Answer:
The law of conservation of energy is the preserved form of energy.
Option (1) is correct that is the total amount of energy in the universe remains constant.Because energy is conserved.
Option (3) is correct since, it is conserved so, it can not be created or destroyed.
Option (4) Energy can change from one type to another like mechanical to electrical energy but it will remain conserved.
Option (5) is correct because in closed, isolated system energy is conserved.
Answer:
1/6 is the answer of this question
Explanation:
Explanation:
The velocity of car A relative to car B is (10km/h+40km/h)=50km/h
Answer:
D. 5.18 x 10⁻¹²
Explanation:
= rate at which sun radiates energy = 3.92 x 10²⁶ W
M = mass of sun = 1.99 x 10³⁰ kg
= rate at which sun's mass is lost
c = speed of light
Energy is given as
E = m c²
Taking derivative both side relative to "t"
![\frac{dE}{dt}=c^{2}\frac{dm}{dt}](https://tex.z-dn.net/?f=%5Cfrac%7BdE%7D%7Bdt%7D%3Dc%5E%7B2%7D%5Cfrac%7Bdm%7D%7Bdt%7D)
![3.92\times 10^{26}=(3\times 10^{8})^{2}\frac{dm}{dt}](https://tex.z-dn.net/?f=3.92%5Ctimes%2010%5E%7B26%7D%3D%283%5Ctimes%2010%5E%7B8%7D%29%5E%7B2%7D%5Cfrac%7Bdm%7D%7Bdt%7D)
= 4.4 x 10⁹ kg/s
t = time interval = 75 yrs = 75 x 365 days = 75 x 365 x 24 hours = 75 x 365 x 24 x 3600 sec = 2.4 x 10⁹ sec
= mass lost
mass lost is given as
![m = t\frac{dm}{dt}](https://tex.z-dn.net/?f=m%20%3D%20t%5Cfrac%7Bdm%7D%7Bdt%7D)
![m = (2.4\times 10^{9})(4.4\times 10^{9})](https://tex.z-dn.net/?f=m%20%3D%20%282.4%5Ctimes%2010%5E%7B9%7D%29%284.4%5Ctimes%2010%5E%7B9%7D%29)
m = 10.56 x 10¹⁸ kg
fraction is given as
fraction = ![\frac{m}{M}](https://tex.z-dn.net/?f=%5Cfrac%7Bm%7D%7BM%7D)
fraction = ![\frac{10.56\times 10^{18}}{1.99\times 10^{30}}](https://tex.z-dn.net/?f=%5Cfrac%7B10.56%5Ctimes%2010%5E%7B18%7D%7D%7B1.99%5Ctimes%2010%5E%7B30%7D%7D)
fraction = 5.18 x 10⁻¹²
The answer is 330 meters per second! hope this helped! please crown me if it did when you can!