2. I drop a ball from the 13.5 meter tall roof of this building. How much time will it take before it
hits the ground?

Option. (B) The crest of one wave overlaps with the trough of another  is the best description of the destructive interference of light. The statement Option (B) Radio waves have longer wavelengths and lower frequencies than microwaves correctly compares radio waves and microwaves. Exposure to Option (A) infrared radiant energy is sensed by human skin as warmth. prism produces the colors of the rainbow from white light Option (C) by separating the light of different wavelengths. Option(C) Light moves in a straight line except at surfaces between different transparent materials, where its path bends.

Question 2The best description of the destructive interference of light is when the crest of one wave overlaps with the trough of another wave.

Destructive interference occurs when two waves combine to form a wave of lower amplitude.

When this happens, the crest of one wave overlaps with the trough of another, reducing the overall amplitude of the wave.

Question 4Radio waves have longer wavelengths and lower frequencies than microwaves.

This implies that they also have lower energy and are less dangerous than microwaves.

Microwaves have shorter wavelengths, higher frequencies, and higher energy than radio waves.

Question 6Exposure to infrared radiant energy is sensed by human skin as warmth.

This is because the infrared wavelengths correspond to thermal energy, which means that they cause molecules to vibrate faster and generate heat when absorbed by objects.

The sun is a source of infrared radiation that is sensed by our skin as warmth.

Question 8A prism produces the colors of the rainbow from white light by separating the light of different wavelengths.

When white light enters a prism, it is refracted and separated into its component colors because each color has a different wavelength.

This is because each color bends differently as it passes through the prism, which causes them to separate and form a rainbow of colors.

Question 10Light moves in a straight line except at surfaces between different transparent materials, where its path bends.

This bending of light is known as refraction and occurs because light travels at different speeds through different materials.

When light moves from one material to another, such as from air to glass, it changes speed and direction, causing its path to bend.

This is why lenses and prisms can be used to bend and focus light in specific ways.

For more questions on prism

https://brainly.com/question/23284997

#SPJ8

ANSWER:

85.0 kg

STEP-BY-STEP EXPLANATION:

We have that the more mass the more it weighs. The weight of a body is not the same on Earth as it is on the Moon because the Moon is smaller than the Earth and has less mass and the force with which it attracts bodies is less (that is, the acceleration of gravity is different). But despite this the mass of the body does not vary even if we are in different places such as the Earth or the Moon.

Therefore, the mass would be the same, 85.0 kg

In a DC generator, the generated electromotive force (emf) is directly proportional to the rotational speed of the generator's armature and the strength of the magnetic field within the generator.

This relationship is described by the equation for the generated emf in a DC generator:

Emf = Φ * N * A * Z / 60

Where:

Emf is the generated electromotive force (in volts),

Φ is the magnetic flux density (in Weber/meter^2\(meter^2\) or Tesla),

N is the number of turns in the armature winding,

A is the effective area of the armature coil (in square meters),

Z is the total number of armature conductors, and

60 is a constant representing the conversion from seconds to minutes.

From this equation, we can see that the generated emf is directly proportional to the magnetic flux density (Φ) and the product of the number of turns (N), effective area (A), and the total number of armature conductors (Z). This means that increasing any of these factors will result in a higher generated emf.

The magnetic flux density (Φ) can be increased by using stronger permanent magnets or increasing the strength of the field windings in the generator.

The number of turns (N) and the effective area (A) are design parameters and can be optimized for a specific generator. Increasing the number of turns or the effective area will result in a higher generated emf.

Similarly, the total number of armature conductors (Z) can be increased to enhance the generated emf.

By controlling and optimizing these factors, the generated emf in a DC generator can be increased, resulting in higher electrical output. However, it is important to note that there are practical limits to these factors based on the design and construction of the generator.

For more such information on: DC generator

https://brainly.com/question/23037391

#SPJ8

Organelles are specialized structures within cells that perform specific functions, such as energy production, protein synthesis, and waste removal.

Some examples of organelles include mitochondria, which produce energy for the cell, and ribosomes, which are involved in protein synthesis.

