Problem: Consider the jar of jelly beans in the photo. To get an estimate of the number of beans in the jar you weigh six beans and obtain masses of 3.15, 3.12, 2.98, 3.14, 3.02, and 3.09 g . Then you weigh the jar with all the beans in it, and obtain a mass of 2086 g . The empty jar has a mass of 655 g . Based on these data estimate the number of beans in the jar.

🤓 Based on our data, we think this question is relevant for Professor Hopkins' class at LSU.

FREE Expert Solution

We are asked to estimate the number of beans in the jar.


Step 1. Calculate the average mass of beans.

 3.15  + 3.12 + 2.98 + 3.14 + 3.02 + 3.096

= 3.08 g


Step 2. Calculate the mass of beans

mass beans = mass jar w/ beans - mass jarmass beans = 2086 g - 655 g

mass beans = 1431 g


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Problem Details

Consider the jar of jelly beans in the photo. To get an estimate of the number of beans in the jar you weigh six beans and obtain masses of 3.15, 3.12, 2.98, 3.14, 3.02, and 3.09 g . Then you weigh the jar with all the beans in it, and obtain a mass of 2086 g . The empty jar has a mass of 655 g . Based on these data estimate the number of beans in the jar.

A photograph of a jar of jelly beans.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Dimensional Analysis concept. You can view video lessons to learn Dimensional Analysis. Or if you need more Dimensional Analysis practice, you can also practice Dimensional Analysis practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Hopkins' class at LSU.