An electron has a negative charge. Hope this helps.
Answer:
t = 2.2 s
Explanation:
Given that,
A person observes a firework display for A safe distance of 0.750 km.
d = 750 m
The speed of sound in air, v = 340 m/s
We need to find the between the person see and hear a firework explosion. let it is t. So, using the formula of speed.

So, the required time is 2.2 seconds.
I see a pillow
But you see...this bobcat
Cute ain’t it?
Graph A so answer B also why isn’t answer a with graph A and B with graph B etc like that’s just confusing lol
C is the right image for that biological process.