Answer:
The potential energy of the system is .
Explanation:
Given :
Mass of object , m .
Spring constant , k .
Total energy , E .
Maximum displacement , A .
We have to find potential energy when its kinetic energy is equal to 3/4E .
Now, we know :
Total energy is constant in simple harmonic motion.
Therefore ,
Total energy = Kinetic energy + potential energy .
Hence , this is the required solution.
I believe the photosphere which is the bright surface of the sun that we see
Answer: It will amount to 11p after 20 years.
Explanation:
Formula :
Simple interest = Principal x rate x Time (i)
Amount = Principal + Interest
Amount = Principal + Principal x rate x Time
Amount = Principal (1+ rate x Time) (ii)
Given: Principal = p
After 1 year , amount = 1.5p
After 3 years , amount = 2.5p
From (ii)
Amount after 20 years = p(1+ 0.5 x 20) = p(1+10)=11p
It will amount to 11p after 20 years.
Answer:
Explanation:
To determine the final temperature of the sample, we use the specific heat formular as follows:
Finally, the temperature of the aluminium sample has raised 18 K.
Answer:velocity=
Explanation:
We shall use conservation of energy to solve this problem
we have
Potential energy of King Kong at top of building = His kinetic energy at the bottom
Potential energy of an object = = 20000 kg
Where m is mass of an object(20000 kg)
g is accleration due to gravity = 9.81
h is the height above the surface of earth = 1450 feet = 441.96 meters
Applying values we get
......................(i)
Now Kinetic energy is given by
.......................(ii)
Equating i and ii we get
86712.552 =
Applying values we get