Jenna took an open bowl of leftover mashed potatoes from the refrigerator. she determined that chemical changes occurred since the potatoes were first placed there. which observations most likely led to jenna’s conclusion? a production of odor a decrease in temperature a change in moisture content a decrease in mass

a production of odor

Explanation:

an odor is caused by one or more volatilized chemical compound that  humans and other animals can perceive by the sense of smell.

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A production of ordor. It suggests that a new substance formed that was not originally there. Which is a result of a chemical change.

x = 45 cm

Explanation:

Given that,

The length of a rod, L = 50 cm

Mass, m₁ = 0.2 kg

It is at 40cm from the left end of the rod.

We need to find the distance from the left end of the rod should a 0.6kg mass be hung to balance the rod.

The centre of mass of the rod is at 25 cm.

Taking moments of both masses such that,

The distance from the left end is 40+5 = 45 cm.

Hence, at a distance of 45 cm from the left end it will balance the rod.