What is a description for this type of lion fish?

Answer: Dog's speed = (20 + 35) /12 = 4.583 m/s

Dog's velocity = (20-35)/12 = -1.25 m/s

Explanation: Speed is a scalar quantity so we don't care about direction which means we add the magnitude of both the directions i.e. east and west.

About the velocity, it's a vector quantity. So, we must be very careful with the directions and signs. In cartesian coordinates system, we generally take the right side of origin as the positive x-axis and the left side of origin as the negative x-axis. So, considering the same fact, we consider east as positive side and west as the negative side.

Therefore, when we add 20m + (-35m), we get = -15m and you already have the time period of  12 s.

T he relationships between the systems of units of temperarua can be completed in the table

             K = ºC +273

           ºF = 9/5 ºC + 32

Systems of units are systems that arbitrarily define which are the fundamental units of measurement. The most widely used system worldwide is the International Measurement (SI) where the basic units are: Length, mass, time, absolute temperature, current, amount of substance and light intensity, all other units are derived from these.

But there are still in the world several practical systems that are used, among them the temperature measurement is one of the measurements that has more practical systems, for example the centrifugal and fahrenheit degrees are extremely used.

The relations to pass between systems of units of temperature we have;  

           K = ºC +273

           ºF = 9/5 ºC + 32

With these expressions we can make the changes of units

1) T = 0ºC

              K = 0 + 273

              K = 273 K

              ºF = 9/5 0 + 32

              ºF = 32º F

2) T = 212ºF

               ºC = 5/9 (ºF-32)

               ºC = 5/9 (212 - 32)

               ºC = 100ºC

                K = 100 + 273

                K = 373

3) T = 450 K

               ºC = K - 273

               ºC = 450-273

               ºC = 177ºC

               ºF = 9/5 177 +32

               ºF = 350.6ºF

4) T = 98.6ºF

                ºC = 5/9 (98.6 - 32)

                ºC = 37ºC

                 K = 37 +273

                 K = 310K

5) T = -273ºC

                 K = -273 +273

                 K = 0

                 ºF = 9/5 (-273) + 32

                 ºF = 523.4ºF

6) T = 294K

                  ºC = 294 -273

                  ºC = 21ºC

                  ºF = 9/5 21 + 32

                   ºF = 69.8ºF

7) T = 77ºF

                   ºC = 5/9 (77 -32)

                   ºC = 25ºC

                    K = 25 + 273

8) T = 225K

                    K = 298K

                   ° C = 225 - 273

                   ºC = -48ºC

                   ºF = 9/5 (-48) + 32

                   ºF = -54.4ºF

With the equivalences between sysems of units, units can be converted from one system to another.

Be careful since some of the equation is of physics, the temperature must be in absolute units or in degrees kelvin.

In conclusion, with the relationships between the systems of temperature units, the table can be completed

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Answer:

2.2

Explanation:

It then pauses before flying with an average velocity of 6.8 m/s east for 3.5 s to another branch.

Answer:

9 m/s

Explanation:

The seagull flew at a constant velocity for a total of 32 seconds.

One-quarter of 32 is:

[tex]\implies \dfrac{1}{4} \times 32=\dfrac{32}{4}=8\; \sf seconds[/tex]

Therefore, if the seagull flew 72 meters in one-quarter of 32 seconds, it flew 72 meters in 8 seconds.

[tex]\boxed{\sf Speed=\dfrac{Distance}{Time}}[/tex]

To find the velocity (speed) of the seagull, substitute the distance and time into the formula:

[tex]\implies \sf Velocity=\dfrac{72}{8}=9\; \sf m/s[/tex]

For the student that walks to the right 25 m in 15 s and then turns and walks to the left 15 m in 8.0 s, we have:

1. The average speed is 1.74 m.

2. The average velocity is 1.42 m.

1. The average speed is an scalar wich is given by:

[tex] V = \frac{d_{t}}{t_{t}} [/tex]

Where:

[tex]d_{t}[/tex]: is the total distance

[tex]t_{t}[/tex]: is the total time

The total distance and the total time can be calculated as follows:

[tex]d_{t} = d_{1} + d_{2} = 25 m + 15 m = 40 m [/tex]

[tex] t_{t} = t_{1} + t_{2} = 15 s + 8.0 s = 23 s [/tex]

Since V is a scalar, the direction of motion is not important to calculate the final value.

Then, the average speed is:

[tex] V = \frac{d_{t}}{t_{t}} =\frac{40 m}{23 s} = 1.74 m/s [/tex]

2. The average velocity is a vector, so the direction of motion is important here. This ΔV can be calculated with the following equation:

[tex] \Delta V = \frac{\Delta x}{\Delta t} = \frac{x_{f} - x_{i}}{t_{f} - t_{i}} [/tex]

Where:

x: is the displacement  

f: is for final and i: is for initial

Hence, the average velocity is:

[tex] \Delta V = \frac{x_{f} - x_{i}}{t_{f} - t_{i}} = \frac{15 m - 25 m}{8.0 s - 15 s} = 1.42 m/s [/tex]

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Answer:

1.38 s

Explanation:

Use the free falling formula

T = √(L)/ g

T = √18.75/9.8

T = 1.38 s

Answer:

34

Explanation:

i dont know for real

the nature of a machine having more power can work fast

Answer:

Acceleration

Explanation:

Let me teach u a trick, most teachers loves to tell students to memorize what the slope means, and what does the area below the graph mean, and i think this is bs

So how u do it is this

Now it is a velocity vs time

Now to find the slope u would take

Velocity / time

Now what is the unit for velocity? m/s

What is the unit for time? s

Therefore since u know to find the slope u use

Velocity divide by time

So just take the unit of velocity divide the unit of time and see what unit u get

m/s ÷s

m/s x 1/s

= m/s^2

What unit is this?

