What is the final step in the scientific method? 1. Conclusion 2. Analysis 3. Experiment 4. Observation

Which of the following is NOT NECESSARILY a property of an air mass?

lilavasa [31]

Answer:

a.

Explanation:

a

The property of air mass include

1) it must be large.

2) it must have relatively uniform properties.

3)it must travel as a recognizable entity.

It must have a warm front at its leading edge, is not necessarily a property of an air mass because Not all air masses have a warm front at their leading edge. There are five types of air masses and different types of the front can be developed.

4 0

4 years ago

Fe2(co3)3 number of atoms

Vera_Pavlovna [14]

Answer:

14 atoms

Explanation:

Number of atoms in Fe₂(CO₃)₃

An atom is the smallest indivisible particle that takes part in a chemical reaction.

In Fe₂(CO₃)₃; we have:

Elements Number of atoms

Fe 2

C 3

O 3(3) = 9

Total number of atoms = 2 + 3 + 9 = 14 atoms

7 0

3 years ago

What is the maximum number of lines per centimeter a diffraction grating can have and produce a complete first-order spectrum fo

Pachacha [2.7K]

Answer:

14,300 lines per cm

Explanation:

Answer:

14,300 cm per line

Explanation:

λ400 nm to 400nm

We can find the maximum number of lines per centimeter, which is reciprocal of the least distance separating two adjacent slits, using the following equation.

mλ = dsin (θ)

In this equation,

m is the order of diffraction.

λ is the wavelength of the incident light.

d is the distance separating the centers of the two slits.

θ is the angle at which the mth order would diffract.

To find the least separation that allows the observation of one complete order of spectrum of the visible region, we use the maximum wavelength of the visible region is 700 nm.

d = mλ / sin (θ)

As we want the distance d to be the smallest then sin (θ) must be the greatest, and the greatest value of the sin (θ) is 1. For that we also use the longest wavelength because using the smallest wavelength, the longest wavelength would not be diffracted.

d = mλ / sin (θ)

d = 1 x 700nm / 1

= 700 nm

So, the least separation that would allow for the possibility of observing complete first order of the visible region spectra is 700 nm, and knowing the least separation we can find the maximum number of lines per cm, which is the reciprocal of the number of lines per cm.

n = 1/d

= 1 / 700 x $10^{-9}$

= 1, 430,000 lines per m

= 14,300 lines per cm

The maximum number of lines per cm, that would allow for the observation of the complete first order visible spectra.

5 0

3 years ago

Networks of interconnected wireless devices that are embedded into the physical environment to provide measurements of many poin

bazaltina [42]

Wireless sensor networks

Explanation:

Networks of interconnected wireless devices that are embedded into the physical environment to provide measurements of many points over a large spaces are called Wireless sensor networks.

They are very useful in obtaining real-time data and information about every day life.

The internet of things greatly relies on the use of wireless sensor networks in devices and gadgets to better and improve life.
They are constantly in use by various organizations and bodies.
Wireless sensor networks can be designed to collect specific scientific data or even more.

learn more:

Connecting IoT devices brainly.com/question/11028028

#learnwithBrainly

6 0

4 years ago

A Carnot air conditioner takes energy from the thermal energy of a room at 63°F and transfers it as heat to the outdoors, which

vodomira [7]

Answer:

For the Carnot air conditioner working as a heat pump between 63 and 100°F , It would transfer 3.125 Joules of heat for each Joule of electric energy supplied.

Explanation:

The process described corresponds to a Carnot Heat Pump. A heat pump is a devices that moves heat from a low temperature source to a relative high temperature destination. To accomplish this it requires to supply external work.

For any heat pump, the coefficient of performance is a relationship between the heat that is moving to the work that is required to spend doing it.

For a Carnot Heat pump, its coefficient of performance is defined as:

$COP_{HP}=\frac{T_H}{T_H-T_L}$ Where:

T is the temperature of each heat deposit.

The subscript H refers to the high temperature sink(in this case the outdoors at 100°F)

The subscript L refers to the low temperature source (the room at 63°F)

Then, for this Carnot heat pump:

$COP_{HP}=\frac{T_H}{T_H-T_L}=\frac{100°F}{100°F-63°F}=3.125$

So for each 3.125 Joules of heat to moved is is required to supply 1 Joule of work.

3 0

3 years ago