a parallel plate capacitor with air between the plates is charged and then disconnected from the source of emf. if the space between the plates is now filled with a dielectric, what happens to the capacitance of the capacitor and the magnitude of the electric field between the plates? capacitance (a) increases (b) increases (c) increases (d) decreases (e) decreases magnitude of the electric field increases remains constant decreases increases decreases

If gravity is unimportant and the value of h (Hubble constant) is 75 km/sec/mpc, the estimated age of the universe using the Hubble constant would be approximately 13.8 billion years.

The Hubble constant (h) represents the rate at which the universe is expanding. By assuming gravity to be unimportant, the age of the universe can be estimated using the Hubble constant. The formula for calculating the age of the universe is 1/h, where h is measured in units of km/sec/mpc (kilometers per second per megaparsec). With a given Hubble constant of 75 km/sec/mpc, the estimated age would be approximately 1/75 billion years, which is roughly 13.8 billion years. This estimate is based on the assumption of a constant rate of expansion throughout the history of the universe and provides a rough approximation of its age.

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Answer:

C) 10000 J

Explanation:

∆p.e =mg∆h

= 2000 × 5

= 10000J

The velocity of an object will be the same as 30 m/s speed if there is a one-dimensional motion.

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is traveling along a path.

The concept of velocity and what we typically refer to as speed are nearly identical in one dimension. The idea of speed that we typically employ in reference to a moving vehicle aligns exactly with the measurement of an object's speed (relative to some fixed reference frame).

Therefore, if an object moves in one dimension, its velocity will be equal to 30 m/s speed.

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Orion can be seen from most places in the world at some point during the year but is not seen from the same place all year long because the earth orbits the sun which result in changes in the night view.

This is referred to as a prominent constellation located on the celestial equator and visible throughout the world ans it is the most conspicuous in the night sky.

This is therefore the reason why it can be seen from most places in the world at some point during the year. During some periods, it is not seen from the same place all year long because the earth orbits the sun which result in changes in the night view and hinders people from seeing it.

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To determine the reject rate (RR) for each scenario, we need to consider the capability indices Cp and Cpk along with the specifications for tensile strength. The reject rate represents the proportion of parts that do not meet the specifications.

1. RR = 0.27%

2. RR = 16.03%

3. RR = 0%

4. RR = 0.003%

5. RR = 0.27%

6. RR = 2.28%

7. RR = 29.93%

8. RR = 0%

9. RR = 5.87%

Please note that these calculations assume a normal distribution of tensile strength and that the process is in statistical control. The reject rate is obtained by evaluating the proportion of values falling outside the specified limits based on the process capability indices Cp and Cpk.

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Answer:1

Explanation:1

The magnitude of the resultant vector is 81.5 m and the direction is 41.3 degrees with respect to the x-axis.

To find the magnitude of the resultant vector, we use the law of cosines: c^2 = a^2 + b^2 - 2ab * cos(C),

where a = 66.0 m, b = 40.0 m, and C = 180 - (28 + 56) = 96 degrees.

Plugging in these values, we get c^2 = 66.0^2 + 40.0^2 - 2 * 66.0 * 40.0 * cos(96).

Solving for c, we find c ≈ 81.5 m.

To find the direction of the resultant vector, we use the law of sines: sin(A)/a = sin(B)/b = sin(C)/c, where A is the angle opposite to side a, B is the angle opposite to side b, and C is the angle opposite to side c.

In this case, we want to find angle A.

Plugging in the values, we get sin(A)/66.0 = sin(96)/81.5.

Solving for sin(A), we find sin(A) ≈ (66.0 * sin(96))/81.5.

Taking the inverse sine of this value, we find A ≈ 41.3 degrees.

Therefore, the direction of the resultant vector is 41.3 degrees with respect to the x-axis.

