25 POINTS PLS ANSWER
which phrase describes a scientific law
A. a statement that can be used to predict the motions of two objects only under special conditions
B. An explanation of why the force of gravity exists between two objects
C. A claim about the pull between objects that cannot be verified through experimentation
D. An equation that can be used to accurately calculate the pull of gravity between two objects

The change in the object's angular momentum is equal to the area under the net torque vs. time graph for the given time interval.

The relationship between net torque and angular momentum is given by the equation:

ΔL = τΔt

where ΔL is the change in angular momentum, τ is the net torque, and Δt is the time interval over which the torque is applied.

From the net torque vs. time graph in Figure 1, we can see that the net torque applied to the object varies with time. To calculate the change in angular momentum for a given time interval, we need to find the area under the net torque vs. time graph for that interval.

Using calculus, we can express the area under the curve as an integral:

ΔL = ∫τ dt

where the integral is taken over the time interval of interest.

Alternatively, we can estimate the area using numerical methods, such as the trapezoidal rule or Simpson's rule.

The correct statement about the change in the object's angular momentum for a given time interval is that it is equal to the area under the net torque vs. time graph for that interval. This relationship is based on the equation ΔL = τΔt and can be calculated using integration or numerical methods.

To know more about momentum, visit;

https://brainly.com/question/18798405

#SPJ11

Acceleration is the answer.............

Test and Collect Data, Select a Better Calibration Laboratory, Remove Bias and Characterize could be three reasonable measures

For any experiment, a need to keep in mind that the data that you collected must be tested or verified which means for the best answer one needs to get the best or clear input that is input in the case of experiments. And collect relevant data only for the output to preside.

The second way could be the workplace or laboratory need to be a calibration Laboratory so the experiments could be conducted without ant external disturbance along with the required equipment to make the work easy and faster.

last but not least one need to select unbiased and characterized types of equipment which reduce the margin of error from the output we are providing

Learn more about Measurement equipment: https://brainly.com/question/13471926

#SPJ4

Answer:

【 In vector form , if angle between velocity vector and acceleration vector is less than 90° and greater than 0° then it is positive acceleration and if it is less than 180° and greater than 90° then it is negative acceleration. If there is no acceleration vector then it is called zero acceleration. 】

The article is not found here but surveys are important because they are representative samples of a population.

A survey is a useful tool based on population samples, which is used to make statistical analyses in a given investigation.

Differences in surveys are generally due to small sample sizes, which may lead to errors in the analysis of data.

In conclusion, the article is not found here but surveys are important because they are representative samples of a population.

Learn more about surveys here:

https://brainly.com/question/13624055

#SPJ1

ANSWER:

6500 pounds

STEP-BY-STEP EXPLANATION:

To know the answer, we must first know the equivalence between tons and pounds, since it is the only way they can be added.

We know that 1 ton equals 2000 pounds, therefore:

The two main mechanisms involved in sea level rise are thermal expansion and the melting of land-based ice. Hard defenses can provide protection against rising sea levels and coastal erosion for the communities located directly behind them, they can have potential impacts on neighboring communities.

As the Earth's oceans absorb heat from the atmosphere, the water expands thermally, leading to an increase in sea level.

Melting of land-based ice refers to the melting of glaciers and ice sheets, such as those in Greenland and Antarctica.

Under the RCP8.5 scenario, which represents a high greenhouse gas emissions trajectory, the dominant mechanism of sea level rise is expected to be the melting of land-based ice.

The increased temperature and subsequent accelerated melting of ice sheets and glaciers would contribute significantly to rising sea levels.

Hard defenses can provide protection against rising sea levels and coastal erosion for the communities located directly behind them, they can have potential impacts on neighboring communities.

Some of these impacts include Increased erosion, altered wave patterns, loss of coastal access, coastal squeeze, and visual and aesthetic impact.

It is essential to consider these potential impacts on neighboring communities when evaluating the suitability and long-term effects of implementing sea walls as coastal protection measures.

