Answer:
The final speed of the two carts stuck together after the collision is 1 m/s
Explanation:
This is an example of an inelastic collision where two separate carts each with different momentum collide and become a single object.
The conservation of momentum (p) equation is: where is the initial momentum of cart 1:
Notice that cart 2 is at rest, therefore its velocity is zero, which makes its initial momentum zero:
The final momentum () for which we don't know the velocity () is the product of the final mass (addition of the two masses) times the final velocity of this new object (two carts stuck together):
Now we re-write the conservation of momentum equation to isolate and obtain the unknown final velocity:
Answer:
I think you would need too time your friend and know how too divide that time by other racers to see how much faster she needs to get. I THINK.
Answer:
The correct answer is ii) It must revolve around a star
Explanation:
For a celestial body to be called a planet, it must meet at least three characteristics
* rotate around a star
* its mass must be sufficient to maintain hydrostatic equilibrium
* have control over its orbital that is to say to prevent that other body is in its same orbital
if we check the different proportions
i) False. Most of the planets are spheres deformed by their rotation on themselves and around the star
ii) True. It is in accordance with the minimum characteristics of the plants
iii) False .. the orbit of the planet can be elliptical and the speed changes at each point for this at a different distance from the star that is in a focus of the ellipse.
The correct answer is ii) It must revolve around a star
Elemental and Molecular properties can vary depending on which molecule or element you are discussing.
Answer: Property
Answer: V = 4.35 × 10^12 m/s
Explanation: To calculate Rigel velocity relative to us, we should use doppler effect formula.
Fo = (c ) / ( c - Vs) × f
Fo/f = (c ) / ( c - Vs)
4.26 × 10^10 = (3×10^8) 6.17×10^14/(3×10^8 - V)
4.26×10^10/6.17×10^14 = (3×10^8)/(3×10^8 - V)
6.9×10^-5 = (3×10^8)/(3×10^8 - V)
Cross multiply
20713.13 - 6.9×10^-5V = 3×10^8
Collect the like terms
6.9×10^-5V = 3×10^8 - 20713.13
6.9×10^-5V = 299979286.9
V = 299979286.9/6.9×10^-5
V = 4.3475 × 10^12 m/s
Therefore, Rigel's velocity relative to us is 4.3475 × 10^12 m/s