Which of the following actions may help to prevent a rear-end collision? rolling forward if there is room
pumping the brake to make the brake lights flash
rolling forward if the front zone is clear
all of the above

Can anybody me with this? ? (picture included.)

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.