![Physics](/tpl/images/cats/fizika.png)
Physics, 12.02.2020 03:29, joshbolaadebawore
An early model of the atom, proposed by Rutherford after his discovery of the atomic nucleus, had a positive point charge, +Ze (the nucleus) at the center of a sphere of radius R with uniformly distributed negative charge -Ze. Z is the atomic number, the number of protons in the nucleus and the number electrons in the negative sphere.
a) Estimate the charged enclosed within a sphere with the nucleus at its center, and the radius of r, smaller than R.
b) Use Gauss' law to obtain the electric field inside this atom.
c) A uranium atom has Z = 92 and R = 0.10 nm. Estimate the electrostatic force that an electron would experience at r = R/2?
![answer](/tpl/images/cats/otvet.png)
Answers: 3
Other questions on the subject: Physics
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 05:40, izzyisawesome5232
An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2
Answers: 1
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:00, janreyes39
Explain why you think this diagram shows what happened to the carbon in the biodome.
Answers: 2
![image](/tpl/images/cats/fizika.png)
![image](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 19:50, fili20
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
Answers: 3
Do you know the correct answer?
An early model of the atom, proposed by Rutherford after his discovery of the atomic nucleus, had a...
Questions in other subjects:
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/pravo.png)
Law, 29.08.2020 01:01
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/fizika.png)
Physics, 29.08.2020 01:01
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 29.08.2020 01:01
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/fizika.png)