An iron block of mass 45.87 kg is heated from 7 c to 218
c. if the specific heat of iron is 450 j-1 kg k-1 then how much energy is required

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?