An α particle is a positively charge particle which is the nucleus of a helium atom 42he. An engineer who studied physics 158 e&m is designing a detector using a long metal wire and a uniform plastic plate. The details are as follows -- the long line carrying a uniform linear charge density +50. 0 μc/m runs parallel to and 10. 0cm from the surface of a large, flat plastic plate that has a uniform surface charge density of −100μc/m2 on one side

Alaser tag arena sells two types of memberships. one package costs $325 for one year of membership with an unlimited number of visits. the second package has $125 enrollment fee, includes five free visits, and costs and additional $8 per visit after the first five. how many visits would a person need to use for each type of membership to cost the same amount over a one-year period?

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

It takes longer to fly an airplane against a with it