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Questions in physics

📝 Answered - Two identical capacitors are arranged in a circuit. What is the ratio of the equivalent capacitance of the circuit when the capacitors are in series to when they are in parallel?

📝 Answered - What causes the Earth's crust to move?

📝 Answered - The frequency of violet light is [tex]7.5 \times 10^{14}[/tex] hertz. What is the wavelength?

📝 Answered - Which is an example of a physical change? A. Metal rusting B. Silver tarnishing C. Water boiling D. Paper burning

📝 Answered - You hear thunder 3 seconds after you see lightning. How far away is the storm?

📝 Answered - How much work does a person do in pushing a box with a force of 10 N over a distance of 4.0 m in the direction of the force?

📝 Answered - The density of ice is 0.92 g/cm\(^3\). An ice sculptor orders a one cubic meter block of ice. What is the mass of the block? Hint: 1 m\(^3\) = 1,000,000 cm\(^3\) Give your answer in grams and kilograms.

📝 Answered - A particle is moving along the x-axis so that its position at any time [tex]t \geq 0[/tex] is given by [tex]x(t) = 2te^{-t}[/tex]. A) Find [tex]v(t)[/tex]. B) Find [tex]a(t)[/tex]. C) At [tex]t = 0[/tex], is the particle slowing down or speeding up? Explain. D) At what time(s), if any, does the particle change directions? Justify your answer.

📝 Answered - A merry-go-round makes 18 rotations in 3 minutes. What is its angular speed in rotations per minute (rpm)?

📝 Answered - You are given two solid materials, one that is organic and one that is not organic. Describe three tests you could perform to help you decide which is which.