![subject](/tpl/images/cats/fizika.png)
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 17:10
Space-time metric ds2= -dt2+at2dx2+bt2dy2+ct2dz2 (a)how does the area of a rectangle with vertices at ( x=0, y=0, z=0 ), (1,0,0 ), ( 0,1,0 ) and (1,1,0 ) changes with time? (b) if a photon moving in the x direction starts from the origin at t=1, when does it reach x=l? (ds=0 for the trajectory of a photon.) (c) the proper time for a particle is defined by cd=ds. what is the proper time for a particle to move along the trajectory ( x(t)=t, y(t)=0, z(t)=0 ) from t=0 to 1 ? what is the condition on the parameter a so that the velocity of the particle never exceeds the speed of light ?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 17:20
Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 22:50
If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 03:00
1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
Answers: 1
You know the right answer?
Amailman performed 296 j of work lifting a box of 1.6 m. how much force did the mailman use?...
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 19:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 19:30
![question](/tpl/images/cats/biologiya.png)
Biology, 05.05.2021 19:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 19:30
![question](/tpl/images/cats/en.png)
English, 05.05.2021 19:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 05.05.2021 19:30
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 05.05.2021 19:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 05.05.2021 19:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 19:30
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 19:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 19:30
![question](/tpl/images/cats/health.png)
Health, 05.05.2021 19:30