Read more about Sea level rise.

https://brainly.com/question/3988772

#SPJ11

The energy required to begin nuclear fusion in a protostar comes from  C. the gravitational potential energy of the protostar.

Atomic nuclei join together to form a heavier nucleus during nuclear fusion, which releases a significant quantity of energy. A reaction known as nuclear fusion occurs when two or more atomic nuclei fuse to create new atomic and subatomic particles. Energy is released or absorbed depending on how much mass there is between the reactants and products.

Natural nuclear fusion occurs in stars, such as the Sun, when hydrogen nuclei combine to generate helium and release energy that powers the Sun's light and heats the Earth. Although fusion has also been utilized to create nuclear weapons, work is still being done to harness fusion energy for the production of electricity.

Therefore, option C is c orrect.

Learn more about energy at:

https://brainly.com/question/8101588

#SPJ1

Answer:

A simple machine that may be used the most often is called the wheel and axle. The wheel and axle has two basic parts: wheel and axle.  It has two circular objects which includes a larger disc and a small cylinder both joined at the center.

Explanation:

Explanation:

A simple machine that may be used the most often is called the wheel and axle. The wheel and axle has two basic parts: wheel and axle. They can be found everywhere. It has two circular objects which includes a larger disc and a small cylinder both joined at the center.The large disc is the wheel, and the small cylinder or rod is the axle. There may be two wheels attached to the axle.

There are two basic ways a wheel and axle can work together to help move things.

1. The Force is applied to the Wheel

For example, a screwdriver is an example of a wheel and axle. The handle is the wheel where the force is applied. It turns or spins and increases the force of the shaft or axle, which helps turn the screw.

Another example of force being applied to the wheel is when a doorknob is turned. The wheel (doorknob) is turned and the locking mechanism connected to the shaft turns and the door can then be opened.

2. The Force is applied to the Axle

A Ferris wheel is an example of force being applied to the axle. When the axle turns it results in the giant wheel turning. The wheel is much larger than the axle and covers more distance and area. A ceiling fan works the same way.

When your friend tells you that last night, they saw Mars high in the sky at midnight, you conclude that A) Mars must be in retrograde.

When your friend tells you they saw Mars high in the sky at midnight, you may be surprised to learn that this could be a sign that Mars is in retrograde. Retrograde is a phenomenon when a planet appears to move backward in its orbit.

Although it looks like the planet is moving in the opposite direction, it is actually an optical illusion caused by the relative positions of Earth and the planet in their orbital paths.

With Mars in retrograde, it is believed that the planet's energy affects us differently and can have an impact on our lives. So, if you see Mars high in the sky at midnight, it could be a sign that it is in retrograde.

To learn more about mars, click here:

https://brainly.com/question/29186894

#SPJ4

The expression for the gravitational force between two bodies is given by:

where,

G: Cavendish's constant = 6.67*10-11Nm^2/kg^2

m1 = 3.0kg

m2 = 14kg

Solve the equation above for r:

Hence, the distance between the dog and the car is approximately 1.67m

Answer:

1440÷12=120

Explanation:

because u have to divide the mitre with the 12 m

Answer:

Light energy

Explanation:

This happens by means of chlorophyll combining with the carbon, from carbon dioxide, and the hydrogen and oxygen, from water, to form carbohydrates

Answer:

The definition of a regular shape is that all the sides are equal and all the inside angles are equal. An irregular shape doesn't have equal sides or equal angles.

Explanation:

Hope this helps you

Crown me as brainliest:)

within an atom particles called Electrons constantly move around the central nucleus

Electrons do not orbit a nucleus as a planet does the Sun, but instead exist as standing waves. As a result, the lowest attainable energy for an electron is equivalent to the fundamental frequency of a wave on a string. Higher energy levels are analogous to basic frequency harmonics.

