What are the two systems of measurement

Answers

Answer 1

Answer: The Metric, and the US Standard systems. :)

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consider the phrase, " the quick brown fox jumped over the lazy dog." which details of this situation would a physicist who is modeling the path of a fox ignore?

Answers

The physicistmodelling the path of the fox will ignore the colour of the fox and the strength of both animals.

The given phrase:

"the quick brown fox jumped over the lazy dog."

To find:

the detail of the of the given statement which will be ignored by a physicist modelling the path of the fox.

The path of a motion is determined by:

time of motion

direction of motion

speed of motion,
the motion's trajectory, etc

The physicist will ignore the following details in the givenphrase:

the colour (brown)of the for: this is irrelevant to the motion of the fox
the strength(lazy) of both fox and dog

Thus, the physicist modelling the path of the fox will ignore the colour of the fox and the strength of both animals.

Learn more here: brainly.com/question/14305205

Answer:

Air resistance.

Explanation:

In this scenario the fox is jumped over the lazy dog then the trajectory of the fox will be parabolic. The physicist solve this problem by the help of projectile motion by taking vertical and horizontal component to solve this by using newton equation of motion.

But he should neglect or ignore the air resistance because the addition of air resistance will make the path more difficult and the problem will become tougher to apply newton equation to find the value up to more precision.

When an object is at a distance of twice the focal length from a concave lens, the image produced is virtual and smaller than the object. What happens to the image if the object is shifted closer to the lens to a point one focal length away from it?The image produced is virtual and enlarged.
The image produced is virtual and smaller than the object.
The image produced is real and enlarged.
The image produced is real and smaller than the object.
The image produced is virtual and of the same size as the object.

Answers

Answer:

The image produced is virtual and smaller than the object.

Explanation:

For concave lens we know that

$(1)/(d_i) + (1)/(d_o) = (1)/(f)$

here we have

$(1)/(d_i) + (1)/(2f) = -(1)/(f)$

$(1)/(d_i) = - (3)/(2f)$

$d_i = -(2f)/(3)$

Magnification will be given as

$M = (d_i)/(d_o)$

$M = -2/3$

so image will be virtual and formed behind the lens

Now the object position is shifted to new position at distance of focal length

now again we will have

here we have

$(1)/(d_i) + (1)/(f) = -(1)/(f)$

$(1)/(d_i) = - (2)/(f)$

$d_i = -(f)/(2)$

Magnification will be given as

$M = (d_i)/(d_o)$

$M = -1/2$

So again we will have virtual image with magnification 1/2

so here size of image is less than object size by factor of 1/2 and it is virtual

The right answer for the question that is being asked and shown above is that: "The image produced is virtual and of the same size as the object." the image if the object is shifted closer to the lens to a point one focal length away from it is that The image produced is virtual and of the same size as the object.

Which statement is true about the energy of electromagnetic radiation? A.the frequency of the emmited radiation is inversely proportional to its energy. B.the frequency of the emitted radiation is directly proportional to its energy C.the wavelength of the emitted radiation is directly proportional to its energy. D.the amplitude of the emitted radiation is inversely proportional to its energy.

Answers

The frequency of the emitted radiation is directly proportional to its energy

Answer: Option (B) is the correct answer.

Explanation:

The radiation in which waves of electromagnetic field travel or propagate through the space and carries electromagnetic radient energy is known as electromagnetic radiation.

The relation between energy and frequency is as follows.

$E = h \nu$ ............ (1)

where, E = energy

h = plank's constant

$\nu$ = frequency

Therefore, the frequency of the emitted radiation is directly proportional to its energy.

Also, frequency is proportional to c over wavelength. The relation is as follows.

$\nu = (c)/(\lambda)$ ........ (2)

where, $\nu$ = frequency

c = speed of light

$\lambda$ = wavelength

Placing the value of frequency from equation (2) to equation (1) as follows.

$E = (hc)/(\lambda)$

Thus, the wavelength of the emitted radiation is inversely proportional to its energy.

What is the French word for shepherds crook

Answers

The answer would be:

Houlette de berger.

"shepherd's crook" means "houlette de berger" in french

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct? -Brody is correct because the wave involves an input of energy. -Ethel is correct because energy is not carried from one place to another. -Brody is correct because the pattern repeats. -Ethel is correct because the motion has no pattern. Also... Khalad is measuring the amplitude of a wave. What can be known about this wave? -It is a sound wave. -It is a transverse wave. -It is an electromagnetic wave. -It is a mechanical wave.

Answers

In the first question, the answer would be the statement 'Brody is correct because the wave involves an input of energy'. The hand wave involves an input of energy and this energy is repeated and is carried from one place to another.

For the next question, the answer would be 'it is a transverse wave' because all are transverse waves.

Answer:

Ethel is correct because energy is not carried from one place to another.

It is a transverse wave.

Explanation:

During the propagation of waves from one point or place to another, energy is being transferred. Thus, when one's hand is being waved, there is no transfer of energy from one point to another. Therefore, Ethel is right while Brody is wrong.

A transverse wave is known as a type of wave that the direction of propagation is perpendicular to the vibration of the medium. Therefore, the wave is a transverse wave.

What happens in a chemical reaction?

Answers

When two or more molecules interact and the molecules change. Bonds between atoms are broken down and created to form new molecules.

As the chemical bonds are broken, the positions of electrons change, resulting in a product with properties that are different from the properties of the reactants. Various temperatures and catalysts are needed for different chemical reactions to occur. During a chemical reaction, new substances are produced as existing bonds are broken, atoms are rearranged, and new bonds are formed.

Other Questions

When a sound source is moving toward the observer, the observer will hear a higher pitch. This is due toa. a decrease in the amplitude of the sound wave. b. a decrease in the frequency of the sound wave. c. an increase in the frequency of the sound wave. d. an increase in the amplitude of the sound wave.

If a device uses 280 watts of power a day, about how many kilowatt-hours will it use in 30 days?

To dry the brakes, drive slowly in __________ and apply light pressure on your brake pedal.

Which equation describes the sum of the two vectors plotted below?