Please provide the explanation You design an experiment in which a light of freq

Question

Please provide the explanation

You design an experiment in which a light of frequency f is incident upon a metal with work function W0.   You can freely adjust the intensity and the frequency of the light, and you observe that when the light's frequency is above a "cutoff" value,  f0, electrons are emitted from the metal with a range of kinetic energies.  You measure that the maximum kinetic energy of these electrons is K.

Question 1: Which graph best shows K as a function of the frequency of incident light (at a fixed intensity)?

Question 2: Which graph best shows K as a function of the intensity of incident light (at a fixed frequency)?

Question 2

According to the Heisenberg uncertainty principle, if we know position of a particle along the x-axis, then we cannot simultaneously know:
(A) its y- or z-position
(B) the y- or z-component of its momentum
(C) the x-component of its momemtum
(D) its potential energy

A shaft of length L with cross section of constant radius c is built into two rigid walls (at A and B) and is subjected to a distributed torque t(x) (measured as torque/length) given by: t(x) = t0 [1 + (x/L)1] in which the ^-coordinate measures distance from the left wall as shown in Figure 3, and f0 is a prescribed constant. The shear modulus of the shaft is G. In what follows, express all quantitative results in terms of /o> c, and G. Draw a free body diagram of the entire shaft and based on equilibrium arguments alone find a relation between the torques TA and Tg exerted by walls A and B, respectively, on the shaft. Determine the torques TA and 7* exerted by walls A and B, respectively, on the shift Sketch how the torque 7;c) varies throughout the shaft. Determine the maximum magnitude of the shear stress x in the shaft and describe where it occurs

Explanation / Answer

question 1: A ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ question 1: E ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PART A: the x-component of its momentum

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