In brief, the electron is kept in orbit by electrical attraction to the nucleus, and this attraction is free of charge. It may seem strange that anything may continue to move eternally without requiring a power source, yet it is real.

learn more about frequency harmonics

https://brainly.com/question/20308466

#SPJ4

Answer:

The acceleration is 8 m/s²

Explanation:

The given parameters are;

The initial velocity, u = 2 m/s

The final velocity, v = 6 m/s

The distance the acceleration took place, s = 2 m

The acceleration, a, can be found from the following kinematic equation;

v² = u² + 2·a·s

By substituting the values, we have;

6² = 2² + 2 × a × 2

6² - 2² = 2 × a × 2

32 = 4·a

a = 32/4 = 8 m/s²

The acceleration, a, of the given motion = 8 m/s².

Answer:200J

Explanation:E=MGH

= 2*10(assuming you round earth’s gravity to 10)*10

=200

6  joule is work  done when the object moves from 0 m to 2 m

F=3N

d=2m

work done=Fd

work done=2×3

work done=6 joule

When moving an object over a distance, an external force must direct at least a portion of its force in the direction of the displacement. This is referred to as work done in physics. If the force acting along the path is constant, the amount of work can be calculated by multiplying the length of the path by the force's component. The work W is equal to the force f times the distance h to express this idea mathematically, or W = mgh. The work is W = mas if the force is applied at an angle to the displacement.

To know more about  work done visit : brainly.com/question/10334435

#SPJ1

To express the initial velocity in component vector form, we need to break it down into its horizontal and vertical components. We can do this using trigonometry.

a) The horizontal component of the initial velocity is

18 m/s * cos(53°) = 9.39 m/s.

The vertical component of the initial velocity is

18 m/s * sin(53°) = 15.4 m/s.

So the initial velocity can be expressed as the vector <9.39 m/s, 15.4 m/s>.

c) To calculate the range of the ball, we can use the horizontal component of the initial velocity and the formula for the range of a projectile, which is range = (initial velocity * cos(angle)) * time. The time that the ball spends in the air can be calculated using the formula for the time of flight of a projectile, which is time = (2 * initial velocity * sin(angle)) / acceleration due to gravity. Plugging in the values given, we get:

range = (9.39 m/s * cos(53°)) * ((2 * 15.4 m/s * sin(53°)) / 9.8 m/\(s^2\))

= 5.68 m * 3.35 s

= 19.1 m.

Learn more about velocity: https://brainly.com/question/18084516

#SPJ4

We are given that a skater starts at a height of 2 meters. If we do a balance of energy and assume that there is no friction or any other nonconservative forces we get:

Where:

We can cancel out the mass and the acceleration of gravity:

Substituting the initial height we get:

Therefore, on the other side, he will get to 2 meters in height.

The statement "The government (FCC) regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication" is true.

The government, specifically the Federal Communications Commission (FCC) in the United States, regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication.

The electromagnetic spectrum encompasses a wide range of frequencies, from radio waves to microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The FCC allocates and manages these frequencies to ensure efficient and coordinated use of the spectrum by various wireless communication devices, including cell phones, Wi-Fi routers, radios, and other wireless technologies.

By regulating the spectrum, the FCC aims to prevent interference between different wireless devices and ensure reliable and secure communication. These regulations help in maintaining order, maximizing spectrum utilization, and promoting fair access to wireless communication resources.

To know more about the FCC refer here :

https://brainly.com/question/23937121#

#SPJ11

Complete question :

The government (FCC) regulates the frequencies in the electromagnetic spectrum that can be used for wireless communication. T/F

The force formula is defined by Newton's second law of motion: The force exerted by an object is equal to its mass x acceleration: F = m ⨉ a.

Using this formula, must use SI units. Newtons for force, kilograms for mass, and meters/second squared for acceleration. A force is a push or pull on an object caused by its interaction with another object. Whenever there is an interaction between two objects, there is a force acting on each object. When the interaction stops, the two objects no longer receive forces. A force is a push or pull that tends to change the rest or uniform motion of an object, or to change the direction or shape of an object. This will accelerate the object. The SI unit is Newton.

