A capacitor has plates of area8.89 x 10-4 m2. To create acapacitance of 1.11 x 10-8 F, howfar apart should the plates be?[?][?] × 10¹²¹ m

Answer:

2 J

Explanation:

Work = change in energy

W = ΔKE

W = ½ mv²

W = ½ (100 kg) (0.2 m/s)²

W = 2 J

Answer:

4Nm

Explanation:

Work done is force times distance.

The force is given as mass x (speed )^2 / raduis . Expressed mathematically we have ;

Mv^2/r

Then for the slightest measurable distance r we have: the work done as;

Mv^2/r × r

= Mv^2

= 100 × 0.2 × 0.2= 4Nm

When acceleration is equal to zero average velocity and the instantaneous velocity vectors are identical.

Types of velocity

Velocity is defined as the rate of displacement of an object with respect to time. It is measured in meter/ seconds and is a vector quantity.

Acceleration is defined as the rate at which velocity changes with time.

There are two types of velocity which includes:

Average velocity: This is the average rate of change of position of particles with respect to time over an interval.

Instantaneous velocity: This is defined as the specific rate of change of position with respect to time at a particular point.

The situation that will make the average velocity and the instantaneous velocity vectors to be equal or identical is when acceleration is equal to zero.

Raju's statement is not correct fully as it states that uniform motion is seen only in objects traveling in a straight line while ,Tejas is correct in pointing out that uniform motion can also be observed in objects traveling in circular motion. 

Uniform motion refers to the movement of an object at a constant speed in a particular direction. In this type of motion, the object covers equal distances in equal intervals of time. Suppose for example (straight line movement), a car moving on a straight road at a constant speed of 60 km/h. If the car maintains this speed without any change in direction, it exhibits uniform motion. Other example is regarding the object moving in circular path where  a race car driving around a circular track with a radius of 100 meters. If the car maintains a constant speed of 40 meters per second and completes each lap in the same amount of time, it exhibits uniform motion. Therefore, Tejas' justification is valid, as he states that uniform motion can indeed be observed in objects traveling in circular paths, in addition to objects moving in straight lines.

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the Given

*The number of mol of neon is n = 1 mol.

*The temperature of the neon gas is T = 288 K.

*The mass of the neon gas is m = 0.01 kg.

*The gas constant R is R = 8.31 J/(mol.K).

To find: The average velocity of atoms of neon (v).

According to the given equation,

Substitute the known values.

The average velocity of atoms of neon is 847.33 m/s. Thus, option (A) is the correct answer.

Answer:

As the parallel rays coming from the object converge at the principal focus, F of a concave mirror; after reflection through it. Therefore, when the object is at infinity the image will form at F. Properties of the image formed: Point-sized image, highly diminished in size.

At Infinity: At focus (F)

Position of object: Position of image

Between F and C: Beyond C

Beyond C: Between F and C

Explanation:

This is because when the object is at infinity, the incident rays are parallel to the principal axis. Hence the image is formed at the focus. And the image is real and inverted but in diminished size.

Shortage of wood and the abundance of convenient coal deposits and Commercial-minded aristocracy of the great Britain changed the science of forces.

Britain attempted to keep its manufacturing processes a secret, but people came to learn about them and brought the knowledge home with them.

Sometimes they used rowboats to smuggle the machines to nearby nations. Belgium, Switzerland, France, and the states that would become Germany were the first nations after Britain to build factories and railroads. Industrialization proven to require the establishment of a national train network. Switzerland's railroads were built in 1847, Belgium's in 1834, France's in 1842, and Germany's in the 1850s.

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Given what we know, we can confirm that when dealing with a closed and isolated system, the forces to be considered in the system are internal forces.

Therefore, we can confirm that because a closed system is one that does not interact with the environment or its surroundings, any forces to be considered will be internal in nature.

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Based on the diagram, the correct statement is: Government and consumers make economic decisions in a mixed economy, while consumers make economic decisions in a market economy.

In a mixed economy, economic decisions are made by both the government and consumers.

The government plays a significant role in regulating and influencing economic activities through policies, regulations, and interventions.

