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Questions in physics

📝 Answered - Complete the sentence to describe what a wave is and what it does. A wave is a disturbance that carries _____ from _____.

📝 Answered - Select the correct answer. A particle has two down quarks and one up quark. What is the charge of that particle? A. +e B. 2 -- e / 3 C. 0 D. 2 +- / 3

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - A blue object will appear black when illuminated with A. blue light. B. none of the above C. light. D. yellow light. E. cyan light.

📝 Answered - What approximate factor is the intensity of an earthquake with magnitude 5.4 greater than an earthquake with magnitude 5.3? [tex]M=\log \left(\frac{1}{l_0}\right)[/tex] [tex]M=[/tex] the magnitude of an earthquake [tex]I=[/tex] the intensity of an earthquake [tex]I_0=[/tex] the smallest seismic activity that can be measured, which is 1

📝 Answered - Estimate the quantity of heat needed to melt 150 g of ice at [tex]$-10^{\circ} C$[/tex] to water at [tex]$15^{\circ} C$[/tex]. [SHC of water [tex]$=4200 Jkg ^{-1} K^{-1}$[/tex] ] [SHC of ice [tex]$=21001 kg^{-1} k ^{-1}$[/tex] ] [SHC of ice [tex]$=3.36 \times 10^5 Jkg ^{-}$[/tex]]

📝 Answered - Which elements can be made in the core of a star after the hydrogen is used as fuel? Select four answers. iron gold silicon carbon oxygen hydrogen

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?