As a pendulum swings from its highest to its lowest position along an arc, what happens to its kinetic energy and potential energy?

The correct answer is S = 28.802 m.

Unless driven to change its condition by an external force, a body stays in its state of rest or uniform motion along a straight line. According to the law, a force is a factor that has the power to alter an object's status. Newton uses the inertia of rest, the inertia of motion, and the inertia of direction to explain his first law of motion.

From Newtons 1st equation of motion

V = u+at

3.06 = 0+0.8\(t_1\)

\(t_1\) = 3.825 s

Submarine travels \(t_2\)= 5s with const velocity

and then again \(t_2\)=5s for slowing to strip during slow,

0 = 3.06 - a × 5

a = 0.612 m/\(s^2\)

Total time =\(t_1 + t_2 + t_3\)

T = 13.825 s

Now \(v^2= u^2\)+2as

\(S_1\)= (3.06\()^2\)/2×0.8

\(S_1\) = 5.852 m

\(S_2\) = Ut

\(S_2\) = 3.06 × 5

\(S_2\) = 15.3 m

\(S_3\) = 0 - (3.06\() ^2\)/-2 × 0.612

\(S_3\) = 7.65 m

Total displacement

\(S = S_1+S_2+S_3\)

S = 28.802 m

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Answer:

Explanation:

You didn't ask a question here, but I assume you want the pressure? You can use the ideal gas equation stating that:

PV = nRT

The 'P' is pressure, the 'V' is volume, the 'n is number of moles of gas, the 'R' is the ideal gas constant, and the 'T' is the temperature. First convert the Celsius degrees into Kelvin by using the following relation:

C + 273.15 = K

4 + 273.15 = 277.15K

Now, find the volume of a cylinder by using:

\(V=\pi r^2l\)

The 'l' is the length of the cylinder

Now just plug and chug everything into the ideal gas equation:

\(PV=nRT\)

\(P(\pi r^2l)=(5moles)(8.3145J/moles*K)(277.15K)P=\frac{11.52J}{\pi r^2l}\)

A mass of 48 g is attached to a certain spring, it makes 16 complete vibrations in 2.1 s. The spring constant of the spring is approximately 29.19 N/m.

To find the spring constant (k) of the spring, we can use Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement from its equilibrium position.

Hooke's Law can be expressed as:

F = -kx

Where:

F is the force exerted by the spring,

k is the spring constant,

x is the displacement from the equilibrium position.

In the case of simple harmonic motion, the period (T) of oscillation is related to the spring constant and the mass (m) attached to the spring:

T = 2π * \(\sqrt{m/k}\)

Given:

Mass (m) = 48 g = 0.048 kg

Number of complete vibrations (n) = 16

Time (t) = 2.1 s

First, let's calculate the period of oscillation (T) using the formula:

T = t / n

T = 2.1 s / 16 ≈ 0.13125 s

Now, we can rearrange the equation for the period to solve for the spring constant (k):

k = (4π² * m) / T²

k = (4 * π² * 0.048 kg) / (0.13125 s)²

k ≈ 29.19 N/m

Therefore, the spring constant of the spring is approximately 29.19 N/m.

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The drift velocity of electron is 4.54 * 10⁻⁴ m/s.

Given that, Density of copper is 8.8* 10³ kg/m³

Charge of an electron is 1.6* 10⁻¹⁹ C

For the density of copper, the number of free electrons n can be calculated by

n = number of electrons per kg * ρ

⇒ (9.4776* 10²⁴ ) (8.8 * 10³ kg/ 1 m³) = 8.314 * 10²⁸ electrons per m³

Diameter of the wire is given as 2.053 mm

Let us calculate A for the provided diameter of wire

A = π * (d/2)² = π * (2.053 /2)² = 3.310* 10⁻⁶ m²

Given, I = 20 A

We know the expression for drift velocity as

Vd = I /(n* A* e) = 20 / (8.314 * 10²⁸ * 3.310* 10⁻⁶ * 1.6* 10⁻¹⁹) = 20 / (4.403 * 10⁴) = 4.54 * 10⁻⁴ m/s

Thus, the drift velocity of electron is 4.54 * 10⁻⁴ m/s.

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The exact atomic weight of the element would be approximately 3.019.

