Answer:
W= 
Explanation:
a) Yes, In the absence of external torques acting on the system, the angular momentum is conserved.
b) By the law of conservation of energy angular momentum
c) work done in pulling the chord W= Final kinetic energy(K_2)-Initial Kinetic energy(K_1)
Now,
J
Therefore, Work done W=
In order to find out what it should be the scientific notation, you've got to get it between 0.1 and 9.9, therefore, you've got to divide it by 10 million
46,500,000 / 10,000,000 = 4.65
This is then in the correct form, and you've then got to find the notation.
To do this, you need to keep dividing 10,000,000 until you get to 10.
10,000,000/10= 1,000,000/ 10= 100,000/ 10= 10,000/10= 1,000/ 10= 100/10= 10
You've divided it by ten six times, therefore, the scientific notation is 10^6.
Therefore, 46,500,000 in scientific notation is 4.65 x 10^6
Hope this helps :)
Answer:
Explanation:
A closed system can exchange energy but not matter, with its surroundings. An isolated system cannot exchange any heat, work, or matter with the surroundings, while an open system can exchange energy and matter.
Hope this helped you!
Answer:
D. A record of all the physical activity you complete in one week.
Explanation:
A "Fitness Log" allows you to keep track of your workout or exercise. Therefore, it is <em><u>a record of the different workout you've managed to complete within a time frame</u></em>. It gives you several information such as the<em> type of workout you've completed, its duration and the time of the day it was performed</em>. This makes a person motivated to exercise because he can see his progress. He may also include <em>his mood before and after workout</em> in order to become more mindful in exercising and many other things.
In this graph, what is the displacement of the particle in the last two seconds?of the particle in the last two seconds?
<span>0.2 meters
2 meters
4 meters
6 meters</span>
In this graph, the displacement of the particle in the last two seconds is 2 meters.
