Answer: Vce= 4234.4km/hr or 1180m/s
Explanation:
Mass of rocket motor Mr= 4m
Mass of control module Mc= m
Initial velocity of spaceship relative to earth Vs= 4300km/hr
Final velocity of command module relative to the rocket motor Vrc = 82km/hr
Total mass of spaceship M= 4m+m= 5m
Using law of conservation of momentum;
MVs= MrVre + McVce eqn1
Vre = Vrc+Vce eqn2
Where Vce is velocity of control room relative to the earth and Vre is velocity of rocket motor relative to the earth
Substituting eqn2 to eqn1, we have.
MVs= Mr(Vrc+Vce) +McVce
MVs= MrVrc+MrVce+McVce
Making Vce the subject of formula.
Vce = (MVs-MrVrc)/(Mc+Mr)
Substituting the values we have,
Vce = (5m×4300km/hr - 4m×82km/hr)/ (m+4m)
Vce = 21172m/5m
Vce= 4234.4km/hr or 1180m/s
Answer: 1, 4, and 5 are true.
Explanation: Acid is bad for us and makes our soil bad for crops while Black Forests in Germany is concerned with this issue.
Respuesta
Amazonas
Rio Negro
Rio Orinoco
Rio Magdalena
Y Mucho Mas.
Explanation:
Ay Bien Artas Que son Importantes
Answer:
People choose to settle along the coast because the interior of these countries is not suitable for life.
Explanation:
The countries in Northern Africa like Libya, Morocco, Algeria, and Tunisia, have almost all of their populations settled along or very near the coastlines. There are slight variations among the population patterns in these countries, but the general rule, except in Morocco, is that the interiors have little to no population and settlements.
The reason for this is very simple, lack of living conditions in the interior. While the coastline has multiple benefits for the people, like Mediterranean climate, patches of good soil, access to sea, easy movement of goods and people, the interior is the total opposite. The inteior is a hot desert, part of the Sahara Desert. There is little to no water, no soil, no sources of food, little to no natural resources, no infrastructre, and very dangerous sandstorms.
Answer:
I think d. more developed
