What is the main force driving the creation of a star? A. electromagnetic

B. the Big Bang

C. friction

D. gravity

Which of the following is not am example of a polymer? protein nylon kevlar concreta

What are two different ways you could find the value of a? explain these methods.

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.