Object A and object B are both in motion when they collide with each other

hypothesising or postulating

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.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

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

isoceles right angled triangle