What are the pros of plastic? Please write it in your own words. I’ll give out extra points :)

Answer:

A force pump can be used to raise water by a height of more than 10m, the maximum height allowed by atmospheric pressure using a common lift pump.

In a force pump, the upstroke of the piston draws water, through an inlet valve, into the cylinder. On the downstroke, the water is discharged, through an outlet valve, into the outlet pipe.

According to the standard atmosphere, the air temperature at an altitude of 30,000 feet is 93.15 K, the air pressure is 1394.6 Pa, and the air density is 52.18 kg/m^3.

The standard atmosphere is a model of the Earth's atmosphere that describes how the temperature, pressure, and density of air change with altitude. The values for air temperature, pressure, and density at an altitude of 30,000 feet can be found in the standard atmosphere table.

The air temperature at 30,000 feet is 93.15 K, which is about -130 degrees Celsius. The air pressure at this altitude is 1394.6 Pa, which is about 1.4 psi. The air density at 30,000 feet is 52.18 kg/m^3, which is about one-tenth the density of air at sea level.

The decrease in air temperature, pressure, and density with altitude is due to the fact that there are fewer air molecules at higher altitudes. As the altitude increases, the weight of the air above decreases, and the air molecules spread out more. This results in a lower air pressure and density.

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Answer:

I drive my car at a speed of 30m/s is speed

I drive my car at a speed of 30m/s northward is velocity

Answer:water

Explanation:

Water may be a nutrient that makes up 60% of our body weight. it's important in many functions, it's part of every cell in every tissue in the body.

Water carries other nutrients to all or any parts of the body, it carries waste out of the body and it helps to manage body temperature. When you run or play sports your body heats up pretty quickly.

Your body starts to sweat as a way to get rid of the heat. When the sweat evaporates on your skin your body and blood get cool. it's very important to replace the fluid that is lost by sweating so as not to become dehydrated.

If you get dehydrated the body cannot cool itself anymore and your performance will drop. Without enough water, whether you're exercising or sitting all day, you're at risk for dehydration which can be fatal

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Answer:

it's B

Explanation:

Elastic potential energy is energy stored as a result of applying a force to deform an elastic objects. The energy is stored until the force is removed and the object springs back to it's original shape, doing work in the process. The deformation could involve compressing, stretching or twisting the object

Answer: Elastic energy

Explanation:

A PE X

The correct realistic problem for the given equation is problem 1 in which the electric field strength of the disc is half its value at the center of the disk.

We know that,

Electric field of a charged disc at a distance along its axis is given by,

E = σ / 2 ε ( 1 - x / √ ( \(x^{2}\) + \(r^{2}\) ) )

Electric field at the centre of a charged disc is given by,

\(E_{c}\) = σ / 2 ε ( Since at centre, x = 0 )

Distance along the axis of a charged disk, where electric field strength's value is half its value at the center of the disk.

\(E_{x}\) = \(E_{c}\) / 2

σ / 2 ε ( 1 - x / √ ( \(x^{2}\) + \(r^{2}\) ) ) =  ( σ / 2 ε ) / 2

x / √ ( \(x^{2}\) + \(r^{2}\) ) = 1 / 2

4 \(x^{2}\) = \(x^{2}\) + \(r^{2}\)

3 \(x^{2}\) = \(r^{2}\)

x = r / √ 3 ,which is the correct distance, when magnitude is half its value from centre.

Electric field is a field that surrounds electrically charged particles that exerts force on other charged particles in the field.

Therefore, the given equation is suitable for Electric field of a charged disc at a distance along its axis where electric field strength's value is half its value at the center of the disk.

The given question is incomplete. The completed question is

You are given the following equation to solve a problem:

σ / 2 ε ( 1 - x / √ ( \(x^{2}\) + \(r^{2}\) ) ) = \(E_{c}\) = σ / 2 ε

Choose the most realistic problem for which this could be the correct equation.

1 ) At what distance along the axis of a charged disk is the electric field strength half its value at the center of the disk? Give your answer in terms of the disk's radius R.

2 ) At what distance along the axis of a charged disk is the electric field strength double its value at the center of the disk? Give your answer in terms of the disk's radius R.

3 ) At what distance along the axis of a charged square is the electric field strength double its value at the center of the square? Give your answer in terms of the square's side R.

