A 5. 0-cm-diameter coil has 20 turns and a resistance of 0. 50ω. A magnetic field perpendicular to the coil is B=0. 020t + 0. 010t2, where B is in tesla and t is in seconds.

- Find an expression for the induced current I(t) as a function of time.

- Express your answer in terms of the variable t.

- Evaluate I at t=10s.

- Express your answer using two significant figures

Answer:

As its speed increases.......

The kinetic energy of an object increases as its speed increases. So, option B.

The type of energy that an object possesses as a result of its motion is called kinetic energy.

The kinetic energy of an object is described as the amount of effort required to accelerate a body of a specific mass from rest to its specified velocity.

The body keeps its kinetic energy after gaining it during acceleration, barring changes in speed.

When slowing down from its current pace to a condition of rest, the body expends the same amount of energy.

A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

The kinetic energy of the object,

KE = 1/mv²

where m is the mass and v is the speed of the object.

Since, the mass is a constant, the increase in speed can increase the kinetic energy of the object.

Hence,

The kinetic energy of an object increases as its speed increases.

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No option , The curler apply to the stone to bring it up to speed is  42.85 N.

F = 20*3/1.4 = 42.85 N

3 *3 = 2*u*9.8*40

u = 0.0114

Despite their similarities, distance and displacement have very different meanings, as do speed and velocity. Speed, a scalar quantity, describes "how quickly an object is travelling." You can think of speed as the rate at which an object travels a distance. An object moving quickly has a high speed and travels a fair distance in a brief period of time. In contrast, a slow-moving object travels a comparatively short distance in the same amount of time because of its low speed. Zero speed refers to an object that is completely stationary.

[Speed = Distance Time] is the general formula for calculating an object's speed. The SI speed unit is m/s.

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The equation that represent the line is 9x - 12 y =32

We are given that ,

x₁ = 4,  y₁= 1/3 , m = 3/4

Where,

m = slope of the line

Then the equation of line can be given as,

(y - y₁) = m (x - x₁)

3y -1 = 9/4 (x-4)

12 y - 4 = 9x - 36

9x - 12y = - 4 + 36

9x - 12y = 32

note- the given questions is incomplete therefore the complete question is,

Which equation represents a line that passes through (4, 1/3) and has a slope of 3/4

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The new mAs value to maintain optical density for the given parameters is approximately 1.2 mAs.

To find the new mAs value to maintain optical density for the given parameters, use the following formula:

mAs₁/mAs₂ = (RS₂/RS₁) × (SID₂² / SID₁²) × (GCF₁ / GCF₂)

Where:

mAs₁ = initial mAs value (200 mA × 200 ms = 40 mAs)

mAs₂ = new mAs value (?)

RS₁ = initial grid ratio (6:1)

RS₂ = new grid ratio (16:1)

SID₁ = initial source-to-image distance (100 cm)

SID₂ = new source-to-image distance (200 cm)

GCF₁ = initial grid conversion factor (calculated as 1 + (grid ratio - 1) × (object-to-focus distance / SID))

GCF₂ = new grid conversion factor (calculated using the same formula with the new grid ratio and object-to-focus distance)

Let's calculate the new mAs value:

GCF₁ = 1 + (6 - 1) × (100 / 100) = 2

GCF₂ = 1 + (16 - 1) × (100 / 200) = 1.5

mAs₁/mAs₂ = (150/75) × (200² / 100²) × (2 / 1.5)

Simplifying the equation:

40/mAs₂ = 2 × 4 × (2/3)

40/mAs₂ = 16/3

Cross-multiplying:

3 × 16 = 40 × mAs₂

48 = 40 × mAs₂

Dividing both sides by 40:

mAs₂ = 48 / 40

mAs₂ = 1.2

Therefore, the new mAs value to maintain optical density for the given parameters is approximately 1.2 mAs.

