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16. Which statement is true regarding the process-control relay ladder diagram shown in the figure?
O A. With the temperature switch closed, the motor will start once the push button is pressed.
B. Only the temperature switch has to close for the motor to start.
C. With the pressure switch closed and the push button released, the motor will start.
D. The pressure switch, temperature switch, and push button must be closed for the motor to start.

The orders of wavelengths of visible light from highest to lowest frequency are:

Wavelength is the distance between two consecutive points of a wave that are in phase with each other, meaning they are at the same position in their cycle. In other words, it is the distance between two successive peaks or troughs of a wave.

Wavelength is usually denoted by the Greek letter lambda (λ) and is measured in units of length such as meters, centimeters, or nanometers.

Note that the wavelength range for each color can vary depending on the source, but the general order of frequencies remains the same.

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Answer:

a)= 3 sf

b)= 4sf

c)= 6sf

d)= 5sf

The following affect how can see an object is removing, blocking, or changing the light source. so, option (a) is correct.

What is light?

The electromagnetic radiation known as light is what enables the human eye to see and makes things visible. It can also be described as radiation that can be seen by humans. Light is made up of small energy packets called photons. Light moves in a straight line at all times.

What is light source?

An artificial or natural light source is anything that produces light. The Sun and stars are examples of natural light sources. Televisions and lampposts are examples of artificial lighting sources. Without light sources, we wouldn't be able to view the world around us, yet not all things we can see are light sources.

Therefore, following affect how can see an object is removing, blocking, or changing the light source. so, option (a) is correct.

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Answer:

d) 14.1 m

e) 8.57 m/s

Explanation:

(a) There are three forces on the ball:

Normal force Fn pushing up,

Weight force Fg pulling down,

Kinetic friction Fk pushing left (resisting motion).

FBD is the correct free body diagram.

(b) Sum of forces in the y direction:

∑F = ma

Fn − Fg = 0

Fn = Fg

Sum of forces in the x direction:

∑F = ma

-Fk = ma

-Fn μk = ma

-mg μk = ma

a = -g μk

a = -(10 m/s²) (0.25)

a = -2.5 m/s²

(c) Sum of torques about the ball's center:

∑τ = Iα

Fk r = ⅖ mr² α

mg μk r = ⅖ mr² α

g μk = ⅖ r α

α = 5g μk / (2r)

α = 5 (10 m/s²) (0.25) / (2 × 0.2 m)

α = 31.25 rad/s²

(d) The velocity and angular velocity at time t is:

v = at + v₀

v = -2.5t + 12.0

ω = αt + ω₀

ω = 31.25t + 0

When the ball begins to roll without slipping, v = ωr.

-2.5t + 12.0 = (31.25t) (0.2)

-2.5t + 12.0 = 6.25t

12.0 = 8.75t

t = 1.37

The distance the ball moves is:

Δx = v₀ t + ½ at²

Δx = (12) (1.37) + ½ (-2.5) (1.37)²

Δx = 14.1 m

(e) v = at + v₀

v = (-2.5 m/s²) (1.37 s) + 12.0 m/s

v = 8.57 m/s

Answer:

a

Explanation:

on egde 2020

Answer:

The magnitude of the normal force: 75.1 N

Explanation:

The free-body diagram showing all forces acting on the box is:

Here is a little explanation of the diagram. What we are doing is we are refinding our coordinate system such that the y axis is along the normal force Fn and the x-axis is along with the tangential force Ft. Remember that in this coordinate system, we have to decompose the gravitation force Fg into normal and tangential components.

Now the Normal force acting on the box is Fn. What is its magnitude? We can easily find it using some trigonometry.

which evaluates to give

Hence, the normal force on the box is 75.1 newtons.

Given

Rope at second harmoic frequency is 8hz

Procedure

The fundamental vibrational mode of a stretched string is such that the wavelength is twice the length of the string.

f1 = Fundamental frequency

f2 = 2f1

f1 = f2/2

f1 = 8 Hz/2

f1 = 4 Hz

Now, for the fifth harmonic

f5 = 32f1

f5 = 32*4

f5 = 128 Hz

The fifth harmonic would be 128 hz

In this lab, you observed how different factors such as velocity, gradient, and , or amount of water in a stream, affect the rate of , the transport of materials from one area to another by water.