4 ) At what distance along the axis of a charged square is the electric field strength half its value at the center of the square? Give your answer in terms of the square's side R.

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Answer:

The triboelectic charging process (a.k.a., charging by friction) results in a transfer of electrons between the two objects that are rubbed together. Rubber has a much greater attraction for electrons than animal fur.

Explanation:

HOPE IT HELP^_^

THANKS^_^

If a sound wave transitions from one medium to another, a transition from a medium with a higher speed of sound to a medium with a lower speed of sound would result in a shortening of the wavelength of the sound wave.


1. When a sound wave enters a new medium, its frequency remains constant.
2. The speed of sound depends on the properties of the medium (e.g., density, elasticity).
3. The wavelength of the sound wave can be calculated using the formula: wavelength = speed of sound / frequency.
4. When the speed of sound is higher in the first medium and lower in the second medium, the wavelength will decrease according to the formula since the frequency is constant.

So, a transition from a medium with a higher speed of sound to a medium with a lower speed of sound would cause the wavelength of the sound wave to shorten.

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A sound wave transitioning from a medium with a higher speed of sound to a medium with a lower speed of sound will result in a shortening of the wavelength.

When a sound wave transitions from a medium with a higher speed of sound to a medium with a lower speed of sound, the wavelength of the sound wave will shorten.
Step-by-step explanation:
1. A sound wave is an oscillation of pressure that propagates through a medium.
2. The transition occurs when the sound wave moves from one medium to another.
3. The speed of sound in each medium depends on the medium's properties (density, elasticity, etc.).
4. If the sound wave moves from a medium with a higher speed of sound to a medium with a lower speed of sound, the wavelength will shorten.
5. This shortening occurs because the wave's frequency remains constant, and since the speed of sound has decreased, the wavelength must also decrease to maintain the relationship: speed = wavelength × frequency.

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Answer:

answer = 23 uF

Answer:

North east

Explanation:

The distance travelled by a plane from one point to another is the shortest distance between the two points. This distance travelled is usually a straight line path from point 1 to point 2.

Since the plane ends up 220 km farther east and 100.0 km farther north, the direction of flight for the plane is in the North-East direction.

Let x represent the distance travelled by the plane. Hence:

x² = 100² + 220²

x² = 58400

x = 241.66 km

To find the temperature at which the rate constant is equal to 0.08732 sec⁻¹, we can use the Arrhenius equation and solve for temperature (in Celsius).

The Arrhenius equation relates the rate constant (k) of a chemical reaction to the temperature (T), activation energy (Ea), and the frequency factor (a). It is given by:

k = a * e^(-Ea / (R * T))

Where:

k = rate constant

a = frequency factor

Ea = activation energy

R = gas constant (8.314 J/(mol*K))

T = temperature in Kelvin

To find the temperature (T) at which the rate constant is 0.08732 sec⁻¹, we rearrange the equation as follows:

T = (-Ea / (R * ln(k / a)))

Substitute the given values:

T = (-89.4 kJ / (8.314 J/(mol*K) * ln(0.08732 sec⁻¹ / 7.28 x 10^10 sec⁻¹)))

First, convert Ea to J/mol:

Ea = 89.4 kJ * 1000 J / 1 kJ / (1 mol)

Next, calculate the natural logarithm of the ratio:

ln(0.08732 sec⁻¹ / 7.28 x 10^10 sec⁻¹)

Finally, plug in all the values and calculate T in Kelvin. To convert the temperature to Celsius, subtract 273.15 from the Kelvin value.

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The modern-day name for cathode rays is "electron beams." Cathode rays were initially discovered and studied in the late 19th century and were found to be streams of negatively charged particles.

It was later determined that these particles were actually electrons, which are fundamental subatomic particles with a negative charge.

The term "cathode rays" has largely been replaced by the more accurate and descriptive term "electron beams" in modern scientific terminology.

Electron beams are widely used in various fields, including electron microscopy, television technology, particle accelerators, and many other applications in science and industry.

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Energy is most evident or most easily observed when it is either being transferred or transformed. The change from potential to kinetic energy when an object falls off a ledge, the heat coming off an engine, are both examples of when energy is being transformed.

