Right answer gets brainliest+5 stars. jenny finds a sample of a mineral known as zircon in a sample of rock material. she takes it back to her laboratory and measures the amount of radioactive uranium in it compared to the amount of radioactive lead. what additional piece of information must jenny have in order to determine the age of the zircon? a) the ages of any fossils found near her sample of zircon b) the decay rates of radioactive uranium and lead c) the thickness of sedimentary rock layers found near the zircon d) the density of the rock in which the zircon was found

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?