which statement correctly line graph
a. the x-axis is on the left side of the graph
b. the responding variable is on the y-axis
c. the line graph has 3 axes
d. the manipulated variable is not shown

Answer:

6.74 x 10¹⁴Hz

Explanation:

Given parameters:

Wavelength  = 4.45 x 10⁻⁷m

Speed of light  = 3 x 10⁸m/s

Unknown:

The frequency of the indigo light  = ?

Solution:

To solve this problem, we use the expression below;

       V  = f ∧

V is the sped of light

f is the frequency

 ∧ is the wavelength

 Now insert the parameters and solve;

        3 x 10⁸  =  f x 4.45 x 10⁻⁷

         f  = 6.74 x 10¹⁴Hz

Answer:

Part A

1) At the starting point, we have;

PE = 40,000 J

2) PE = 0 J, KE = 40,000 J

3) KE = 20,000 J

4) PE = 15,000 J

5) KE = 32,500 J

6) KE = 40,000 J, PE = 0 J

7) KE = 35,000 J

8) KE = 40,000 J, PE = 0 J

Part B

The total Mechanical Energy = ME = 40,000 J

At the final point, we have;

ME = KE + PE = 40,000 J + 0 J = 40,000 J

Explanation:

Part A

By the law of conservation of energy, we have;

ME = PE + KE

Where;

ME = The total Mechanical Energy of the system

PE = The Potential Energy of the system

KE = The Kinetic Energy of the system

Where there is no friction, we have;

At the final stage, KE = 40,000 J. PE = 0 J

Therefore, ME = PE + KE = 40,000 J + 0 J = 40,000 J

1) At the starting point, we have;

KE = 0 J, therefore, PE = ME - KE = 40,000 J - 0 J = 40,000 J

2) At the bottom of the roller coaster, at the same level the PE is taken as PE = 0 J at the final stage, we have;

PE = 0 J, therefore, KE = ME - PE = 40,000 J - 0 J = 40,000 J

3) Where PE = 20,000 J, KE = ME - PE = 40,000 J - 20,000 J = 20,000 J

4) Where KE = 25,000 J, PE = ME - KE = 40,000 J - 25,000 J = 15,000 J

5) Where PE = 7,500 J, KE = ME - PE = 40,000 J - 7,500 J = 32,500 J

6) At the bottom KE = 40,000 J, PE = 0 J

7) Where PE = 5,000 J, KE = ME - PE = 40,000 J - 5,000 J = 35,000 J

8) KE = 40,000 J, PE = 0 J

Part B

The given that there is no friction nor air resistance, the total Mechanical Energy, ME, is constant and equal to the sum of the Potential Energy, PE and the Kinetic Energy, KE, as follows;

ME = KE + PE

At the final point, we have;

ME = 40,000 J + 0 J = 40,000 J

The total Mechanical Energy = ME = 40,000 J

Answer:

B is the answer.

Explanation:

Answer:

3 m/s

Explanation:

rbsbdvebzvsvehdhdbd

Your speed is (36m)/(12sec).

That's 3 m/s. (Choice-A)

There's not enough information to determine your velocity.

The Wavelength and pressure amplitude of the final note is 0.39 m and 0.255 Pa respectively.

The minuscule pressure difference between compressions and rarefactions in a sound wave is what the human ear uses to function. Pressure amplitude refers to the size of these pressure variations. Generally speaking, a sound appears louder the larger the pressure amplitude it has. Even for very loud sounds, these pressure changes are negligible in comparison to ambient pressure. A jet plane at 30 yards, for example, has pressure changes of just a few hundred Pascals, or less than one-hundredth of atmospheric pressure, which is loud enough to cause damage to human ears (which is roughly 100,000 Pa). The pressure amplitudes of the quietest noises that people can hear are approximately one billionth of the atmospheric pressure.

x=Asin (w [ t-K])+ b

Given:

Initial frequency, [tex]f_{initial} = 146.8\;Hz[/tex]

Final frequency, [tex]f_{final} = 880\;Hz[/tex]

Sound level, [tex]\beta=79\;dB[/tex]

We know that,

Speed of the sound, [tex]v=343\;m/s[/tex]

