How to analyse a company by this ratio? Or what can these ratios tell us?

Quick Ratio

If you are an investor in Apple, what impact to you think the Upgrade Program will have on your ability to assess Apple’s

financial performance as of 09/24/2016?

When light of wavelength 400 nm is incident on a metal surface, the stopping
potential of the photoelectrons is 0.600 V.
a. What is the work function of the metal?
b. What is the threshold frequency?
c. What is the maximum kinetic energy of the electron?

A proton (H⁺) is released at rest at a location where the electric potential is measured to be 3000 V.

The energy gained by the proton = _________ J BLANK-1 = __________ eV BLANK-2

The speed gained by the proton due to this potential is ______ m/s?

When 210 nm light falls on a metal, the current through a photoelectric circuit is brought to zero at a stopping voltage of 1.54 V . What is the work function of the metal? Express your answer using three significant figures.

Prove or disprove: two consecutive rotations about two different axis are commutative. That is, is RuRv = RvRu? (Hint: For simplicity, you can assume that the axis u is the x-axis and v is the y-axis without loss of gnerality).

Using identities for time derivatives and del operators, show that the solution of the inhomogeneous wave equation for the potential V given by the Lorentz gauge (the expression containing an integral over volume), does indeed satisfy the inhomogeneous wave equation.

A small generator produces 2.4 V of peak emf. If it contains a 0.050-T permanent magnet and 96 wire loops, each of which is roughly a 6.0-cm diameter circle, at what frequency does the generator rotate?

In a differential amplifier, the noninverting input is 3 cos (600t + 45◦) mV and the inverting input is 4cos (600t - 45◦) mV. The output is

vo = 3cos (600t + 45◦) + 4.004cos (600t - 45◦) V. The CMRR is_____ dB.