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Answer:

Volume

Explanation:

,,,,,,,,,,,,,,,,,,,

When a man pushes a box across a floor, as he increases the force he applies horizontally to the box, then the kinetic friction remains the same.

To find the answer, we need to know about friction.

Thus, we can conclude that, kinetic friction remains the same when we increase the applied force.

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As a guy pushes a box across a floor, the kinetic friction stays constant no matter how much force is applied on the box horizontally.

We must understand friction if we are to find the solution.

We can therefore draw the conclusion that kinetic friction does not change as the applied force is increased.

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Answer:

\(8.5\frac{m}{s}\)

Explanation:

Use Kinematics:

\(v = v_0 + at\)

\(v = 3 + 1.1 * 5\)

\(v = 8.5 \frac{m}{s}\)

The gravitational force Mrs. Young exerts on her computer is approximately 0.0044 Newtons.

What is computer ?

Computer is an electronic device that is used to process data, store information, and perform various operations such as calculations, communications, and data processing. It is composed of a combination of hardware and software components that enable it to store, retrieve, and manipulate data.

Computer technology has revolutionized the way we communicate, work, and live. It has opened up new possibilities for businesses, education, and entertainment. Computers have become an essential part of our lives, and their use is only expected to grow in the future.

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The half-life of 40K is approximately 1.3 billion years. Given a ratio of 40Ar/40K as 3/1 in a granite sample, we can estimate the age of the sample by understanding the decay process.  Based on the given 40Ar/40K ratio, the age of the sample is approximately 650 million years.

Since the half-life of 40K is 1.3 billion years, this means that after each half-life, half of the 40K atoms will have decayed into 40Ar. Therefore, if the ratio of 40Ar/40K is 3/1, it suggests that three-quarters (or 75%) of the original 40K atoms have decayed into 40Ar.

To determine the age, we can calculate the number of half-lives that have occurred based on the remaining 25% of 40K. Since each half-life is 1.3 billion years, dividing the remaining 25% by 50% (half) gives us 0.5. Thus, the sample has undergone 0.5 half-lives.

Multiplying 0.5 by the half-life of 1.3 billion years gives us an estimated age of 0.65 billion years, or 650 million years, for the granite sample.

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The longest "standing wave" on a fixed string is known as the fundamental mode or the first harmonic. In this mode, the string forms a single loop with an antinode in the middle and nodes at both ends. The wave pattern appears as a single half-wavelength.

If we denote the length of the string as L, the wavelength (λ) of the longest-standing wave in the fundamental mode is equal to twice the length of the string (2L). In other words, the wavelength of the wave is exactly two times the length of the string. To visualize this, imagine a string fixed at both ends and vibrating in its fundamental mode. The wave pattern will exhibit a single loop (one-half of a wavelength) spanning the entire length of the string. The antinode will be positioned in the middle of the string, while the nodes will be located at the fixed ends. In summary, for the longest "standing wave" on a fixed string (fundamental mode), the wavelength is twice the length of the string.

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Answer:

horrible, but how about you?

Explanation:

Answer:

Some examples of external stressors include:

Major life changes. These changes can be positive, such as a new marriage, a planned pregnancy, a promotion or a new house. ...

Environment. The input from the world around us can be a source of stress. ...

Unpredictable events.

Workplace.

Social.

Explanation:

During the initial part of the ball's motion, as it moves upwards, its velocity vector points upwards and its acceleration vector points downwards.
When the ball is thrown straight upwards, the velocity vector points upwards, as the ball has upward velocity. However, the upward velocity is decreasing due to the acceleration vector, which points downward because of gravity. This downward acceleration vector opposes the upward motion, causing the upward velocity to decrease until the ball reaches its peak and begins to fall back down.

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Answer:

one billion to ten billion joules.

Explanation:

To keep a 100-watt light bulb going for one second, one hundred joules of energy will be used.

Answer:

In 3 lightning bolts, there is approximately 1 billion to ten billion joules.

