Technician A says that used brake fluid can be poured down the sewage drain. Technician B says that brake fluid can be mixed with used engine oil for recycling. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
D
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To reduce heat transfer losses through a glass window, you consider replacing the window with one of three alternatives: a sheet of tin 0.50-cm thick, a layer of brick 8.0- cm thick, and a combination of wood and insulation 4.0-cm thick. The original thickness of the glass is 1.0-cm. Consider the thermal conductivities of each to be the following: glass – 1.40 W/m-K; tin – 66.6 W/m-K; brick – 1.20 W/m-K; wood/insulation combination – 0.09 W/m-K. Considering the inside temperature of the surface to be 20.0°C, and the outside temperature to be -5.0°C, determine the heat conduction rate per unit area for the glass and the three alternatives, and discuss the relative merits of the three alternatives (ignoring material and installation costs).
Given: Ti = 20.0°C; To = -5.0°C What will be an ideal response?
An ectothermic organism is one that:
A) Is a cold-blooded organism B) Regulates its own temperature C) Is heated from external sources D) Requires heat during hours of no sunlight
The ____________________of air is the measure of heat content in Btu per pound of air.
Fill in the blank(s) with the appropriate word(s).
A circuit is shown in Figure 1. In this figure,
(a) Label all the nodes (1, 2, 3, ...) in the circuit excluding the ground node which is already
labeled as 0.
(b) How many nodes are there?
(c) How many simple nodes are there?
(d) How many essential nodes are there?
(e) How many branches are there?
(f) How many meshes are there? List all meshes.
(g) How many loops (including meshes) are there?
(h) List all loops that are not meshes.
