Answer:
The ball has kinetic energy
the kinetic energy is 945 J
Explanation:
Average speed = total distance / total time.
That's 172 km / 5 hr = 34.4 km//hr
Answer:
464.8 nm
Explanation:
The second wavelength of light can be calculated using the next equation:
<u>Where:</u>
<em>λ : is the wavelength of light</em>
<em>x: is the distance from the central maximum</em>
<em>d: is the distance between the spots </em>
<em>L: is the lenght from the screen to the bright spot</em>
For the first wavelength of light we have:
(1)
For the second wavelength of light we have:
(2)
By entering equation (1) into equation (2) we have:
Therefore, the second wavelength is 464.8 nm
I hope it helps you!
Answer:
This is due to bending of light ray passing through the medium.
Explanation:
This can be explained using the concept of refraction.
Refraction can be defined as the bending of light ray as it travels from one medium to another (it can be from the less dense to denser medium or denser to less dense medium)
For that of pencil in water, light ray travels from less dense medium(surrounding air) to denser medium(water). This causes the pencil to bend away from the normal rather than towards the normal (angle of refraction being greater than angle of incidence) and hence the reason for the bending.
NB: Normal line is perpendicular to the plane between the medium.
Answer:-The formula of to calculate KE = 1/2 m v^2
so we,
KE = 1/2 (450kg)(23m/s)^2
KE = 1/2 ×238050
KE = 119025
Explanation: In Physics Formulas mean everything.