Explanation:

Answer:True

Explanation:

The necessary gauge pressure in the water mains is approximately 70 kPa (10 psi).

The pressure necessary in the water mains to spray water to a height of 45 mm depends on factors such as the diameter of the hose, the length of the hose, the type of nozzle used, and the specific gravity of water.

Assuming the hose is of a standard size (e.g. 1.5 inch diameter) and the nozzle is designed for a nozzle pressure of 70 psi, then the pressure necessary in the water mains would be 70 psi + the pressure required to push the water 45 mm (1.8 inches) up the hose.

To calculate the pressure required, we use Bernoulli's equation:

P1 + (1/2)*ρ*V1^2 = P2 + (1/2)*ρ*V2^2

Where P is the pressure, ρ is the density of water, and V is the velocity of the water.

Assuming the velocity of the water at the nozzle is 10 m/s, and the density of water is 1000 kg/m^3, then the pressure necessary in the water mains to spray water to a height of 45 mm is 90 psi.

P1 + (1/2)*1000*10^2

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Answer:

the surface of the earth would've already turned into a very hot liquid water to even exist and there would be no existence of humans on earth

Answer:

D. The Acceleration of object A is twice that of Object B.

This is because a force pushing on something light will move faster than an equally strong force pushing on something heavier.

Answer: c. The electric force increases

Explanation:

If the distance between two charged particles decreases, the electric force between them increases.

According to Coulomb's Law, the electric force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, the equation can be represented as:

F = k * (q1 * q2) / r^2

Where:

F represents the electric force between the particles.

k is the electrostatic constant.

q1 and q2 are the charges of the particles.

r is the distance between the particles.

As the distance (r) between the particles decreases, the denominator of the equation (r^2) becomes smaller, causing the overall electric force (F) to increase. Conversely, if the distance between the charged particles increases, the electric force between them decreases. This inverse relationship between the distance and electric force is a fundamental characteristic of the electrostatic interaction between charged objects.

Answer:

See below

Explanation:

For the, just remember the equation

F = m a

1000 N = 1980 kg  * a

1000/1980 = a = .505 m/s^2

Answer:

UP

Explanation:

heat rises. That powers convection which is in the link

Answer:

usualy heat moves upwards.

Explanation:

This is due to the fact that there is more empty space higher up, which means that molecules moving at high speeds have more room to move, because there are fewer molecules up there. In the (hence the name) THERMOsphere temperatures can reach 1600 *F I am pretty sure.

The work done by nonconservative forces is equal to the initial kinetic energy: Work done by nonconservative forces = -56,576,000 J

To find the work done by nonconservative forces in stopping the plane, we need to first find the plane's initial kinetic energy.
The formula for kinetic energy is KE = 1/2mv^2, where m is the mass of the object and v is its velocity.
Plugging in the values given in the question, we get:
KE = 1/2 (22,000 kg) (64 m/s)^2
KE = 56,576,000 J
So the initial kinetic energy of the plane is 56,576,000 J.
To stop the plane, nonconservative forces such as friction and air resistance must act upon it. These forces will do negative work, removing energy from the system.
The work done by nonconservative forces can be found using the work-energy principle, which states that the net work done on an object is equal to its change in kinetic energy.
Since the plane is coming to a stop, its final kinetic energy is zero. Therefore, the work done by nonconservative forces is equal to the initial kinetic energy:
Work done by nonconservative forces = -56,576,000 J
Note that the negative sign indicates that the nonconservative forces did negative work, removing energy from the system.

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The ideal mechanical advantage will be 8.017. The ideal mechanical advantage value may be grater than the actual value of mechanical advantage.

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of  forces in levers and pulley.

The ideal mechanical advantage is found as;

\(\rm IMA = \frac{d \pi}{l} \\\\ \rm IMA = \frac{0.812 \times \pi}{0.318} \\\\ IMA=8.017\)

The ideal mechanical advantage will be 8.017.

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