A rectangular block of steel measures 4cm*2cm*1.5cm*. its mass is 93.6g a) calculate the density of steel.
b) Steel is made entirely of iron atoms but is denser than iron.
suggest a reason for this

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

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.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional