It is the acceleration generated when an object is moving in a circular motion with an attraction towards the center of rotation.
Githiari answered the question on September 18, 2017 at 08:43
- A measuring cylinder contains 20cm3 of water. 10cm3 of salt is added and stirred. Explain why the volume is not 30cm^3.(Solved)
A measuring cylinder contains 20cm3 of water. 10cm3 of salt is added and stirred. Explain why the volume is not 30cm3.
Date posted: September 18, 2017. Answers (1)
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Define the following terms as applied to curved mirrors.
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b) Centre of curvature.
c) Principal focus.
Date posted: September 16, 2017. Answers (1)
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Date posted: September 16, 2017. Answers (1)
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Date posted: September 16, 2017. Answers (1)
- A form two student in Afraha High school had two identical metal cans. Can A was painted dull black
while B was shinny. She fitted on...(Solved)
A form two student in Afraha High school had two identical metal cans. Can A was painted dull black
while B was shinny. She fitted on each of them a thermometer through the lids. She added equal
volumes of hot water at 70°c simultaneously. State and explain the observation made after 20
minutes.
Date posted: September 16, 2017. Answers (1)
- When mercury in a glass thermometer is used to measure the temperature of hot water, it is observed
that the mercury level first drops before beginning...(Solved)
When mercury in a glass thermometer is used to measure the temperature of hot water, it is observed
that the mercury level first drops before beginning to rise. Explain.
Date posted: September 16, 2017. Answers (1)
- A metal ball is cooled.State how the density of the ball will be affected(Solved)
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Date posted: September 16, 2017. Answers (1)
- A pipe of diameter 8.4cm is connected to another pipe of diameter 3.5cm. The speed of the water in
the bigger pipe is 1.8m/s. Find...(Solved)
A pipe of diameter 8.4cm is connected to another pipe of diameter 3.5cm. The speed of the water in
the bigger pipe is 1.8m/s. Find the speed of the water in the smaller pipe
Date posted: September 16, 2017. Answers (1)
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Explain how air enters the barrel of a Bunsen burner when the gas supply is opened.
Date posted: September 16, 2017. Answers (1)
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Date posted: September 16, 2017. Answers (1)
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Date posted: September 16, 2017. Answers (1)
- In an experiment to determine the specific latent heat of water, steam of 100°C was passed into water
Contained in a well lagged copper calorimeter....(Solved)
In an experiment to determine the specific latent heat of water, steam of 100⁰C was passed into water
Contained in a well lagged copper calorimeter. The following measurements were made:
-Mass of calorimeter =40g
-Mass of water + calorimeter = 135g.
-Final mass of calorimeter + water +condensed steam =148g
-Final temperature of the mixture =52⁰C.
Given that specific heat capacity of water = 4200Jkg^-1 k^-1
Specific heat capacity of copper = 390Jkg^-1 k^-1.
Determine the:
i)Mass of condensed steam
ii)The heat gained by the calorimeter and water if the initial temperature of the calorimeter and water
is 24⁰C
iii)Given that LV is the specific latent heat of vaporization of steam, write an expression for the heat
given out by steam.
iv)Determine the value of LV in (iii) above.
v)State the assumption made in the experiment.
Date posted: September 16, 2017. Answers (1)
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Explain how heat loss by radiation is minimized in a vacuum flask.
Date posted: September 16, 2017. Answers (1)