1 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 up of almost entirely of atoms butt is denser than iron

suggest a reason for this

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Find the mass by adding the numbers from the three sliders

What structural formula represents 4 electrons shared between two atoms?