I):final velocity=initial velocity+acceleration due to gravity*time of travel
Therefore,
v=0+9.8*3.1
=30.38 m/s
If by floor you meant water bed then i think there isn't enough info in the question.
Answer:
n₁ > n₂.
prisms are made of glass with refractive index n₂ = 1.50, so the fluid that surrounds the prism must have an index n₁> 1.50
Explanation:
Total internal reflection occurs when the refractive index of the incident medium the light is greater than the medium to which the light is refracted, let's use the refraction equation
n₁ sin θ₁ = n₂ sin θ₂
the incident medium is 1, at the limit point where refraction occurs is when the angle in the refracted medium is 90º, so sin θ₂ = 1
n₁ sin θ₁ = n₂
sin θ₁ = n₂ / n₁
We mean that this equation is defined only for n₁ > n₂.
In our case, for the total internal reflection to occur, the refractive incidence of the medium must be greater than the index of refraction of the prism.
In general, prisms are made of glass with refractive index n₂ = 1.50, so the fluid that surrounds the prism must have an index n₁> 1.50
Answer:
A. Archinedes
Explanation:
Archimedes' principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid. This is a first condition of equilibrium.
The answer is; The cloud is cool and lies between you and a hot star.
Absorption lines occur when the electrons of an atom absorb energy through a specific wavelength of light and the electrons ‘jumps’ from a lower energy level to a higher energy level. Absorption lines are viewed as black lines in a continuous spectrum
The shell's horizontal position and vertical position are given by
where is the given speed of 1.70 x 10^4 m/s, and is the acceleration due to gravity (taken here to be 9.80 m/s^2).
To find the horizontal range, you can use the range formula,
with being the angle at which the shell is fired.
Alternatively, we can work backwards and deal with part (b) first:
(b) The time spent in the air is the time it takes for the shell to reach the ground. To find that, you solve for in :
(a) After this time, the shell will have traveled horizontally