Volume, Erosion

How did changing from a light drizzle to a downpour affect the river and the sediment in it? Check all that apply.

3.The velocity of the river increased.

4.There was more erosion in the stream.

5.The type of sediment that moved changed.

Answer:

As you travel up through the Earth's atmosphere, the composition of gases changes. Near the Earth's surface, the atmosphere consists mainly of nitrogen (about 78%) and oxygen (about 21%) with traces of other gases like carbon dioxide and argon. As you go higher, the amount of oxygen decreases, and the concentration of other gases becomes more prominent, such as helium, hydrogen, and ozone.

Answer: 500 KM per hour

Explanation:

Answer:

Fastening-run & High-Jumping

This question is incomplete, the complete question is;

A carpenter builds a solid wood door with dimensions 1.95 m × 0.99 m × 4.5 cm . Its thermal conductivity is k=0.120W/(m.K). The air films on the inner and outer surfaces of the door have the same combined thermal resistance as an additional 1.6 cm thickness of solid wood. The inside air temperature is 19.0°C , and the outside air temperature is -6.50°C .

a) What is the rate of heat flow through the door?

b) By what factor is the heat flow increased if a window 0.550 m on a side is inserted in the door? The glass is 0.450 cm , and the glass has a thermal conductivity of 0.80 W/(m.K). The air films on the two sides of the glass have a total thermal resistance that is the same as an additional 12.0 cm of glass.

Answer:

a) the rate of heat flow through the door is 97 watts

b) The factor of increased heat flow is 1.353

Explanation:

Given that;

room dimension = 1.95m × 0.99m × 4.5cm,

thermal conductivity = 0.120 w/m.k

additional thickness of solid wood Δt = 1.6 cm

a)

first we determine the effective thickness of the door;

t = 4.5cm + 1.6 cm = 61 cm ≈ 0.061 m

Now rate of heat flow is given by the relation

Q = KA( (TH -TC)/L)

= 0.12 × (1.95 m × 0.99 m) × ( (19°C - (-6.50°C)) / 0.061m)

= 0.23166 × 418.0327

= 96.8414 watts

Q = 97 watts

therefore the rate of heat flow through the door is 97 watts

b)

by intensity the glass of thickness 0.450 cm

the effective thickness is

L = 0.45cm + 12 cm = 12.45 cm = 0.1245 m

additionally area of glass A = (0.550 m)²

A = 0.3025 m²

Now

Qglass = KA ((TH-TC)/L)  

= 0.80 w/m.k × 0.3025 m² × (19°C - (-6.50°C)) / 0.1245m)

= 0.242 × 204.819

Qglass = 49.57 watt  

Qwood = KA ((TH-TC)/L)  

area of wooden door = (1.95×0.99) - 0.3025 m² = 1.628m²

so Qwood = 0.12 × 1.628 × (19°C - (-6.50°C)) / 0.061m)

= 0.19536 × 418.0327

Qwood = 81.67 watt

Q = Qglass + Qwood

Q = 49.57 watt  + 81.67 watt

Q = 131.24 watt

The factor of increased heat flow is;

f = 131.24 watt / 97 watts

f = 1.353

Answer:

a.) 75 N

Explanation:

Force = mass × acceleration

Here,

Mass (m) = 25 kg

Acceleration (a) = 3 m/s²

Force (F) = ?

Using the formula,

F = ma

F = 25 × 3

F = 75 N

Hope it helps ⚜

Answer:

The correct option is (b).

Explanation:

Given that,

Electric field, \(E=2\times 10^2\ N/C\)

We need to find the magnitude of the force on the electron as a result of the electric field.

We know that, the electric force is given by :

\(F=qE\\\\=1.6\times 10^{-19}\times 2\times 10^2\\\\F=3.2\times 10^{-17}\ N\)

So, the required force on the electron is equal to \(3.2\times 10^{-17}\ N\).

Answer: mindsets can affect learning

Explanation: negative mindsets vs positive ones, individually affect someone. As everyone is different, this could differ between certain people(s). Generally, it is thought the more positive the mindset, the more positive the affect.

Answer Yes you answered correctly.

Explanation:

Gases, such as the air or helium inside a balloon, take the shape of the containers they're in. They spread out so that the space is filled up evenly with gas molecules. The gas molecules are not connected.

