Answer:
(a) charge q=5.33 nC
(b) charge density σ=10.62 nC/m²
Explanation:
Given data
radius r=0.20 m
potential V=240 V
coulombs constant k=9×10⁹Nm²/C²
To find
(a) charge q
(b) charge density σ
Solution
For (a) charge q
As
For (b) charge density
As charge density σ is given as:
σ=q/(4πR²)
σ=(5.333×10⁻⁹) / (4π×(0.20)²)
σ=10.62 nC/m²
The correct answer is option 2. Systems, by
nature, tend to undergo changes toward higher entropy and lower energy since
this is the state where they are most stable. Entropy is the degree of
disorderliness of a substance. Systems tend to go to higher disorder since
systems always tend to change which can be linked to disorder and is
inevitable.
Answer: This will be based on how much strength she put into the rock when throwing it
Explanation:
Answer:
I think the answer is A. X: Mold Y: Cast
Explanation:
Hope that helps!!!
Answer:
Paint can which is placed higher than other can will have more potential energy. Because according to the definition of the potential energy an object placed at some higher place when released to the ground will have greater impact than the one placed at some lower place. Painter can give the other can more potential energy by placing it at some height greater than the other cans.
Explanation:
To understand this, we need to understand the concept of potential energy.
Let’s assume two objects A and B. If A is placed at 10 meters above the ground and if B is placed 20 meters above the ground then according to the definition of potential energy, object B will have greater potential energy.
Similarly, in our question, we have paint cans, one is carried at some higher place through a ladder by the painter will have greater potential energy as compared to the one which is placed at ground.
Paint can which is placed higher than other can will have more potential energy. Because according to the definition of the potential energy an object placed at some higher place when released to the ground will have greater impact than the one placed at some lower place. Painter can give the other can more potential energy by placing it at some height greater than the other cans.
