For a standing wave if both ends are fixed, the wavelength must be such that the length of the string be an exact multiple of a half wavelength.
The longest wavelength must be such that the length of the string must be equal to half a wavelength, and therefore the wavelength must be double the length of the string; That is 240× 2 = 480 cm
The second longest wavelength must be such that the length of the string must be equal to a whole wavelength, so the second longest wavelength must be 240 cm.
The third longest wavelength must be such that the length of the string must be equal to 1.5 times the wavelength, so the wavelength must be 240/1.5 = 160 cm.
So what you do is you use the formula shown below:
specific heat capacity = energy required / (mass * change in temperature)
here ,
energy required = 10.0°C Note that cal. is short form for °C
mass (m) = 3.1g
change in temperature (ΔT) = 17.9°C Note that "ΔT" means change in temperature
So, plugging the values into the formula, we get,
Specific heat capacity=
=
= 0.1802 cal./g°C <span>i rounded the answer to the fourth decimal point
</span>
Answer:
1.)Evaporation, 2.) solid
Explanation:
hope this helps can i get brainliest
Use Doppler's formula to find the radial velocity of star.
Here,
= Radial Velocity
c = Speed of light
= Shift in wavelength
= Laboratory wavelength of spectral line
Rearrange for ,
Find shift in wavelength,
Replacing our values we have then,
Therefore the radial velocity of star is 
m/s
In this case the symbol of implies that the star is receding the observer and the wavelength turns to red, then is red shifted.
To imagine that you were chosen to fly the first space shuttle that could travel at the speed of light and write a story about the trip, it is necessary to research astronomy in more detail to generate a more consistent essay.
<h3 /><h3>What would it be like to travel at the speed of light?</h3>
In science fiction films, it is common to portray stars as white, illuminated and stretched lines, demonstrating speed, but this is an unfounded reasoning, since light has no color and stars do not move at that speed.
Therefore, a trip at the speed of light would be common, the only difference would be the reduction of time when arriving at the places, as for example, according to research, a trip from Earth to Pluto at the speed of light would take about five and a half hours.
It would also not be possible to see the stars as in the movies, as their photons are not visible.
Find out more information about astronomy here:
brainly.com/question/4239329
