Match the following word pairs concerning when you would use which balance and what technique (addition or difference) is required.Group of answer choicesWeighing 15.0 g accurately (but as quickly as possible)Weighing 0.01 g accuratelySmall losses in mass would have large effects on experimental resultsSmall losses in mass would not have large effects on experimental results (and speed is required)

A metre scale has a weight of 10 grams at a distance of 20 cm from the pivot. To balance this a student places another weight at a distance of 35 cm. Calculate the mass of this weight.

The two methods used for determining mass are:measuring directly on a balancemeasuring directly by displacement of watercalculated by measurements of w and gmeasuring directly on a scale

In an experiment, the mass of a sample is recorded as 20.5 g, 20.6 g, and 20.7 g. The balance used has an uncertainty of ±0.1 g. What is the best estimate of the mass of the sample?Select one:a.20.7 gb.20 gc.20.5 gd.20.6 g

In the context of the functional fitness assessment for adults over sixty years, 4-pound and 8-pound weights are used to measure _____.Multiple choice question.strength/enduranceaerobic fitnessagility/dynamic balancecoordination

An experimenter presents a subject with a standard weight of 100 grams followed by a comparison weight of 20 grams; the subject is asked if the two weights are the same or different. The standard is repeated followed by a comparison weight of 30 grams; the subject is again asked if the two are the same or different. This procedure continues with a comparison weight 10 grams heavier on each presentation until the subject says that both weights are the same. These steps are repeated starting with a comparison weight of 190 grams and decreasing it by 10 grams on each trial until the subject says the two weights are the same. What is the experimenter trying to measure?Question 10Answera.perceptual defenseb.difference thresholdc.method of limitsd.absolute threshold