Although newts are born in water, they spend the majority of their life on land, going back to the water only to reproduce. They are 8 inches long, with rough skin, stubby legs, and fangs. Some of those in the Pacific Northwest are poisonous.
What are traits?A discrete variation of an organism's characteristic that is visible, quantifiable, and shows itself in an observable way is called a phenotypic trait (also known as a trait or character state).
For instance, polygenetic inheritance is used to pass on phenotypic traits such as eye color (green, blue, brown, and hazel).
Phenotypes include things like height, wing length, and hair colour. Observable characteristics that can be measured in a laboratory, such as hormone levels or blood cell counts, are frequently included in phenotypes.
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laser light (λ = 568.7 nm) is incident on a single slit. what is the maximum width of the slit (in nm) for which no diffraction minima are observed? round to the closest integer.
The maximum width of the slit (in nm) for which no diffraction minima are observed is 569 nm.
What is the maximum width of the slit?The maximum width of the slit (in nm) for which no diffraction minima are observed is calculated by applying the following equation.
sinθ = mλ/a
where;
m is = 1 order integerthe maximum angle for diffraction to occur = 90⁰λ is the wavelength = 568.7 nma is the maximum width of the slitSubstitute the given parameters and solve for the maximum width of the slit (in nm) for which no diffraction minima are observed.
sin(90) = (1 x 568.7 nm) / a
1 = (568.7 nm) / a
a = (568.7 nm) /1
a = 568.7 nm
to the closest integer = 569 nm
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What is the momentum of a 100000 kg truck whose velocity?
The truck has a velocity of 10 m/s, then its momentum would be: 1,000,000 kgm/s.
What is velocity?
Velocity is indeed the direction at which an object is moving and serves as a measure of the rate at which its position is changing as seen from a specific point of view and as measured by a specific unit of time (for example, 60 km/h northbound). In kinematics, the area of classical mechanics that deals with the motion of bodies, velocity is a fundamental idea. A physical vector quantity called velocity must have both a magnitude and a direction in order to be defined. Speed is the scalar exact number (magnitude) of velocity; it is a coherent derived unit for whom the quantity is measured in metres per second (m/s or m/s1) in the SI (metric system). In contrast to "5 metres per second east," which is a vector, "5 metres per second," for instance, is a scalar.
The momentum of the 100000 kg truck is equal to the product of its mass and velocity. Therefore, if the velocity of the truck is given, the momentum can be calculated using the following equation:
Momentum = Mass x Velocity
For example, if the truck has a velocity of 10 m/s, then its momentum would be 100000 kg x 10 m/s = 1,000,000 kgm/s.
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We observe a cluster and determine that only stars above 15 solar masses have left the main sequence.
i.) Would you expect to see any giants/supergiants in this cluster at
this time? Why or why not?
ii.) Would you expect to see any white dwarfs in this cluster at this
time? Why or why not?
When we observe a cluster to determine that only 15 solar masses have left the main sequence, we expect to see any giant/ supergiant but, dwarfs are not visible.
i.) As the cluster's age increases, the mass of the main sequence turnoff stars decreases. According to the H-R diagram, stars with mass 3 times more than the mass of sun are large, hot and bright. They have short life span and are on the upper right region of the graph, hence they have low temperature and high luminosity. They have large diameter, so we can expect to see giants/ supergiant but disappear at the blink of our eye.
ii) For the white dwarfs to be visible, the temperature should be high, luminosity should be low and the mass should be less, almost 8 solar masses. Since, 15 solar masses have left the sequence, white dwarfs will not be visible.
Hence, giants/supergiant can be seen for a short period of time when 15 solar masses leave the main sequence, but white dwarf will not be seen.
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