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Electromagnetic waves do not require a material medium ; while mechanical waves require material medium for their transmission;
chrispohmomanyi answered the question on September 20, 2017 at 07:58
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State the first law of refraction
Date posted: September 20, 2017. Answers (1)
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Why is the metre bridge method a more accurate means of measuring resistance than Ammeter-voltmeter method.
Date posted: September 20, 2017. Answers (1)
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State one reason why mercury is preferred as a barometric liquid and not water.
Date posted: September 20, 2017. Answers (1)
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Date posted: September 20, 2017. Answers (1)
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Date posted: September 20, 2017. Answers (1)
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material is 4.9 x 10^-7 ohm m...(Solved)
Calculate the length of a wire required to make a resistor of 0.5 ohms, if the receptivity of the
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Date posted: September 19, 2017. Answers (1)
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second in 72 minutes. Determine the half – life...(Solved)
The activity of a radioactive substance, initially at 400 counts per second reduces to 50 counts per
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Date posted: September 19, 2017. Answers (1)
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is designed to carry a current of...(Solved)
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Date posted: September 19, 2017. Answers (1)
- A heating coil rated 1000 W takes 15 minutes to heat 20kg of a liquid from 26^o C of 42^o C.
Determine the specific heat capacity...(Solved)
A heating coil rated 1000 W takes 15 minutes to heat 20kg of a liquid from 26^o C of 42^o C.
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Date posted: September 19, 2017. Answers (1)
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(Solved)
Give one example of a semiconductor and one for a conductor
Date posted: September 19, 2017. Answers (1)
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Distinguish between semiconductor and conductors
Date posted: September 19, 2017. Answers (1)
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Which instrument which can be used to measure the thickness of the hair.
Date posted: September 19, 2017. Answers (1)
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State the accuracy of a vernier caliper.
Date posted: September 19, 2017. Answers (1)
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State the difference between conductors and insulators
Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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State any two reasons why water is not a suitable thermometric fluid.
Date posted: September 19, 2017. Answers (1)
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State why concrete is usually reinforced with steel in the construction of beams.
Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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Date posted: September 19, 2017. Answers (1)
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State any two special rays used in the construction of ray diagrams
Date posted: September 19, 2017. Answers (1)