To increase the current and lower the voltage of the appliance to make it safe for use
Answer: No, the student does not do any work on the wall.
Explanation: The work is defined as the movement of an object done/caused by a force.
And it can be calculated as:
W = F*d
where W is work, F is force and d is the displacement of the object
In this case, the student is applying force on the wall, so we have the first part, but we also know that the wall does not move, so in this case, d = 0, which would imply that the work applied to the wall must be equal to zero
(because W = F*0 = 0)
So the answer is no, the student does not do any work on the wall.
Answer:
the focal length of the mirror is :
Explanation:
Use the formula for the formation of image using a divergent mirror and recalling that the image (s') that this mirror formed is virtual, so it is entered as a negative number in the formula. Use the object position (s) as 10, the image position (s') as -2, and derive the value of the focal length:
To get to know the characteristics of the image formed, you complete the ray diagram.
When the object is place beyond C the image formed is usual smaller than the object.
The image is also inverted.
∴The best statement that describes the image is <span>D.) It will be smaller than the vase and inverted</span>