In market economy, economic decisions are primarily made by consumers. The market forces of supply and demand dictate the allocation of resources, production levels, and pricing.

The freedom to buy and sell whatever they choose is what ultimately determines how commodities and services are produced and distributed.

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Answer:

good luck!!! sorry I just needed the points xoxo

Explanation:

umm yeah no sorry I tried

Answer:

did u know there's no such thing as "pear cider."

Explanation:

Answer:

0.0512 kJ

Explanation:

From the given information, since the values were not given:

Then, Let assume that:

A set of 50 titanium rods is handled by the engineer, with 50cm length and 20g of mass.

The overhead walkway = 5.3 m

In this process, 12 rods roll of the walkway

We are to determine the change in the Gravitational P.E

Change in P.E = final P.E- initial P.E

Change in P.E = (50 mgh) - (0)

Change in P.E =  \((50\times \dfrac{20}{1000}\times 9.8 \times 5.3 )-0\)

Change in P.E =  51.94 Joules

Change in P.E = 0.05194 Joules

Change in P.E ≅ 0.0512 kJ

The most logical explanation is the incandescent bulb produces more forms of energy than just light, like heat.

The principle of conservation of energy can be used to explain to reason behind the more energy required for an incandescent bulb to produce the same light as a fluorescent light bulb.

Some part of the energy required by the incandescent bulb is used to produce light while some is used to generate heat.

For fluorescent light bulb, all the energy are used to produce light, leading to a better efficiency and less energy required to produce same amout light as  incandescent bulb.

Thus, the most logical explanation is the incandescent bulb produces more forms of energy than just light, like heat.

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Answer:

Explanation:

velocity of wave in a tense wire is given by the expression

\(v= \sqrt{\frac{T}{m} }\)

v is velocity . T is tension and m is mass per unit length .

for steel wire

m = π r² ρ where r is radius and ρ is density

= 3.14 x (5.3 x 10⁻⁴)²x7.75 x 10³

= 683.57 x 10⁻⁵ kg/m

v =  \(\sqrt{\frac{148}{683.57\times 10^{-5}} }\)

= 1.47 x 10² m /s

= 147 m /s

for iron  wire

m = π r² ρ where r is radius and ρ is density

= 3.14 x (5.3 x 10⁻⁴)²x7.86 x 10³

= 693.27 x 10⁻⁵ kg/m

\(v = \sqrt{\frac{148}{693.27\times 10^{-5}} }\)

= 146 m /s

Time taken to move from one end to another

= 17.7 / 147 + 28.5 / 146

= .12 + .195

= .315 s .

Answer:

Explanation:

When discussing Newton's laws of motion, the most likely used terms when talking about Newton's third law of motion are action and reaction. According to this law, for every action there is an equal and opposite reaction

Answer: C. "action" and "reaction"

Explanation: Newtons 3rd law of motion: for every action, there is an equal and opposite reaction (action and reaction forces are described by this law).

Have a nice day. :)

Answer:

tectonic plate movement

Explanation:

The total distance traveled by Kirsten for the duration of 70 seconds is 92.5 metres and the final velocity is 2.2 m/s.

Uniform motion refers to the movement of the body in which it travels equal distance in equal interval of time.

Given:

For 60 seconds Kristen walks at the constant speed of 1.3m/s

For the next 10 seconds she walks with an acceleration of 0.09

Final speed of Kristen can be calculated using Newton's first law of motion

v = u + at

On substituting values we get,

Final speed of Kristen = 1.3+0.09×10

Final speed of Kristen = 2.2m/s

First we will find distance traveled by Kristen for the initial 60 seconds.

Since the motion is uniform we can use the speed distance formula.

Distance = speed × time

Distance traveled by Kristen for the initial 60 seconds = 1.3×60

Distance traveled by Kristen for the initial 60 seconds= 78 metre

Now for the next 10 seconds we will use Newton's third law of motion

Ok substituting values we get

Distance traveled by Kristen for next 10 seconds = 17.5 metre

The total distance traveled by Kirsten for the duration of 70 seconds is 92.5 metres.

