A 0.03-in-diameter glass tube is inserted into kerosene at $68^{\circ} \mathrm{F}.$ The contact angle of kerosene with a glass surface is $26^{\circ}.$ Determine the capillary rise of kerosene in the tube.

What is sound? How is it generated? How does it travel? Can sound waves travel in a vacuum?

An airplane flies at constant velocity $ec V_{ ext { airplane }}$. Discuss the velocity boundary conditions on the air adjacent to the surface of the airplane from two frames of reference: (a) standing on the ground, and (b) moving with the airplane. Likewise, what are the far-field velocity boundary conditions of the air (far away from the airplane) in both frames of reference?

The principal virtue of Pyrex glass is that its coefficient of linear expansion is much smaller than that for ordinary glass Explain why this gives rise to the increased heat resistance of Pyrex.

Glass, such as the natural volcanic glass obsidian, is a. crystalline $\\$ b. ionically bonded$

$$c. covalently bonded$$

$$d. atoms randomly arranged$$

$ e. malleable due to perfect metallic bonding

A glass of water with a mass of 0.32 kg at 20$^\circ{}$C is to be cooled to 0$^\circ{}$C by dropping ice cubes at 0$^\circ{}$C into it. The latent heat of fusion of ice is 334 kJ/kg, and the specific heat of water is 4.18 kJ/kgK. The amount of ice that needs to be added is (a) 32 g (b) 40 g (c) 80 g (d) 93 g (e) 110 g

What is the general term for a rock fragment present in a sedimentary rock? A. clast B. glass C. mineral D. pore

Add commas where they are needed in the following sentences. If a sentence is already correct, write C before the item number.

Example 1. Lisamay I offer you some juice or a glass of spring water?

Gosh you’ve really grown since I saw you last.

When a ray of light enters a piece of glass that is surrounded by air, it slows down. When it leaves the glass, does its speed increase, decrease, or stay the same? Explain.

Add commas where they are needed in the following sentences. If a sentence is already correct, write C before the item number.

Example 1. Lisamay I offer you some juice or a glass of spring water?

Clarence by practicing all weekend was able to play the song on the guitar on Monday.

Add commas where they are needed in the following sentences. If a sentence is already correct, write C before the item number.

Example 1. Lisamay I offer you some juice or a glass of spring water?

The bright red car nosed carefully through the narrow crowded street.

Using the discussed equation, determine several points on the velocity profile for the flow of $400\ \mathrm{gal} / \mathrm{min}$ of water at $50^{\circ} \mathrm{F}$ in a new, clean, $4$ -in Schedule $40$ steel pipe. Make a plot similar to the figure with a fairly large scale.

Attic windows, roof-lights on caravans and the covers over fluorescent lights are sometimes made of ribbed plastic or glass: a) Where is the light totally internally reflected and where is it refracted? b) Copy and complete the diagram carefully. c) Why is the glass made like this? d) What would happen if the glass was reversed?

A 0.018-in-diameter glass tube is inserted into mercury, which makes a contact angle of $140^{\circ}$ with glass. Find the capillary drop of mercury in the tube at $68^{\circ} \mathrm{F}$.