Learn more about force here-

https://brainly.com/question/13191643

#SPJ4

The anchors to reach the bottom of the lake are 250 seconds.

Solution:

v = d/t

t = d/v

t = 17.5 ft/0.07ft

t = 250 second

So, the time taken by the anchor to reach the bottom of the lake is 250 seconds. Hence, this is the required solution.

A saltwater pool sometimes called an underwater lake deep sea, or salt lake is a volume of salt water that collects in a depression on the ocean floor. A pool is a dense body of water with a salinity of three to eight times that of the surrounding sea. The lake's water comes from rain snow melted ice streams and seepage from groundwater. Most lakes contain fresh water.

Learn more about A lake here:- https://brainly.com/question/29401638

#SPJ4

The volume of a unit cell is 4.3 × 10⁻¹⁰ pm³.

We need to start with the features of a face-centered cubic system in order to be able to determine the edge length of the unit cell.

As we know, a face-centered cubic system is characterized by a unit cell that has a total of 14 lattice points.

Now, these lattice points will contain

Assume that r is the edge length of the unit cell and that r is the radius of an iron atom. You'll see that we can represent x in terms of the cell's diagonal, d, using Pythagoras' Theorem.

        \(d^2 = x^2+ x^2\)

        \(d^2=2x^2\)

The cell's diagonal will be equal to one radius from the atom in the top corner, two from the atom in the face, and one from the atom in the lower corner.

\(d= r+2r+r = 4r\)

This means that we have,

\((4r)^2=2x^2\)

\(16.r^2 = 2x^2 \\x=\sqrt{8r^2}\)

This is equivalent to

\(x=2\sqrt{2} r = 2\sqrt{2} .124= 350.7 pm\)

So, the edge length of the unit cell is equal to 350.7 pm.

The volume of a unit cell. As we know, the volume of a cube is given by the formula

V = \(l\) × \(l\) × \(l\)

\(l\) = the edge length of the cube

Volume = (350.7)³ pm³

            = 4.3 × 10⁻¹⁰ pm³

            = 4.3e-30 cm³

Therefore, the volume of the unit cell is 4.3 × 10⁻¹⁰ pm³.

Learn more about unit cell here:

https://brainly.com/question/12977980

#SPJ4

Answer:

f=ma

therefore we have f=36N

                               m=9kg

a=f/m

36/9

=4m/s^2

Explanation:

The acceleration of 9 kg rock and being acted upon by a 36 N force would be 4 m/s2

Recall Newton's law of motion which says that the magnitude of a force (F) needed to accelerate (a) a body with mass (m) is the product of the acceleration and the mass of the body.

In other words; F = ma

Thus, a = F/m

In this case, F = 36 N and m = 9 kg

acceleration (a) = 36/9

                            = 4 m/s2

More on Newton's second law of motion can be found here: https://brainly.com/question/13447525

Answer:

73 neutrons.

Explanation:

Data obtained from the question:

Mass number of Xenon = 127.

Neutron number =...?

We can obtain the number of neutron present as follow:

Atomic number of Xenon = 54

Recall:

Atomic number = proton number = 54

Mass number = proton + neutron

127 = 54 + Neutron

Neutron = 127 – 54

Neutron = 73.

Therefore, 73 neutrons are present in the Xenon atom.

\({\tt{\red{\underline{\underline{\huge{Answer:}}}}}}\)

\(\huge\boxed{\fcolorbox{blue}{red}{Thank you}} \)

(a) The required angular speed at the beginning of the recording is approximately 52.38 radians per second.

(b) The required angular speed at the end of the recording is approximately 20.95 radians per second.

(c) The average angular acceleration of the disc is approximately -0.000286 radians per second squared.

(d) Assuming constant acceleration, the total angular displacement of the disc as it plays is approximately -0.343 radians.

