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Questions in physics

📝 Answered - The transmission of heat requiring the movement of a liquid or a gas is A) conduction. B) convection. C) radiation. D) transduction.

📝 Answered - What temperature is $-10 .{ }^{\circ} C$ on the Fahrenheit scale? $263^{\circ} F$ $14^{\circ} F$ $-18^{\circ} F$ $26^{\circ} F$ $-6.0^{\circ} F$

📝 Answered - Solar flares are nothing to be concerned about as the Sun is too far away for us to be affected. True False

📝 Answered - An electromagnetic wave has a frequency of $6.0 \times 10^{18} Hz$. What is the wavelength of the wave? Use the equation $\lambda=\frac{v}{f}$ and the speed of light as 3.0 $\times 10^8 m / s$. A. $5.0 \times 10^{-11} m$ B. $2.0 \times 10^{-26} m$ C. $5.0 \times 10^{26} m$ D. $2.0 \times 10^{10} m

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

📝 Answered - Particle A has very little mass in comparison to Particle B. Both particles are in the same atom. Which is the best conclusion about Particles A and B? A. They have the same charge. B. They are located in the nucleus together. C. Particle A has a positive charge, and Particle B is neutral. D. Particle A orbits the nucleus, and Particle B is located in the nucleus.

📝 Answered - Which equations represent the relationship between wavelength and frequency for a sound wave? Check all that apply. $v=\lambda f$ $\lambda=v f$ $f=\lambda v$ $\lambda=\frac{v}{f}$ $\lambda=\frac{f}{v}$ $f=\frac{v}{\lambda}$ $f=\frac{\lambda}{v}$

📝 Answered - Light having a wavelength of [tex]450 nm(4.50 \times 10^{-7} m)[/tex] moves through space at [tex]3.0 \times 10^8 m / s[/tex]. What is the frequency of the light? A. [tex]6.67 \times 10^{14} Hz[/tex] B. [tex]1.50 \times 10^{-15} Hz[/tex] C. [tex]7.41 \times 10^{-3} Hz[/tex]

📝 Answered - A construction worker dropped a hammer while working on a skyscraper, 1752 feet above the ground. Use the formula [tex]t=\frac{\sqrt{h}}{4}[/tex] to find how many seconds it took for the hammer to reach the ground. Round to the nearest tenth of a second.

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