![subject](/tpl/images/cats/fizika.png)
Physics, 17.07.2020 22:01 christylam1606
Final naïve case: If the highest-pitch string on the piano is made of spring steel (density = 7800 kg/m3) with a diameter of 1/32" (= 0.794 mm), what will the linear density of such a string be (in kg/m)?
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 19:30
Asample of a gaseous substance changes into liquid. this process is called (blank) and it takes place when heat is (blank) a gaseous system
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 02:30
The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 04:30
Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 17:30
The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element
Answers: 1
You know the right answer?
Final naïve case: If the highest-pitch string on the piano is made of spring steel (density = 7800 k...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00
![question](/tpl/images/cats/istoriya.png)
History, 15.12.2020 22:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 15.12.2020 22:00
![question](/tpl/images/cats/biologiya.png)
Biology, 15.12.2020 22:00
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 15.12.2020 22:00
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00
![question](/tpl/images/cats/en.png)
English, 15.12.2020 22:00
![question](/tpl/images/cats/biologiya.png)
Biology, 15.12.2020 22:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 15.12.2020 22:00
![question](/tpl/images/cats/mat.png)
Mathematics, 15.12.2020 22:00