Final answer:
The question does not provide enough information to determine the percent error in the measurement of a cat that weighs 10 pounds. The exact error in the measurement cannot be determined without knowing the absolute uncertainty of the measurement.
Step-by-step explanation:
To determine the error in the measurement of a cat that weighs 10 pounds, we need additional information specifying the uncertainty of the measurement. Without this information, we cannot accurately state the percent error. However, considering examples given, for instance, if we know the percent uncertainty of a 5 lb bag of apples is 8%, we could say that if the bag were half as heavy but the uncertainty remained the same, the percent uncertainty would double because percent uncertainty is inversely related to the mass when the absolute uncertainty remains constant.
Using a similar approach, we could calculate the percent uncertainty of the cat's weight if we knew the absolute uncertainty. For example, if the uncertainty were ±0.2 pounds, the percent uncertainty would be (0.2/10)*100%, resulting in a 2% percent uncertainty.
Unfortunately, since the uncertainty is not provided for the cat's weight, the exact error in the measurement cannot be determined from the question as it stands.