On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m^3 , length 84.8 cm and diameter 2.50 cm from a storage room to a machinist. Calculate the weight of the rod, w. The acceleration due to gravity, g = 9.81m/s^2 .

Answer:

Vy = g T       where T is the time taken to fall

1 = 1/2 g T^2      time to fall 1 m

T = (2 / 9.8)^1/2 = .45 sec

Vy = 9.8 * .45 = 4.43 m/s

V = (Vx^2 + Vy^2)^1/2 = (16 + 19.6)^1/2 = 5.97 m/s

.

Pseudo-science wants confirmatory, whereas science promotes or chases falsifications. Other differences are below.

Thus the above response is right.

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Answer:

    There are three main differences between a science and a pseudoscience. The first one being that science searches for failures and closely studies them while pseudoscience hides or excuses failures. Another example is that science will disregard a theory if it is proven wrong with evidence while pseudoscience will ignore refuting information. Lastly, science attempts to find solutions to problems while pseudoscience seldom does.  

A push or pull on an item is defined as a force. Gravitation, resistance, and applied force are examples of forces. Force alters the speed or motion's direction. These modifications are known as acceleration.

According to Newton's second law, the acceleration of an object caused by a net force is directly related to the magnitude of the net force, in the same net force, and inversely related to the object's mass.

A constant force can be defined as a constant force delivered to a specific item in a direction parallel to the acceleration created in the body. As previously established, the consistent force is proportional to the acceleration generated in a body.

The rate of change of linear momentum is proportional to the applied force.

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In the circuit with two 10Ω resistors in parallel, ammeter A would show the greatest current. This is because, in a parallel circuit, the total resistance is lower than in a series circuit, which means that the current can flow more easily.

In this case, the two 10Ω resistors in parallel create a total resistance of 5Ω (1/Rtotal = 1/10 + 1/10 = 2/10, Rtotal = 10/2 = 5), while in the series circuit,https://brainly.com/question/11409042?referrer=searchResults the total resistance would be 20Ω (10 + 10). Ohm's law states that the current is directly proportional to the voltage and inversely proportional to the resistance, so the circuit with lower resistance will allow for greater current flow.

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--The complete Question is, In which circuit would ammeter A show the greatest current: a circuit with one 6V battery and two 10Ω resistors in parallel or a circuit with one 6V battery and two 10Ω resistors in series? --

The acceleration of Thomas is 0.233 m/s^2.

Acceleration is the rate of change of velocity. Thomas the Train chugs along at a velocity of 2 m/s.

Thomas needs to go faster so more coal is shoveled into his engine and he accelerates for 10 seconds until he is going 4.33 m/s.

We are to find the acceleration of Thomas.

The formula for acceleration is given as :

acceleration = (final velocity - initial velocity) / time

In the given problem, the initial velocity of Thomas, u = 2 m/s.

The final velocity of Thomas, v = 4.33 m/s The time for which Thomas accelerates, t = 10 s.

Therefore, the acceleration of Thomas will be given as:

a = (v - u) / ta = (4.33 - 2) / 10s => 2.33 / 10s => 0.233 m/s^2

Thus, the acceleration of Thomas is 0.233 m/s^2.

To summarize, the acceleration of Thomas is 0.233 m/s^2.

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a) The path length difference between the light reflected from the bottom and top surfaces of the film is 3.4 x 10⁻⁶ m

b) It is equivalent to 8 wavelengths of violet light with a wavelength of 425 nm.

a) When light reflects off a thin film of air between two glass plates, interference between the reflected waves can result in constructive or destructive interference, depending on the thickness of the film and the wavelength of the light. This can lead to a range of optical phenomena, including coloration, reflection, and transmission.

In this scenario, violet light of 425 nm is reflected from a thin film of air with a thickness of 1.70 x 10⁻⁶ m. To find the difference in path length between the light reflected from the bottom surface of the film and the light reflected from the top surface, we can use the formula:

path length difference = 2 x thickness of the film

= 2 x 1.70 x 10⁻⁶ m

= 3.4 x 10⁻⁶ m

b) To find the number of wavelengths of light this presents, we can divide the path length difference by the wavelength of the light:

number of wavelengths = path length difference / wavelength

= (3.4 x 10⁻⁶ m) / (425 x 10⁻⁹ m)

= 8 wavelengths

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I assume the blocks are pushed together at constant speed, and it's not so important but I'll also assume it's the smaller block being pushed up against the larger one. (The opposite arrangement works out much the same way.)

Consider the forces acting on either block. Let the direction in which the blocks are being pushed by the positive direction.

The 2.0-kg block feels

• the downward pull of its own weight, (2.0 kg) g

• the upward normal force of the surface, magnitude n₁

• kinetic friction, mag. f₁ = 0.30n₁, pointing in the negative horizontal direction

• the contact force of the larger block, mag. c₁, also pointing in the negative horizontal direction

• the applied force, mag. F, pointing in the positive horizontal direction

Meanwhile the 3.0-kg block feels

• its own weight, (3.0 kg) g, pointing downward

• normal force, mag. n₂, pointing upward

• kinetic friction, mag. f₂ = 0.30n₂, pointing in the negative horizontal direction

• contact force from the smaller block, mag. c₂, pointing in the positive horizontal direction (this is the force that is causing the larger block to move)

Notice the contact forces form an action-reaction pair, so that c₁ = c₂, so we only need to find one of these, and we can get it right away from the net forces acting on the 3.0-kg block in the vertical and horizontal directions:

• net vertical force:

n₂ - (3.0 kg) g = 0   ==>   n₂ = (3.0 kg) g   ==>   f₂ = 0.30 (3.0 kg) g

• net horizontal force:

c₂ - f₂ = 0   ==>   c₂ = 0.30 (3.0 kg) g ≈ 8.8 N

Answer:

ok

Explanation:

The required amount of stretching in the wire when the diameter and load on the wire are specified is calculated to be 0.0456 in.    

It is given that the length of the guy wire AB is 6 ft.

Diameter of the wire is 0.2 in.

The uniformly distributed load is given as 100 lb/ft.

From the rigid beam system's free body diagram and the guy wire connected, we can infer that pausing to consider point C provides.

ΣMc = 0

-(1000 × 5) + (Fba × cos 30 × 10) = 0

-5000 + 8.66Fba = 0

8.66Fba = 5000

Fba = 5000/8.66

Fba = 577.36 lb

The formula yields the length that it extends to,

δ = PL/AE

Where,

δ is change in length

P is Force

L is length of wire

A is area

E is the steel wire's modulus of elasticity, which is 29000 ksi or 29000000 psi.

A = πd²/4

A = π × 0.2²/4

A = 0.0314 in²

Thus, δ = ( 577.36× 72)/(0.0314 × 29000000)

δ = 41569.92/910600 = 0.0456 in

The given question is incomplete. 'The guy wire AB has a length of 6 ft.' It is to be added to the question.

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Answer:

The magnetic field is the area around a magnet in which there is magnetic force. Moving electric charges can make magnetic fields.

Explanation:

acha thnx

There are four atoms that are found in the products.

When a molecule of I2 reacts with NaCl, we must first note that no reaction will take place. This is because Iodine is lower than chlorine in the series hence I2 can not displace chlorine from its salt.

Since we are still going to end up with the substances that we started with, we will have a total of four atoms.

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Answer:

2

Explanation:

i looked it up

nrm 4

Friction is a force that opposes the relative motion of two surfaces in contact. It exists when the surfaces of two bodies are in contact.The answers to the given questions are:

1. See attachment to this answer

2. a = 3.63 m/\(s^{2}\)

3. μ = 0.36

Friction is an oppositional force between the surfaces of two bodies in contact, and tries to limit the motion of one body over the other. It is dependent on the nature of the surfaces in contact.

From the given question;

1. The free body diagram for this question is herewith attached to this answer.

Given that: \(F_{1}\) = 50 N, \(F_{2}\) = 15 N, \(F_{3}\) = 6 N, and m = 8 kg.

