PHYSICS HIGH SCHOOL

5. Which of the following sets of conditions would result in the highest velocity for a sound wave traveling through air? A. A warm and humid day with a wind moving in the same direction as the sound
B. A warm and dry day with a wind moving in the opposite direction as the sound
C. A cold and dry day with a wind moving in the same direction as the sound
D. A cold and humid day with no wind

Answers

Answer 1
Answer: The answer is A. A warm and humid day with a wind moving in the same direction as the sound.

Sound waves travel through a medium such as solid, liquid, or gas. It travels faster when the molecules of its medium are closer together. This is the reason why it travels the slowest through dry air. When air is wet or humid, sound can travel faster because sound travels faster through water.

When sound waves pass through air, the most important factor that affects it is temperature. The higher the temperature, the faster the molecules vibrate. This allows sound waves to travel faster.
Answer 2
Answer:

The answer is A. A warm and humid day with a wind moving in the same direction as the sound. hope this helps!!!!

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White light is shining on a green grape. The grape _____.absorbs green light
reflects green light
reflects all colors of light except green
transmits green light

Answers

The grape absorbs all colors except green, and green light is the
only light that remains to bounce around and enter people's eyes. 

This is a big part of the reason why, whenever somebody looks at
the grape, they remark "Oh look !  The grape is green !"

Answer:

reflects green light.

Explanation:

the light that plants absorb to preform photosynthesis has a wavelength that peaks near 675nm. express this distance in (a) millimeters and (b) meters.

Answers

675 nM is  675 x 10⁻⁹ meter ...  0.000 000 675 meter .

That's   0.000 067 5  of one centimeter

             0.000 675      of one millimeter

a soap film is viewed in white light. if the film is much thinner than the wavelength of blue light, what is the appearance of the film?

Answers

When a soap film is viewed in white light and the film is much thinner than the wavelength of the blue light, the film will seem to be totally transparent. The thin film will reflect no visible light. It actually depends on the thickness of the film through which the light is being transmitted. I hope the answer helps you.

What did Ernest Rutherford expect to happen when he aimed a beam of particles at a thin gold foil?

Answers

When Ernest Rutherford aimed a beam of particles at a thin gold foil he expected that the particles would be deflected slightly after passing through the foil.

Further Explanation;

An atom  

  • An atom is the smallest particle of an element that takes part in a chemical reaction.
  • It is made up of a nucleus and energy levels.
  • Atoms contain sub atomic particles; electrons found in the energy levels, neutrons and protons found in the nucleus of the atom.
  • Electrons are negatively charged, protons are positively charged while neutrons have no charge.
  • The positive charge of protons gives nucleus a positive charge which attracts the opposite charged electrons.  

Rutherford Experiment

  • Rutherford carried out an experiment where he fired alpha particles at a piece of gold foil.
  • He found that about 1/800 of the alpha particles fired bounced back off of the gold foil.
  • He therefore, concluded that there was a part of the atom that was very dense, and that there was also lots of empty spaces.
  • According to Rutherford's model an atom contains a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus similar to the structure of the Solar system.

Shortcoming of Rutherford's model

  • Rutherford's model of the atom failed to explain why electrons were not pulled into the atomic nucleus by the attraction of opposite charges of the nucleus and electrons.

Keywords: Atom, Rutherford experiment, gold foil, nucleus of an atom, setbacks of Rutherford's model

Learn more about:

Level: High school  

Subject: Chemistry  

Topic: Structure of an atom and Atomic models

Sub-topic: Rutherford's and Bohr's model
The particles would be deflected slightly after passing through the foil

Which of the following best describes “the ability to do work”?a. force
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c. energy
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Answers


One very useful definition if energy is "the ability to do work".

Final answer:

The best description of the 'ability to do work' is 'energy'. This concept explains the capacity an object has to perform action and can be illustrated by different forms of energy like potential or kinetic.

Explanation:

The ability to do work is best described by c. energy. In physics, energy is the capacity to do work. Objects can hold this ability until it's converted into action, like lifting a box or lighting a bulb. This concept applies to various forms of energy such as potential energy, kinetic energy, and more. For example, a boulder at the top of a hill has potential energy due to its position, which can be converted into kinetic energy (work) as it rolls down.

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brainly.com/question/36891624

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Answers

its resultant is 100 newton
√(60 square+80 square)
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