Given conditions:
height of object = 7.5cmdistance of object from mirror = 14 cmfocus length = -7 cmimage distance = ?
Using mirror formula:
1/(focus length) = 1/(object distance) + 1/(image distance)
or, -1/7 = 1/14 + 1/(image distance)
or, image distance = -4.66cm (the image formed is a virtual image)
Also, magnification of image is:
image height /height of object = - image distance /object distance
or, image height = - image distance / object distance * height of object
or, image height = -(-4.66) / 14 * 7.5 = 2.49 = 3(nearest whole number)
Answer:
Explanation:
Let the mass of tomato is m and the height from which it falls is h.
Let the tomato its the ground with velocity v.
The potential energy of the tomato at height h
U = m x g x h
The kinetic energy of tomato as it hits the ground
K = 1/2 mv^2
According to the question,
85.6 % of Potential energy = Kinetic energy
Answer:
I matched the answers you requested above
When a red giant has insufficient mass it pretty much sheds its outer layer to leave the center core know as the white dwarf
Answer:
The sympathetic nervous system _____decelerates_______digestion and __accelerates___________blood pressure. See the explanation below, please.
Explanation:
The sympathetic nervous system together with the parasympathetic make up the autonomic nervous system. The sympathetic system acts in situations of stress, prepares the body for "fight or flight", increases heart rate and blood pressure at the cardiovascular level, at the digestive level it slows down the system, produces bronchodilation, pupil dilation (mydriasis).
