A demonstration of interference is done in class. A Slinky is stretched out from end to end. Three cups are placed on the ground, positioned just to the side of the Slinky™. Two pulses are introduced into each end at the same time. The pulses travel towards each other as shown in the overhead view diagram.

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Hen a gfci receptacle device is installed on a 20-ampere branch circuit (12 awg copper), what is the minimum volume allowance (in cubic inches) required for conductor fill for each conductor in the outlet box?