What subatomic particle is specifically responsible for combining the atoms together to form a new substance? Group of answer choices

proton

neutron

nucleus

valance electron

What is a frequency of a wavelength

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.