Density of air, [tex]\rho=1.2\;kg/m^{3}[/tex]

Wavelength, [tex]\lambda=\frac{v}{f}[/tex]

Wavelength of final note is,

[tex]\lambda=\frac{v}{f_{final}}[/tex]

Substitute the known values in the above equation,

[tex]\lambda=\frac{343}{880}}[/tex]

[tex]\lambda=0.39\;m[/tex]

[tex]\beta=10\times log(\frac{I}{I_{0}} )[/tex]

We know that, [tex]I_{o}=1 \times 10^{-12}\;W/m^{2}[/tex]

[tex]79=10\times log(\frac{I}{1 \times 10^{-12}} )[/tex]

By solving the above equation, We get,

[tex]I=7.9\times 10^{-5} W/m^{2}[/tex]

Pressure amplitude of the final note is,

[tex]I = \frac{(\triangle p)^{2} }{2 \times \rho \times v}[/tex]

[tex](\triangle p)^{2} = I \times2 \times \rho \times v[/tex]

[tex]\triangle p = \sqrt{I \times2 \times \rho \times v}[/tex]

Substitute the known values in the above equation,

[tex]\triangle p = \sqrt{7.9 \times 10^{-5} \times2 \times 1.2 \times 343}[/tex]

By solving the above equation, We get,

[tex]\triangle p = 0.255\;Pa[/tex]

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The cumulative distance traveled by the bird is 3.12 km.

The cumulative distance of the bird is calculated as follows;

Apply the principle of relative velocity.

Vbt - Vrt = L

(Vb - Vr)t = L

where;

Substitute the given parameters and solve for time of motion,

(41 - 8.2)t = 2.5

32.8t = 2.5

t = 2.5/32.8

t = 0.076 hr

Distance traveled by the bird = 0.076hr x 41 km/hr = 3.12 km

Thus, the cumulative distance traveled by the bird is 3.12 km.

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Answer: -3x+13

Explanation:

The slope of the line that passes through the point (3,4) is 1/3. Then , the intercept of the perpendicular line is 3 . Then, the equation of the line is y = 1/3x + 3.

Coordinates are numbers which describes the position of a shape, curve or line. The coordinates are written in terms of x and y axis values. A line or curve passing through certain points can be represented by an equation.

For a straight line the equation is y = mx + c

where m is the slope of the line and c be the intercept on y- axis.

For two perpendicular lines, the slope will be opposite inverse of each other.

The slope of the line y = -3x + 1 is -3. Then, the slope of the line which is perpendicular to this line is - (1/-3) = 1/3.

Then the equation of the line is y = 1/3 x + c.

given the line passes through the point (3,4).

Then,

4 = 1/3×3 + c

c = 3.

Therefore, the equation of the second line is y = 1/3 x + 3.

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Answer: 96 N/kg

Explanation:

Answer:

the warm air rises, cools and condenses to form clouds

Answer:

N

Explanation:

Plato

Answer: What is the force acting down the plane?

• Opp= hyp (sinq)= 450(sin30)= 225 N

• What is the force acting perpendicular to the plane?

• adj= hyp (cosq)= 450(cos30)= 390 N

Explanation:

Answer:

Explanation:

Kinetic force is the force caused kinetic energy. Kinetic energy is energy this is in movement such as a moving car or a falling rock.

As, orbital period of jupiter is equivalent to 12 years.

So, monitoring sun for 50 years will give periodic peaks in intensity.

The power transferred per unit area is referred to in physics as the intensity or flux of radiant energy, and the area is measured on a plane perpendicular to the direction of the energy's transmission. Watts per square meter are the base units of the SI system. The term "intensity" is most often used to describe the average power transfer during a wave's duration, such as sound waves or electromagnetic waves like light or radio waves. There are many different energy exchange scenarios that can be described using the word intensity. One could figure out how much kinetic energy each drop of water from a sprinkler is carrying, for instance.

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Answer:

Answer is Electrons

Explanation:

If there is gain of electron then it will result a negative charge. And when there is loss of electrons it will result in the formation of positive charge iron.