The atomic weight of an element is typically represented by the average atomic mass of its isotopes, taking into account their relative abundances. Given that the approximate atomic weight of the element is 26.89, and the equivalent weight (also known as gram equivalent weight) is 8.9, we can calculate the exact atomic weight using the following relationship:

Exact Atomic Weight = Approximate Atomic Weight / Equivalent Weight

Exact Atomic Weight = 26.89 / 8.9

Exact Atomic Weight ≈ 3.019

Therefore, the exact atomic weight of the element would be approximately 3.019.

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Solve for the linear/tangential speed:

a = v²/r

where a = centripetal acceleration, v = speed, and r = radius.

4.7 m/s² = v²/(0.3 m)

v² = (0.3 m) (4.7 m/s²)

v ≈ 3.96 m/s

For every time the record completes one revolution, a fixed point on the edge of the record travels a distance equal to its circumference, which is 2π (0.3 m) ≈ 1.88 m. So if 1 rev ≈ 1.88 m, then the angular speed of the record is

(3.96 m/s) (1/1.88 rev/m) ≈ 7.46 rev/s

Take the reciprocal of this to get the period:

1 / (7.46 rev/s) ≈ 0.134 s/rev

So it takes the record about 0.134 seconds to complete one revolution.

The correct answer is 12x+7 as when you multiply these two numbers they cancel each other out

The  safely removing a needle from a syringe based on safe sharps work practices is to use a needle box equipped with a needle removal device that permits the needle to fall directly into the needle box or sharps container when removed.

This method ensures that the needle is immediately disposed of in a safe manner, reducing the risk of accidental needlestick injuries. It is important to never remove the needle by twisting off the syringe directly by hand, as this can cause the needle to become dislodged and potentially cause harm. Similarly, asking a colleague to hold the syringe while you twist the needle off by hand also poses a risk. Recapping the needle with forceps before removing it by hand is also not recommended, as it increases the risk of needlestick injuries. Therefore, using a needle box equipped with a needle removal device is the safest and most effective method for removing a needle from a syringe.

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When a particle is located a distance 2 meters from the origin, a force of 4 newtons acts on it.

The work done in moving the particle from A to B is 16J

The work done in moving the particle from B to C is -8J

The work done in moving the particle from C to D is 8J

Force F = 4N

Displacement dx = 2m

Total displacement of the particle from point A to B is dAB = 4m.

Work done is given by: W = F.dx (cosθ)  

Where,θ is the angle between the force and displacement.

1. Work done in moving the particle from A to B:

Let the particle is located at point A (x = 0). The force F acts in the positive direction of the x-axis. Therefore, the angle between the force and displacement is 0°.The work done in moving the particle from point A to B is

WAB = F(dx) cosθ

= (4 N)(4m) cos 0°

= (4 N)(4m)

= 16 J

2. Work done in moving the particle from B to C:

The displacement of the particle from B to C is dBC = 2m.

Therefore, the total displacement of the particle from point A to C is

dAC = dAB + dBC

=4m + 2m = 6m.

The force F acts in the negative direction of the x-axis. Therefore, the angle between the force and displacement is 180°.The work done in moving the particle from point B to C is

WBC = F(dx) cosθ

= (4 N)(2m) cos 180°

= (4 N)(-2m)

= -8 J

Note: Here, cos 180° = -1.

3. Work done in moving the particle from C to D:

Let the particle is located at point D (x = 6m).

The force F acts in the positive direction of the x-axis. Therefore, the angle between the force and displacement is 0°.

The work done in moving the particle from point C to D is WCD = F(dx) cosθ

= (4 N)(2m) cos0°

= (4 N)(2m)

=8J

Therefore, the work done in moving the particle from A to B is 16 J, the work done in moving the particle from B to C is -8 J, and the work done in moving the particle from C to D is 8 J.

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bottom-up processing is a cognitive process that involves perceiving and understanding information based on individual sensory stimuli. examples of bottom-up processing in everyday life include recognizing objects based on their color, shape, and texture, identifying sounds based on their pitch, volume, and timbre, and perceiving tastes and textures based on individual flavors and tactile sensations.

bottom-up processing is a cognitive process that involves perceiving and understanding information based on the individual sensory stimuli. It refers to the way our brains make sense of the world by analyzing the basic features of stimuli and building up a complete perception.

In everyday life, we encounter numerous examples of bottom-up processing. For instance, when we see a new object, our brain processes its individual features such as color, shape, and texture, and then combines them to form a complete perception of the object. This allows us to recognize and understand the object without prior knowledge or expectations.

Similarly, when we hear a new sound, our brain analyzes its pitch, volume, and timbre to recognize and understand the sound. This enables us to differentiate between different sounds and identify their sources.

