Answer:
I honestly have no idea bro.
Explanation:
Hope that helps have a great night.
Engineers must understand the thermal properties of materials to be able
to predict the performance of any given material over its lifetime in a
specific application. Engineers apply their understanding of the
thermal properties of materials to the design of efficient heat transfer
materials for better engines, spacecraft and electronic devices. They
also examine the thermal properties of insulation to design more
efficient buildings and homes. Engineers develop ways to minimize heat
transfer from a motor to the surrounding environment. Often they find
ways to insulate the motor to decrease the convective heat transfer from
the motor. They design a refrigerator to keep heat out of the inside,
as well as keep the refrigerator contents cool. hope this helped
120 km / 60 min
2 km / 1 min
1 km / 30 sec
0.5 km / 15 sec
0.03333 km / sec
0.03333 km = 33.33 m
Secondary wave is the answer
Answer:
b) The star is moving away from us.
Explanation:
If an object moves toward us, the light waves it emits are compressed - the wavelength of the light will be shorter, making the light bluer. On the other hand, if an object moves away from us, the light waves are stretched, making it redder. If from laboratory measurements we know that a specific hydrogen spectral line appears at the wavelength of 121.6 nanometers (nm) and the spectrum of a particular star shows the same hydrogen line appearing at the wavelength of 121.8 nm, we can conclude that the star is moving away from npos, since the wavelength related to that star is more expanded.
