Answer:
I think 5 km/h but I am not sure
Density = mass / volume = 7/14 = 0.5!g/cm^3
Answer:
2 ans : the bell has 8550 J energy
Answer:

Explanation:
We have,
The surface temperature of the star is 60,000 K
It is required to find the wavelength of a star that radiated greatest amount of energy. Wein's displacement law gives the relation between wavelength and temperature such that :

Here,
= wavelength

So, the wavelength of the star is
.