A student receives a model of an atom that contains seven protons, neutrons, and electrons, and has an atomic mass of approximately 14. What procedure can the student use to identify the atom?A student receives a model of an atom that contains seven protons, neutrons, and electrons, and has an atomic mass of approximately 14. What procedure can the student use to identify the atom?A student receives a model of an atom that contains seven protons, neutrons, and electrons, and has an atomic mass of approximately 14. What procedure can the student use to identify the atom?

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.