Refer to the Altman Z score tab. The first column is the company identifier. Calculate the Altman Z score for company #122519. Round to two decimal places.

The null hypothesis predicts

The index of refraction of a certain liquid is 2.3. What is the critical angle for a light ray traveling in this liquid toward a flat layer of air above it?

In the figure, a real inverted image I of an object O is formed by a certain lens (not shown); the object-image separation is d = 30.8 cm, measured along the central axis of the lens. The image is just 1/5 the size of the object. What is the focal length (in cm) of the lens?

A conducting rod is sliding on metal rails with velocity v. A magnetic field B is into the paper, the separation of the rails is L, and the resistance of the circuit is R. In what direction in the diagram is the current flowing in the resistor?

In the figure, light is incident at angle θ1 = 39˚ on a boundary between two transparent materials. Some of the light travels down through the next three layers of transparent materials, while some of it reflects upward and then escapes into the air. If n1 = 1.26, n2 = 1.36, n3 = 1.34 and n4 = 1.43, what is the value of θ5

In a double-slit arrangement the slits are separated by a distance equal to 150 times the wavelength of the light passing through the slits. What is the distance (in cm) between these maxima on a screen 71.8 cm from the slits?

A transformer has 700 primary turns and 7.7 secondary turns. If Vp is 120 V (rms), what is Vs with an open circuit? 

Monochromatic light of wavelength 679 nm illuminates two parallel narrow slits 7.24 μm apart. Calculate the angular deviation of the third-order (for m = 3) bright fringe in radians.

Suppose the image of an object is upright and magnified 1.75 times when the object is placed 15.0 cm from a lens. Find  the focal length (in cm) of the lens.