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Answer:

Increasing the temperature of the rod

Explanation:

The energy (E) of an electronic transition in a Bohr hydrogen atom can be calculated using the formula:

E = -R_H *(1/n_f^2 - 1/n_i^2)

where:

R_H is the Rydberg constant for hydrogen (approximately 2.18 × 10^-18 J),

n_f is the final energy level,

n_i is the initial energy level.

Given:

n_i = 2

n_f = 3

Substituting the values into the formula:

E = - (2.18 × 10^-18 J) * (1/3^2 - 1/2^2)

E = - (2.18 × 10^-18 J) * (1/9 - 1/4)

E = - (2.18 × 10^-18 J) * (4/36 - 9/36)

E = - (2.18 × 10^-18 J) * (-5/36)

E ≈ 3.03 × 10^-19 J

Therefore, the energy required for the electronic transition from n = 2 to n = 3 in a Bohr hydrogen atom is approximately 3.03 × 10^-19 J.

The correct answer is B. 3.0 × 10^-19.

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Answer:

2nd bscause there is a reaction

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 1000 × 9

We have the final answer as

Hope this helps you

Answer:

At 5km/hr; Hypnotist travels with a higher speed.

Explanation:

Let hypnotist be H while Raul be R.

Given the following data;

Distance H = 5km

Time H = 1 hour

Distance R = 5km

Time R = 2 hours

To find the their respective speed;

a. For H;

Speed = distance/time

Speed H = 5/1

Speed H = 5km/hr

b. For R;

Speed = distance/time

Speed R = 5/2

Speed R = 2.5 km/hr

Therefore, hypnotist travels with a higher speed.

The correct reading of the vernier caliper is 7.5 mm.

A vernier caliper is used to measure the diameter of a circular object such as;

The reading of a vernier caliper is obtained by adding the reading of the main scale and vernier scale.

The vernier scale reading is obtained from the smaller scale.

In the diagram given;

The reading of the vernier caliper = (7mm + 0.5 mm) = 7.5 mm.

Thus, the correct reading of the vernier caliper is 7.5 mm.

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Answer:

8.5mm

Explanation:

if you count the lines (on the top part of the caliper) from 0-10 its in between 8 and 9 right? So its not going to be 9, its not at 9. so thats our first part, 8. Then you look at the bottom part of the caliper. looking at all the numbers, the only one lined up is 5. so this means you have a reading of 8.5mm on your vernier caliper. :)

P.S.- I nearly made the mistake of picking A, and when I looked closer I saw it was at 8.5 not 7.5. Im probably to late to help you but for others looking for the right answer im glad i could help you out!

Answer:

force

Explanation:

Force is a push or a pull of an object that causes the object to speed up, slow down, or stay in one place. In other words, a force is what causes an object to move. Friction and gravity are two types of forces that influence how an object moves.

The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.

Electromagnetic radiation consists of waves of electromagnetic field, which propagates through space and carries momentum and electromagnetic radiant energy.

Minimum energy required to knock out an electron from the surface of the metal is called the work function.

As we know that, W= hc/λ

h -- Planck's constant ; c -- Speed of light

and λ is Longest wavelength

Given, work function of sodium metal is 2.28 eV

As 1 eV = 1.6021 * 10^-19 J

=2.28 * 1.6021 * 10^-19

= 3.65 *10^-19 J

W= hc/ λ

3.65 *10^-19 = 6.62 *10^-34 * 3 *10^8/ λ

λ = 5.44 * 10 ^-7m

λ =544 nm

The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.

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Hi there!

(A) The force that the ball exerts on Earth is equal in magnitude to the force that Earth exerts on the ball.

Gravitational force is an example of an action-reaction pair:

\(F_{1,2} = -F_{2,1}\)

Gravitational force is given by the equation:

\(F_g = \frac{Gm_1m_2}{r^2}\)

Plugging in the masses of the Earth and ball, gravitational constant, and radius will result in the SAME GRAVITATIONAL FORCE exerted by both objects on each other.

David Popenoe's research suggests that the weakest families on earth may be found in Western, industrialized nations.

