Answer:
Physics is the natural science that studies matter, its motion and behavior through space and time, and the related entities of energy and force.
Ancient history. Elements of what became physics were drawn primarily from the fields of astronomy, optics, and mechanics, which were methodologically united through the study of geometry. These mathematical disciplines began in antiquity with the Babylonians and with writers such as Archimedes and Ptolemy.
Answer:
Observation 1 represents a solar wind because solar winds are a continuous stream of particles given off by the sun.
Explanation:
Answer and Explanation:
the electronic devices always have some noises present in the signal
there are some important considerations in optical fiber communications these are.
- the noise which is contributed by transmitter are electronic random noise, low frequency noise
- noise which is contributed by laser are relative intensity noise, mode partition noise, conversion of phase noise to amplitude noise.
- noise contributed by photo detector are quantum shot noise, shot noise from dark current, avalanche multiplication noise.
PRINCIPLE OF POPULATION INVERSION :
The principle of population inversion is defined as for production of high percentage of simulated emission for a laser beam the number of atoms in higher state should be greater than lower energy state
Answer:
Concave mirror,-20.48m
Explanation:
Concave mirrors-This is because the objects are made smaller by the mirror, so they appear farther away.
#we find the image distance from the magnification:
#We find the focal length from:
r=2f=-10.24m*2=-20.48m
#The mirror has a negative radius(-20.48m) of curvature since its vertex lies to the right of the center of curvature
Answer:
Hey buddy, it is D
Explanation: Just do the math, take 30 and then subtract 20 ok and then yo would have 10, then the 10is really the 30 and the 30 is pointing to the left so 10 newtons to the left and also your welcome