A crate of bananas weighing 3000 N is shipped from South America to New York, where it is unloaded onto a
lever. The dock worker applies a force of 200 N on the
other side of the lever to lift the crate. What is the
mechanical advantage of the system?

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.

Orange juice has a lower or higher viscosity than chocolate syrup

How are positive ions different from neutral atoms