Through which material do sound waves tend to move the most quickly

The first research on these rocks took location near to Maastricht, Netherlands.

A rock is a dense mass of granules that have grown or been cemented together over time. There are big rocks and little rocks. Pebbles are little rocks. One or more metals can be found in every rock. According to how they were formed, rocks are categorized by geologists (those who study minerals and minerals).

When molten, heated material cools and solidifies, extrusive, and volcanic, igneous rocks are created. Sedimentary, igneous, or metamorphic rocks are the three main categories of rocks. Each of these rocks is the result of physical processes that are a part of the rock cycle, including such melting, cooling, erosion, compacting, or deforming.

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The values of x and y are 28° and 46.33° respectively, will make the lines parallel.

Since angle between two collinear lines is 180°,

5 x + 40° = 180°

5 x = 180 - 40

x = 140 / 5

x = 28°

Since corresponding angles are equal if the lines are parallel,

3 y - 1 + 40° = 180°

3 y = 180 -40 + 1

y = 139 / 3

y = 46.33°

Corresponding angles are the angles formed at same relative position at each intersection. When a transversal intersects two parallel line, the corresponding angles are equal.

Therefore, to make the line parallel the values of x and y should be 28° and 46.33° respectively.

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Option C 100 N is correct. Given that no element of the system is in motion, a person pulling with 100 N of force at either end of the rope is met with a 100 N tension in the rope.

Because the rope is subjected to the same pulling force on both sides, it is in a state of static equilibrium (i.e. it is at rest consequently has a net force of zero). Tension on a rope will be zero if it is pulled from its ends by two opposing forces of 100N each since both forces have identical magnitude but operate in different directions on the same body and cancel each other out.

The complete question is- Two people are pulling on the ends of a rope. Each person pulls with a force of 100 N. The tension in the rope is:

A 0 N

B 50 N

C 100 N

D 141 N

E 200 N

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Answer:

500 kpa

Explanation:

The pressure exerted by a bullet can be calculated using the formula pressure = force/area. Plugging in the given values, we get:

pressure = 2500 N / 0.005 m^2 = 500,000 N/m^2

Since 1 kilopascal (kPa) = 1000 N/m^2, we can convert the pressure to kPa:

pressure = 500,000 N/m^2 ÷ 1000 = 500 kPa

So the answer is 500 kPa.

Answer:

I would say all of the above.

Explanation:

Look below for more examples

Answer: I Believe Its A. :)

Texture: The texture of a substance can differ with a physical change.

Color: The changing of color of a substance is not necessarily an indicator of a chemical change.

Efficiency of a ramp is a ratio of output to input energy. It measures the amount of input energy that is converted to useful output energy.

When someone uses 10 J of work to push a box up a ramp, and lifting the box would only require 2 J of work, the efficiency of the ramp can be determined as follows:Efficiency of ramp = useful work output / total work inputTotal work input is the amount of work used to push the box up the ramp, which is 10 J.Useful work output is the amount of work required to lift the box, which is 2 J.Therefore, the efficiency of the ramp is:Efficiency of ramp = 2 J / 10 J = 0.2 or 20%Therefore, the efficiency of the ramp is 20%.

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The first man to attain zero acceleration will be the light man because the lighter man will not have to fall for as long a time before the air resistance equals his weight.

Acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities.

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Answer:

70mi/h

1mile =1609 meters

1hour=3600 seconds

So,

70×1609/3600

112,630/3600

31.286 m/s

Hope this helps you

Answer:

D

Explanation:

The decrease in potential energy is equal to the increase in kinetic energy.

mgh

250 x 9.8 x 30

=73, 500

Answer:

73,500 J

Explanation:

100% Correct

Answer:

South

Explanation:

I guessed and got it right

Answer:

Explanation:

Sounds travel faster in object having high density proportion or matter. This is because particles vibrates and causing the other particle near to as well vibrate. Hence, when sound is moving from a higher dense medium like Water, the rate of traveling is high compare to it moving in air with less dense.

Tidal power can only be generated in locations with a large difference between high and low tides. This is due to the rise and fall of sea levels, which is caused by the gravitational pull of the Moon on Earth's oceans.