Answer:

C. 1.3 x 10-11 F

I took the test and got this correct, hope this helps

Explanation:

Answer:

Gabriella is not moving

Explanation:

This type of problem can be solved by having the concept of relative velocities clear. Two bodies move at Equal velocity 4 [m/s] towards Pierre. But they ask us about how Michelle sees Gabriella moving.

Since Gabriela moves at the same speed as Michelle, when Gabriela turns her head to see Michelle, she doesn't seem to move faster or slower than she does.

A classic example is when we are passengers of a car and in a window next door we see, a car next to us, this car seems static before our eyes, but we are aware that it moves at a speed equal to that of the vehicle we occupy.

Answer:

[tex]17.89\ \text{m/s}[/tex]

Explanation:

Velocity is given by

[tex]v(t) = 16.02\hat{i}-7.96(1 + t)\hat{j} + 0.76t^3\hat{k}[/tex]

Initial velocity is asked so t = 0

[tex]v(0)=16.02\hat{i}-7.96(1+t)\hat{j}+0.76\times 0\hat{k}\\\Rightarrow v(0)=16.02\hat{i}-7.96\hat{j}[/tex]

Magnitude is given by

[tex]|v|=\sqrt{16.02^2+(-7.96)^2}\\\Rightarrow |v|=17.89\ \text{m/s}[/tex]

The initial velocity of the glider was [tex]17.89\ \text{m/s}[/tex].

Answer:

fossil fuels are petroleum and natural gas. Well Fossils are mineralized remains of ancient plants and animals

Answer:

Increases

Explanation:

For a given force, as the time increases, the impulse related to that force increases also.

Impulse and time are directly related to one another. Impulse is mathematically given as:

           I  = F t

I is the impulse

F is the force

t is the time taken

So, as both force and time increases, the value of the impulse must increase.

The change in the vertical height of the person is obtained as 2.5 m.

Let us recall that gravity is a universal force of attraction that acts on any object that is found to be on the surface of the earth. It is instructive to know that gravity can only be an attractive force.

As the  person slides down the zip wire, the position of the person is changing. We have to know that the gravitational potential energy of the person is dependent on the position of the wire. As such, as the position changes, the gravitational potential energy of the person is also changing.

Using the formula;

W = mgh

W = gravitational potential energy

m = mass of the object

g = acceleration due to gravity

h = height of the body

If we substitute the values we have;

h = W/mg

h = 1.47 * 10^3/ 9.8 * 60

h = 2.5 m

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The reading of the given passage on astronomy gives;

Sentence (1) is the main idea or background statement with regards to astronomy, with regards to the sources of concepts being used in astronomy. It conveys the subject matter of passage.

Sentence (2) gives more light to the statement of sentence (1). It gives the supporting details of the concepts astronomers inherited from antiquity, by outlining them; (angles and angular measure system used locate stellar objects), while sentence (4) gives a little information with regards to the use of angular system.

Therefore;

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Answer:

Engineers determine which features the material must have.

Explanation:

The statement provides an example of designing a solution in the technological design process is B. Engineers determine which features the material must-have.

Steps of the technological layout system encompass: pick out trouble, research the hassle, generate possible answers, pick out the fine solution, create a version, test the model, refine and retest the model as wished, and talk the final answer.

The design answer definition can be used to generate the quit product specifications with a view to be used to produce the product and to conduct product verification. This technique may be in addition delicate depending on whether or not there are extra subsystems of the quit product that need to be defined.

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Answer:

thank for making me give up on life

Explanation:

I thought the stuff I had was hard wth is even that

The speed of the car when you hit the police car is 26.154 m/s.

The speed of the car's v = 110km/h = 30.56 m/s

The total time travel will also include the reaction time:

t = 2 + 0.4 = 2.4 s

For police,

The acceleration, a = - 5 m/s²

The distance traveled is:

[tex]S(p) = vt + (\frac{1}{2} ) \times at^{2}[/tex]

[tex]S(p) = 30.56 \times 2.4 + \frac{1}{2} \times (-5) \times (-2.4)^{2}[/tex]

S(p) = 58.93 m

Now, the original gap between the car was 25 m.