2. The acceleration of the body can be determined by:

F = ma

where F is the total force acting on the body, m is the mass of the body and a is its acceleration.

So that;

a = \(\frac{F}{m}\)

The total force on the body is;

F = \(F_{1}\) - (\(F_{2}\) + \(F_{3}\))

  = 50 - (15 + 6)

  = 50 - 21

F = 29 N

Then;

a = \(\frac{29}{8}\)

  = 3.625

a = 3.63 m/\(s^{2}\)

The acceleration of the body is 3.63 m/\(s^{2}\).

3. The coefficient of limiting friction (μ) between the surfaces is:

μ = \(\frac{Force}{Reaction}\)

Force = 29 N

Reaction = mg

               = 8 x 10

               = 80 N

μ = \(\frac{29}{80}\)

   = 0.3625

μ = 0.36

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Answer:

Friction is a force that opposes the relative motion of two surfaces in contact. It exists when the surfaces of two bodies are in contact.The answers to the given questions are:

1. See attachment to this answer

2. a = 3.63 m/

3. μ = 0.36

Explanation:

The airplane will strike the ground at a horizontal distance of 490 meters.

To determine how far the airplane will strike on the ground, we need to consider the horizontal distance traveled by the airplane during its flight.

The horizontal distance traveled by an object can be calculated using the formula:

Distance = Speed × Time

In this case, the speed of the airplane is given as 100 meters per second and the time it takes to cover the distance of 490 meters is unknown. Let's denote the time as t.

Distance = 100 m/s × t

Now, to find the value of time, we can rearrange the equation as follows:

t = Distance / Speed

t = 490 m / 100 m/s

t = 4.9 seconds

Therefore, it takes the airplane 4.9 seconds to cover a horizontal distance of 490 meters.

Now, to calculate the distance on the ground where the airplane will strike, we can use the formula:

Distance = Speed × Time

Distance = 100 m/s × 4.9 s

Distance = 490 meters

It's important to note that this calculation assumes a constant speed and a straight flight path. In reality, various factors such as wind conditions, changes in speed, and maneuvering can affect the actual distance traveled by the airplane.

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Answer:

Approximately \(2.05 \times 10^{8}\; {\rm m\cdot s^{-1}}\).

Explanation:

The refractive index \(n\) of a material is the ratio between the speed of light in vacuum \(c\) and the speed of light \(v\) in that material. In other words:

\(\begin{aligned}n &= \frac{c}{v}\end{aligned}\).

The speed of light in vacuum is \(c \approx 3.00 \times 10^{8}\; {\rm m\cdot s^{-1}}\).

It is given that the refractive index is \(n = 1.46\). Rearrange this equation to find \(v\), the speed of light in this material:

\(\begin{aligned}v &= \frac{c}{n} \\ &\approx \frac{3.00 \times 10^{8}\; {\rm m\cdot s^{-1}}}{1.46} \approx 2.05 \times 10^{8}\; {\rm m\cdot s^{-1}}\end{aligned}\).

Answer:

\(5\sqrt{17}\) km SW

Explanation:

22km S + -3 km N = 19

8 km west

Pythagoream Theorem

8^2 + 19^2 = 425

sqrt 425 SW = 5 root 17

The force acting on the cart is 1.43 N.

Force can be defined as the product of mass and acceleration.

To calculate the force acting on the cart, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the force acting on the cart is 1.43 N.

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Object Z has the least potential energy, object X has the greatest potential energy at a height of 40 meters, and object X will have the greatest kinetic energy when rolled to fall.

To determine which object has the least potential energy and which object has the greatest potential energy, we need to consider their masses and the height from the ground.

Potential energy (PE) is given by the formula PE = mgh, where m is the mass, g is the acceleration due to gravity (approximately 9.8 m/s²), and h is the height.

a) Least Potential Energy:

To find the object with the least potential energy, we need to compare the potential energies of objects X, Y, and Z. Since potential energy is directly proportional to mass and height, the object with the least mass and/or the least height will have the least potential energy.

