Measurement questions | form five Physics

Measurement of mass by using equal-arm beam balance uses the principle of

1. Conservation of momentum
2. Conservation of energy
3. Moments
4. Gravitational pull of the earth
5. Conservation of matter

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UNSOLVED

1. identify two basic rules of dimensional analysis
2. the frequency n of vibration of a streched string is a function of its tension  F , the length l and mass per unit length m. use the method of dimensions to derive the formula relating the stated physical quantities.

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UNSOLVED

Give the meaning of the following terms as used in error analysis :

1. absolute error
2. relative error

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UNSOLVED

i)What is an error? Mention two causes of systematic and two causes of random errors.

ii)The pressure P is calculated from the relation  where F is the force and R the radius. If the percentage possible errors are 2% for F and 1% for R. Calculate the possible percentage error for P.

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UNSOLVED

The speed v of a wave is found to depend on the tension T in the string and the mass per unit length (linear mass density). Using dimensional analysis derive the relationship between v, T and .

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UNSOLVED