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Prisms and gratings have different dispersive properties. Grating has a linear dispersion of wavelengths meaning the band on the focal plane varies linearly with the wavelength. Prisms are not linear, the shorter the wavelength the greater the dispersion. Thus, when a spectrum is being scanned, the dispersive device needs to rotates different amounts depending on whether it is prism or grating to focus light on the exit slit. If its grating, the slit width will need to be varied minimally; if it is a prism, the slit width will need larger changes as the dispersion gets greater.
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What is value of dielectric constant if half space is filled by water and half is filled by mica?
The effective dielectric constant for the system would be the weighted average of the dielectric constants of water and mica, calculated based on their respective volumes in the half space. This can be determined using the formula: effective dielectric constant = (V_water * ε_water + V_mica * ε_mica) / (V_water + V_mica), where V is the volume fraction and ε is the dielectric constant for water and mica.
What will be the value of screening constant in Moseleys law for L shell as K have value 1?
In Moseley's law, the screening constant (σ) accounts for the shielding effect of inner electrons on the effective nuclear charge experienced by outer electrons. For the L shell, which contains electrons in the second energy level, the screening constant is typically around 1. This means that when calculating the effective nuclear charge for L shell electrons, you would use a value of 1 for σ, assuming K shell electrons provide minimal shielding. Therefore, the screening constant for the L shell would be approximately 1 when K is set to 1.
What is the thermal noise level of channel with bandwidth of 10KHz carrying 1000 watts of power operating at 50 c?
The thermal noise level can be calculated using the formula P = kTB, where P is the power, k is the Boltzmann constant, T is the temperature in Kelvin, and B is the bandwidth. Plugging in the values, we get T = P / (k * B) = 1000 / (1.38e-23 * 10,000) ≈ 7.25e9 Kelvin. Note that this result seems unusually high for typical scenarios. Double-check your calculations and inputs to ensure accuracy.
What is effect of tempthe rate constant of a reaction?
The rate constant of a reaction generally increases with temperature due to the Arrhenius equation, which shows that higher temperatures provide reactant molecules with more kinetic energy, leading to more frequent and effective collisions. As a result, the reaction rate accelerates. Conversely, a decrease in temperature typically lowers the rate constant, slowing down the reaction. Other factors, such as catalysts, can also influence the rate constant by lowering the activation energy required for the reaction to occur.
If the mass of an object does not change a constant net force on the object produces a constant what?
If the mass of an object does not change, a constant net force applied to the object will produce a constant acceleration according to Newton's Second Law (F=ma). This means that the object will continue to accelerate at a constant rate as long as the force is applied.
How thermal noise is derived as KTB?
Thermal noise is derived as KTB where K is the Boltzmann constant (1.38 x 10^-23 J/K), T is the temperature in Kelvin, and B is the bandwidth of the system. This equation relates the power of thermal noise to the temperature and bandwidth of a system, with higher temperatures and wider bandwidths resulting in higher levels of thermal noise.
What is time bandwidth product?
The time-bandwidth product is a concept in signal processing and optics that quantifies the trade-off between the duration of a signal in the time domain and its spectral width in the frequency domain. It is often expressed mathematically as the product of the pulse duration and the bandwidth, with a minimum value defined by the uncertainty principle. For example, in a Gaussian pulse, this product is constant and reflects the inherent limitations of simultaneously achieving short pulses and wide bandwidths. Understanding this relationship is crucial for applications in telecommunications, imaging, and laser physics.
What is the relation between bandwith and gain?
The product of bandwidth and gain is constant. If bandwidth increases then gain decreases and vice versa.
What is the relationship between gain and bandwidth?
The basic relationship is that the two together form some kind of constant wherein you cannot have more of one without giving up some of the other. Want more gain? You'll have to work with a narrower bandwidth. Want more bandwidth? You will have to sacrifice some gain to get it.
Which provides a constant bandwidth for the complete duration of message transfer is a?
message switch
Is displaying the attributes of a file delay sensitive or bandwidth sensitive?
it is delay sensitive becoz it doesnt require constant stream for data transfer which is related to bandwidth.
Why gain bandwidth product is constant?
The gain and bandwidth product is constant only for first order systems. However many complex systems which can be converted and studied as first order, it holds good. This is simple mathematics as in the first order system the frequency appears in the denominator. So if it increases by x times then gain (the modulus of the transfer function) is reduced by x times (approximately).
When was Constant Contact created?
With Constant Contact, you can create effective email marketing and other online marketing campaigns to meet your business goals. 9xbn4IY
What we're some reasons for the fall of the song dynasty?
a large bureaucracy and constant wars cost too much. The army was run by civilians and became in effective.
What is the formula to calculate the effective spring constant of a system with multiple springs connected in parallel?
To calculate the effective spring constant of a system with multiple springs connected in parallel, you can use the formula: 1/keff 1/k1 1/k2 1/k3 ... 1/kn, where keff is the effective spring constant and k1, k2, k3, etc. are the individual spring constants.
What is value of dielectric constant if half space is filled by water and half is filled by mica?
The effective dielectric constant for the system would be the weighted average of the dielectric constants of water and mica, calculated based on their respective volumes in the half space. This can be determined using the formula: effective dielectric constant = (V_water * ε_water + V_mica * ε_mica) / (V_water + V_mica), where V is the volume fraction and ε is the dielectric constant for water and mica.
When velocity is positive and acceleration is zero what happens to an objects motion?
When acceleration is zero, then the object is moving in a straight line with constant speed. (That's the effective meaning of constant velocity.)
