= 800
Kavungya answered the question on October 17, 2019 at 10:42
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An object 10cm high is placed 30cm in front of a concave mirror. The image is 45cm in front of the mirror. Find its magnification and size of the image.
Date posted: October 17, 2019. Answers (1)
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State the polarities at the ends A and B(Solved)
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Date posted: October 17, 2019. Answers (1)
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Date posted: October 17, 2019. Answers (1)
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Date posted: October 17, 2019. Answers (1)
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Determine:
i)I) Its velocity after 1.5seconds.
II)The distance travelled in 1.5 seconds.
III)The time taken for the car to stop.
ii)Sketch...(Solved)
A car moving initially at 10m/s decelerates at 2.5m/s2
Determine:
i)I) Its velocity after 1.5seconds.
II)The distance travelled in 1.5 seconds.
III)The time taken for the car to stop.
ii)Sketch the velocity – time graph for the motion of the car up to the time the car stopped.
iii)From the graph determine the distance the car travelled before stopping.
Date posted: October 17, 2019. Answers (1)
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a)What is the thermometric liquid in this thermometer?
b)Why is it necessary for the vapour in bulb B...(Solved)
The diagram below shows a six’s maximum/ minimum thermometer.
)What is the thermometric liquid in this thermometer?
b)Why is it necessary for the vapour in bulb B to be saturated?
c)Explain how the thermometer indicates maximum and minimum temperature.
d)Indicate on the diagram the two points where the reading of the temperature shown by the
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Date posted: October 17, 2019. Answers (1)
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i)What pressure is acting on point A?
ii)What is the value of pressure difference in the...(Solved)
Use the figure below to answer the questions that follow
i)What pressure is acting on point A?
ii)What is the value of pressure difference in the instrument reading?
iii)If the atmospheric pressure is 760mm of mercury, what is the value of gas pressure?
Date posted: October 17, 2019. Answers (1)
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Date posted: October 17, 2019. Answers (1)
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Explain the observation made when air is blown at the same speed and time...(Solved)
The figure below shows two light sheets of paper arranged as shown.
Explain the observation made when air is blown at the same speed and time at points A and B.
Date posted: October 17, 2019. Answers (1)
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Distinguish between streamline and turbulent flow.
Date posted: October 17, 2019. Answers (1)
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Date posted: October 17, 2019. Answers (1)
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Date posted: October 17, 2019. Answers (1)
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Explain this using kinetic and thermal property of matter.
Date posted: October 17, 2019. Answers (1)
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State one way of increasing sensitivity of mercury in glass thermometer.
Date posted: October 17, 2019. Answers (1)
- The figure below is that of identical springs. A 60N weight is attached on the springs as shown
so that the total extension for the...(Solved)
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Date posted: October 17, 2019. Answers (1)
- A mercury barometer reads 75cmHg at the base of Mt.Kenya. Assuming that the height of
the mountain is 1088m and the average density of air...(Solved)
A mercury barometer reads 75cmHg at the base of Mt.Kenya. Assuming that the height of
the mountain is 1088m and the average density of air is 1.25kg/m3. What is the reading of the
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Date posted: October 17, 2019. Answers (1)
- The figure below is that of a uniform meter rule supported at the 30cm. A load of 5N is attached at
the 0cm mark and...(Solved)
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Date posted: October 17, 2019. Answers (1)
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Before using a vernier calipers to measure diameter of a steel ball, a student confirmed that it had a zero error of -0.03cm. The figure below shows the vernier calipers scale when in use.
State the correct diameter of the steel ball.
Date posted: October 17, 2019. Answers (1)
- A conductor through which an electric current is flowing into the paper in a magnetic field as shown in figure below.
On the same diagram sketch...(Solved)
A conductor through which an electric current is flowing into the paper in a magnetic field as shown in figure below.
On the same diagram sketch the resulting magnetic field pattern and show the direction of the resulting mechanical force F, on the conductor.
Date posted: October 3, 2019. Answers (1)
- Figure below shows a solenoid with a ferromagnetic core connected to a battery E, ammeter A and rheostat R
On the figure indicate;
(i)The direction of current...(Solved)
Figure below shows a solenoid with a ferromagnetic core connected to a battery E, ammeter A and rheostat R
On the figure indicate;
(i)The direction of current in the external circuit and around the coils.
(ii)The polarity of the resulting electromagnet
(iii)The direction of the magnetic field lines created around the solenoid
Date posted: October 3, 2019. Answers (1)