Question 5 20 pts
A student is classifying everyday substances
as conductors or insulators using a simple
circuit. The tested substances are
connected to the circuit in the dotted box.
Investigation Data
Sample Substance
Qualitative Observation
Distilled water
No light
Dim light
Graphite
Pickle Juice
Bright light
Dim light
Silicon
3 V
Based on the observations, which substance
has the lowest resistance?
Graphite
Distilled Water
Silicon
O Pickle Juice

Alarge truck is moving 22.0 m/s. if it’s momentum is 125,000 kg • m/s, what is the trucks mass

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished