a pipe of cross sectional area 1.2 m2 narrows to a pipe of cross-sectional area 0.4 m2. if the fluid is traveling at 1.7 m/s in the larger pipe, calculate the fluid speed in the narrower pipe.

The centripetal force that must be exerted against the wings to keep the plane moving in a circle is 3.71 × 10⁴ N.

Given that,

Time = 30 min = 30 × 60 sec = 1.8 × 10³ s

Radius = 50 km = 50× 10³ m = 5× 10⁴ m

We know the expression for velocity as,

v = 2πr/(T) = (2π×5× 10⁴) /(1.8 × 10³) = (π×10⁵)/(1.8 × 10³) = (100× 3.14)/1.8 = 174.44 m/s ≈ 175 m/s

Mathematically, centripetal force can be written as,

F = mv²/r = (60,500× 175²)/(5× 10⁴) = 3.71 × 10⁴ N

Thus, required centripetal force is 3.71 × 10⁴ N.

The question is incomplete. The complete question is ' Captain Chip, the pilot of a 60,500-kg jet plane, is told that he must remain in a holding pattern over the airport until it is his turn to land. If Captain Chip flies his plane in a circle whose radius is 50.0 km once every 30.0 min, what centripetal force must the air exert against the wings to keep the plane moving in a circle?'

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Answer:

The point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed is called focal point

Answer:

\(9.7\times 10^{-4}\ rad/s\)

Explanation:

Given:

\(m=500 kg\\F=3000 N\)

\(Radius of earth , R=6371 \times 10^3\ m\\Angular speed =\omega\\We\ know\ that\ \\F= m\times \omega^{2} \times R\\\omega^{2}=\frac{F}{m*R} \\\\=\frac{3000}{500*6371 \times 10^3\ m}\)

=\(\frac{6}{6371 \times 10^3\ m}\)

=\(9.7\times 10^{-4}\ rad/s\)

Hi there!

We can begin by calculating the distance remaining after the reaction time.

Δd = vt

Calculate the distance traveled within this time:

Δd = (16)(.79) = 12.64 m

Subtract from the total distance:

150 - 12.64 = 137.66 m remaining

We can use the following equation to solve for the acceleration necessary:

vf² = vi² + 2ad, where vf = 0 since the train will have slowed down to rest.

Rearrange in terms of "a":

0 = vi² + 2ad

(-vi²) = 2ad

(-vi²)/2d = a

Plug in the given values:

(-(16²))/2(137.66) = a

-256/275.32 = -.9298 m/s²

Answer:

transverse

Explanation:

Answer:

Transverse wave is the correct answer, the person above me is correct!

~Hope this helps! :)

1. They have evolved their leaves into spikes for minimum water loss through transpiration.

2. They have a waxy layer for minimum water loss.

3. They have thick walls for minimum water loss.

4. They can take water from atmosphere.

5. They change the photo energy from Sun into an intermediate stage and store it, so that they can make food even in night.

Answer:

c

Explanation:

i think

Answer: B

Explanation:

Answer:

To calculate the change in gravitational potential energy of the book as it falls from different starting points, we need to use the formula:

ΔPE = mgh

where ΔPE is the change in gravitational potential energy, m is the mass of the book, g is the gravitational acceleration (9.81 m/s^2), and h is the change in height.

A) If the book is released from a point on the floor of the room to the left of the hatch, it will fall towards the hatch and then fall further towards the basement floor. The change in height is the distance from the floor to the basement floor, which is 2.2 meters. Therefore, the change in gravitational potential energy is:

ΔPE = (7.5 N) x (9.81 m/s^2) x (2.2 m) = 162.8 Joules

B) If the book is released from a point on the floor of the room to the right of the hatch, it will fall towards the hatch and then fall further towards the basement floor as well. Therefore, the change in gravitational potential energy is the same as in Part A:

ΔPE = (7.5 N) x (9.81 m/s^2) x (2.2 m) = 162.8 Joules

C) If the book is released from a point at the height of the chair seat (0.45 m above the floor), it will fall towards the hatch and then fall further towards the basement floor. The change in height is the distance from the chair seat to the basement floor, which is:

h = 0.45 m + 2.2 m = 2.65 m

Therefore, the change in gravitational potential energy is:

ΔPE = (7.5 N) x (9.81 m/s^2) x (2.65 m) = 187.8 Joules

D) If the book is released from a point at the height of the bookshelf (1.5 m above the floor), it will fall directly towards the basement floor. The change in height is the distance from the bookshelf to the basement floor, which is:

h = 1.5 m + 2.2 m = 3.7 m

Therefore, the change in gravitational potential energy is:

ΔPE = (7.5 N) x (9.81 m/s^2) x (3.7 m) = 268.4

20 drops per millilitre. Example: To convert 15 drops to millilitres, multiply by 0.05 to get 0.75 mL.

