Two boxes, p and q, are at rest on a frictionless horizontal surface. a light, flexible cord connects them. the mass of p is greater than the mass of q. (as shown in the diagram,) a horizontal force of magnitude f is applied to box q, causing both boxes to accelerate to the right. what best describes the magnitude of the force exerted by the connecting cord on box p? *equal to f *greater than f *zero *less than f, but greater than zero

The boxes are tied together, so their motions are equal ... displacement, velocity, and acceleration ... the same for both boxes once they get going.

The force (F) exerted on Q has to be enough to accelerate the mass of both boxes.

But the force of the string pulling box-P is only enough to move the mass of box-P with the same acceleration.

So the magnitude of the force exerted on box-P by the string (the tension in the string) is less than F , (but greater than zero, because it accelerates box-P).

It doesn't matter which box is heavier, lighter, more mass, or less mass.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.