the period of the object attached to a spring is tt . how much time does the object need to move from the equilibrium position to half the amplitude?

Answer: The fork feels colder when you touch it because Steel conducts thermal energy better than plastic. The correct statement is 1

Explanation:

The ability of a material to transfer heat energy in an environment is known as thermal conductivity. It feels cooler to touch a steel spoon than a plastic spoon found in the same temperature because steel which is a type of metal is a highly efficient thermal conductor than spoon which is a plastic.

Metals can be defined as those substances which forms positive ion in a chemical reaction by lossing it's electrons. It has the following properties:

--> it is solid at room temperature

--> it has high melting point

--> it has high boiling point and

--> it is malleable.

Metals are said to be good thermal conductor because they contain free flowing conduction electrons. Therefore, when you touch a steel spoon and plastic spoon, it feels cooler because the steel metal is able to conduct heat away from your hand faster than the plastic which is a poor conductor of heat.

Answer:

1. Steel conducts thermal energy better than plastic.

Explanation:

Both objects are at the same temperature, and when you touch them, you feel the steel to be colder.

This happens because steel is a better thermal conductor, then when you touch it, it "steals" more thermal energy from you than the plastic.

As the amount of thermal energy transmitted is greater for the steel, you will feel it to be colder.

Then the correct option is the first one, steel conducts thermal energy better than plastic.

A molecular cloud's mass is only a small percentage of interstellar dust, often between 1% and 10%. Interstellar space contains dense areas called molecular clouds where gas and dust combine to produce new stars.

While most of the cloud's mass is made up of gas, interstellar dust is made up of microscopic solid particles that are typically between a few tens of nanometers and a few micrometers in size. These particles are made up of a variety of elements, including silicon, iron, carbon, and oxygen. Interstellar dust plays a critical role in the formation of stars and planetary systems even though it is relatively light in mass compared to gas because it provides the raw materials for the growth of dust grains and subsequent processes like accretion and coalescence.

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The claim can be Cosmetics, hygiene, and cleaning product emissions may be dangerous.

Evidence 1: Effect of Air Quality

Volatile organic compounds (VOCs), including formaldehyde, benzene, and toluene, can be found in a variety of cosmetic, hygiene, and cleaning goods. These VOCs have the potential to evaportate and cause indoor air pollution.

Environmental impact is evidence number two

Cosmetics, hygiene, and cleaning goods can have a detrimental environmental impact during manufacturing, usage, and disposal. Microplastics and certain chemicals are among the substances present in these items that may find their way into rivers and endanger aquatic life.

Evidence 3: Worker health effects

Occupational health risks can be present for workers who manufacture and produce hygiene, cleaning, and cosmetic items.

Reasoning: It is clear from the research that emissions from cosmetic, hygiene, and cleaning goods have the potential to be harmful.

Thus, this way, harmful are the emissions from cosmetics, hygiene, and cleaning products.

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hope it helps

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When a wire is carrying current, charges enter the wire at the positive terminal of the voltage source and exit at the negative terminal, keeping the overall charge at zero throughout the current's passage.

Charge moving across a conductor produces current. There is always the same number of electrons in a wire today. As a result of an equal amount of electrons entering and exiting the circuit simultaneously, current flows through the wire when electrons enter the circuit. Current flow may nevertheless be neutral with no overall charge.

Neutral wires do indeed carry current. In single-phase circuits, the current flows in the opposite direction from the "phase" or "line" or "hot" wire, but it is exactly equal to that current. Out of "line," into "neutral," back into "line," and finally back into "neutral" and back into "line" (since it is AC the direction reverses every cycle.)

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Answer:

In Step 3, he should have multiplied 6.25 J per m2/s2 by 2 instead of dividing it by 2.

Explanation:

D. In Step 3, he should have multiplied 6.25 J per m2/s2 by 2 instead of dividing it by 2.

The energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

According to the question,

The object posses an kinetic energy,

Given Mass of an object = 400 J

Energy moving at a velocity= 8 m/s.

\(E_k =\frac{1}{2} mv^2\\\\=400J = \frac{1}{2} *m(8)^2\\\\\\=\frac{400J}{64m^2/s^2} = \frac{1}{2}*m\\ \\ =6.25 *2 = m\\\\=12.25 kg\)

Hence,

In the step 3 ,he should have multiplied 6.25 J per m²/s² by 2 instead of dividing it by 2.

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some knee pads for soccer

The effect of collision during a soccer game can be minimized by wearing a shin protection gear called the shin guard.

