Answer:
Explanation:
w = mg, and no matter where we go, our masses will never change. Our weight does, however, depending upon the gravity of where we are. Let's first find the weight of the man on earth, where the pull of gravity is -9.8 m/s/s:
w = (60)(-9.8) so
w = 590 N rounded from 588. It's negative because weight is a downward value (whereas Normal force is the upward value of this measurement, making Normal force the positive of this same number)
Now for the moon, where gravity is 1.6 m/s/s:
w = (60)(-1.6) so
w = -96 N
Answer:
Explanation:
Complete Question:
A.Compute no of electrons you expect to count if silicon detector is struck with a 1.04 Mev gamma ray produced in a decay of 136 Cs nucleus.
b.Explain counting of electrons is more precise as the detector is cooled well below room temperature
Answer:
a.
Gamma ray energy =
photon strikes the surface excite the electrons to move from valence band to conduction band where then counted by detector.
energy gap between valence band and conduction band in case of silicon = 1.1 eV
The minimum amount of energy required is 1.1 ev
minimum number of electron counted is = 
=
b.
In the case of semi conductors
forbidden energy gap in inversely proportional to temperature
with decrease in temperature forbidden energy gap increases,hence electrons jumping from valence band to conduction band decreases and hence counting by detector decreases
Answer:
Tundra Biome
Explanation:
Permafrost is a type of soil that is frozen all year round. It consists of rocks, soils and ice. The ice or frost holds the earth materials together.
The tundra biome lies below the arctic circle close to the north pole. Most of the earth here is predominantly frozen all year round. A layer of glacier covers the surface and a deep lying layer of permafrost follows suit.
Some mountain tops capped with ice shows this tundra features.
Most tundras are termed cold deserts as they have little to no precipitation all year round. There is absence of vegetation cover as a result of low growing season of the plants.
Answer:
A. Particles in air move in circles as the wave moves forward.
B. Particles in air move forward but not backward as the wave moves
forward.
C. Particles in air move up and down as the wave moves forward.
✔ D. Particles in air move forward and backward as the wave moves
forward.
Explanation:
The waves transfer energy from the source of the sound, e.g. a drum, to its surroundings. Your ear detects sound waves when vibrating air particles cause your ear drum to vibrate. The bigger the vibrations the louder the sound.
