An electric car is capable of going 225 km on a single charge. with a full charge to start, how many additional charges will it need to travel from seattle, washington, to san diego, california, a distance of 1257 mi?

We are given that the capacity of 1 charge is 225 km, so the rate of consumption is:

rate = 1 charge / 225 km

The total distance that must be travelled is:

distance = 1257 mi = 2022.945 km

So the total charges needed is:

total charges  = 1 charge / 225 km * 2022.945 km

total charges = 9 charges

Since we started with 1 full charge, so additional charges needed is only 8.

8

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.