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3 years ago

Mitchell records the amount of time a toy car takes to travel down a ramp one time for each of four slope angles. His lab

Physics

1 answer:

Alexandra [31]3 years ago

4 0

He should run the same set of trials more times in order to improve the precision of the result

Explanation:

When doing a scientific experiment, the results of the measurement are subjected to errors. There are various types of errors:

- Statistical errors: these are due to the limited precision of the instruments used for the measurement. For example, when measuring a lenght with a ruler, the ruler cannot measure with a precision of less than 1 mm, so we always have at least an uncertainty of 1 mm on the measurement done

- Systematic errors: these are errors due to faulty equipment of flaws in the design of the experiment.

In order to reduce the statistical error, it is important to repeat the same measurement more than once: in this way, we can calculate an average for the quantity we are measuring, and the uncertainty on the measure will be reduced.

In this problem, therefore, the amount of time taken by the toy car to travel down the ramp must be measured more times, and then Mitchell should calculate an average for each set of trials, in order to improve the precision of the results.

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So here number of conduction electrons are very less in insulators

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Resistance inversely depends on the area so if a wire has more crossectional area then its resistance must be small

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Read 2 more answers

A grandfather clock has a pendulum that consists of a thin brass disk of radius r = 13.62 cm and mass 1.199 kg that is attached

Feliz [49]

Answer:

Explanation:

Expression for time period of a pendulum is as follows

T = $2\pi\sqrt{\frac{l}{g} }$

l is length of pendulum from centre of bob and g is acceleration due to gravity

Given

Time period T = 1.583

g = 9.846

Substituting the values

1.583 = $2\pi\sqrt{\frac{l}{9.846} }$

l = $\frac{(1.583)^2\times9.846}{4\times(\frac{22}{7})^2 }$

l = .6244 m

= 62.44 cm

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= 62.44 - 13.62

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