In an experiment on the photoelectric effect, a beam of monochromatic light is aimed at a nickel-plated cathode. a scientist uses mathematical formulas to calculate the maximum speed of the electrons that the cathode releases which constant most limits the precision of the calculation? a planck's constant b the charge of one electron c the mass of an electron d the work function of nickel

An object has a weight of 500 on earth what is the mass of this object

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

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.