Bottom-up processing is also involved in other sensory experiences. When we taste a new food, our brain processes the individual flavors and textures to form a perception of the taste. Similarly, when we touch different textures, our brain analyzes the tactile sensations to understand the texture.

In summary, bottom-up processing plays a crucial role in our everyday lives by allowing us to perceive and understand the world around us based on the individual sensory stimuli we encounter.

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Answer:

Mendeleev

Explanation:

He discovered the periodic table trying to organize the elements in 1869

Explanation:

To find the resultant force subtract the magnitude of the smaller force from the magnitude of the larger force. The direction of the resultant force is in the same direction as the larger force

Answer:

0.08

Explanation:

this problem assume that both of whale and submarine are in rest position or in constant linier motion in same direction and same speed.

The sound will travel from Submarine to the whale and back again to submarine. so the time will be like this

t = 2d/v

t = 2*58.8/1520

t = 117.6/1520

t = 0.077368 s

t ≈ 0.08 s (less then 1 s)

Answer:

0.0774s

Explanation:

The formula to find the time of an echo is time = (2)(distance) / (velocity)

So plug in the numbers to the formula

(2)(58.8) / (1520)

= 0.0774s

According to Heisenberg's Uncertainty Principle, it is impossible to determine the position and momentum of a particle with absolute certainty at the same time. The Uncertainty Principle is defined as Δx * Δp ≥ h/4π, where Δx is the uncertainty in position, Δp is the uncertainty in momentum, and h is Planck's constant.
For the given problem, the uncertainty in position of a proton with mass 1.673 x 10-27 kg and kinetic energy 1.2 keV can be calculated as follows:

We know that the momentum p of a particle is given by p = mv, where m is the mass of the particle and v is its velocity.
The kinetic energy of the proton can be converted to momentum using the equation E = p²/2m, where E is the kinetic energy.
1.2 keV = (p²/2m)    (1 eV = 1.6 x 10^-19 J)
p²/2m = 1.92 x 10^-16 J
The momentum p of the proton can be calculated by taking the square root of both sides:
p = √(2mE) = √(2 x 1.673 x 10^-27 x 1.6 x 10^-16) = 7.84 x 10^-22 kg m/s

Using Heisenberg's Uncertainty Principle, we can calculate the uncertainty in position as follows:
Δx * Δp ≥ h/4π
Δx ≥ h/4πΔp
Substituting the values of h, Δp, and solving for Δx:
Δx ≥ (6.626 x 10^-34)/(4π x 7.84 x 10^-22)
Δx ≥ 2.69 x 10^-12 m

Therefore, the uncertainty in position of the proton is 2.69 x 10^-12 m.

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Answer:

b

Explanation:

it is the only one that has to do with animals

Answer:

The answer is B

Explanation:

According to the Skygazer's Almanac for 2022 at 40 degrees, Venus and Saturn will be in opposite parts of the sky on December 17, 2022.

The Skygazer's Almanac provides astronomical information for a specific location and year. In this case, at a latitude of 40 degrees, the almanac indicates that Venus and Saturn will be in opposite parts of the sky on December 17, 2022. This means that Venus and Saturn will appear at opposite sides of the celestial sphere as observed from Earth. However, it's important to note that the almanac's predictions are approximate and can be influenced by various factors, including atmospheric conditions and the observer's specific location. To obtain the most accurate and up-to-date information, it is recommended to consult more recent astronomical sources or use specialized software that can provide precise positions and dates for celestial events.

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The distance covered by the swimmer in the given time is 0.417 km.

Velocity of the river, v₁ = 4 km/hr

Velocity of the swimmer, v₂ = 3 km/hr

Time taken by the swimmer for swimming, t = 5 minutes

A relative motion velocity is the speed at which one thing is moving in relation to another item, which may be stationary, moving at a constant speed, moving slowly, moving at a greater speed, or moving in opposite directions.

The magnitude of the resultant velocity of the river and the swimmer is given by,

v = √(v₁²+ v₂²)

v = √(4²+ 3²)

v = √(16 + 9)

v = √25

v = 5 km/hr

Therefore, the distance covered by the swimmer in the given time is,

d = v x t

d = 5/60 x 5

d = 25/60

d = 0.417 km

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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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Answer:

8000 J

Explanation:

There is a Quizlet made by a teacher with this answer.