Industrialized countries such as America, France, the United Kingdom, and other Western nations have weaker family values and structures than developing nations, according to David Popenoe's research. The family's crucial role in society's economic, social, and emotional stability has long been recognized by social scientists.

Popenoe's research supports the notion that Western, industrialized societies may be experiencing a family crisis.Popenoe says that family disintegration and weakening is a serious social problem in the Western world. Popenoe's studies found that Western societies, which place a high value on independence, individualism, and personal satisfaction, are at odds with the family's objectives of commitment, obligation, and selflessness.

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Answer:5.45X10^3m

Explanation:So use the formula,v= fλ

3X10^8=5.5X10^4λ what Im saying is divide both and u should get 5454.54m but do sig figs to get answer

Answer:

5.45X10^3m

Explanation:

The price of the printer before tax was approximately $99.97.  Hence, option c (p + 0.06p = 105.97) is the correct equation to solve for the price of the printer before tax.

To explain why, we need to first understand what is happening in the problem. Patricia bought a printer and paid a 6% sales tax on top of the price of the printer. This means that the total amount she paid includes both the price of the printer and the 6% tax.

We can represent the price of the printer before tax as "p", and the amount of sales tax as "0.06p" (since 6% of the price is the tax). So, if we add these two amounts together, we get the total amount Patricia paid:

p + 0.06p = 105.97

Simplifying this equation:

1.06p = 105.97

To find the price of the printer before tax, we need to isolate the variable "p" on one side of the equation. We can do this by dividing both sides by 1.06:

p = 105.97 / 1.06

p ≈ 99.97

So, the price of the printer before tax was approximately $99.97.

In summary, option c (p + 0.06p = 105.97) is the correct equation to solve for the price of the printer before tax.

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Answer: C!! <3

Explanation: (a p e x)

In wireless transmission, the digital signals become weaker as they move away from the source. Hence, option (C) is correct.

Although most people take wireless data transfer for granted, when one stops to think about how it truly works, it does appear miraculous. Of course, there is a scientific explanation that a non-WLAN expert can comprehend.

In essence, the manipulation of radio waves allows for wireless data transmission. These waves are produced by creating electrical pulses in a natural way. Then, in order to transmit sound or data, these radio waves might have their amplitude or frequency altered. This procedure can be enhanced to increase the amount of data that can be communicated and the speed at which it can be transmitted.

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The three product which can be potentially fail considering Load Strength graph and precautionary measure to prevent failure are as below;

Ball Pen:

1. Ink Leakage: One potential failure of a ball pen is ink leakage. This can occur due to poor sealing between the ink reservoir and the ballpoint mechanism. Ink leakage can result in messy hands, stained documents, and reduced functionality of the pen. To prevent this failure, manufacturers can improve the quality control process to ensure proper sealing and use high-quality materials for the pen's components.

2. Ballpoint Jamming: Another failure is ballpoint jamming, where the ball gets stuck and prevents smooth writing. This can be caused by a buildup of dried ink or debris inside the pen's mechanism. To prevent ballpoint jamming, regular cleaning and maintenance of the pen can be recommended. Additionally, manufacturers can design the pen with features that facilitate easy cleaning or provide instructions on how to clear any blockages.

3. Weak Barrel Construction: The barrel of the pen may also be prone to failure if it is weak or brittle. Excessive pressure or rough handling can lead to cracks or breakage, rendering the pen unusable. To prevent this, manufacturers can use durable materials for the pen barrel, such as sturdy plastics or reinforced metal, and perform quality checks to ensure structural integrity.

Room Key:

1. Keycard Malfunction: A potential failure of a room key is a malfunction in its electronic components. This can result in the keycard being unreadable by the door lock system, preventing access to the room. To prevent this failure, regular maintenance and replacement of keycard readers can be implemented. Additionally, guests should be advised to keep their keycards away from magnets and electronic devices that can interfere with the card's functionality.

2. Magnetic Strip Damage: Another failure can occur if the magnetic strip on the keycard gets damaged or demagnetized. This can happen due to exposure to magnetic fields or physical damage. To prevent this failure, keycards can be made more durable with protective coatings or alternative technologies such as RFID. Guests should also be educated on proper handling and storage of keycards to avoid damage.

