Physics, 25.06.2019 06:00 Schoolworkspace453
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
Answers: 1
Physics, 21.06.2019 20:00, johnLavender8262
The chemical effect of the endocrine system is longer lasting than the chemical effect of the nervous system. select the best answer from the choices provided t f
Answers: 3
Physics, 22.06.2019 12:30, mommer2019
Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?
Answers: 1
Physics, 22.06.2019 13:00, caleb1009
At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.
Answers: 3
Right answer gets brainliest+5 stars. jenny finds a sample of a mineral known as zircon in a sample...
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