![subject](/tpl/images/cats/fizika.png)
Physics, 10.11.2019 06:31 jodiisbored2621
In the benchmark model, at what scale factor a did [this represents the moment when expansion switched from slowing down to speeding up is this scale factor larger or smaller than the scale factor amλ at which the energy density of matter equaled the energy density of the cosmological constant?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:30
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 22:30
Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.
Answers: 1
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 06:00
Aforklift raises a box above the floor and does 2,000 j of work. if the forklift motor consumes 3,000 j of electrical energy from the battery to raise the box, what is the efficiency of the lift?
Answers: 2
You know the right answer?
In the benchmark model, at what scale factor a did [this represents the moment when expansion switch...
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.07.2019 23:20
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.07.2019 23:20
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.07.2019 23:20
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.07.2019 23:20
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.07.2019 23:20
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/ekonomika.png)
Business, 30.07.2019 23:20
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/himiya.png)