The size of cells can vary widely depending on the organism and the type of cell. For example, human cells can range from 10 to 30 micrometers in diameter, while bacterial cells are typically much smaller, ranging from 1 to 5 micrometers in diameter.

In summary, organelles are specialized structures within cells that perform specific functions, and the size of cells can vary widely depending on the organism and the type of cell.

To know more about organelles, visit:

https://brainly.com/question/2135497

#SPJ1

Expand the given expression into partial fractions.

\(\dfrac1{z^2 - 3z + 2} = \dfrac1{(z-2)(z-1)} = \dfrac1{(2 - z) (1 - z)} = \dfrac1{1 - z} - \dfrac1{2 - z}\)

Recall the infinite geometric series,

\(\displaystyle \sum_{n=0}^\infty z^n = \dfrac1{1-z}\)

which converges in the unit disk |z| < 1.

The unit disk is a subset of the given region |z| < 2, so there are no issues with the convergence of series expansion of the first expression. For the second expression, we rearrange terms as

\(\dfrac1{2 - z} = \dfrac12 \times \dfrac1{1 - \frac z2}\)

Then if |z/2| < 1, or equivalently |z| < 2, the series expansion for this term is

\(\displaystyle \frac1{2-z} = \frac12 \sum_{n=0}^\infty \left(\frac z2\right)^n = \sum_{n=0}^\infty \frac{z^n}{2^{n+1}}\)

Putting everything together, the series expansion of the given expression over |z| < 2 is

\(\displaystyle \frac1{z^2-3z+2} = \sum_{n=0}^\infty \left(1 + \frac1{2^{n+1}}\right) z^n\)

Water from one side will migrate to the other side via a process known as capillary siphoning when the height of the impervious core of the earth dam is lower than that of the capillary rise.

The flying-droplet syphon prevents liquid tensile strength from pushing liquid up by separating the stream of liquid into individual droplets inside of a sealed air-filled chamber. This is done by preventing the liquid going up from coming into touch with the liquid going down.

An unseen force known as capillarity opposes the gravitational pull. In a tube or a small pipe, it forces a liquid upward. This ascending of liquid is the capillary action.

To learn more about capillary action visit:

brainly.com/question/13228277

#SPJ1

Answer:

Normalization is a systematic approach of decomposing tables to eliminate data redundancy. It is a multi-step process that puts data into tabular form, removing duplicated data from the relation tables.

Explanation:

Answer:

the process of bringing or returning something to a normal condition or state.

Explanation:

In "your own words"- Normalization is when you change something back into it's average form.

Explanation:

Given : L=2 m A=0.0225mm

2

=0.0225×10

−6

m

3

F=100 N

Stress =

A

F

=

0.0225×10

−6

100

=4.4×10

9

N/m

2

Energy stored U=

2

1

×

Y

(stress)

2

×AL

Or U=

2

1

×

20×10

10

(4.4×10

9

)

2

×(0.0225×10

−6

)(2)=2.222 J

Expressed in vector form, the final displacement from where the cyclist started is Δr = 3.0 km east + 6.38 km north.

Displacement is a vector quantity that represents the change in position of an object. It is the straight-line distance and direction between the initial position of an object and its final position.

To solve the problem, we can break down the motion of the cyclist into two components: one in the x-direction (east-west) and one in the y-direction (north-south).

In the x-direction, the cyclist rides 4.0 km west and then 7.0 km east, for a net displacement of 7.0 km - 4.0 km = 3.0 km to the east. In the y-direction, the cyclist rides 11.0 km at an angle of 35° west of north, which means that the component of this distance in the y-direction is 11.0 km * sin(35°) = 6.38 km to the north.

Therefore, the final displacement from where the cyclist started is the vector sum of these two components: Δr = (3.0 km, 6.38 km)

Learn more about displacement here:

https://brainly.com/question/30087445

#SPJ1

Answer:

30 000 J/Nm

Explanation:

60 x 10 x 50

=600 x 50

=30000 J/Nm

The change in gravitational potential energy of the student is 18000 Joule.

