Week 1-2 - Basic Capabilities

Which of the following are examples of systematic errors I. Weighing an object on an electronic balance. II. Consistently reading meter stick values from an angle. III. Using an incorrectly calibrated probe in an experiment.

Which statements about uncertainties are true? I. Every measurement has an uncertainty. II. Uncertainties are expressions of random error. III. Uncertainties are always expressed as positive values.

What is the uncertainty in a measurement taken on an electronic balance that reads mass (in grams) to two decimal places?

If a scale reading is quoted as 23.75 ± 0.05 g, which value could not be possible for this reading?

Find z if: x = (2.0 +/- 0.2) cm y = (3.0 +/- 0.6) cm z = x - 2y = [blank_start](-4.0 +/- 0.9)[blank_end] cm Hint: answer will resemble this format: (#.# +/- #.##) units

Which of the following units can be used to measure speed?

If w = (4.52 +/- 0.02) cm and x = (2.0 +/- 0.2) cm, find z if z = wx z = [blank_start](9.0 +/- 0.9)[blank_end] cm^2 Hint: Answer will be in this format: (#.# +/- #.#) units

If x = (2.0 +/- 0.2) cm and y = (3.0 +/- 0.6) s, find z if z = x/y. z = [blank_start](0.7 +/- 0.2)[blank_end] cm/s Hint: Answer will be in this format: (#.# +/- #.#) units

Which of the following are vectors?

Take the equation 2x = (g - y) / 2 and solve for g. Hint: For your answer, put a space between every character, so 7a+ 3b will look like 7 x + 3 b. g = [blank_start]4 x + y[blank_end]