Answer:
7. 8200 miles
8. $350
Step-by-step explanation:
7. The first trip nets 3400 miles; the next four trips (for a total of five) net 1200 miles each, so the total for 5 round trips is ...
... 3400 + 4×1200 = 8200 . . . miles
8. The first month costs $100; the next 5 months (for a total of 6) cost $50 each, so the total for 6 months is ...
... $100 + 5×$50 = $350
You have the formula
E i = 9 r
You can divide both sides by i and get
E = (9 r) / i
The formula is solved for e.
This exercise is incomplete. A slope of what?
Answer:
Step-by-step explanation:
<u>Electric Field</u>
The electric field produced by a point charge Q at a distance d is given by
Where
The net electric field is the vector addition of the individual electric fields produced by each charge. The direction is given by the rule: If the charge is positive, the electric field points outward, if negative, it points inward.
Let's calculate the electric fields of each charge at the given point. The first charge 
is at the origin. We'll calculate its electric field at the point x=-3.85 cm. The distance between the charge and the point is d=3.85 cm = 0.0385 m, and the electric field points to the left:
Similarly, for 
, the distance to the point is 12 cm + 3.85 cm = 15.85 cm = 0.1585 m. The electric field points to the right:
Since E1 and E2 are opposite, the net field is the subtraction of both
Answer:
BC= 9cm
Step-by-step explanation:
- You'll need to use the Pythagorean theorem:
a^2 + b^2 = c^2
The slanted side of the triangle is always going to be 'c' because it is the longest side of the triangle.
- Now simplify: 144 + b^2 = 225
I got these numbers because 12^2= 144 and 15^2= 225
- Now find the square root of 81. The answer is 9.
