![subject](/tpl/images/cats/fizika.png)
Physics, 28.02.2020 00:25 xandraeden32
A rocket moves with initial velocity v0 towards the Moon of mass M, radius r0. Find the cross section σ for striking the Moon, taking the Moon to be at rest and neglecting all other bodies. Hint: σ is the area of the cross section of the cylinder of initially parallel orbits far from the Moon that eventually strike it. The enhancement of this cross section over the pure geometrical cross section πr02 is known as gravitational focusing.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/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 17:30
Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 02:00
The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e
Answers: 3
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:30
Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:00
Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas
Answers: 2
You know the right answer?
A rocket moves with initial velocity v0 towards the Moon of mass M, radius r0. Find the cross sectio...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 29.08.2019 18:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 29.08.2019 18:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 29.08.2019 18:30
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 29.08.2019 18:30
![question](/tpl/images/cats/fizika.png)
Physics, 29.08.2019 18:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)