Among the given objects, object Z has the least mass (27 kg). Therefore, if the height is the same for all three objects, object Z will have the least potential energy.

b) Greatest Potential Energy (at 40m):

To find the object with the greatest potential energy at a height of 40 meters, we need to calculate the potential energies of objects X, Y, and Z at this height.

PE_X = m_X * g * h = 60 kg * 9.8 m/s² * 40 m = 23,520 J

PE_Y = m_Y * g * h = 55 kg * 9.8 m/s² * 40 m = 21,560 J

PE_Z = m_Z * g * h = 27 kg * 9.8 m/s² * 40 m = 10,512 J

Therefore, object X has the greatest potential energy (23,520 J) at a height of 40 meters.

c) Greatest Kinetic Energy When Rolled to Fall:

When objects X, Y, and Z are rolled to fall from a height, the object with the greatest potential energy will have the greatest kinetic energy just before impact. As determined earlier, object X has the greatest potential energy at 40 meters.

According to the conservation of energy, this potential energy will convert entirely into kinetic energy when the object reaches the ground. Hence, object X will have the greatest kinetic energy when rolled to fall.

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Answer:

  b-the velocity of the object will remain the same

Explanation:

Forces from opposite sides cancel each other, so there is no net force on the box that would affect its motion. The velocity of the box will remain unchanged.

__

(The box may be crushed, but it will continue in the same direction at the same speed.)

Answer:

b the velocity of the object will remain the same

Explanation:

use your brain:)

Answer:

Frequency and period are distinctly different, yet related, quantities. Frequency refers to how often something happens. Period refers to the time it takes something to happen. Frequency is a rate quantity.

Answer:

Frequency and period are distinctly different, yet related, quantities. Frequency refers to how often something happens. Period refers to the time it takes something to happen. Frequency is a rate quantity.

Explanation:

Answer:

Explanation:

We can use the kinematic equation for vertical motion to find the value of the initial vertical velocity, v0y:

v0y = v0 * sin(θ)

Next, we can use the equation for vertical motion with constant acceleration (g = 9.8 m/s^2 is the acceleration due to gravity) to find the time it takes for the ball to reach the target:

v0y * t - 0.5 * g * t^2 = h

Solving for t:

t = sqrt(2 * h / g)

Finally, we can use the kinematic equation for horizontal motion (no acceleration in the horizontal direction) to find the horizontal velocity:

v0x = v0 * cos(θ)

So,

v0x = 10.84 * cos(θ) = 10.84 * cos(θ)

v0x = 10.84 * cos(θ) = 10.84 * cos(θ)

We do not have the value of θ, so we cannot determine the exact value of v0x.

Answer:

Rayleigh scattering

Explanation:

The blue color of the sky is due to a phenomenon called Rayleigh scattering. When sunlight enters the Earth's atmosphere, the shorter blue wavelengths of light are scattered more than the other colors by the tiny molecules of nitrogen and oxygen in the air. This causes the blue light to be redirected in many different directions, making the sky appear blue to our eyes. The other colors of light are scattered as well, but to a lesser extent, which is why the sky appears blue instead of a mixture of all colors. This effect is also the reason why the sun appears more yellow, orange or red during sunrise or sunset, when its light has to travel through more of the Earth's atmosphere before reaching our eyes, causing the shorter blue wavelengths to be scattered even more, leaving behind the longer wavelengths of light.

The correct statement is " A dry cell battery has magnetic properties.", The correct option is C.

A dry cell battery does generate its own magnetic field due to the flow of electric current through the battery.

The magnetic field is created by the movement of charged particles (electrons) within the battery. This magnetic field is relatively weak and is not typically strong enough to be used for practical applications outside of the battery itself.

So, the magnetic properties of the dry cell battery are important for understanding its behavior within an electrical circuit.

Therefore, The correct answer is option C.

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The current in the circuit is 2.5 A.

