Tag: PHY220

Problem 4 What is larger 4000 L or $latex 4\times 10^5\:cm^3&s=2&fg=000000$  (and you must show your reasoning.) Solution: There are $latex 1000\:or\:1\times 10^3\:cm^3&s=1&fg=000000$ in 1 L. So, in $latex 4\times…

Problem 3 What is the surface area of a sphere of diameter $latex 2.4\times 10^2&s=2&fg=000000$ cm? Solution: $latex SA=4\pi r^2=4\pi \left(\frac{2.4\times 10^2\:cm}{2}\right)^2=1.8\times 10^5\:cm^2&s=1&fg=000000$

Problem 2 Multiply $latex 1.783\times 10^{-2}\cdot 4.4\times 10^{-3}&s=1&fg=000000$, taking into account significant figures. Solution: $latex 1.783\times 10^2\cdot 4.4\times 10^{-3}=0.78\:or\:7.8\times 10^{-1}&s=1&fg=000000$

Problem 1 One lightyear is defined to be the distance light can travel in one year. What is this distance in meters? How long does it take for light to…