You are relaxing at home, working on your coin collection. you have learned that collectible coins are sometimes plated with gold to enhance their beauty and value. on an online site that sells collectible coins, you see a commemorative quarter-dollar advertised for sale at $4.98. the information on the site says that the coin has a diameter of 24.6 mm and a thickness of 2.10 mm, and it is completely covered with a layer of pure gold 0.175 μm thick. you know that gold scheme by which you would separate the gold from the base coin and sell the gold at the current market price. you begin your scheme by buying the advertsed coin at $4.98 (assume the density of gold is 19.3 g/cm3) is a valuable asset and you come up with a (a) what is the value of the gold for a single such coin (in cents)? assume that the price of gold is $38.00 per gram (b) what i1? what would be the cost (in dollars) of the gold to produce the coin if the coin were made entirely of gold?

The integral design hub incorporates thento the bearing unit. n a. cv joint n b. mounting carrier n c. brake rotor n d tie rod end

Consider two metallic rods mounted on insulated supports. one is neutral, the other positively charged. you bring the two rods close to each, but without contact, and briefly ground the the neutral rod by touching it with your hand. show answer correct answer what would be resulting charge (if any) on the initially neutral rod

Comedians like to joke that the reason we haven’t been visited by intelligent life from elsewhere in the universe is that aliens have been monitoring earth’s broadcasts of intellectually embarrassing tv programs, like gilligan’s island, fear factor, the jersey shore, and the jerry springer showand so consider us far too primitive to merit a visit. let’s check the assertion that aliens could have been receiving them. tv programs are broadcast at a frequency of about 100mhz with about 100kw of total power in 30frames per second, which emanatesroughly uniformly in all directions. assume that interstellar space transmits these broadcasts without attenuation. no matter how smart they are, aliens would require at least one photon per frame to interpret our signals. findthe number of photons per unit time per unit area reaching a receiver on a possible planet in the nearest star system, which is about 4 light-years away (a light-year is the distance light travels in a year). if aliens aimed a receiver or detector directly at earth, how big (in diameter) would it have to be to receive a photon per frame