Prepare your testimony as an expert witness on tool marks.

Instead of working with photographs, use four different screwdrivers to prepare tool impressions. Select one screwdriver to be the crime-scene tool and prepare an impression on a piece of soft wood (like pine) to serve as crime-scene evidence. Take photographs and measurements, and prepare a cast of the tool impressions. Prepare your testimony as an expert witness on tool marks. Include measurement charts of four screwdrivers and the crime scene photographs along with casts to support your testimony. Be prepared to present evidence to the class and defend your findings.

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determine values for K7 and K8.

Polyolefins such as polyethylene undergo slow degradation when placed in air. Degradation occurs by reactions with atmospheric oxygen that lead to the formation of carbonyl groups (groups containing oxygen), gradual….

State the differences in operation and application for junction transistors and MOSFETs.

1. State the differences in operation and application for junction transistors and MOSFETs. 2. We note in Section 12.5 (Figure 12.20) that in FeO (wüstite), the iron ions can exist in both….

Determine values of DT for aluminum, steel, aluminum oxide, soda–lime glass, polystyrene, and nylon 6,6 using the data in Table 19.1.

Nonsteady-state heat flow may be described by the following partial differential equation:     where DT is the thermal diffusivity; this expression is the thermal equivalent of Fick’s second law of diffusion….