1 Select the correct answer.
Meg goes swimming on a hot afternoon. When she comes out of the pool, her foot senses that the pavement is unbearably hot. Suppose Meg
wants to apply the scientific method to discover reasons for the hot pavement. What is the next step she should take?
O A. analyze the data
OB.
ask questions
Ос.
communicate the results
OD.
make observations
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The density of gold is 19.3g/cm3. what is the volume of a 13 g gold nugget? ( density: d= m/v)

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

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?