In the figure, the magnitude of vector a⃗ is 18.0 units, and the magnitude of vector b⃗ is 12.0 units. what vector c⃗ must be added to the vectors a⃗ and b⃗ so that the resultant of these three vectors points in the − x direction and has a magnitude of 7.50 units?

When a resistor with resistance r is connected to a 1.50-v flashlight battery, the resistor consumes 0.0625 w of electrical power. (throughout, assume that each battery has negligible internal resistance.) what power does the resistor consume if it is connected to a 12.6-v car battery? assume that r remains constant when the power consumption changes.

What is a good example of instantaneous speed

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?