The protection gear is usually worn in other to palliate the effect of collison during sporting activities.

As for football, the most vulnerable part of the body which is usually prone to damage during collision is the shin or knee.

Therefore, players often wear shin protection gear in other to minimize the risk of damage during collision.

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Answer:

D

Explanation:

Mgo is ionic and N2 has covalent bonds

Unintentional injuries caused by accidents are the number one killer of children and teenagers.

What causes the majority of adolescent deaths?

A little over half of all adolescent fatalities are caused by accidents. Over one-third of all fatal accidents fall under the category of motor vehicle fatalities, which is the top cause of death for teens. Non-Hispanic black male teens have the highest death rate.

The top causes of mortality for children under 5 years old continue to be congenital anomalies, pre-term birth complications, birth asphyxia, and other infectious diseases like pneumonia, diarrhea, and malaria. According to a recent study, homicide is the top cause of death for children in the United States, and the total rate has grown by 4.3% annually on average.

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Answer:

6/5  * R

Explanation:

The 3 in series sum to 3R for one branch of the parallel circuit

 the 2 in series sum to 2R  for the other side of the parallel circuit

now find the equivalent R of the parallel circuit with 3R and 2R

 here is one way

   Requiv = 1 / ( 1/(3R) + 1/(2R) ) =

                  1/ ( 5/(6R) ) =

                    6R/5  

the equiv resistance = 6/5  * R

Answer:

The energy of an isolated system remains conserved in the absence of any kind of energy loss. The energy loss takes place due to the friction in the system. If the system is isolated, then energy is converted from one form to another form of energy.

Explanation:

Explanation:

Answer:

The magnetic field will be directed away from me into the screen

Explanation:

The force on a positive charge in a magnetic field can be shown by Lorentz right hand rule. If the palm of the left hand is held out with the fingers (representing the field) held parallel to the palm, and the thumb (representing the direction of motion of the positive charge), held perpendicular to the rest of the fingers. The palm will push in the direction of the force on the charge.

Having this in mind, if the thumb points vertically up, with the with the pal facing the left, then the fingers (representing the field) points away from me into the screen.

Answer:

The doctors could see if her cells are getting the molecules they need from food and air

Explanation:

The doctors could see if her cells are getting the molecules they need from food and air. Doing so allows the doctors a general overview of how well her body's biological systems are performing since the basic necessities of the human system are food and oxygen. Therefore if the body is receiving both food and oxygen properly and distributing it properly and efficiently as well without any problems then the most likely outcome is that she is healthy enough to perform her tasks in the submarine under more pressure.

Answer:

The doctors could see if her cells are getting the molecules they need from food and air

Explanation:

Answer:

The correct option is;

d) Parallel to the plane

Explanation:

The forces acting on the box of mass, m are;

Weight of the box acting an angle, θ, equal to the inclination of the plane to the perpendicular of the plane

Weight of the box acting along the plane = m×g×sin(θ)

The force of friction along the plane = μ×m×g×cos(θ)

The total force acting downward along the plane \(F_{down}\), = m×g×sin(θ) + μ×m×g×cos(θ)

The Force needed to pull the box up along the plane F = The total force acting downward along the plane

F = m×g×sin(θ) + μ×m×g×cos(θ) = m×g×(sin(θ) + μ×cos(θ))

When the force, Fₐ is applied vertically, the force acting along the plane = Fₐ×cos(θ)

When the force is applied perpendicular, the force acting along the plane = Fₐ×sin(θ)

When the force is applied horizontally, the force acting along the plane = Fₐ×cos(θ)

When the force is applied parallel to the plane, the force acting along the plane = Fₐ

Therefore, since Fₐ > Fₐ×cos(θ) and Fₐ > Fₐ×sin(θ), for acute angles, we have that the least force is required when the force is acting parallel to the plane.

The time taken for the bullet to hit the ground is 0.205 seconds.

The given initial speed of the bullet is 200.0 m/s and the initial height of the bullet above the ground is 1.00 m. The time taken for the bullet to hit the ground needs to be determined.To calculate the time it will take the bullet to hit the ground, we can use the kinematic equation:h = vit + 1/2gt²Where, h = height of the bullet above the ground, vi = initial velocity of the bullet, g = acceleration due to gravity and t = time taken for the bullet to hit the ground.