A drop is a unit of volume commonly used in medicine and cooking. The volume of a single drop can vary depending on factors such as the size of the dropper or the liquid being measured, but a commonly accepted standard is that one drop is equal to approximately 0.05 milliliters (mL).

It's important to note that relying on drops as a precise measurement can be problematic, as variations in dropper size, liquid viscosity, and other factors can cause significant variations in the actual volume of a drop. For this reason, it's often more accurate to use graduated measuring devices like syringes or graduated cylinders when precise measurements are required.

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Answer:

Hi I'm happy to meet you and the answer for your question is true. If you need me to state the law ask me

Answer:

Your mass is the same no matter where you go in the universe; your weight, on the other hand, changes from place to place. Mass is measured in kilograms; even though we usually talk about weight in kilograms, strictly speaking it should be measured in newtons, the units of force

In summary, mass is a measure of how much matter an object contains, and weight is a measure of the force of gravity acting on the object. ... The amount of gravity is directly proportional to the amount of mass of the objects and inversely proportional to the square of the distance between the objects.

Explanation:

The lawn mower is moving with a velocity of 17.53 m/s

Energy is the ability to do work while Work is defined as the product of force and distance moved in the direction of the force. Both work and energy are measured in Joule (J)

Work = Force (F) × distance (d) = FdCosθ

With the above formula, we can obtain the energy used in pushing the lawn mower as illustrated below

From the question given above, the following data were obtained:

•Force (F) = 75 N

•Distance (d) = 25 m

•Angle (θ) = 35°

•Energy (E) =?

E = FdCosθ

E = 75 × 25 × Cos 35

E = 1535.91 J

Velocity is the rate of change of displacement with time.

Velocity and energy are related according to the following equation:

E = ½ × mass (m) × square velocity (v²)

E = ½mv²

With the above formula, we can obtain the velocity of the lawn mower as follow

•Mass (m) = 10 Kg

•Energy (E) = 1535.91 J

•Velocity (v) =?

E = ½mv²

1535.91 = ½ × 10 × v²

1535.91 = 5 × v²

Divide both side by 5

v² = 1535.91 / 5

Take the square root of both side

v = √(1535.91 / 5)

v = 17.53 m/s

Thus, the lawn mower is moving with a velocity of 17.53 m/s

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The heat lost by water is equal to the heat gained by ice here. The heat lost from water for a temperature change of 25 to 10 degree Celsius is 12300 J.

Calorimetry is an analytical technique used to determine the heat energy absorbed or evolved by a system. The calorimetric equation relating the heat energy q with the mass m, specific heat c and the temperature difference ΔT is :

q = m c ΔT

Here, the heat energy gained by the dry ice is equal to the heat lost from water.

temperature difference for water = 25- 10 °C = 15°C

thus, 15°C is lost from water.

mass of water = 200 g

q =200 g × 4.12 J/°C g × 10°C = 12300 J

Therefore, the heat energy lost from water is 12300 J.

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The systems that are most commonly described by schematics are electrical and mechanical systems. A schematic is a type of diagram that illustrates how a system works by showing the interconnections between components. It provides a visual representation of the system's architecture that is easy to read and interpret.

The schematic diagram displays the components of the system and their connections. Schematic diagrams can be used to explain complex systems in a simple way. They are particularly useful for illustrating how electrical and mechanical systems work.A mechanical schematic is a diagram that shows the mechanical components of a system, such as gears, belts, and pulleys. It provides a visual representation of how the system is designed to work, allowing engineers to identify potential problems and optimize the design. Electrical schematics, on the other hand, show the wiring and electronic components of a system. They provide a clear and concise representation of how electrical signals flow through the system, making it easy to identify potential problems and troubleshoot issues.

Schematic diagrams are used in a wide range of fields, from automotive and aerospace engineering to robotics and computer hardware design. They are an essential tool for engineers and designers who need to understand the inner workings of complex systems.

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Every tube in the load must have a companion right across in the rotor holder in order for the centrifuge to be balanced.

In many laboratories, centrifuges are employed to separate fluids, gases, or liquids according to their densities. Centrifuges are often employed in clinical and research facilities for the purification of cells, organelles, viruses, proteins, and nucleic acids.

The separation of different components of whole blood using a centrifuge is an example of its usage in a clinical environment. Serum or plasma is required for several tests and can be obtained by centrifugation.

A full blood sample is allowed to clot at room temperature in order to get serum. The clot is subsequently removed from the sample by centrifugation, leaving a serum supernatant behind.

