![subject](/tpl/images/cats/fizika.png)
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:00
The frequency of vibrations of a vibrating violin string is given by f = 1 2l t ρ where l is the length of the string, t is its tension, and ρ is its linear density.† (a) find the rate of change of the frequency with respect to the following. (i) the length (when t and ρ are constant) (ii) the tension (when l and ρ are constant) (iii) the linear density (when l and t are constant) (b) the pitch of a note (how high or low the note sounds) is determined by the frequency f. (the higher the frequency, the higher the pitch.) use the signs of the derivatives in part (a) to determine what happens to the pitch of a note for the following. (i) when the effective length of a string is decreased by placing a finger on the string so a shorter portion of the string vibrates df dl 0 and l is ⇒ f is ⇒ (ii) when the tension is increased by turning a tuning peg df dt 0 and t is ⇒ f is ⇒ (iii) when the linear density is increased by switching to another string df dρ 0 and ρ is ⇒ f is ⇒
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 11:00
Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide? kg • what must the total momentum of the system be after the train cars collide? kg •
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 23:50
What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 02:50
You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?
Answers: 1
You know the right answer?
The earth has radius r. a satellite of mass 100 kg is in orbit at an altitude of 3r above the earth'...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 01.12.2020 21:50
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/fizika.png)
Physics, 01.12.2020 21:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50
![question](/tpl/images/cats/biologiya.png)
Biology, 01.12.2020 21:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 01.12.2020 21:50
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50
![question](/tpl/images/cats/es.png)
Spanish, 01.12.2020 21:50
![question](/tpl/images/cats/mat.png)
Mathematics, 01.12.2020 21:50