On a timer !

as a person pushes a box across a floor, the energy from the person’s moving arm is transferred to the box, and the box and floor become warm. during this process, energy is:
A. increased
B. conserved
C. destroyed
D. decreased
E. created

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

What is the equation for electrical work?

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.