It’s red shift and blue shift because This only occurs when the frequency of the wave is made longer or shorter due to the movement of the source relative to the observer
Answer:
10.13
Explanation:
take note that velocity is distance over time (
) so you do 456(distance)÷45(time)= 10.13
Answer:
In a collision, the velocity change is always computed by subtracting the initial velocity value from the final velocity value. If an object is moving in one direction before a collision and rebounds or somehow changes direction, then its velocity after the collision has the opposite direction as before.
Explanation:
Answer:
The speed at the aphelion is 10.75 km/s.
Explanation:
The angular momentum is defined as:
(1)
Since there is no torque acting on the system, it can be expressed in the following way:




(2)
Replacing equation 1 in equation 2 it is gotten:
(3)
Where m is the mass of the comet,
is the orbital radius at the aphelion,
is the speed at the aphelion,
is the orbital radius at the perihelion and
is the speed at the perihelion.
From equation 3 v_{a} will be isolated:
(4)
Before replacing all the values in equation 4 it is necessary to express the orbital radius for the perihelion and the aphelion from AU (astronomical units) to meters, and then from meters to kilometers:
⇒ 
⇒ 
⇒
⇒
Then, finally equation 4 can be used:


Hence, the speed at the aphelion is 10.75 km/s.
Ha! Lot of words but the question itself is easy.
The answer is 2.5 times 10 to the 5th power.
The main part of the numbers has the decimal point placed after the first digit.
Then for what number of power, you just count the number of decimal places moved.
I hope this helps you.