Given, h = 1.00 m, vi = 200.0 m/s, g = 9.81 m/s²Therefore,1.00 = 200t + 1/2 × 9.81 × t²1.00 = 200t + 4.905t²1.00 = t(200 + 4.905t)4.905t² + 200t - 1.00 = 0Solving for t by using the quadratic formula: t = (-b ± √(b² - 4ac))/(2a)Where, a = 4.905, b = 200, c = -1.00t = (-200 ± √(200² - 4 × 4.905 × -1.00))/(2 × 4.905)t = (-200 ± 198.9)/9.81t = (-200 + 198.9)/9.81 (rejecting the negative value as time cannot be negative)t = 0.205 seconds. Therefore, the time taken for the bullet to hit the ground is 0.205 seconds.

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Answer:

Circuit

Explanation:

because a roughly circular line, route, or movement that starts and finishes at the same place.

This question can be solved by using the concepts of electrical energy, electricity, circuit, and electric current.

The flow of electricity from one place to another is called "Electrical Energy".

The electric current or electricity is defined as the rate of flow of electric charges from one point to another point, along a path known as a circuit. Electrical energy is caused by the movement of electric charges or the electric current from one point to another point of the circuit.

Therefore, this flow of electricity or electric current from one place to another place is termed Electrical Energy.

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The attached picture shows examples of electrical energy.

Physics is a natural science that studies the behavior and properties of matter and energy. Its various branches have a wide range of applications in our daily lives, from designing structures and machines to developing new technologies and understanding the universe.

Physics is a natural science that studies the behavior and properties of matter and energy, their interactions, and the laws that govern them. It is a fundamental science that aims to understand the universe from the smallest subatomic particles to the largest structures and phenomena.

The branches of physics include classical mechanics, thermodynamics, electromagnetism, optics, quantum mechanics, relativity, astrophysics, and nuclear physics. These branches have various applications in our daily lives. For example:

1. Classical mechanics is used in designing structures and machines, and in predicting the motion of objects such as cars, airplanes, and projectiles.

2. Thermodynamics is important for understanding the behavior of heat and energy transfer in engines, refrigerators, and other devices.

3. Electromagnetism is essential for the functioning of electronic devices, such as computers, televisions, and mobile phones.

4. Optics is used in designing lenses, cameras, and telescopes, as well as in medical imaging technologies such as X-rays and MRI scans.

5. Quantum mechanics has applications in the development of new materials, electronics, and computer technologies.

6. Relativity is important for understanding the behavior of objects traveling at high speeds or in strong gravitational fields, such as GPS satellites.

7. Astrophysics helps us understand the properties and behavior of celestial objects, such as stars, galaxies, and black holes.

8. Nuclear physics is important for energy production and the study of the fundamental building blocks of matter.

In conclusion, physics is a fundamental science that has a wide range of applications in our daily lives, from designing structures and machines to developing new technologies and understanding the universe. Its various branches help us understand the behavior of matter and energy and the laws that govern them, and they have a profound impact on many aspects of our lives.

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ANSWER

EXPLANATION

Parameters given:

Speed of electron, v = 4.10 * 10^3 m/s

Magnetic field, B = 1.45 T

Magnetic force, F = 1.40 * 10^(-16) N

To find the angle that the velocity of the electron makes with the magnetic field, apply the formula for magnetic force:

where θ = angle

q = electric charge = 1.6 * 10^(-19) C

Make θ the subject of the formula:

Therefore, the angle that the velocity makes is:

To find the second angle, subtract the angle from 180 degrees:

The angles are:

Answer:

There would be tremendous earthquakes and tsunamis, followed by massive volcanism around the impact zone. The ozone layer would be destroyed. The oceans would turn acidic. The Sun would be blotted out, probably for decades.              

Explanation:

    Hope this helps!

Answer: Well it depends on the size. If the asteroid was the size of a basketball, it would most probably turn to dust by the time it reaches the surface. But, if it was the size of Australia, then most probably everyone would die.

Explanation:

The Focal length (f) exceeds the Object distance (s).

1/v + 1/u = 1/f

As we can see in the fig. the magnitude of the object distance (u) is less than the magnitude of the image distance (v).

Also; u = - u & v = v {distance in the left of the lens is taken -ve.}.

Substituting in eqn (i) :

1/v - 1/u. = 1/f.  ; &  |v.| > |u|

1/v = 1/f + 1/u

Now; In order to be v greatest, 1/v should be smallest.

So, 1/f + 1/u should be smallest  : NOTE : f is a fixed quantity, so value of 1/f can't be changed.

For 1/f + 1/u to be smallest, value of u must be larger.

So the Object distance (s) is larger than the Focal length (f).

