted: April 5, 2019. Answers (1)
- State any two conditions necessary for the establishment of a stationary wave(Solved)
State any two conditions necessary for the establishment of a stationary wave
Date posted: April 5, 2019. Answers (1)
- Figure below shows the displacement of a particle in a progressive wire incident on a boundary
between deep and shallow region.(Solved)
Figure below shows the displacement of a particle in a progressive wire incident on a boundary
between deep and shallow region.
Complete the diagram to show what is observed after bounding. (Assume no loss of energy)
Date posted: April 5, 2019. Answers (1)
- The figure below shows a wave profile with velocity 340m/s(Solved)
The figure below shows a wave profile with velocity 340m/s
a)Determine:
(i) The frequency of the wave
(ii) The period of the wave
(b) On the same diagram above sketch a wave profile of another wave with same
frequency, greater amplitude but 180o out of phase with the one in (a)
Date posted: April 5, 2019. Answers (1)
- The diagram below represents plane wave fronts produced in a ripple tank.(Solved)
The diagram below represents plane wave fronts produced in a ripple tank.
Given that the distance AB is 15 cm, determine the wavelength of the wave
Date posted: April 5, 2019. Answers (1)
- The figure below shows waves starting from two coherent sources S1 and S2.(Solved)
The figure below shows waves starting from two coherent sources S1 and S2.
What would be observed at P if the waves are
(i) light waves. (ii) Sound waves.
Date posted: April 5, 2019. Answers (1)
- The figure below shows circular waves approaching a straight reflector. Complete the sketch
to show what happens when the waves hit the reflector.(Solved)
The figure below shows circular waves approaching a straight reflector. Complete the sketch
to show what happens when the waves hit the reflector.
Date posted: April 5, 2019. Answers (1)
- The figure below shows a piston inside a glass tube(Solved)
The figure below shows a piston inside a glass tube
i)Air inside is made to vibrate producing a fundamental note. Find the fundamental frequency
to be produced
ii)If the glass tube is made open by removing the piston and opening the other end, what is
the new fundamental frequency?
Date posted: April 5, 2019. Answers (1)
- Calculate the pressure of the gas supply (Atmospheric pressure = 1.0x105Pa)(Solved)
Calculate the pressure of the gas supply (Atmospheric pressure = 1.0x105Pa)
Date posted: April 5, 2019. Answers (1)
- State a reason why a closed tube or pipe produces less quality sound than an open one.(Solved)
State a reason why a closed tube or pipe produces less quality sound than an open one.
Date posted: April 5, 2019. Answers (1)
- 500g of a metal is heated to 100oC and then placed in a 200g mass of water at 15oC. If the final temperature rises to...(Solved)
500g of a metal is heated to 100oC and then placed in a 200g mass of water at 15oC. If the final temperature rises to 21oC, calculate the specific heat capacity of the metal.
(Specific heat capacity of water = 4200J/kg
Date posted: April 5, 2019. Answers (1)
- Use a ray diagram to show how short sightedness in a human eye can be corrected.(Solved)
Use a ray diagram to show how short sightedness in a human eye can be corrected.
Date posted: April 5, 2019. Answers (1)
- Figure 2 shows an object O placed in front of a concave ion with principal foci F and F1.
Construct a ray diagram to locate the...(Solved)
Figure 2 shows an object O placed in front of a concave ion with principal foci F and F1.
Construct a ray diagram to locate the position of the image
Date posted: April 5, 2019. Answers (1)
- Water of mass 200g at temperature of 60°Cis put in a well lagged copper calorimeter of mass
80g. A piece of ice at 0° C and...(Solved)
Water of mass 200g at temperature of 60°Cis put in a well lagged copper calorimeter of mass
80g. A piece of ice at 0° C and mass 20g is placed in the calorimeter and the mixture stirred
gently until all the ice melts. The final temperature, T, of the mixture is then measured.
Determine:
i) The heat absorbed by the melting ice at O°C
ii) The heat absorbed by the melted ice (water) to rise to temperature T (answer may be
given in terms of T)
iii) The heat lost by the warm water and the calorimeter (answer may be given in terms of T)
iv) The final temperature of the mixture
Date posted: April 5, 2019. Answers (1)