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What is the color of the hottest star and why?
The hottest star is of blue color. The more the heat , the more is the excitement of electrons in star. This electrons vibrate with high frequency and emits light. Since the frequency is high, it appears as of blue color
Is the color of star an effect of its temperature?
Yes. The apparent colour of a star is related to the peak wavelength of the light it emits. According to Wien's displacement law (look it up in Wikipedia) the peak wavelength is inversely proportional to the temperature. The higher the temperature, the shorter the peak wavelength. Wavelength decreases as one moves from red to blue in the visible spectrum, so a red star is cooler than a blue one.
Describe two ways in which the thermal radiation spectrum of an 8000 K star would differ from that of a 4000 K star?
First, the energy emitted at every wavelength is higher for the hotter star. Secondly, the peak wavelength of the hotter star is shorter than that of the 4000K one.
What is a red shift and what does it mean for a star?
It's a change (decrease) in the frequency of the light we receive from the star. Equivalently, an increase in the wavelength. It usually means the star is moving away from us, though it might also be caused (usually to a lesser extent) by the star's gravitation.
The reason that most extrasolar planets are found close to their parent stars is?
the amount and frequency of the star's motion are both higher.
Which star will emit the shortest wavelength of its peak frequency?
Blue star
How do you get a wave's frequency?
Measure the time for a wave to pass a given point- peak to peak. The number of complete peak-to-peak waves per second/minute is the frequency of that wave.
What is the Resonant frequency of a piezoelectric transducer?
It's peak frequency
Light frequency from an incandescent lamp depends on what?
The peak Frequency
How is the peak frequency of emitted light related to the temperature of its incandescent source?
The peak frequency is directly proportional to the absolute temperature of the emitter. Temperature increases frequency also increases.
Utility voltage is 115 volts at a frequency of 60 Hz what is the peak to peak?
A: Take 115 volts and multiply by 2.82. The frequency does not matter but he voltage does
What is frequency of a wavelengh?
Frequency and wavelength are two characteristics of waves and are not characteristics of each other. Wavelength is the length of a wave from peak to peak or trough to trough. Frequency is how often the wave peaks arrive.
What is the frequency value of the first dominant peak in the frequency response?
buat lab ke?haha
What is the frequency for star utsav?
Frequency 27500
What has the lowest frequency short wave or long wave radio?
Short wave frequency has a shorter wave length. Frequency is defined as number of cycles per second. If you have shorter waves (measure from peak to peak) you can get more of these packed into one second, so the frequency is higher.
How do you Write it past passive form-set the amplitude of the input signal 10 volt peak to peak and the frequency at 1khz?
the amlitude of the input signal 10 volt peak to peak was set at 10 khz
How do you define a peak in a mass spectrum?
A peak in a mass spectrum is a wavelength or frequency that shows a much greater intensity than the surrounding values.