The energy that an item has or acquires when its location changes as a result of being in a gravitational field is known as gravitational potential energy. Gravitational potential energy can be defined as an energy that has a connection to gravitational force or gravity.

Given parameters:

Mass of the student: m = 60 kg.

Weighs of the student: W = 600 N.

the student falls h =50 m.

Hence, change in gravitational potential energy of the student =

Weighs of the student × change in height

= 600 N × 30 m

= 18000 Joule.

So, the change in gravitational potential energy of the student is 18000 Joule.

Learn more about potential energy here:

https://brainly.com/question/24284560

#SPJ2

The frequency of a wave is related to its velocity and wavelength by:

In this case the velocity is 343 m/s and the wavelength is 3.93 mm, then we have:

Therefore, the frequency is 87277.35 Hz

Answer:

Its A

Explanation:

I already answered that question

Answer:

15

Explanation:

Answer:

Mass.

Explanation:

I took the quiz and got the answer right

To calculate the acceleration of an object moving in a straight line, divide the change in velocity by the time during which the acceleration occurs.

The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.

To calculate acceleration, you need to divide the change in velocity (delta v) by the change in time (delta t) during which the acceleration occurs. The formula for acceleration is a = Δ v / Δ t.

Find out more on acceleration at https://brainly.com/question/460763

#SPJ1

The star of a cross-country team is Ken Runfast. Ken recently ran for 12.4 minutes at an average speed of 5 m/s. After then, Ken's average speed was 6.1.

Distance is the overall movement of an item with consideration of direction. Regardless of an object's starting or ending position, distance can be defined as the amount of ground it has covered.

We can determine an object's actual size by learning how far away it is. The area an object occupies in the sky can be measured. The distance from it must then be determined in order to determine its true size. An thing appears smaller the further it is away.

To know more about average speed visit:

https://brainly.com/question/12322912

#SPJ1

Answer:

heat given , nature of body, and temperature rise

The time that would be taken is 1.6 s.

We know that the speed would be the ratio of the distance to the time that have been taken and that is how we would be able to solve the problem that we have in the case that is ahead of us in this question

We have that the speed is; Distance/Time

= 91 m/29s

= 3.1 m/s

At the same speed;

Time = Distance/Speed

= 5 m / 3.1 m/s

= 1.6 s

Hence we k now that the spaghetti would be able to take a time that is about 1.6 s

Learn more about speed:https://brainly.com/question/28224010

#SPJ1

Answer:

A) P_rad.abs = 2.4 × 10^(-8) Pa and P_rad.ref = 4.8 × 10^(-8) Pa

B) P_rad.abs = 2.369 × 10^(-13) atm and P_rad.ref = 4.738 × 10^(-13) atm

Explanation:

A) The formula for radiation pressure for absorbed light is given as;

P_rad = I/c

Where I is the intensity = 7.20 W/m² and c is the speed of light = 3 × 10^(8) m/s

Thus;

P_rad = 7.2/(3 × 10^(8))

P_rad.abs = 2.4 × 10^(-8) Pa

Now formula for radiation pressure for reflected light is given as;

P_rad = 2I/c

Thus;

P_rad = (2 × 7.2)/(3 × 10^(8))

P_rad.ref = 4.8 × 10^(-8) Pa

B) Now, 1.013 × 10^(5) Pa = 1 atm

Thus, for the absorbed surface, we have;

P_rad.abs = (2.4 × 10^(-8))/(1.013 × 10^(5))

P_rad.abs = 2.369 × 10^(-13) atm

For the reflecting surface, we have;

P_rad_ref = (4.8 × 10^(-8))/(1.013 × 10^(5))

P_rad.ref = 4.738 × 10^(-13) atm

Explanation:

a boy walks at 2m/s for 30sec and run at 5m/s for 20sec. what is his average speed

An electric iron is marked 120 volts and 500 Watts. The units consumed by it in using it for 24 hours can be calculated using the formula:Power (in watts) = Voltage (in volts) x Current (in amperes)P = V x I

For such more question on Voltage

https://brainly.com/question/14883923

#SPJ8

Answer: Similarity

By.