When the tides rise, water is pushed into channels and bays where it can be harnessed to generate electricity. Conversely, when the tides fall, water flows back out to sea, creating a flow of water that can also be used to generate power.Tidal power is an alternative energy source that is being explored by many countries around the world. It is a clean and renewable source of energy that does not produce greenhouse gases or other harmful pollutants. However, tidal power is still in the early stages of development and there are many technical and economic challenges that must be overcome before it can become a major source of energy.

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Answer:

a

Explanation:

Answer:

Equivalent resistance, \(\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+....\)

Explanation:

The parallel combination of resistors is given by :

\(\dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+....\)

In the parallel combination of resistors, the current through each resistor is the same while the potential divides. On the series combination of resistors, the potential divides while the current hrough the current is the same.

Answer: 3) 2.0

Explanation: I guessed and got it right on my assignment :)

The Musculoskeletal system is typically assessed from head to toe and from general to specific. It is option A.

Deformities, side-to-side differences in symmetrical comparison, limitations in movement, and skin changes like rashes, ecchymosis, erythema, and edema will all be looked for in a musculoskeletal system assessment.

They help you move, maintain your posture, and support the weight of your body when used together.

For human health, the musculoskeletal system is very important. The musculoskeletal system not only provides the body with movement and structure, but it also serves as an exercise-stimulated endocrine system. It additionally cooperates with different organs in the body through biochemical flagging.

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The tension in the rope is equal to the weight of the woman, which is 120 lb. Since the woman is not accelerating, the forces acting on her must be balanced, meaning the tension in the rope must equal her weight. Therefore, the tension in the rope is 120 lb.

What is tension?

Tension is a state of mental or emotional strain, resulting from opposing forces or influences. It is a feeling of inner strain caused by a clash of emotions, ideas, or beliefs. It can also result from physical causes such as a lack of sleep, worry, physical exertion, and even hunger.

Tension can manifest itself in physical symptoms such as headaches, neck pain, muscle tightness, and fatigue. It can also lead to emotional problems such as anxiety, irritability, and depression. It is important to recognize and address tension in order to maintain good mental and physical health.

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The principle or law that states "an induced emf in a circuit loop produces a current whose magnetic field opposes further change of magnetic flux" is credited to Lenz. The correct option is b.

The principle described in the question is known as Lenz's law, named after the Russian physicist Heinrich Lenz. Lenz's law is a fundamental law in electromagnetism that relates to electromagnetic induction.

According to Lenz's law, when there is a change in magnetic flux through a circuit loop, an induced electromotive force (emf) is produced in the loop. This induced emf generates a current that creates a magnetic field that opposes the change in the magnetic flux.

In simpler terms, the induced current in a circuit loop always acts in a way that opposes the cause that produces it.

Lenz's law is based on the conservation of energy and is a consequence of Faraday's law of electromagnetic induction.

It provides a fundamental understanding of the relationship between magnetic fields, electric currents, and changes in magnetic flux, and it has important applications in various areas of electromagnetism, including the design and operation of electric generators, transformers, and other electromagnetic devices. The correct option is b.

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the principle or law that says" an induced emf in a circuit loop produces a current whose magnetic field opposes further change of magnetic flux" is credited to

a. Faraday.

b. Lenz.

c. Ampere.

d. Volta.

Answer:

Fnet=ma

24-13=3a

11/3=a

a=3.6m/s2

The acceleration of the body of mass 3 kg is 3.67 meters per second squared.

The force can be computed from Newton's second law. The acceleration is computed from velocity and time. The acceleration is a vector quantity that describes both magnitude and direction. The standard unit is a meter per second square.

From Newton's second law:

Net force = Mass × Acceleration

Net force = Applied force - Frictional force

Net force = 24 N - 13 N

Net force = 11 N

The acceleration is:

Acceleration = Net force / Mass

Acceleration = 11 N / 3.0 kg

Acceleration = 3.67 m/s²

Hence, the acceleration of the body of mass 3 kg is 3.67 meters per second squared.

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After the switch is closed, the plate of the capacitor that eventually becomes positively charged depends on the configuration of the circuit. There are two possible configurations: series and parallel.

