Answer:
electricity because it has more percentage nd energy
Explanation:
mark me brainliest pl
I believe it is an electromagnet
The speed of the combined carts after the collision is 0.25 m/s
Explanation:
We can solve this problem by using the principle of conservation of momentum. In fact, the total momentum of the system must be conserved before and after the collision, so we can write:
where:
is the mass of the first cart
is the initial velocity of the first cart
is the mass of the second cart
is the initial velocity of the second cart
is the final combined velocity of the two carts
Re-arranging the equation and substituting the values, we find: the final velocity:
Learn more about momentum:
brainly.com/question/7973509
brainly.com/question/6573742
brainly.com/question/2370982
brainly.com/question/9484203
#LearnwithBrainly
Answer:
The answer is explained below.
Explanation:
The energy emitted during the de-excitation of an electron from a higher energy level to a lower energy level is directly proportional to the frequency of the emitted light.
Here, the total sum of the energies of 2 frequencies of light emitted in different stages is equal to the energy of a single frequency of light during the de-excitation of fourth level to ground level directly.
Hence the total sum of of the frequencies of 2 lights emitted in different stages is equal to the frequency of single frequency of light emitted during the de-excitation from fourth level to ground level directly.
The some of the energies of 2 frequencies emitted by one electron is equal to the energy of a single frequency when electron jumps directly.
Answer:
Vf = 5.05 m/s
Explanation:
To know this, you need to use the expressions for free fall.
In this case, we only know the length of the stick which is 1.3 m.
The stick is held vertically and then is allowed to fall freely. Now, we want to know the final speed of the stick when it reach the floor.
In this case, we can assume that when the stick is allowed to fall, the innitial speed is 0. Then, the other thing we can assume is the height where the stick is put to fall. In this case, the height is the same as the length, because the stick is already on the floor but is standing vertically.
So, we have here the height, and if the stick is falling, is because of gravity, which is 9.8 m/s²
To calculate the speed, you can use this expression:
Vf = √2*g*h
Replacing the data we have:
Vf = √2 * 9.8 * 1.3
Vf = 5.05 m/s
