Which vector has a y-component with a length of 4? a. cb. dc. bd. a

ANSWER

The correct answer is D.

EXPLANATION

The y-component of the vector, is the same as the vertical component of the vector.

We can see from the graph that each box in the grid is one unit.

The component of vector a is

We count 4 boxes along the positive y- axis to get the y-component of vector a.

See graph in attachment.

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:

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle