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Questions in physics

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

[Answered] The loudness, [tex]$L$[/tex], measured in decibels (Db), of a sound intensity, [tex]$I$[/tex], measured in watts per square meter, is defined as [tex]$L=10 \log \frac{1}{f_0}$[/tex], where [tex]$f_0=10^{-12}$[/tex] and is the least intense sound a human ear can hear. What is the approximate loudness of a dinner conversation with a sound intensity of [tex]$10^{-7}$[/tex]?

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

[Answered] What is the value of the charge that experiences a force of [tex]$2.4 \times 10^{-3} N$[/tex] in an electric field of [tex]$6.8 \times 10^{-6} N / C$[/tex]?

[Answered] Consider a balloon that has a volume V. It contains n moles of gas, it has an internal pressure of P, and its temperature is T. If the balloon is heated to a temperature of 15.5T while it is placed under a high pressure of 15.5P, how does the volume of the balloon change? A. It doubles. B. It stays the same. C. It increases greatly. D. It decreases slightly.

[Answered] The force of gravity on an object varies directly with its mass. The constant of variation due to gravity is 32.2 feet per second squared. Which equation represents [tex]$F$[/tex], the force on an object due to gravity according to [tex]$m$[/tex], the object's mass? A. [tex]$F=16.1 m$[/tex] B. [tex]$F=\frac{16.1}{m^2}$[/tex] C. [tex]$F=32.2 m$[/tex] D. [tex]$F=\frac{32.2}{m^2}$[/tex]

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

[Answered] What is released through nuclear fusion in stars? A. energy B. gas C. mass D. pressure

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

[Answered] A drop of ink is placed in water and left undisturbed. After some time, the whole water turns blue. Explain the process involved and why it happens even without stirring.