Voltage across the wire AX, V = 4 - 2 = 2V

Resistance per unit length of wire AX, R/l = 2 Ω/m

Length of the wire, l = 0.4 m

Resistance of the wire,

R = R/l x R

R = 2 x 0.4 = 0.8 Ω

According to Ohm's law, the current in the wire AX,

I = V/R

I = 2/0.8

I = 2.5 A

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Answer:

The first harmonic

Explanation:

fundamental harmonic = 1st harmonic = 1st sound

all other sounds after are higher-pitched and quieter

lowest frequency & highest amplitude

but they are all related to that first sound.

integer multiples of the fundamental frequency

chatgpt

Answer:

The fundamental harmonic is the same as the first harmonic, and it is represented by option E. The fundamental harmonic is the lowest frequency standing wave pattern produced by a vibrating object, and it determines the overall pitch or frequency of the sound produced by the object. The fundamental harmonic has the highest amplitude, and all other harmonics are integer multiples of it.

When two sound sources of the same amplitude and similar frequencies f₁ and f₂ are played at a time, beats are produced with a frequency given by:

Since the guitar player wants to hear 9 beats in 2 seconds, then:

Then, the pitches that can be used are those whose difference with respect to the frequency of 343Hz is 4.5Hz:

Therefore, the pitches he could bend the string to, are 347.5Hz and 338.5Hz.

The process can be described as Photosynthesis with an equation \(6CO_{2} + 6H_{2}O - > C_{6}H_{12}O_{6} + 6O_{2}\).

What is Photosynthesis?

As a means of converting light energy into chemical energy, photosynthesis is a process used by plants and other living things. This chemical energy is then released through cellular respiration to power the activity of the organism.

The process of photosynthesis is how plants produce food. Plants use the energy of light during photosynthesis to produce food. Water and carbon dioxide are transformed by plants into the sugar glucose with the help of the sun's energy.

Two reactants—carbon dioxide and water—are used in the photosynthetic process. Both oxygen and glucose are produced by these two reactants. This makes the photosynthetic reaction an endothermic reaction.

According to the photosynthetic formula:

\(6CO_{2} + 6H_{2}O - > C_{6}H_{12}O_{6} + 6O_{2}\)

Therefore, the photosynthesis reaction can be described as:\(6CO_{2} + 6H_{2}O - > C_{6}H_{12}O_{6} + 6O_{2}\)

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We can think of it as photosynthesis with an equation.

\(6CO_{2} +6CH_2}-- > C_{6}H{12}O_{6} + 6CO_{2}\)

Plants and other living things employ the process of photosynthesis to transform light energy into chemical energy. The organism's activity is subsequently powered by the chemical energy that is then released during cellular respiration.

Plants produce food through a process known as photosynthesis. During photosynthesis, plants use the energy of light to create nourishment. With the aid of the sun's energy, plants convert water and carbon dioxide into the sugar glucose.

In the photosynthetic process, carbon dioxide and water are used as reactants. These two reactants result in the production of oxygen and glucose. Because of this, the photosynthetic reaction is endothermic.

The photosynthetic equation states:

\(6CO_{2} +6CH_2}-- > C_{6}H{12}O_{6} + 6CO_{2}\)

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Answer:

109.6m/s

Explanation:

Given parameters:

Initial velocity  = 100m/s

Acceleration = 10m/s²

Distance  = 100m

Unknown:

Final speed  = ?

Solution:

To solve this problem, we use the expression below;

      V²  = U²  + 2aS

 V is the final velocity

 U is the initial velocity

  a is the acceleration

 S  is the distance

   V²  = 100² + 2(10)(100)

   V² = 10000 + 2000

   V² = 12000

    V = √12000 = 109.6m/s

Answer:

Breaking an atom refers to a process called nuclear fission, which involves splitting the nucleus of an atom into smaller nuclei. This is typically accomplished by bombarding the atom with a neutron, which causes the nucleus to become unstable and split apart, releasing a large amount of energy in the process. This energy is what is harnessed in nuclear power plants to generate electricity. However, it should be noted that nuclear fission can also have potentially harmful effects, such as the release of radioactive material and the potential for nuclear accidents.