Find the magnitude of the sum
of these two vectors:
12.0 m
45.0° 9.66 m

me with this

8.57 m

Explanation:

To solve the problem, we have to decompose the two vectors along the two directions first:

Vector A:

- x component: Ax = +9.66 m

- y compoment: Ay = 0 (the vector lies along the x-axis)

Vector B:

- x component:

- y component:

So now we can find the sum of the two vectors by adding the components along each axis:

And the magnitude of the sum is given by Pythagorean theorem:

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

measuring things 1 litre of water