Answer:

Explanation:

K.E=1/2mv²

22=1/2 0.223 v²

v²=197.3

v=14.04 m/s

7.7µW/m^2 is  the intensity at a point that is at an angle of 2.06° from the center of the central fringe

Define  double-slit experiment

The double-slit experiment demonstrates the basic probabilistic structure of quantum mechanical processes while also showing that light and matter can exhibit traits of both classically defined waves and particles.

The power transferred per unit area is known as the intensity or flux of radiant energy, where the area is measured on a plane perpendicular to the direction of the energy's propagation.

I ⇒ 1/2*I1 *cos2.06

I1 ⇒ 33 *cos 2.06

I ⇒ 1/2 *33 *cos 2.06 ⇒7.7µW/m^2

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The correct statement regarding potential energy is that "potential energy is the energy that an object has based on its position."

This means that an object has the potential to do work based on its position in relation to other objects or forces. For example, a ball at the top of a hill has potential energy due to its position at the top of the hill, and this potential energy can be converted into kinetic energy as the ball rolls down the hill.

The other statements about potential energy are not true.

Potential energy can be stored and is not immediately converted to kinetic energy.

The potential energy of an object can be determined using the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object.

And finally, an object in motion can still have potential energy, such as a pendulum swinging back and forth.

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Answer:

30MPH

Explanation:

30/5 = 6 x 5 = 30 mph

Answer:

an electromagnet is a metal which has the ability to turn into a magnet on passing electricity through it .

But once the electric flow is withdrawn the circuit breaks and it no more behaves like a magnet.

but this is not so in permanent magnets

Explanation:

thus electromagnet is used in magnetic cranes bcoz their magnetism can be controlled conveniently.

Answer:

The world would have been blown up by now.

Explanation:

Hypothetically, lets say that someone gave Kim Jong boi a cup of coffee.

He gets mad at the "public servant" since it didn't contain 3 posafa43asdunds of sugar which makes him "big".

The public servant claims they added jfoaj4su38093 units of sugar, which is equivalent to 3 posafa43asdunds.

He gets mad and launches big cannons at Trump since he blames Boe Jiden.

The rate of change of the distance between the two particles is 10 units per second.

Let's call the distance between particle A and particle B "d". To find the rate of change of "d", we need to take the derivative of "d" with respect to time. By using the Pythagorean theorem to relate the distance between the two particles to their x and y coordinates:

d^2 = x^2 + y^2

Taking the derivative of both sides with respect to time, we get:

2dd/dt = 2x(dx/dt) + 2y(dy/dt)

where dx/dt is the rate of change of particle A's x-coordinate (which is equal to 2), and dy/dt is the rate of change of particle B's y-coordinate (which is equal to 3).

We need to find x and y in terms of time. Particle A is moving at a constant rate of 2 per second along the positive x-axis, so its x-coordinate is given by:

x = 2t

where t is time in seconds.

Similarly, particle B is moving at a constant rate of 3 per second along the positive y-axis, so its y-coordinate is given by:

y = 3t

Substituting these expressions for x and y into our equation for the rate of change of "d", we get:

2dd/dt = 2(2)(1) + 2(3)(1) = 10

So the rate of change of the distance between the two particles is 10 units per second.

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Answer:

Electromagnetic waves which has higher frequency will have a higher degree of penetration power. Frequency has an indirect relationship with the wavelength. Therefore, Electromagnetic waves which has larger wavelength values will have more penetration power.

Explanation:

hope this helped

The current flowing in each circuit arrangement depends on the total resistance of the circuit.

To calculate the total resistance of each circuit, we can use the formula:

Total Resistance = R1 + R2 + R3

a. To create a current of 1 ampere, we can use the following circuit:

  (check image 1)

b.  To create a current of 2 amperes, we can use the following circuit:

(check image 2)

The total resistance of this circuit is:

1 ohm + 2 ohm + 1 ohm = 4 ohms

Using Ohm's Law, we can calculate the voltage required to create a current of 2 amperes:

V = IR

V = 2A x 4 ohm = 8V

Therefore, we need to connect three batteries in series to create a voltage of 4.5V, and another three batteries in series to create a voltage of 4.5V, and connect both sets of batteries in parallel to create a voltage of 9V.

