For a bronze alloy, the stress at which plastic deformation begins is 267 mpa and the modulus of elasticity is 115 gpa.
(a) what is the maximum load (in n) that may be applied to a specimen having a cross-sectional area of 341 mm2 without plastic deformation? in (n)
(b) if the original specimen length is 169 mm, what is the maximum length (in mm) to which it may be stretched without causing plastic deformation? in mm

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories