How many neutrons does element X have if its atomic number is 40 and its mass number is 160?

A scientist's open - mindedness should always be balence do by bias true or false

A plane starts from rest and accelerates uniformly over a time of 20 seconds for a distance of 300 meters. Determine the plane's acceleration.

Look at the potential energy diagram for a chemical reaction. Which statement correctly describes the energy changes that occur in the forward reaction?

Which of the following is most likely to be attracted to a magnet? A. A school textbook B. A piece of glass C. An electromagnet D. A copper wire

What does the scientific method try to reduce?

Which of these is an example of a totalitarian regime A.) Canada under prime minister Trudeau's rule B.) the Soviet Union under Josef lo

Since 1 pound = 4.45 newton, what is your earth weight in newtons?

A girl moves at 2m/s delivering newspapers. she throws a newspaper directly behind her at 2m/s. in the frame of reference of someone standing nearby what is the motion of the newspaper.

What forces are acting on matter through contact or no contact

Consider the following when writing your report: a) Start by making a rough plan for how you will solve the problem. In particular, divide the big problem into two or more smaller problems that each involves one basic physics idea.