Answer:
Answer is C
Explanation:
Let's say the pendulum starts swinging from its max height from the left. It then will go down and reach the equilibrium position, this will make it lose GPE while gaining KE (the loss in GPE = gain in KE). At the equilibrium position it has the max KE (max velocity) and minimum GPE. After passing the equilibrium it then starts to head up to the max height on the right, the pendulum gains GPE while losing KE and at the top will have minimum KE while having max GPE. Meaning throughout its joruney the total energy remains constant as
Total energy = KE + GPE
I have attached a simple diagram below, the y axis is the energy and x axis being the time (where t = 0 is the pendulum starting from max height left of the equilibrium). The green curve the the GPE and blue curve is KE. Red line shows that at all times the energy is constant.
Answer:
To keep them from destroying or disturbing any evidence.
Explanation:
Law enforcement needs to be able to properly analyze and investigate all evidence for when the crime is heard in a court of law.
Answer:
Explanation:
For third normal mode of vibration
l = 
, λ is wavelength , l is length of string .
.4 =
λ = .267 m
velocity = 
T is tension and m is mass unit length
m = .5 x 10⁻³ / 40 x 10⁻²
= .00125 kg / m
Putting the values
velocity = 
= 253 m /s
frequency
= velocity / λ
= 253 / .267
= 947.5 Hz .
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm.[1] In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz.
The spectrum does not, however, contain all the colors that the human eyes and brain can distinguish. Unsaturated colors such as pink, or purple variations such as magenta,
are absent, for example, because they can be made only by a mix of
multiple wavelengths. Colors containing only one wavelength are also
called pure colors or spectral colors.
Visible wavelengths pass through the "optical window", the region of the electromagnetic spectrum that allows wavelengths to pass largely unattenuated through the Earth's atmosphere. An example of this phenomenon is that clean air scatters
blue light more than red wavelengths, and so the midday sky appears
blue. The optical window is also referred to as the "visible window"
because it overlaps the human visible response spectrum. The near infrared
(NIR) window lies just out of the human vision, as well as the Medium
Wavelength IR (MWIR) window, and the Long Wavelength or Far Infrared
(LWIR or FIR) window, although other animals may experience them.
I hope this helps
if air is blown with a speed of 15 m/sec across the top of one side of a u-tube containing water, the difference between the water levels on the two sides is 1.3 cm.
<h3>What is density?</h3>
The density is the ratio of the mass and volume of the particular object or liquid.
Applying the Bernoulli's equation across the ends of the tube A and B, we have
Substituting ρ = 1.2 , v = 15 and 
In the left limb, 
In the right limb, 
The pressure at C and D are same.
Substituting from the above equations , we have,
h = -1.3 cm
The height to the left limb is greater.
The difference between the water levels on the two sides is 1.3 cm.
Learn more about density.
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