c. To create a current of 3 amperes, we can use the following circuit:

(check image 3)

The total resistance of this circuit is:

1 ohm + 1 ohm + 1 ohm = 3 ohms

Using Ohm's Law, we can calculate the voltage required to create a current of 3 amperes:

V = IR

V = 3A x 3 ohm = 9V

Therefore, we need to connect all four batteries in series to create a voltage of 6V, and then connect two sets of these batteries in parallel to create a voltage of 12V.

d. To create a current of 6 amperes, we cannot use these components as they will create a circuit with a total resistance of less than 0.25 ohms, which will exceed the maximum current that can flow through the components and may damage them. In order to create a circuit with a higher resistance that can handle a current of 6 amperes, we would need to add additional resistors in series with the bulbs.

For example, we could add a 1 ohm resistor in series with the 3 ohm bulb to create a circuit with a total resistance of 7 ohms:

(check image 4)

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Answer:

8.5 kg

Explanation:

F = ma

34 N = m(4.0m/s^2)

m = 8.5 kg

The process by which a change in membrane voltage leads to the opening of calcium (Ca2+) channels. The opening of the Ca2+ channels allows for the release of Ca2+ ions from the sarcoplasmic reticulum into the cytoplasm of the cell.

A change in membrane voltage that travels down the t-tubule is known as an action potential. This action potential triggers the opening of Ca2+ channels in the sarcoplasmic reticulum, which causes Ca2+ to be released into the cytoplasm. This Ca2+ then binds to troponin, causing a conformational change in the tropomyosin filament, which allows for the myosin head to bind to the actin filament and initiate muscle contraction. Overall, this process involves a series of complex interactions and is critical for muscle function and movement.


The change in membrane voltage occurs due to an action potential, which is an electrical signal that propagates along the membrane of a neuron or muscle cell. When the action potential reaches the T-tubules (transverse tubules), it travels down these tube-like structures that extend into the cell, allowing for a rapid and uniform spread of the signal. The T-tubules are closely associated with the sarcoplasmic reticulum (SR), a specialized organelle responsible for the storage and release of calcium ions (Ca2+). As the action potential travels down the T-tubules, it causes the voltage-gated Ca2+ channels on the SR to open. These channels, known as L-type or dihydropyridine (DHPR) receptors, are essential for the regulation of Ca2+ release.

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Answer:

770.1 m

Explanation:

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

Velocity (v) = 45.3 m/s

Time (t) = 17 s

Displacement (d) =?

Velocity is defined according to the following formula:

Velocity = Displacement /Time

With the above formula, we can obtain the displacement of the ball as follow:

Velocity = Displacement /Time

45.3 = Displacement / 17

Cross multiply

Displacement = 45.3 × 17

Displacement = 770.1 m

Therefore the displacement of the ball is 770.1 m

Answer: 770.1     gravity multiplied by time

Answer:I think it would be 0

Explanation:

Both are pushing with 100n therefore it will not move

The answers to your questions are as written below:

A negatively charged molecule move inwards when placed in an electric field while positively charged molecule placed in a electric field will move outwards the electric field.

A neutral/uncharged molecule will remains still when placd in an elctric field due to the absence of charges.

Hence we can concude that the answers to your questions are as listed above.

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attached below is the missing image

Sir isaac Newton made a connection between the mass of an object and the distance between them.

According to Newton's law of universal gravitation, every object in the universe attracts each other with a force directly proportional to the product of the masses of the object and inversely proportional to the distance between the two objects.

\(F = \frac{Gm_1m_2}{R^2}\)

where;

Thus, we can conclude that Sir isaac Newton made a connection between the mass of an object and the distance between them.

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Hi there!

We can begin solving for the work necessary using the following:

\(W = \Delta U = mg\Delta h\)

W = Work (J)

Δh = change in height (10 m)
m = mass (75 kg)
g = acceleration due to gravity (9.8 m/s²)

Plug in the givens:

\(W = 75 \cdot 9.8 \cdot 10 = 7350 J\)

Now, we can solve for power with this equation:
\(\large\boxed{P = \frac{W}{t}}\)

P = Power (Watts)

W = Work (J)
t = time (s)

Plug in the values:

\(P = \frac{7350}{25} = \boxed{294 W}\)