This is the unit for acceleration

This trick works for every graph u see, and let me show u an extra bonus one

Now u are velocity vs time graph

Now if they ask u what does the area below graph means?

So u know area is just height x length, in other words y axis × x axis

So it means velocity x time

Therefore what would u get? Same trick

m/s x s

= m

What is m? m is meter, and this stands for displacement

Answer:

The charge of an atom is the number of protons minus the number of electrons.

Explanation:

We have that The acceleration due to gravity on the Moon And

The acceleration due to gravity on the surface of the Earth is approximately

[tex]1.625 m/s^2[/tex]

[tex]9.81 m/s^2,[/tex]

From the Question we are asked

The value of G on earth and moon?

Where G refers to The acceleration due to gravity

Generally

The acceleration due to gravity on the Moon is approximately

[tex]1.625 m/s^2,[/tex]

And

The acceleration due to gravity on the surface of the Moon is approximately

[tex]9.81 m/s^2,[/tex]

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Conversion of mass from grams into kg :

Answer:

Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases.

Answer:

When waves travel from one medium to another the frequency never changes.

Explanation:

As waves travel into the denser medium, they slow down and wavelength decreases. Part of the wave travels faster for longer causing the wave to turn. The wave is slower but the wavelength is shorter meaning frequency remains the same.

Answer:

human body is answer according to our studies

Explanation:

The branch is possessing gravitational potential energy.

Answer:

Frequency = 100 Hz

Time period = 0.01 sec

Explanation:

f= 3500/35 = 100

T = 1/f = .01

Answer: I didn't see a difference because the large ball's vertical displacement and velocity are the same as the small one's.

Explanation:

Answer:

Explanation:

A blunt needle won't get the job done as it won't pass through the fabric well

On a velocity - time graph, if the line crosses the x - axis it depicts that the object has started moving in the opposite direction.

Answer:

2 repel attracts light water

Answer:

A magnet has two poles.

Like poles repel each other and unlike poles attract

An electromagnet is used to separate large masses of iron scrap.

The strength of the magnetic field of an electromagnet is increased by inserting a core of soft iron.

In a torch we use a dry cell as the source of electricity.

To light a table lamp and to run a refrigerator, we use mains as the source of electricity.

A group of two or more cells is called a battery.

Conductors pass electricity through them.

The displacement of the mouse is 5m and the total distance is 9m.

The given parameters;

initial displacement of the mouse = 5 m north

second displacement = 1 m South

third displacement = 3 m west

To find:

Displacement is the change in the final position and the initial position of an object.

Distance is the total path covered by the object.

When the mouse was at 1 m south, the displacement = 5 m - 1m = 4m

The displacement of the mouse between 4m south and 3m west is calculated by using Pythagoras theorem.

[tex](displacement)^2 = 3^2 + 4^2\\\\(displacement)^2 = 25\\\\displacement = \sqrt{25} \\\\displacement = 5 \ m[/tex]

The total distance of the mouse = 5 m + 1m + 3m = 9m

Thus, the displacement of the mouse is 5m and the total distance is 9m.

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Answer:

b=t-p(m-n)/s

Explanation:

Answer:

The coil spring of a wind-up clock.

An archer's stretched bow.

Explanation:

[tex] \large \mathfrak{Answer : }[/tex]

The Correct option is D. mobile point-of- sale device.

The digital payment system that enables sellers to accept payment at trade shows, food trucks, concerts, or farm stalls is called a mobile point-of-sale device. Thus, the correct option for this question is D.

The advantages of a digital payment system are as follows:

The mobile point-of-sale device (mPOS) is cost-effective. It involves the breaking down of monthly maintenance and payments on the basis of a cloud-based subscription. It authorizes the sellers to accept the payment at trade. It is one of the fastest modes of payment.

Therefore, a mobile point-of-sale device is a digital payment system that enables sellers to accept payment at trade shows, food trucks, concerts, or farm stalls. Thus, the correct option for this question is D.

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#SPJ2

Answer:

A hot air balloon

Answer:

Explanation:

V=k*q/r

V= (9*10⁹) * 5*10⁷/2

V = 9*10⁹ * 25*10⁶

V = 225*10¹⁵

Answer:

459.195 (N).

Explanation:

in order to calculate the required value of the Fₓ:

Fₓ=F*cos(37°); Fₓ=575*0.7986≈459.195 (N).

For more info see the attachment (note, the required force Fₓ is marked with red colour).