Ashining light casts a horizontal beam through a spacecraft.
which two observers would see this beam of light in the exact same way?
a. an observer inside the spacecraft while the spacecraft is at rest and an observer inside the spacecraft while the spacecraft is moving at a constant velocity
b. an observer inside the spacecraft while the spacecraft is accelerating and an observer inside the spacecraft while the spacecraft is at rest
c. an observer on earth while the spacecraft is at rest and an observer inside the spacecraft while the spacecraft is at rest
d. an observer on earth while the spacecraft is at rest and an observer inside the spacecraft while the spacecraft is moving at a constant velocity

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

the objects have the same charge is correct.

nathan lee

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.

answerambulatory;