1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrej [43]
3 years ago
10

If, while standing on the bank of a stream, you wished to spear a fish swimming in the water out in front of you, would you aim

above, below, or directly at the observed fish to make a direct hit? If you decided to instead zap the fish with a laser, would you aim above, below, or directly at the observed fish? Defend your answers.
Physics
1 answer:
Serggg [28]3 years ago
3 0

Answer:

<em>a) below the observed position</em>

<em>b) directly at the observed position</em>

<em></em>

Explanation:

If I'm standing on the bank of a stream, and I wish to spear a fish swimming in the water out in front of me, I would aim below the observed fish to make a direct hit. This is because the phenomenon of refraction of light in water causes the light coming from the fish is refract away from the normal as it passes  into the air and into my eyes.

If I'm to zap the fish with a taser, I would aim directly at the observed fish because the laser (a form of concentrated light waves) will refract into the water, taking the same path the light from the fish took to get to my eyes.

You might be interested in
8. Contrast. The energy that can be released during a nuclear fission reaction with the energy that can be released during a nuc
Cloud [144]
8) the energy released by fusion is generally 3 to 4 times larger than with fission.  Fission has very few by-products but fusion releases large amounts of radioactive particles because it starts with large nuclei.
9) Alpha particles are 2 protons and 2 neutrons all put together.  It's really the nucleus of a helium atom.  It is most dangerous if you ingest it but it can be stopped with a sheet of paper so outside the body it's not as dangerous as others and due to its size it can't get very far in the air before hitting air molecules
beta particles are high energy electrons or positrons.  They travel further due to their small size but can be stopped by a thin barrier of plastic or wood.
Gamma rays are high frequency photons (light)  They are stopped by metal plates and go through human tissue.  They are quite dangerous.
10) The mass that is lost in chemical reactions is very small. Solve E=mc² for mass and you get m=E/c².  This says the mass you lose is equal to the energy you gained divided by the speed of light squared.  c² is a VERY big number so you need a lot of energy produced to notice it.  Chemical reactions are simply too inefficient to get that much energy out.
11)You need high temperatures for fusion because you're trying to push two atoms together (to "fuse" them as the name suggests)  The electrons in one atom repel the other electrons in the other atoms.  When stripped down to only protons, you still have to overcome this repulsion (Coulomb repulsion).  High temperatures means high velocity of the particles in the plasma.  This gives them enough "oomph" to get close enough to fuse.  Once close enough to each other, the nuclear force takes over and overwhelms the Coulomb repulsion and the nuclei fuse and release energy in doing so.
7 0
3 years ago
If a car travels 40 km/hr for hours how far has it traveled
Rainbow [258]
It depends on how many hours!
1 hour = 40km
2 hours = 80km
8 0
3 years ago
PLEASE ANSWER ASAP, WILL MARK BRAINLIEST***
Andreyy89
The answer is to your question is c
7 0
2 years ago
PLEASE HELP. NOTICE HOW THEY PUT FUTURE
MrMuchimi

I think its <u>B</u> because it looks like it might indicate a future rain storm.

6 0
3 years ago
What is the net electrical charge on a magnesium ion that is formed when a neutral magnesium atom loses two electrons?
Arisa [49]
-3.2x10^-19C is formed 
4 0
3 years ago
Read 2 more answers
Other questions:
  • the gravitational force that earth exerts on the moon equals 2.03 x 10^20N. The moons mass is 7.35 x 10^22kg. What is the accele
    11·1 answer
  • An isolated system consists of a 1.5 kg mass moving in the presence of the following potential energy function: U open parenthes
    8·1 answer
  • The table below shows two types of electromagnetic waves and three random applications of electromagnetic waves.
    14·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
    14·1 answer
  • An airplane wing is designed to make the air move
    8·1 answer
  • A tornado passes in front of a building, causing the pressure to drop there by 25% in 1 second. Part A If a door on the side of
    8·1 answer
  • A car traveling at 37m/s starts to decelerate steadily. It comes to a complete stop in 15 seconds. What is it’s acceleration
    15·1 answer
  • In the example given below, Aaron applies a force of 300N and Bob applies a force of 450N :
    9·1 answer
  • Which statement is correct about waves?
    14·1 answer
  • An object with smaller mass and an object with a larger mass have the same kinetic energy. Which object has the higher momentum?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!