Answer:

Yea ur right

Explanation:

Answer:

The basic answer is sea flows. On the off chance that the air making a trip to New York moves via land, it will be cooler than the air and flows that reach, for instance, San Francisco. Along these lines, Rome is hotter than New York because of flows, topography and air development designs.

Explanation:

Brainliest?

In order to measure the angle of incidence and the angle of refraction using Tracker's protractor tool (the green angle in the video frame), the following steps should be followed:

Step 1: Open the video in Tracker software.

Step 2: Click on the "Measure" button on the toolbar at the top of the software.

Step 3: From the dropdown menu, select "Angle".

Step 4: Click on the "protractor tool" icon (the green angle in the video frame).

Step 5: Position the vertex of the protractor exactly at the origin of the coordinate axis and move the arms of the protractor so that one arm is on the vertical axis (above or below, as appropriate) and the other on the light ray.

Step 6: Measure the angle of incidence and the angle of refraction for the frame numbers specified in the table below by using the step buttons on the right to advance the video a frame at a time.

Step 7: Record the measured angles in the table below. Note that the angle of incidence should be measured on the incident ray (the ray that is coming from the left), and the angle of refraction should be measured on the refracted ray (the ray that is coming from the right).In conclusion, by following these steps, one can measure the angle of incidence and the angle of refraction using Tracker's protractor tool.

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(1) The distance of the image formed by the lens is determined as 6 cm.

(2) The image formed is real.

The distance of the image formed by the lens is calculated by applying the following formula as follows;

1/f = 1/v + 1/u

where;

The distance of the image formed by the lens is calculated as;

1/v = 1/f - 1/u

1/v = 1/2 - 1/3

1/v = 1/6

v = 6 cm

Since the sign of the image of the image is positive, the image formed is real.

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Given :

The decibel scale intensity for busy traffic is 80 dB.

Two people having a loud conversation have a decibel intensity of 70 dB.

To Find :

The approximate combined sound intensity.

Solution :

We know, intensity in decibel can be converted to W/m² by :

\(\beta(dB) = 10\ log_{10}( \dfrac{I}{I_o})\)

Putting intensity in decibel scale, we get :

\(I(80\ dB ) =10^{-4}\ W/m^2\\\\I(70\ dB ) = 10^{-5}\ W/m^2\)

Let, combine intensity is I .

I = I(80 dB) + I(70 dB)

\(I = 10^{-4} + 10^{-5} \ W/m^2\\\\I = 1.1 \times 10^{-4} \ W/m^2\)

Therefore, the combined sound intensity is \(1.1 \times 10^{-4} \ W/m^2\) .

Answer:

4.2

Explanation:

Answer:

the correct answer is sugar

Answer:

In an ionic bond the valence electrons are transferred from the metal

Explanation:

Answer:

Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes

Explanation:

Answer:

The starting velocity.

Explanation:

We must understand that this equation comes from the following equation of kinematics.

\(v_{f}=v_{o}+a*t\)

where:

Vf = final velocity = 33 [m/s]

Vo = starting velocity [m/s]

a = acceleration = 3 [m/s²]

t = time = 30 [s]

So, these values can be assembly in the following way:

\(v_{f}=v_{o}+a*t\\a*t=v_{f}-v_{o}\\3=\frac{33-v_{o}}{30}\)

Scattering is the process of deflection of radiation due to interaction with the particle.

Thus option C: scattering is correct.

the characteristics of the graphs we can find that the correct answer is:

      B.  error bars

Graph is a method of grouping the experimental results in such a way that they can be easily analyzed, in the different types of graphs the experimental values ​​of the points are plotted and if the errors of the measurements at each point are known.

The errors of each point are plotted in the form of bars bounded both by excess and by default, above each plotted point.

Let's analyze the different claims;

A. false The y-axis labels written on this axis

B. True. These are the error bar at each experimental point

C. False. They are not adornments or distractions, they are an important part of the information on the chart.

D. False. The division marks are on the y-axis

In conclusion, using the characteristics of the graphs, we were able to find the correct answer is:

    B.  Error bars

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Answer:

Explanation:

In a conductor, electric current can flow freely, in an insulator it cannot.

Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.

Most atoms hold on to their electrons tightly and are insulators.