Hi there, the correct answer is C. Reactivity. I know this is the correct answer because I took this quiz recently. Color, boiling point, and density are all examples of physical properties.
Answer:
f = 4000 / 30 sec = 133.3 vibrations/sec
P = 1 / f = .0075 sec period of 1 vibration
Answer:
stress = 16.9 MPa
Explanation:
The stress in the cable can be calculated as:

Where F is the force and A is the area. So, the area can be calculated as:

Where r is the radius. Since the radius is half the diameter, the radius is 4.0 mm and the area will be equal to:

Then, replacing the force F by 850 N, and A by 50.24 mm², we get that the stress is equal to:

Therefore, the answer is 16.9 MPa
Nothing, ATOMS lose or gain electrons to become IONS
<span>Two Na ATOMS lose 1 electron each and 1 S ATOM gains 2 electrons </span>