A glass tube is filled with hydrogen gas. An electric current is passed through the tube, and the tube begins to glow a pinkish
/purple color (this is how fluorescent bulbs and neon signs produce light). If you were to pass this pink light through a prism to separate the individual light frequencies, you would see that this pink light is composed of four distinct colors: violet, green, blue, and red. Notice the similarity between image (b) above and image (b) from question #3. Which is the best description of why this occurs?
2 answers:
You might be interested in
Solution:
/ Em₀ = 0.30
Explanation:
In this problem, we apply the connection between mechanical energy, kinetic energy, and gravitational potential energy.
K = ½ m v²
U = mgh
We assess the mechanical energy at two positions:
Initial. Lower
Em₀ = K = ½ m v²
At its highest point
= U = mg and
Now let's compute
Em₀ = ½ m 3.6²
Em₀ = m 6.48
= m 9.8 × 0.2
= m 1.96
Thus the energy lost is given by:
/ Em₀ = m 1.96 / m 6.48
/ Em₀ = 0.30
This means that 30% of the sun's energy is transformed into potential energy.
There are various conversion possibilities.
This energy changes into thermal energy affecting the spores and air, since it cannot be regained.
Details that are not provided: the problem figure is included.
We can address the exercise by applying Poiseuille's law. This law indicates that for a fluid flowing in a laminar manner within a confined pipe,
where:
represents the pressure difference across the two ends
denotes the viscosity of the fluid
L signifies the length of the pipe
indicates the volumetric flow rate, where
is the cross-sectional area of the tube and
refers to the fluid's velocity
r stands for the pipe's radius.
This law can be utilized for the needle, allowing us to compute the pressure difference between point P and the needle's end. In this scenario, we have:
is the dynamic viscosity of water at
L=4.0 cm=0.04 m
and r=1 mm=0.001 m
Substituting these values into the formula yields:
This pressure difference specifies the value between point P and the needle's termination. As the end of the needle is under atmospheric pressure, the gauge pressure at point P, relative to atmospheric pressure, is exactly 3200 Pa.
Response:
The speed at which the distance from the helicopter to you is changing (in ft/s) after 5 seconds is ft/ sec
Clarification:
Provided:
h(t) = 25 ft/sec
x(t) = 10 ft/ sec
h(5) = 25 ft/sec. 5 = 125 ft
x(5) = 10 ft/sec. 5 = 50 ft
At this point, we can determine the distance between the individual and the helicopter utilizing the Pythagorean theorem
Now, let's calculate the derivative of distance in relation to time
By plugging in the values for h(t) and x(t) and simplifying, we arrive at,
=
=
ft / sec