Awindow washer stands on a scaffolding 30m above the ground. if he did 23,520j of work to reach the scaffolding, what is his mass?

Would corn syrup, molasses, or pancake syrup make a good lubricant in a car engine? explain your answer.

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.

What happens in a global convection cell