Answer:
82.3 J
Explanation:
PE = mgh
PE = (2.80 kg) (9.8 m/s²) (3.00 m)
PE = 82.3 J
The answer is:
18 years.
The explanation:
when Star 1 is 34 light years from Earth and Star 2 is 52 light years from Earth. that means the distance between star 1 and star 2 is 52-34 = 18 years so, If Star 2 explodes as a supernova so, the explosion would take 18 years to be seen from a planet orbiting Star 1.
Answer:
8 s
Explanation:
Damping factor, F is given by
where Q is quality factor
Also, we know that the settling time, T is given by
where W is the resonant frequency.and substituting the first equation here we get
Since it takes 2% of final value to settle and considering 100 rad/s for resonant frequency and taking quality factor of 100 then
Answer:
The balloon will collapse
Explanation:
When air is removed from the bell jar, the balloon will collapse if the internal pressure from the balloon does not balance the atmospheric pressure from the surroundings.