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Answer:

\(a=2.14\ m/s^2\)

Explanation:

Force in upward direction = 45 N

Force in right side = 60 N

Mass of the object, m = 35 kg

Net force on the object is given by :

\(F=\sqrt{45^2+60^2} \\F=75\ N\)

We know that,

F = ma

Where

a is acceleration of the object

\(a=\dfrac{F}{m}\\\\a=\dfrac{75\ N}{35\ kg}\\\\a=2.14\ m/s^2\)

So, the acceleration of the object is \(2.14\ m/s^2\).

Answer: It should be the answer beginning like this

The linear spread is that

The radial acceleration of locations along the blade's outer edge is approximately 17580 \(m/s^2\).

Radial acceleration describes the acceleration of an object travelling on a circular path towards the circle's center. It can be defined as the rate of change of tangential velocity with regard to time and is also known as centripetal acceleration.

Given:

We know that the motor is rotating at 3450 rev/min. One revolution is equal to 2π radians, so we can convert the motor speed to radians per minute:

ω₁ = (3450 rev/min) x (2π rad/rev) = 21675π rad/min

The second pulley is half the diameter of the first pulley, so its angular speed, ω₂, is twice that of ω₁:

ω₂ = 2ω₁ = 43350π rad/min

The circular saw blade is mounted on the same shaft as the second pulley, so it also rotates at the same angular speed:

ω = ω₂ = 43350π rad/min

We can now calculate the linear speed of the small piece of wood moving at the same rate as the rim of the circular saw blade, indicated by v. The circumference of the circle is supplied by the rim of the circular saw blade:

C = πd = π(0.208 m) = 0.6548 m

The linear speed of the little piece of wood is equal to the tangential speed of the circular saw blade's rim:

v = ωr

where r is the circular saw blade's radius, given by half its diameter:

r = d/2 = 0.208/2 = 0.104 m

By substituting the values, we obtain:

v = r = (43350 rad/min) x (0.104 m) x (1/60) = approx. 23.0 m/s

As a result, the linear speed of the little piece of wood moving at the same rate as the rim of the circular saw blade is about 23.0 m/s.

Next, compute the radial acceleration of locations on the blade's outer edge, represented by. The radial acceleration is calculated as follows:

α = rω²

By substituting the values, we obtain:

r2 = (0.104 m) x (43350 rad/min)2 x (1/602) = 17580 m/s2 (approximate)

Therefore, the radial acceleration of points on the outer edge of the blade is approximately 17580 m/s². This high radial acceleration explains why sawdust doesn't stick to the teeth of the saw blade.

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Your question is incomplete, most probably the complete question is:

The motor of a table saw is rotating at 3450{\rm rev/min}. A pulley attached to the motor shaft drives a second pulley of half the diameter by means of a V-belt. A circular saw blade of diameter 0.208{\rm m}is mounted on the same rotating shaft as the second pulley.

The operator is careless and the blade catches and throws back a small piece of wood. This piece of wood moves with linear speed equal to the tangential speed of the rim of the blade. What is this speed?

v =_______________________ m/s

Calculate the radial acceleration of points on the outer edge of the blade to see why sawdust doesn't stick to its teeth.

\alpha=______________________m/s2

Answer:

T= In(2)/___ =__ In(2)

Explanation:

the equation pices arnt on the keyboard so i put the blanks

sorry

jope it helps some. Have a good day ir night! :)

Explanation:

∆x=300 m×2

∆t=1.5 s

v=∆x/∆t → v=2×300/1.5 = 400 m/s

Answer:

19.3 m/s

Explanation:

Considering that no initial velocity was imparted to the hamburger, then we can use the distance covered formula for motion under constant acceleration (that of gravity) and solve for the time it took to reach the ground.

D = vi * t + (1/2) a * t^2

in our case

19 = 0 + 4.9 t^2

t^2 = 19/4.9

then t is approximately 1.97 seconds

We now use this time information in the equation for velocity under accelerated motion (due to gravity)

Vf = Vi + g * t

For our case:

Vf = 0 + 9.8 * 1.97 = 19.3 m/s

Answer:

Explanation:

a = F/m

a = 30/5

a = 6 m/s²

Answer:

Acceleration is 6 meters per square seconds.