The way in which one atom interacts with another atom is mostly influenced by the configuration of the electrons farthest from the nucleus.

Option A.

An atom can be defined as the smallest part of a substance that cannot be broken down chemically. Each atom has a nucleus (center) made up of protons (positive particles) and neutrons (particles with no charge).

The arrangement of electrons in orbitals and shells around the nucleus is referred to as the electronic configuration of the atom.

Thus, we can conclude that the way in which one atom interacts with another atom is mostly influenced by the configuration of the electrons farthest from the nucleus.

The remaining options do not fit the empty space properly, and they include;

Learn more about electron configuration here: https://brainly.com/question/26084288

#SPJ1

According to the question Solar energy is the most reliable and sustainable option for supplementing the current power grid in Las Vegas by 2030.

Power is the ability to influence or control the behavior of people, events, and outcomes. It is an essential element of life, as it is needed to make decisions, shape the environment, and establish order. Power can be wielded by individuals, organizations, and societies. It is often used to gain an advantage or to achieve a desired outcome. Power can either be coercive or consensual, depending on the situation and the parties involved. Coercive power is used to force others to do something, while consensual power is used to gain agreement and cooperation. Power can lead to positive outcomes, such as cooperation and collaboration, but it can also be misused or abused.

To learn more about power

https://brainly.com/question/1634438

#SPJ1

Given,

The charge passed through the filament, q=1.0×10⁵ C

The time duration, t=2.5 hrs

To convert the time duration from hours to seconds,

The electric current is the time rate at which the electric charges flow.

Thus the current produced is given by,

On substituting the known values,

Thus, the current produced is 11.11 A

When the overcurrent protection for a conductor is located on the load end rather than the supply side of a conductor it is considered to be a tap conductor.

The National Electrical Code (NEC), the benchmark for safe electrical design, installation, and inspection to protect people and property from electrical hazards, defines a tap conductor as a conductor, other than a service conductor, that has overcurrent protection rated more than the ampacity of a conductor. A tap conductor has overcurrent protection ahead of its point of supply that exceeds the value permitted for similar conductors that are protected as described in NEC 240.4. Hence, when the overcurrent protection for a conductor is located on the load end rather than the supply side of a conductor it is considered to be a tap conductor.

Learn more about Tap conductor:

https://brainly.com/question/14744748

#SPJ4

Answer: Hope this helps ;) don't forget to rate this answer !

Explanation:

There are two correct answers:

A) A corporation leader makes direct payment to the candidate.

D) A corporation contributes to a Super PAC that a PAC accepts contributions for a candidate.

Option A describes a scenario where a corporation directly donates money to a presidential candidate, which is allowed as long as it is done within the limits set by campaign finance laws.

Option D describes a scenario where a corporation donates money to a Super PAC, which is a type of political action committee that can accept unlimited donations from individuals, corporations, and other organizations. The Super PAC can then use the money to support or oppose a particular candidate, but it is not allowed to coordinate directly with the candidate or the candidate's campaign.

I hope this helps! Let me know if you have any other questions.

The energy transferred in Joules by the radio when it has been switched on for 2 minutes would be 6000 Joules.

Power is defined as the rate of energy transfer or the rate at which work is done, and is given by the equation:

Power = Energy transferred / Time

Rearranging the equation to solve for energy transferred, we get:

Energy transferred = Power x Time

We are given:

Power = 50 W

Time = 2 minutes = 120 seconds

Therefore, the energy transferred by the radio when it has been switched on for 2 minutes is:

Energy transferred = Power x Time = 50 W x 120 s = 6000 J

In other words, the energy transferred by the radio is 6000 Joules.

More on energy transfer can be found here: https://brainly.com/question/18649915

#SPJ1

Answer:

~4%

Explanation:

% = |(7.6 - 7.9)|/7.9

= 0.3/7.9 ≈ 0.04 = 4%