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- A soft iron bar AB is placed in a magnetic field of a horse shoe magnet as shown below.(Solved)
A soft iron bar AB is placed in a magnetic field of a horse shoe magnet as shown below.
![pic30920191016.png](/questions/uploads/pic30920191016.png)
What are the polarities of A and B.
Date posted: September 30, 2019. Answers (1)
- State two differences between sound waves and microwaves.(Solved)
State two differences between sound waves and microwaves.
Date posted: September 30, 2019. Answers (1)
- A current carrying wire is placed above a compass needle as shown in the figure below.If the current flows in the direction A to B,...(Solved)
A current carrying wire is placed above a compass needle as shown in the figure below.If the current flows in the direction A to B, show in the diagram the deflection of the compass needle.
![pic30920191009.png](/questions/uploads/pic30920191009.png)
Date posted: September 30, 2019. Answers (1)
- The figure below shows a bulb hydrometer.(Solved)
The figure below shows a bulb hydrometer.
![pic30920191003.png](/questions/uploads/pic30920191003.png)
i) State the principle in the hydrometer.
ii) Explain why the hydrometer has a weighted bulb and narrow stem.
Date posted: September 30, 2019. Answers (1)
- Give a reason why when a passenger jumps from a floating boat, the boat moves backwards.(Solved)
Give a reason why when a passenger jumps from a floating boat, the boat moves backwards.
Date posted: September 30, 2019. Answers (1)
- A trailer of mass 30 tonnes travelling at a velocity of 72km/h runs onto a stationary bus of mass 10 tonnes.The impact takes 0.5 seconds...(Solved)
A trailer of mass 30 tonnes travelling at a velocity of 72km/h runs onto a stationary bus of mass 10 tonnes.The impact takes 0.5 seconds before the two vehicles move off together at a constant velocity for 15 seconds. Determine:
i) The common velocity.
ii) The distance moved after the impact.
iii) The impulsive force on the trailer on impact.
Date posted: September 30, 2019. Answers (1)
- The figure below shows a trolley moving on a circular rail with a vertical plane, given that the mass of the trolley is 250g and...(Solved)
The figure below shows a trolley moving on a circular rail with a vertical plane, given that the mass of the trolley is 250g and the radius of the rail is 1.6m.
![pic3092019940.png](/questions/uploads/pic3092019940.png)
i) Determine the minimum velocity at which trolley passes point X.
ii) Find the angular velocity at point Z.
iii) The force exerted on the rail at this point.
Date posted: September 30, 2019. Answers (1)
- What does study of thermodynamics entails?(Solved)
What does study of thermodynamics entails?
Date posted: September 30, 2019. Answers (1)
- A tall building has two barometers, one at the ground floor reading 750mmHg and the other at the top reading 748mmHg. Determine the height of...(Solved)
A tall building has two barometers, one at the ground floor reading 750mmHg and the other at the top reading 748mmHg. Determine the height of the building.
Date posted: September 30, 2019. Answers (1)
- The figure below shows a thermometer used by a doctor to determine the temperature of a patient. Why is it difficult to work with this...(Solved)
The figure below shows a thermometer used by a doctor to determine the temperature of a patient. Why is it difficult to work with this thermometer?
![pic3092019854.png](/questions/uploads/pic3092019854.png)
Date posted: September 30, 2019. Answers (1)
- A uniform meter rule is balanced as shown in the figure below.By displacement method, the immersed object is found to occupy 13.5cm3. Determine the density...(Solved)
A uniform meter rule is balanced as shown in the figure below.By displacement method, the immersed object is found to occupy 13.5cm3. Determine the density of the liquid in SI units.
![pic3092019849.png](/questions/uploads/pic3092019849.png)
Date posted: September 30, 2019. Answers (1)
- The figure below shows a marble placed on an inverted bowl.State and explain the type of equilibrium the marble is.(Solved)
The figure below shows a marble placed on an inverted bowl.State and explain the type of equilibrium the marble is.
![pic3092019840.png](/questions/uploads/pic3092019840.png)
Date posted: September 30, 2019. Answers (1)
- Water flows through a narrow pipe of radius 6cm connected to another pipe of radius 9cm. If the speed of water in the narrow pipe...(Solved)
Water flows through a narrow pipe of radius 6cm connected to another pipe of radius 9cm. If the speed of water in the narrow pipe is 3m/s, determine the speed of water in the wider section.
Date posted: September 30, 2019. Answers (1)
- The springs in figure below are identical.The extension produced in A is 4cm. What is the extension in B?(Solved)
The springs in figure below are identical.The extension produced in A is 4cm. What is the extension in B?
![pic3092019831.png](/questions/uploads/pic3092019831.png)
Date posted: September 30, 2019. Answers (1)
- The water level in a burette is 20.3cm3. 50 drops of water each of volume 0.1cm3 are added to the water in the burette. What...(Solved)
The water level in a burette is 20.3cm3. 50 drops of water each of volume 0.1cm3 are added to the water in the burette. What is the final reading of the burette?
Date posted: September 30, 2019. Answers (1)
- A 60 litre giant density bottle weighs 100N when empty. What will be its mass when filled with liquid W whose density is 0.72g/cm3? (g=10N/kg)(Solved)
A 60 litre giant density bottle weighs 100N when empty. What will be its mass when filled with liquid W whose density is 0.72g/cm3? (g=10N/kg)
Date posted: September 27, 2019. Answers (1)
- The figure below shows a set used in a physics demonstration.(Solved)
The figure below shows a set used in a physics demonstration.
![pic27920191632.png](/questions/uploads/pic27920191632.png)
Briefly suggest two conclusions that may be drawn from the experiment.
Date posted: September 27, 2019. Answers (1)
- On increasing the temperature of a fixed mass of a gas its pressure was noted to increase. Explain(Solved)
On increasing the temperature of a fixed mass of a gas its pressure was noted to increase. Explain
Date posted: September 27, 2019. Answers (1)
- A load was raised using the system shown below. The system was then modified as in (b) and used to raise the same load.(Solved)
A load was raised using the system shown below. The system was then modified as in (b) and used to raise the same load.
![pic27920191542.png](/questions/uploads/pic27920191542.png)
State and explain the change in efficiency
Date posted: September 27, 2019. Answers (1)
- A body of mass 25kg moving with uniform accelaration has an initial momentum of 60kgm/s and after 10s the momentum is 90kgm/s. calculate the acceleration...(Solved)
A body of mass 25kg moving with uniform accelaration has an initial momentum of 60kgm/s and after 10s the momentum is 90kgm/s. calculate the acceleration of the body
Date posted: September 27, 2019. Answers (1)