Therefore, in both series and parallel configurations, the plate connected to the positive terminal of the voltage source eventually becomes positively charged. The charge on the capacitor builds up gradually until it reaches its maximum value determined by the voltage source and the capacitance of the capacitor.

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Answer:

an increasing distance is traveled during each unit of time.

Explanation:

since the distance is constantly increasing over the same period of time we can say that it is acceleration.

Answer:

30 mph

Explanation:

1800 divided by 60

When an object travels at a constant speed with zero acceleration it is known as uniform rectilinear motion. Then its velocity is given by:

v = d / t

Where d is distance and t is time. Evaluating:

v = 1800 m / 60 s

Answer:

C. 540 N

Explanation:

Let suppose that system formed by the athlete and the load are in equilibrium. By Newton's Laws of Motion, we use the moment equation with respect to the feet of the athlete to determine the upward force exerted by his two arms:

\(\Sigma M = -F\cdot r_{1} + m_{L}\cdot g \cdot r_{2} + m_{A}\cdot g \cdot r_{3} = 0\)

\(F = \frac{(m_{L}\cdot r_{2} + m_{A}\cdot r_{3})\cdot g}{r_{1}}\) (1)

Where:

\(m_{L}\) - Mass of the load, in kilograms.

\(m_{A}\) - Mass of the athlete, in kilograms.

\(g\) - Gravitational acceleration, in meters per square second.

\(r_{1}\), \(r_{2}\), \(r_{3}\) - Distances with respect to the feet, in meters.

\(F\) - Upward force exerted by his two arms, in newtons.

If \(m_{L} = 6\,kg\), \(r_{2} = 1.20\,m\), \(m_{A} = 70\,kg\), \(r_{3} = 0.90\,m\), \(g = 9.807\,\frac{m}{s^{2}}\) and \(r_{1} = 1.30\,m\), then the upward force is:

\(F = \frac{[(6\,kg)\cdot (1.20\,m)+(70\,kg)\cdot (0.90\,m)]\cdot \left(9.807\,\frac{m}{s^{2}} \right)}{1.30\,m}\)

\(F = 529.578\,N\)

The upward force exerted by his two arms is 529.578 newtons. (Right answer: C)

the formula for (momentum) P = (force) F * (Mass) M

P = FM

if mass = 0 momentum = 0

Hope this helps...

Answer:

In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object. ... The equation illustrates that momentum is directly proportional to an object's mass and directly proportional to the object's velocity. The units for momentum would be mass units times velocity uni

Explanation:

The atmosphere of the young Earth contained primarily nitrogen, carbon dioxide, and water vapor.

The early Earth's atmosphere is believed to have been primarily composed of nitrogen, carbon dioxide, and water vapor, with smaller amounts of other gases such as methane, ammonia, and sulfur dioxide. This atmosphere was very different from the present-day atmosphere, which is dominated by nitrogen and oxygen. The lack of oxygen in the early atmosphere was due to the absence of photosynthetic organisms that produce oxygen as a byproduct.

The composition of the early atmosphere played a crucial role in the development of life on Earth, as it provided the necessary conditions for the formation of organic molecules and the evolution of life. Over time, the Earth's atmosphere has undergone significant changes, including the addition of oxygen due to the emergence of photosynthetic organisms and human activity.

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The radial acceleration of the ball during its circular motion is approximately 59.4 m/s^2.

Centripetal acceleration, a = v^2 / r, where v is the speed of the ball and r is the radius of the circle.

The time it takes for the ball to reach the ground,

y = 1/2 g t^2

where y is the initial height of the ball (1.00 m), g is the acceleration due to gravity (9.81 m/s^2), and t is the time it takes for the ball to reach the ground.

t = sqrt(2y/g)

= sqrt(2 x 1.00 / 9.81)

≈ 0.45 s

Velocity, v = x/t

= 1.90 / 0.45

≈ 4.22 m/s

The radial acceleration of the ball during its circular motion can now be found using the equation,

a = v^2 / r

a = v^2 / r = (4.22)^2 / 0.300 ≈ 59.4 m/s^2

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Answer:

distance 1 metre

Explanation:

displacement 3 metre

Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.