Answer:yes
Explanation:
Work is done on an object when an applied force causes the object to move in the same direction as the force
Answer:
0.48 kW
Explanation:
Given;
Efficiency of solar panel = 0.15
Total power input of the solar panel = 3.2kW
The useful power output of the solar panel is the amount of power transmitted by the solar panel for use. It can be expressed as a function of its efficiency and total power input.
Useful power output = efficiency × Total power input
Substituting the given values;
Useful power output = 0.15 × 3.2 kW = 0.48 kW
Answer: A, C and D
Explanation:
Interference occurs when two waves superimpose to form a wave having a smaller or larger amplitude.
Constructive interference is said to occur when two waves superimpose to produce a wave having larger amplitude. It occurs for the waves having phase difference of multiple of 2π. On the other hand, destructive interference occurs for the waves having phase difference π, 3π, ..and so on.
In the given picture, the bright regions represent constructive interference where as the dark ones between them represent destructive interference. Thus, the correct letters representing constructive interference are: A, C and D.
As we know that as per Newton's II law we have
![F = \frac{dP}{dt}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7BdP%7D%7Bdt%7D)
here we will have
= change in momentum
= time interval in which momentum is changed
now in order to have least injury during jumping we need to have least force on the jumper
so in order to have least force we can say that the momentum must have to change in maximum time so that amount of force must be least
So we need to increase the time in which momentum of the system is changed
<span>So we want to know what does occur when light is refracted from a rough and unpolished surface. The correct answer is A. the original pattern of the light is distorted because rough and unpolished surfaces dissipate light in all directions so we cant get a clear image.</span>