Which of the following provided a hypothesis as to how the universe began?

A) the moon collision theoryB) the big bang theoryC) the antimatter theoryD) the molten theory

Considering the IMA of this frictionless inclined plane, how much force is required to drag a 90 lb. box up it? A. 109 lb B. 10 lb C. 81 lb D. 9 lb

2. What is the difference between a formula unit for an ionic compound and a molecular formula for a molecule?

Carla has 45$. Pineapples cost $5 each

A sample of calcium has a volume of 10.0 ml. the density of calcium is 1.55 g/ml. which is the correct expression to calculate the mass of the sample using dimensional analysis?

Compared to a phosphorus atom, a P3 - ion has (1) more electrons and a larger radius (2) more electrons and a smaller radius (3) fewer electrons and a larger radius (4) fewer electrons and a smaller radius

Definition of a delocalised electron

How are the components of the electromagnetic spectrum, from radio waves to gamma rays, grouped? Group of answer choices according to their wavelength according to their speed according to their visibility according to their velocity

Which two of the following elements would you expect to be most similar: nitrogen, chlorine, barium, fluorine, and sulfur?

Which statement best describes control rods? They are unmovable pieces. They are inert. They supply neutrons to start the nuclear chain reaction. They drive the generator

A large rift valley can be found along the east coast of Africa. It has been slowly widening over time, and it is now wide enough to contain many large lakes. Which of these best explains the slow widening of this rift valley over time? A.