Akio draws the ray diagram shown.
focal point
focal point
which best explains how to correct akio's mistake?
change the lens so it appears convex instead of concave.
move the small car so it appears on the left side of the lens.
make the small car much larger than the other car.
draw the top ray so that it passes through the focal point on the right .

Move the small car so it appears on the left side of the lens.

Explanation:

The small car should be moved to the left side of the lens. This is because any image formed by a lens either concave or convex is to placed below the point of intersection of two rays, one of which is the divergence ray that reflect back passing through the focus (2) and the second ray passing through the optical center (1)

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

it would be kevlar ^^