Explanation:

Data:

Use formula:

Replace:

Solve the division, remember remember that N / kg is equal to m/s²:

1. The maximum height above its launch level is 1.45 m

2. The time of flight of the ball is 1.1 s

1. How do I determine the maximum height?

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

The maximum height can be obatianed as follow:

H = u²Sine²θ / 2g

H = [5.5² × (Sine 76)²] / (2 × 9.8)

Maximum height = 1.45 m

How do I determine the time of flight?

The time of flight of the ball can be obtained as follow:

T = 2uSineθ / g

T = [2 × 5.5 × Sine 76] / 9.8

Time of flight = 1.1 s

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Answer:

thymine

Explanation:

The nitrogen base found only in DNA is known as thymine which is also called 5-methyl uracil as thymine is a derivative of uracil.

With the use of formula, The plane should rotate at the speed of 3 m/s

When a body is moving rotationally at a point, the motion is said to be a circular motion. There are two types of motion in a circle

Given that a 3 kg toy plane is attached to a 1.8 m string that it can be whirled around in a horizontal circle above the users head rotates.

The given parameters are:

mass m = 3 kg

Length L = 1.8 m = radius

Force F = 10 N

Velocity V = ?

If one’s exerts a force of 10 N on the string, The speed the plane should have can be calculated by using the below formula

F = M\(V^{2}\) / r

Substitute all the parameters into the formula

10 = 3 x \(V^{2}\)  / 1.8

Cross multiply

18 = 3\(V^{2}\)

\(V^{2}\) = 18/3

\(V^{2}\) = 9

V = \(\sqrt{9}\)

V = 3 m/s

Therefore, The plane should rotate at the speed of 3 m/s

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Answer:

It will be dimmer than before

Answer:For parallel connection,the brightness would be dimmer, while for series connection it would be brighter

Explanation:

For parallel connection,resistance and brightness are inversely proportional.meaning as resistance increases, brightness decreases.

For series connection,resistance and brightness are directly proportional. Meaning as the resistance increases, brightness also increases.

The time required to crumple the barrier and safely slow down the person with a force of 1650 N is approximately C, 1.1 seconds.

To determine the time required to crumple the barrier and safely slow down the person with a maximum force of 1650 N, use the equation of motion:

F = m × a

where:

F = force

m = mass

a = acceleration

Given:

m = 68 kg

F = 1650 N

Find the acceleration (a) first. Rearranging the equation:

a = F / m

Substituting the values:

a = 1650 N / 68 kg

a ≈ 24.26 m/s²

Now, use the equation of motion to find the time (t):

v = u + at

where:

v = final velocity (0 m/s as the person comes to a stop)

u = initial velocity (27 m/s)

a = acceleration (24.26 m/s²)

t = time

Rearranging the equation:

t = (v - u) / a

Substituting the values:

t = (0 m/s - 27 m/s) / 24.26 m/s²

t ≈ -27 m/s / 24.26 m/s²

t ≈ -1.11 s

The negative sign indicates that the time is in the opposite direction to the initial velocity. Taking the absolute value, the time required to crumple the barrier and safely slow down the person with a force of 1650 N is approximately 1.11 seconds.

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Answer: the moon is closer.

Explanation:

The moon is closer to the earth than the sun, which results in a larger gravitational gradient for the moon even though the sun is considerably more massive and has stronger overall gravity than the moon.

If the dog walked at a constant speed the whole way, the graph of the dog's position versus time would be a straight line. This is because the dog's velocity (which is the derivative of position with respect to time) would be constant, and the acceleration (which is the derivative of velocity with respect to time) would be zero.

A straight line on a position-time graph indicates that the object is moving at a constant velocity. The slope of the line would be equal to the velocity of the dog.

If the graph is a horizontal line, it would indicate that the dog is at rest. If the line slopes upward, the dog is moving in the positive direction (for example, to the right in a position-time graph), and if the line slopes downward, the dog is moving in the negative direction.

In all, A constant speed means a constant velocity and the line is a straight line with a particular slope.

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