Awooden artifact is found in an ancient tomb. its 14c activity is measured to be 66.3% of that in a fresh sample of wood from the same region. assuming the same amount of 14c was initially presented in the wood from which the artifact was made, determine the age of the artifact. the half-life of 14c is 5730 y. answer in units of y.

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue