Determine the potential energy and kinetic energy of a ball that has a potential energy of 10 Joules before it is dropped. The ball isn’t moving at the top position, is halfway down at the middle position, and is almost hitting the ground at the bottom position

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.