Therefore, the final gap = (25 − 73.33 + 58.93) m = 10.6 m

As a result, let's say that at time t₀, the distance between the cars is 10.6 meters.

The speed of the police car at t₀ will be:

v(p) = (30.56 − 5 × 2.4) = 18.56m/s.

Now, the collision occurs at a time t when S = S(p)

We pick your position's coordinates to be S = 0 and the police car's position to be S(p) = 10.6m at time t₀ .

Therefore,

[tex]S(p) - 10.6 = 18.56(t - t_{0}) - \frac{1}{2} \times (5) \times (t - t_{0})^{2}[/tex]

S(p) = 10.6 + 18.56t − 2.5t²

​And,

[tex]S = 30.56 (t - t_{0}) - \frac{1}{2} \times (5) \times (t - t_{0})^{2}[/tex]

When the distances are equal.

S = S(p)

30.56 (t - t₀) - (1/2)(5)(t - t₀)² = 10.6 + 18.56t − 2.5t²

t =  0.883 sec

So, the speed of your car during the collision will be:

v = 30.56 - 5(0.883) = 26.154 m/s

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The complete is mentioned below:

You are arguing over a cell phone while trailing an unmarked police car by 25m; both your car and the police car are traveling at 110km/h. Your argument diverts your attention from the police car for 2.0s (long enough for you to look at the phone and yell, “I won’t do that!”). At the beginning of that 2.0s, the police officer begins braking suddenly at 5.0m/s². What is the separation between the two cars when your attention finally returns? Suppose that you take another 0.40s to realize your danger and begin braking. If you too brake at 5.0m/s², what is your speed when you hit the police car?

Answer:

There are instances when the vectorial component or nature are important in solving problems.

Explanation:

The directional component of the velocity vector might become very important in some situations

Velocity problems involving topography; whether the velocity situation involves uphill or downhill for instance would have significant impact on the equation being solved, as deceleration or acceleration might occur, which would affect the velocity.

The resultant velocity of the boat and the river can be calculated by the application of vector diagram resulting to Pythagorean's theorem.

Velocity is a distance travelled in a specific direction per time taken. Velocity is a vector quantity and some questions involving velocity can be solved vectorially.

An example where the vectoral nature of velocity would be important when solving a problem will be a scenario where a boat is moving perpendicularly across a flowing river of high current.

Let assume that the river is flowing in west - east direction with a certain velocity. And the boat is moving across the river in north - south direction with a specific velocity.

The resultant velocity of the boat and the river can be calculated by the application of vector diagram resulting to Pythagorean's theorem.

Therefore, the vectoral nature of velocity will be important when solving a resultant velocity problem of a boat crossing a flowing river.

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The energy efficiency of growing corn converted to milk is 50 percent corn efficiency produce 50 percent milk efficiency

Given data

annual milk production = 72 billion liters from 8 million cows

annual milk production = 72 billion liters / 8 million cows

annual milk production = 9000 liters / cow per annum

On average, a single cow consumes 13,500 kg of corn feed each year

40 MJ to produce a kilogram of corn feed, which contains 20 MJ of energy

15 MJ of energy in a single liter of milk

Energy efficiency of corn = energy output / energy input * 100

energy output = 20MJ

energy output = 40MJ

Energy efficiency of corn = 20 / 40 * 100

Energy efficiency of corn = 50 %

Energy efficiency of milk = energy output / energy input * 100

energy output = 13,500 * 20 = 270 000

energy output = 9000 * 15 = 135 000

Energy efficiency of milk = 135 000 / 270 000 * 100

Energy efficiency of milk = 50 %

Therefore 50 percent corn efficiency produce 50 percent milk efficiency

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complete question

Approximately 72 billion liters of milk are produced each year in the United States, from 8 million cows. On average, a single cow consumes 13,500 kg of corn feed each year. It requires 40 MJ to produce a kilogram of corn feed, which contains 20 MJ of energy. There are 15 MJ of energy in a single liter of milk.

1. Calculate the energy efficiency of growing corn and converting it to milk

Answer:

drinking enough fluids, wearing proper clothing and timing your workout to avoid extreme heat