A 40.0-cm SOLENOID IS SHOWN BELOW. IT HAS A 1.35 cm diameter and produces a magnetic field of magnitude B = 0.385 mT at its center. CONVERT TO meters m and tesla T, WHERE 1 mT= 0.001 T. (a) How much current I should the solenoid carry if it has 675 turns of wire? (b) In the picture below, which end is the north pole (N), the right end or left end? (c) In the picture below, which end is the south pole (S), the right end or left end?

A ray of light is passed through a ruby and it hits a surface in contact with air (n = 1.000) at an angle of 45° with respect to the normal.  Use the table below to determine happens when it hits           the surface? What is the critical angle?   The ray refracts into the air at an angle of 45° with respect to the normal. The ray reflects back into the ruby at an angle of 45° with respect to the normal. The ray refracts at an angle of 90° with respect to the normal, along the surface. The ray is absorbed in the air. None of the above.

Use the exact values you enter to make later calculations.A ray of light strikes a flat, 2.00-cm-thick block of glass (n = 1.96) at an angle of ? = 32.4° with respect to the normal (see figure below). A light ray incident on a glass block of thickness 2.00 cm is shown. The ray travels down and to the right and is incident to the top of the block at an angle ? to the normal of the surface. The ray inside the block moves down and to the right but at a steeper slope than the incident ray. It is incident on the bottom surface of the block and exits moving down and to the right, in the same direction as the incident ray. A dashed line extends from the original path of the ray down in the block and is shown to be a distance d from the ray that exits the glass block. (a) Find the angle of refraction at the top surface and the angle of incidence at the bottom surface. °(b) Find the refracted angle at the bottom surface. °(c) Find the lateral distance d by which the light beam is shifted. cm(d)…

i) Ray parallel to the optical axis; ii) Focal ray; iii) Central ray, iv) Draw the image of the arrow, v) Indicate in the same figure, from where to where di (image-lens distance) is. Use the figure, Do not substitute it with any other figure. Don't forget to put the direction on each ray, both the incident rays and the transmitted rays. Label each ray. Image characteristics for Case 3: Object distance d0=R. Choose the ones that apply: a) Virtual b) Real c) Inverted d) Increased e) No image is formed f) Equal size  g) Reduced h) Erect