Plasma, in contrast to serum, is made from whole blood that has not been allowed to clot; it contains serum as well as clotting factors. A full blood sample is taken in tubes that have been anticoagulant-treated in order to get plasma.

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To find the total charge contained in a cube with a side length of 2 m, located in the first octant with one corner at the origin, we need information about the charge density (ρv).

The charge density (ρv) represents the amount of charge per unit volume. To calculate the total charge, we need to multiply the charge density by the volume of the cube. The volume of a cube is given by V = (side length)^3. In this case, the side length is 2 m, so the volume is 2^3 = 8 cubic meters. Multiplying the charge density (ρv) by the volume (8 cubic meters) will give us the total charge contained in the cube. However, without specifying the value or function of the charge density (ρv), we cannot determine the exact total charge.

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Answer:

No.

Explanation:

The cut cucumber is still a cucumber.

Answer:

Nope.

Explanation:

Chemical change is transforming the cucumber into a pickle. However, you need vinegar, so it isn't a full change.

Therefore, Mr. Mann would not be right either way, because all he did was cut a cucumber, and he should probably get some help with all this "chemical change".

Answer:

Concentrating solar power (CSP) plants use mirrors to concentrate the sun's energy to drive traditional steam turbines or engines that create electricity.

Explanation:

The Sun spends a significantly longer time, around 10 billion years (10 Gyr), on the Main Sequence compared to only about 100 million years (100 Myr) on the Horizontal Branch/Red Clump. This difference is primarily due to the difference in the energy production mechanisms and the availability of fuel in each stage of stellar evolution.

During the Main Sequence phase, stars like the Sun fuse hydrogen into helium in their cores through the process of nuclear fusion. This releases a tremendous amount of energy and provides the main source of the star's power. The Sun is currently in this phase and is estimated to spend approximately 10 Gyr in total on the Main Sequence.

However, as the hydrogen fuel in the core becomes depleted, the Sun will evolve into the next stage known as the Horizontal Branch/Red Clump. In this phase, the core contracts and heats up, allowing helium fusion to occur. While helium fusion is also an energy-producing process, it is much less efficient than hydrogen fusion. Consequently, the Sun will spend a comparatively shorter time, around 100 Myr, in this phase.

The shorter duration on the Horizontal Branch/Red Clump is primarily due to the limited amount of helium fuel available for fusion compared to the vast reservoir of hydrogen in the core during the Main Sequence phase. The consumption of helium is faster, resulting in a relatively shorter duration for this evolutionary stage.

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Answer: the density changed, the salt dissolved in the water, the salt and the water can still be separated into their individual molecules.

Explanation: physical changes are changes in size, shape, or state. Another way to think about a physical change is any change not involving a change in the substance’s chemical identity. You cannot write a chemical equation for salt water because the chemical identity is still salt AND water

trust me i did it

Explanation:

Total displacement = 200 km

Total time taken = 2 hour...

Now...

\(average \: velocity \: = \frac{total \: displacement}{total \: time \: taken \: } \\ \)

\( = \frac{200}{2} \\ \)

= 100 kilometers/hour south

Answer :millimeter-wave

Explanation: Because, it uses low-energy non-ionizing radiation that releases thousands of times less energy than a cell phone.

The time and speed of the vehicle needed are:

A) The vehicle ought to go at 31.9 m/s.

B) The speed of the vehicle not long before it lands on the opposite side is 37.0 m/s.

A) If it's not too much trouble, see the joined figure for a superior portrayal of the issue. At the point when the vehicle arrives at the opposite side of the waterway, its position vector will be r₁ .The parts of this vector are r₁x and r₁y.Assuming we place the beginning of the casing of reference at the edge of the bluff, the parts of the vector r₁ will be:

r₁x = 61.0 m

r₁y = - 20.0 m + 2.1 m = - 17.9 m

The conditions for the x and y-parts of the position vector of the vehicle are the accompanying:

x = x₀ + v₀ · t,y = y₀ + 1/2 · g · t²

Where:

x = flat situation at a time t.

x₀ = beginning level position.

v₀ = beginning speed.

t = time.

y = vertical situation at a time t.

y₀ = starting vertical position.

g = speed increase because of gravity (- 9.8 m/s² thinking about the vertical bearing as certain).

Utilizing the condition of the y-part of r₁, we can make the opportunity it takes the vehicle to arrive at the opposite side of the stream. We need to set aside the opportunity at which the vector r₁y is - 17.9 m:

y = y₀ + 1/2 · g · t² (y₀ = 0 in light of the fact that the beginning of the casing of reference is situated at the edge of the bluff).

y = 1/2 · g · t²

-17.9 m = - 1/2 · 9.8 m/s² · t²

-17.9 m/ - 4.9 m/s² = t²

t = 1.91 s

Presently, utilizing the condition of the x-part, we can track down the underlying speed. We know that at t = 1.91 s, the level part of the vector r1 is 61.0 m:

x = x₀ + v₀ · t (x₀ = 0 in light of the fact that the beginning of the casing of reference is situated at the edge of the precipice).

x = v₀ · t

61.0 m = v₀ · 1.91 s

v₀ = 61.0 m/1.91 s = 31.9 m/s

The vehicle ought to go at 31.9 m/s.

