Acar is slowed because the air it is moving through pushes against it. this contact force is known as air

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Why don't you see your reflection in water with waves or repples