Physics, 08.10.2019 02:20 elizabethhubbe
equation 10.18. this equation cannot be applied to many-electron atoms. one way to modify it for the more complex atoms is to replace z with ^z 2 Οh, where z is the atomic number and Ο is a positive dimensionless quantity called the shielding constant. consider the helium atom as an example. the physical significance of Ο is that it represents the extent of shielding that the two 1s electrons exert on each other. thus, the quantity ^z 2 Οh is appropriately called the effective nuclear charge. calculate the value of Ο if the first ionization energy of helium is 3.94 Γ 10β18 j per atom. ^in your calculations, ignore the minus sign in the given equation. h
Answers: 2
Physics, 22.06.2019 00:30
Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?
Answers: 1
Physics, 22.06.2019 09:00
An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?
Answers: 3
Physics, 22.06.2019 16:30
When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)
Answers: 1
Physics, 22.06.2019 18:00
Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7
Answers: 1
equation 10.18. this equation cannot be applied to many-electron atoms. one way to modify it for the...
Arts, 17.11.2020 09:20
Social Studies, 17.11.2020 09:20
Business, 17.11.2020 09:20
Physics, 17.11.2020 09:20
Mathematics, 17.11.2020 09:20
History, 17.11.2020 09:20
Biology, 17.11.2020 09:20
Chemistry, 17.11.2020 09:20