A woman weighing 450 Newtons sits on the floor. She exerts a force on the floor of

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

What state of matter is ice a. liquid b. element c. solid d. gas