Question

four students made statements about a tennis ball they were using in a lab. statements made by students student statement irma i used a ruler to measure the radius and then an equation to calculate the volume as 104 cm³. julia i used a scale to measure the mass as 0.6 lb. grace i used a scale to measure the weight to be 0.28 lb. masha i used a bucket of water and a ruler to measure the volume as 98 cm³. which student made a mistake in her statement? irma julia grace masha

Explanation:

Step1: Recall weight - mass concept

Weight is a force and mass is the amount of matter. A scale measures mass, not weight in the proper scientific sense. The unit of weight in SI is Newton, while pound - mass (lb) is a unit of mass. Grace used a scale to measure "weight" in lb which is incorrect as scale measures mass.

Answer:

Grace