![subject](/tpl/images/cats/fizika.png)
Physics, 13.07.2021 20:30 sierravick123owr441
A young girl gives her toboggan a push of 4.0 m/s up a hill. It slides up the hill slowing down at an acceleration of 8.0 m/s2 [down]. It comes to a stop and then slides back towards her speeding up at the same rate as it slowed down on the way up. If the girl has to run 48 m down the hill from where it first was pushed to get to where her sled stopped, find the elapsed time for the total journey.
![ansver](/tpl/images/cats/User.png)
Answers: 1
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 18:10
The difference between two numbers is 15. when twice the smaller number is subtracted from three times the larger number, the difference is 58.what is the larger number?
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:30
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 07:30
Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life
Answers: 3
You know the right answer?
A young girl gives her toboggan a push of 4.0 m/s up a hill. It slides up the hill slowing down at a...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 22.08.2020 09:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.08.2020 09:01
![question](/tpl/images/cats/en.png)
English, 22.08.2020 09:01
![question](/tpl/images/cats/fizika.png)
Physics, 22.08.2020 09:01
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 22.08.2020 09:01
![question](/tpl/images/cats/mat.png)
Mathematics, 22.08.2020 09:01
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.08.2020 09:01
![question](/tpl/images/cats/en.png)
English, 22.08.2020 09:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 22.08.2020 09:01
![question](/tpl/images/cats/fizika.png)
Physics, 22.08.2020 09:01
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.08.2020 09:01