Aphysics experiment is done in which three masses are used to balance a bar on a fulcrum. two masses (21 kg and 12 kg) are placed on one side of the fulcrum, 12 cm and 21 cm away, respectively. where must the third mass (18 kg) be placed in order to make the bar balance?

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

its a 5.5 n

glad that