PHYSICS HIGH SCHOOL

Which one of the following sources produces the highest energy photons? A)a doctor's x-ray source B)a heat lamp in a restaurant C)a microwave oven D) gamma rays from a star radio E)waves from a local station

Answers

Answer 1
Answer:

Answer:D) Gamma rays

Explanation:

Energy of a photon= h( Planck constant) * f (frequency)

So we take a look at the electromagnetic spectrum i am attaching and see which wave will have the highest frequency.  

As a note frequency is inversely proportional to wavelength so highest energy is also shortest wavelength.  

Therefore the highest energy are gamma rays

Hope this helps
Answer 2
Answer:

Final answer:

Among the options provided, gamma rays from a star radio produce the highest energy photons. This is due to the larger energy differences in gamma rays. The radiation emitted by a microwave oven, a heat lamp, local station waves, or a doctor's X-ray are of lesser energy comparatively.

Explanation:

The source that produces the highest energy photons among the options provided is 'gamma rays from a star radio'. This is because gamma rays are part of the electromagnetic spectrum and known for having short wavelengths and high energy. In fact, the energy of gamma rays is much larger than the energy released by a microwave oven, a heat lamp, radio waves from a local station or even a doctor's X-ray machine.

Nuclear energy shells in gamma rays have energy differences that are millions of times larger than electromagnetic radiation from electronic transitions. In contrast, examples like a microwave oven work with much smaller energy scales, producing electromagnetic radiation that is absorbed by water molecules, leading to an increase in the molecules' rotational energies.

Microwaves and heat lamps emit infrared radiation, doctors use X-rays, and local stations emit radio waves. However, none of these have as much energy as gamma rays, which can be produced in stars, among other places. Gamma rays are the most energetic form of light and are created by the hottest and most energetic objects in the universe, such as stars and black holes.

Learn more about Gamma Rays here:

brainly.com/question/12528914

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Which of these diagrams best represents the steps in the formation of planets? A) The sun is born > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born B) The clouds flatten into a disc > The sun is born > The clouds condense > the planets are born C) The clouds of dust and gases rotate at high speed > The clouds condense > The sun is born > The planets are born D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born
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How did Thomson know atoms had an overall neutral charge?He knew there were negative electrons but he came to the conclusion that the rest of the atom was positively charged, why was this? How did he know it would be positively charged?

Answers

He reasoned that there must be a source of positive charge within the atom to counterbalance the negative charge on the electrons.

What is a time interval?

Answers


"Time" has no beginning, no end, and no definite length.

An interval is a piece cut out of time.
It has a beginning, an end, and a definite length.

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As a 5.0 x 10^2 newton basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floor is 1.0 x 10^3 newtons. As she jumps, the magnitude of the force of the floor on her feet is1) 5.0 x 10^2 N
2) 1.0 x 10^3 N
3) 1.5 x 10^3 N
4) 5.0 x 10^5 N

Answers

Answer:

2) 1.0 x 10^3 N

Explanation:

As a 5.0 x 10^2 newton basketball player jumps from the floor up toward the basket, the magnitude of the force of her feet on the floor is 1.0 x 10^3 newtons. As she jumps, the magnitude of the force of the floor on her feet is

1) 5.0 x 10^2 N

2) 1.0 x 10^3 N

3) 1.5 x 10^3 N

4) 5.0 x 10^5 N

The answer is B , because from newton's third law of motion which states that action and reaction are equal and opposite.

so the reaction of the floor on her leg will be equal to the the magnitude of her feet on the floor, this will hold if the floor does not collapse.
I believe the answer is (4) The reason that is, is because if the exponents are the same like 10^2 and 10^3, you can add them. Then you would get 10^5. You can go ahead though and multiply 5.0 and 1.0. Now remember that with decimals you don't need the zeros behind the decimal point. So that simplifies it with just 5 x 1. Leaving you with 5.0 x 10^5. 

A ball is thrown horizontally from the top ofa building 140 m high. The ball strikes the
ground 54 m horizontally from the point of
release.
What is the speed of the ball just before it
strikes the ground?
Answer in units of m/s.

Answers

Answer:

v = d / t = 54 / 5.34 = 10.11 m/s (rounded to two decimal places)

Explanation:

Part C Next, you’ll test the hardness of each rock by scratching it with different substances as shown in the chart. The values in the chart are based on the Mohs Scale of hardness, which ranks the hardness of rocks and minerals on a scale of 1 to 10. First try to scratch a rock with your fingernail. If you can make a mark on the rock with your fingernail, record the related hardness value from the chart in your table. If a fingernail doesn’t scratch the rock, try to scratch it with the copper penny. If the penny doesn’t scratch the rock, try the wire nail and finally the masonry nail. Enter a hardness value for each rock.

Answers

Answer + Explanation:

To determine the hardness value of each rock, you need to follow the instructions provided and test the rocks with different substances. Here is a step-by-step guide:

1. Start by scratching the rock with your fingernail. If your fingernail can make a mark on the rock, record the related hardness value from the chart in your table. For example, if your fingernail scratches the rock and the corresponding hardness value in the chart is 2, you would record 2 in your table.

2. If your fingernail doesn't scratch the rock, move on to the next substance, which is a copper penny. Try scratching the rock with the copper penny. If the penny doesn't scratch the rock, move on to the next substance.

3. The next substance to try is a wire nail. Scratch the rock with the wire nail. If the wire nail doesn't scratch the rock, proceed to the last substance.

4. The last substance to try is a masonry nail. Scratch the rock with the masonry nail. If the masonry nail doesn't scratch the rock, record the highest value from the chart in your table.

By following these steps and recording the highest hardness value achieved through the scratching test with each substance, you will be able to determine the hardness value of each rock.

hope this helps

A force is applied to a block, causing it to accelerate along a horizontal, frictionless surface. The kinetic energy gained by the block is equal to which of the following​

Answers

Answer:

The work done to the block

See

Workdone is Force×Displacement .

Also work done is total mechanical energy of body

  • As potential energy is 0

Mechanical energy=Kinetic energy

So option C is correct
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