Randomization in an experiment means that the experimental units or subjects are selected as a simple random sample from the whole population under study.
a. true
b. false

Dalton’s model of an atom is the best described as a) a solar system b) a solid sphere c) a cloud d) a scoop of chocolate chip ice cream

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?