3. Battery Drain: Some room keys use batteries to power their electronic components. A failure can occur if the battery drains, leading to an inactive keycard. To prevent this, low-power consumption designs can be implemented, and regular battery checks or replacements can be carried out by hotel staff. Guests should be informed about the importance of returning the keycard to the front desk for recycling or proper disposal to ensure the battery is replaced as needed.

Blender:

1. Motor Burnout: One potential failure of a blender is motor burnout due to prolonged use or overloading. Continuous operation at high speeds or attempting to blend hard or frozen ingredients beyond the blender's capacity can cause the motor to overheat and fail. To prevent motor burnout, manufacturers can provide clear guidelines on the maximum load capacity and recommended usage durations. Automatic thermal protection mechanisms can also be incorporated to shut off the blender if it detects excessive heat.

2. Blade Jamming: Another failure can occur if food particles or ingredients get jammed between the blender's blades, preventing them from spinning freely. This can happen if the blender is not properly cleaned or if ingredients are not adequately prepared before blending. To prevent blade jamming, users should be advised to clean the blender thoroughly after each use and ensure that ingredients are cut into manageable sizes. Manufacturers can also design blades with accessible mechanisms for easy cleaning or provide cleaning tools.

3. Leakage: A failure in a blender can also manifest as leakage. This can happen if the blender jar or its sealing components are damaged or improperly assembled. Liquid or food can leak out during blending, resulting in a messy and potentially unsafe situation. To prevent leakage, manufacturers should ensure proper sealing mechanisms and use high-quality materials for the blender jar and lid. Regular inspection of the sealing components can be advised,

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Answer:

Mechanical advantage = 20

Explanation:

Given:

Output force = 8,000 N

Input force = 400 N

Find:

Mechanical advantage

Computation:

Mechanical advantage = Output force / Input force

Mechanical advantage = 8,000 / 400

Mechanical advantage = 20

Answer:d

Explanation:tsssss

Answer:

  d  The energy is transformed to sound and heat energy.

Explanation:

Each time the basketball bounces, it makes sound waves, and dissipates energy in the form of heat in the material of the ball and the surrounding air. There is no light or chemical change involved.

Answer: 6082.2 kg·m/s

Explanation:

Momentum =  p = mv =  (558 kg)(10.9 m/s) = 6082.2 kg·m/s

Physical activity and exercise typically lead to higher energy levels (C).

Physical activity and exercise refer to any bodily movement that requires energy expenditure by the muscles. This can include activities such as walking, running, cycling, swimming, weightlifting, and team sports, among others.

Physical activity and exercise are important for maintaining good health and well-being, as they can help to improve cardiovascular fitness, muscular strength and endurance, flexibility, and overall body composition.

Physical activity and exercise are known to stimulate the production of endorphins, which are natural mood elevators. This can lead to increased energy levels and a general feeling of well-being.

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Some of the most important elements in the internal environment of an organization are the organizational structure, the organizational culture, and the leadership style.

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Answer: The width of bands will be 2λ

Explanation: Please see the attachments below

Answer:

hope it helps for you

Explanation:

A machine is an object or mechanical device that receives an input amount of work and transfers the energy to an output amount of work. For an ideal machine, the input work and output work are always the same. The six common simple machines are the lever, wheel and axle, pulley, inclined plane, wedge, and screw.

Answer :

what is the answer options?

Explanation:

A reference frame is a perspective from which you observe and measure things. Used to define the movement and position of objects. Two people can have different frames of reference for the same situation. In this case, they observe the movement and position of objects differently.

A reference frame is a perspective from which you observe and measure things. Used to define the movement and position of objects.

Two people can have different frames of reference for the same situation. In this case, they observe the movement and position of objects differently.

Units are a way of expressing measurements. It can consistently describe object velocity, mass, position, etc.

Scientists need to communicate their data clearly. They do this by sharing the units and frame of reference they use to measure.

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