Grass obtains 10% of the energy of the Sun. When a mouse eats the grass, it gets only _____ of the Sun's energy while _____ is lost as heat. 0.1%; 0.9% 1%; 0.9% 0.01%; 0.009%
Answers
Answer 1
Answer:
Grass obtains 10% of the energy of the Sun. When a mouse eats the grass, it gets only 1% of the Sun's energy while 9% is lost as heat. It has already been known that only 10% of energy gets transferred from one link of the food chain to another. The answer to this question can be easily deduced from this fact.
a scientific paradigm is is a distinct set of concepts or thought patterns, including theories, research methods, postulates, and standards for what constitutes legitimate contributions to a field.
A 1.0 µC test charge travels along an equipotential line a distance of 0.20 cm between two parallel charged plates with a field strength of 500.0 N/C. What is the change in voltage? (µC = 1.0 × 10^-6 C)
Answers
This question is written by a master of deception and distraction. It's full of so many red herrings that it's tough to walk past it too closely.
In order to answer this question correctly, you don't need to know the magnitude of the test charge, the distance it travels, or the field strength between the plates. The whole question lies in that magic word "equipotential".
An 'equipotential' line is a path along which the electrical potential is the same at every point. It's analogous to a 'contour line' on a topographic map, or an isobar on a weather map.
A charge moving along such a line uses no energy to travel that path, and it encounters no change in voltage anywhere in its travels.
A 4,000-kg car traveling at 20m/s hits a wall with a force of 80,000 N and comes to a stop. What was the impact time?
Answers
Rate of change of momentum = impact force (m*v-m*u)/t = F 4000*20/t = 80000 (note: v is zero as it stopped) soo, t = 1 sec
On the Celsius scale, one degree indicates the same temperature change as A. one degree Fahrenheit. B. 5/9 degree Fahrenheit. C. one kelvin. D. 9/5 kelvin.
Answers
Choice ' C ' is the only correct one.
The Celsius degree and the Kelvin are also the same size as 9/5 (1.8) Fahrenheit degrees.
D) 9/5 kelvin is WRONG
What is one way that fission and fusion are similar?
Answers
Well, they both start chain reactions and they are also both used in certain nuclear bombs. Also they are both natural processes that occur in the sun, where hydrogen fuses with helium atoms and then they split by the process of fission.
Which one of the following lenses is a converging lens
Answers
Hi There! :)
Which one of the following lenses is a converging lens