Answer:

Explanation:

Set specific, achievable goals: Break down your larger goal into smaller, more manageable targets that you can work towards each day. When you accomplish these smaller goals, it will give you a sense of accomplishment and motivation to continue working towards your larger goal.

Visualize your success: Imagine yourself successfully achieving your goal and all of the positive feelings that come along with it. This visualization can help keep you focused and motivated when distractions arise.

Find an accountability partner: Find someone who shares your goals and who can help you stay focused and motivated. This could be a friend, family member, or a coach. Having someone to share your progress with and to hold you accountable can be a powerful motivator.

Reward yourself: Set up a system of rewards for yourself when you reach certain milestones on the way to your goal. These rewards could be something as simple as a treat or a movie, or something more substantial like a new piece of workout equipment.

Get organized: Plan out your workouts and stick to a routine. Having a clear plan and structure can help you stay focused and motivated, as you can see how each workout is helping you to reach your goal.

Surround yourself with positive influences: Surround yourself with people who support and encourage your goals. Having positive influences in your life can help you stay motivated and inspired to reach your goals.

The highest trophic level has the least available energy in kilojoules.

Even though the food web is not shown in the question, but we know that energy decreases steadily as it is passed on from one trophic level to the next according to the second law of thermodynamics.

Energy enters into the system from the sun. The primary producers utilize this energy to produce food. As plants are eaten by animals, this energy is transferred along the food web an diminishes at each higher trophic level.

At the highest trophic level, the the least available energy in kilojoules in this food web is found.

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The charge of the particle must be approximately 2.16 x 10^-5 Coulombs (C) to remain stationary in the downward-directed electric field of magnitude 660 N/C.

To determine the charge (sign and magnitude) required for a particle of mass 1.45 g to remain stationary in a downward-directed electric field of magnitude 660 N/C, we can use the equation:
F = q * E
where F is the electric force, q is the charge, and E is the electric field.
Since the particle is stationary, the electric force must be equal and opposite to the gravitational force acting on the particle:
F_gravity = m * g
where m is the mass of the particle and g is the acceleration due to gravity.
By equating these two forces, we have:
q * E = m * g
Substituting the given values:
q * 660 N/C = 1.45 g * 9.8 m/s^2
Converting the mass from grams to kilograms:
q * 660 N/C = 0.00145 kg * 9.8 m/s^2
Simplifying:
q * 660 N/C = 0.01421 kg * m/s^2
Dividing both sides by 660 N/C:
q = 0.01421 kg * m/s^2 / 660 N/C
Calculating:
q ≈ 2.16 x 10^-5 C
Therefore, the charge of the particle must be approximately 2.16 x 10^-5 Coulombs (C) to remain stationary in the downward-directed electric field of magnitude 660 N/C.

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Power may be characterized as the total amount of energy that is transferred or converted per unit of time. The SI Unit of power is Watt.

Power is the product of voltage and current. With an electronic circuit, the amperage is the amount of electric charge that flows through the wire, while the voltage is the amount of electric potential within a circuit.

By multiplying the voltage times the ampere, you can see how much energy can flow through the circuit. The energy, or power, is measured in watts.

Power in Watts is calculated by multiplying voltage in Volts times current in Amps: 10 Amps of current at 240 Volts generates 2,400 Watts of power. This means that the same current can deliver twice as much power if the voltage is doubled.

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Answer:

Temperatures on Mars average about -81 degrees F. However, temperatures range from around -220 degrees F. in the wintertime at the poles, to +70 degrees F.

Explanation:

Answer:

Time = 801.802 secs.

Explanation:

Speed can be defined as the rate of change in the magnitude of distance with respect to time. It is a scalar quantity because it only has magnitude but no direction.

Given the following data;

Average speed = 11.1m/s

Time =?

Distance = 8900m

\(Speed (S) = \frac{distance}{time}\)

\(S = \frac{d}{t}\)

Making time (t) the subject of formula, we have;

\(Time (t) = \frac{d}{s}\)

\(Time (t) = \frac{8900}{11.1}\)

Time = 801.802 secs.

Hence, the time the biker takes to cover the segment is 801.802 seconds.

The total force on the ground due to the bricks is 47,040 N.

The total force on the ground due to weight of the bricks is calculated as follows;

Fₙ = mg

where;

Fₙ = (1500 x 3.2) x 9.8

Fₙ = 47,040 N

Thus, the total force on the ground due to the bricks is 47,040 N.

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Explanation:

\(workdone = force \times distance \\ = 500 \times 100 \\ = 50000 \: J\)