What is the net force on a 4000 kg car that doubles its speed from 15 m/s to 30 m/s over 10 seconds

The net force  of the car is 6000 N.

Why?

To calculate the net force of the car during the given time, we first need to calculate its acceleration, and then, use Newton's Second Law equation to calculate the net force.

We can calculate the acceleration of the car during the given tieme using the following equation:

Substituting the given information, we have:

Now that we have calculated the acceleration, we can calculate the net force:

Hence, we have that the net force is equal to 6000N.

Have a nice day!

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.