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Answer:

The Ability to do work

Explanation:

energy is needed to do work because without energy no work can be done due to the fact that there is no energy

The wavefunction number for the specified function is:Ψ(x) = \([2/(\alpha (1 - e^{(-4nm/\alpha )))}]e^{(-x/\alpha )}\)

The wavefunction given is:

Ψ(x) = A\(e^{(-x/\alpha )}\)

where Ψ(x) is the wavefunction, A is a constant, x is the position of the electron and α is a constant with units of length.

The normalization condition is:

∫|Ψ(x)|² dx = 1

Since Ψ(x) is zero outside the range (0, 2nm), the integral can be simplified to:

∫\(0^(2nm)|Ae^{(-x/\alpha )}|\) ²dx = 1

Simplifying the integral further:

\(|A|^{2} (-\alpha /2) (e^{(-4nm/\alpha ) - 1)} = 1\)

Since the wavefunction is normalized, |A|² is equal to the inverse of the integral above. Solving for |A|², we get:

|A|² = \([-2/(\alpha (e^{(-4nm/α) - 1))}]\)

Thus, the wavefunction is:

Ψ(x) = \([2/(\alpha (1 - e^{(-4nm/\alpha )))}]e^{(-x/\alpha )}\)

So, the value of the wavefunction for this given function is:

\([2/(\alpha (1 - e^{(-4nm/\alpha )))}]e^{(-x/\alpha )}\)

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Answer:

The robot should hold the bucket at 137.6 m from the start of the field

Explanation:

Horizontal Motion

When an object is launched horizontally with a speed v from a height h, it describes a curved path exclusively ruled by gravity until it eventually hits the ground.

The range or maximum horizontal distance d traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

Birdman flies horizontally at a  speed of v=40 m/s and a height of h=58  m. He releases a turd above the start of the field. If the robot was exactly down  Birdman, then it won't catch the turd with the bucket because it would land farther away by a distance equal to the range. Thus:

\(\displaystyle d=40\cdot\sqrt{\frac {2*58}{9.8}}\)

\(\displaystyle d=40\cdot\sqrt{11.84}\)

d = 137.6 m

The robot should hold the bucket at 137.6 m from the start of the field

Answer:

try typing this into brainly. i just took my phyics exam and i think that was one i found

The speed of 5 kg ball is 10.2 m/s

Given data:

The mass of cart 1 is m₁=3 kg.

The speed of cart 1 moving east is v₁=17 m/s.

The mass of other cart is m₂=5 kg.

Since the carts stick together, and comes to rest their final velocity is zero, i.e., v=0.

Applying the conservation of momentum between the carts as,

Here, v₂ is the speed of 5kg cart. Since the cart 2 moving in west direction therefore v₂=-v₂.

Substitute all the values in above equation,

Thus, the speed of 5 kg ball is 10.2 m/s.

Final answer: 10.2 m/s

Answer:

The spring force is called a restoring force because the force exerted by the spring is always in the opposite direction to the displacement. This is why there is a negative sign in the Hooke's law equation. Pulling down on a spring stretches the spring downward, which results in the spring exerting an upward force.

Answer:

A

Explanation:

The total time it takes for the sprinter to finish the 200m race is approximately 17.14 seconds.

To calculate the time it takes for the sprinter to finish the 200m race, we need to consider the time it takes for the sprinter to reach top speed and the remaining distance after reaching top speed.

Given that the sprinter reaches a top speed of 14.9 m/s in the first 11.6m of the race, we can calculate the time it takes for this initial acceleration using the equation:

v = u + at,

where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time taken.

In this case, the initial velocity u is 0 m/s (as the sprinter starts from rest), the final velocity v is 14.9 m/s, and the distance covered is 11.6m. Since we are looking for time, we rearrange the equation as:

t = (v - u) / a.

Substituting the values, we have:

t = (14.9 m/s - 0 m/s) / a.

Using the given information, we can determine that the acceleration a is equal to (14.9 m/s) / (11.6 m) = 1.28 m/s².

Now, to find the time taken to finish the remaining distance of 200m - 11.6m = 188.4m, we use the equation:

s = ut + 0.5at²,

where s is the distance, u is the initial velocity, a is the acceleration, and t is the time taken.

Rearranging the equation to solve for time, we have:

t = √(2s / a).

Substituting the values, we have:

t = √(2 * 188.4m / 1.28 m/s²).

Evaluating the expression, we find:

t ≈ √294.375 ≈ 17.14s.

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