B) The condition of the speed vector of the vehicle is the accompanying:

v = (v₀,+g · t)

The flat part of the speed vector is v₀, 31.9 m/s.

We should compute the worth of the upward part:

v\(_y\) = g · t

v\(_y\)  = - 9.8 m/s² · 1.91 s

v\(_y\) = - 18.7 m/s

Then, the speed vector of the vehicle not long before it lands on the opposite side is the accompanying:

v = (31.9, - 18.7) m/s

The extent of this vector is determined as follows:

|v| = √[(31.9 m/s)² + (- 18.7 m/s)²]

|v| = 37.0 m/s

The speed of the vehicle not long before it lands on the opposite side is 37.0 m/s.

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(Complete question) is:

A car comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 20.0 m above the river, whereas the opposite side is a mere 2.1 m above the river. The river itself is a raging torrent 61.0 m wide.

A) How fast should the car be traveling just as it leaves the cliff in order to just clear the river and land safely on the opposite side?

B) What is the speed of the car just before it lands safely on the other side?

It is 1.93 metres away from the post.

for vertical motion

\(S= u t + \frac{1}{2} g t^{2}\)

S = 0 +  \(\frac{1}{2} g t^{2}\)

1.7 = \(\frac{1}{2} 9.8 t^{2}\)

t = 0.589 sec

using law of  conservation of momentum, on the horizontal motion

\(m_{bullet} \ v_{bullet i} = m_{bullet} \ v_{bullet f} + m_{tin} \ v_{tin}\)

\(0.0020 = 0.0020 \ 3 \ 720 + 0.11 \ v_{tin}\)

\(v_{tin}\) = 3.273 m/s

S = \(v_{tin} \ t\)

   = 3.273 m/s * 0.589 s

   = 1.93 m

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If higher-frequency standing wave in the cavity produces nodal planes with a spacing of 1.25 cm, the distance L between the walls of the cavity is 7.5cm.

The general formula for both ends closed is (n+1) λ/2

Let's say for n, \(\frac{\pi }{2} n = 1.5 = \pi = 3cm\)

for (n+1), λ(n+1)/2 = 1.25 = λ(n+1) = 2.5cm

∴ (n+1) (1.5) = (n+2)(1.25) = n = 4

∴  L = (4+1)(3/2) = L = 7.5cm.  

Electromagnetic waves, or EM waves, are waves produced by oscillations between electric and magnetic fields. In other words, EM waves consist of oscillating magnetic and electric fields. Gamma rays have the highest frequencies in the electromagnetic spectrum.

Most sunrise alarm clocks are yellow to simulate the brightness of the sun. This energizing color is the color your body naturally associates with the morning. Colors like purple and red are often used for simulating the sunset and may be more conducive to falling asleep.

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Answer: No, they cannot

Explanation:

Because every individual has different emotions, different beliefs.

A 0.1mm diameter glass tube is inserted into an ethyl alcohol at 20 degrees centigrade in a cup. The angle of alcohol with the tube is 0 degrees. D = 0.1 mm = 0.001m, alcohol angle is 0 degrees, ethyl alcohol

\(η=1.1×10^-3 N⋅sec/ m², s_g\)

=0.79.

We have to determine how much glycerin rises in the tube. The force that moves the liquid through the tube is the difference between the downward force of gravity on the liquid column and the upward capillary force produced by the surface tension of the liquid against the walls of the tube.

The height to which the fluid rises in a capillary tube may be measured by balancing the capillary force against the force of gravity on the column.

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Net force on the rocket can be calculated by using Newton's Second Law. \(a = F_{net}/m\)

can be used to calculate acceleration

Newton's Second Law of Motion states that the net force acting on an object is equal to the product of its mass and acceleration. Therefore, to find the net force on the rocket the instant after the fuel ignites, we need to calculate the acceleration of the rocket. This can be done using the formula

\(a = F_{net}/m\),

where\(F_{net}\) is the net force and m is the mass of the rocket. Once we know the acceleration of the rocket, we can use it to find the net force by rearranging the formula to

\(F_{net} = ma\)

Therefore, to find the net force on the rocket the instant after the fuel ignites, we need to calculate its acceleration using \(a = F_{net}/m\), and then use the formula\(F_{net} = ma\) to find the net force.

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Answer:

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