I would use grams because grams would give you more significant figures for the measurement than kilograms
Probably use kilograms, they're bigger than pounds. Most other countries use kilograms. Example: I weigh 120 pounds, which means I also weigh 54 kilograms.
I would use a postal scale to weigh the letter. Once I knew the weight, I could express it in any unit of force, but 'grams' would probably result in the most convenient number.
You can use either. If you use kilograms, you will probably get a decimal, less than 1, so grams would be commonly used. By the way, grams and kilograms are units of mass, not of weight.
paper clips do not weigh much, perhaps a gram each, so 10 weigh about 10 grams, so you would use grams, not kilograms, since 1 kg = 1000 grams
You could (theoretically) use either... However - Kilos is the preferred measurement.
grams
I would use grams because grams would give you more significant figures for the measurement than kilograms
Probably use kilograms, they're bigger than pounds. Most other countries use kilograms. Example: I weigh 120 pounds, which means I also weigh 54 kilograms.
I would use a postal scale to weigh the letter. Once I knew the weight, I could express it in any unit of force, but 'grams' would probably result in the most convenient number.
You can use either. If you use kilograms, you will probably get a decimal, less than 1, so grams would be commonly used. By the way, grams and kilograms are units of mass, not of weight.
For a weight of a letter, grams would be the best unit of measurement. As the letter typically is small and doesn't weigh that much. Example of using grams and kilograms would be. Getting slices of deli meat you would get grams, and for roast of meat you would use kilograms.
paper clips do not weigh much, perhaps a gram each, so 10 weigh about 10 grams, so you would use grams, not kilograms, since 1 kg = 1000 grams
You would weigh a butterfly in grams. Kilograms are typically used for measuring larger objects or quantities, while grams are used for smaller and lighter objects like insects. The weight of a butterfly is usually very light, so using grams would provide a more precise measurement.
As far as I can tell there is no such thing as a canalop! So it does not matter whether you use grams or kilograms - the measure will be zero in either case.
Kilograms are used to measure weight, while liters are used to measure volume. To weigh a squirrel accurately, you would use kilograms or grams.
You can just use a set of weigh scales.