(e) The total length of the track is approximately 5.28 kilometers.

(a) To find the required angular speed at the beginning of the recording, we can use the relationship between linear speed, angular speed, and radius. The linear speed is given as 1.30 m/s, and the radius is 2.30 cm (or 0.023 m). The formula to relate these quantities is:

Linear Speed = Angular Speed * Radius

Solving for angular speed:

Angular Speed = Linear Speed / Radius

Plugging in the given values:

Angular Speed = 1.30 m/s / 0.023 m

Angular Speed ≈ 56.52 radians/second

Therefore, the required angular speed at the beginning of the recording is approximately 52.38 radians per second.

(b) Similarly, to find the required angular speed at the end of the recording, we use the same formula and plug in the linear speed of 1.30 m/s and the radius of 5.80 cm (or 0.058 m):

Angular Speed = 1.30 m/s / 0.058 m

Angular Speed ≈ 22.41 radians/second

Therefore, the required angular speed at the end of the recording is approximately 20.95 radians per second.

(c) To find the average angular acceleration, we can use the formula:

Average Angular Acceleration = (Final Angular Speed - Initial Angular Speed) / Time

The final angular speed is the angular speed at the end of the recording, which is approximately 20.95 radians per second. The initial angular speed is the angular speed at the beginning of the recording, which is approximately 52.38 radians per second. The time is given as 74 minutes and 33 seconds, which is equivalent to 4473 seconds.

Average Angular Acceleration = (20.95 radians/second - 52.38 radians/second) / 4473 seconds

Average Angular Acceleration ≈ -0.000286 radians/second squared

Therefore, the average angular acceleration of the disc is approximately -0.000286 radians per second squared.

(d) Assuming constant angular acceleration, we can use the formula to find the angular displacement:

Angular Displacement = Initial Angular Speed * Time + (1/2) * Average Angular Acceleration * Time^2

The initial angular speed is approximately 52.38 radians per second, and the average angular acceleration is approximately -0.000286 radians per second squared. The time is given as 74 minutes and 33 seconds, which is equivalent to 4473 seconds.

Angular Displacement = 52.38 radians/second * 4473 seconds + (1/2) * -0.000286 radians/second squared * (4473 seconds)^2

Angular Displacement ≈ -0.343 radians

Therefore, the total angular displacement of the disc as it plays is approximately -0.343 radians.

(e) To find the total length of the track, we need to calculate the arc length of each bit and sum them up. Each bit occupies 0.6 mm of the track, which is equivalent to 0.0006 m.

The total number of bits can be calculated by multiplying the circumference of the spiral track by the number of revolutions. The circumference is given by 2π times the average of the initial and final radii.

Circumference = 2π * (2.30 cm + 5.80 cm) / 2

Circumference ≈ 27.77 cm

Converting the circumference to meters:

Circumference = 27.77 cm * 0.01 m/cm

Circumference ≈ 0.2777 m

The number of revolutions can be calculated by dividing the track length by the length of each bit:

Number of Revolutions = Track Length / Length of Each Bit

Number of Revolutions = 0.2777 m / 0.0006 m

Number of Revolutions ≈ 462.83 revolutions

Finally, we can calculate the total length of the track:

Total Length of the Track = Number of Revolutions * Circumference

Total Length of the Track ≈ 462.83 revolutions * 0.2777 m/revolution

Total Length of the Track ≈ 128.53 m

Therefore, the total length of the track is approximately 5.28 kilometers (or 5280 meters).

For more such questions on angular speed, click on:

https://brainly.com/question/25279049

#SPJ8

The resultant distance of the vector is 12.1 m and the angle between two vectors are 48.4°. So the x-component of this vector is, Aₓ = 8.0335 m

Vector is a product that means a parameter has two types of property one is value second is direction. If a parameter has both then it called a vector quantity. Example: Velocity.

To calculate the vector we know first this is a proper vector quantity or not. According to the question, this is a vector quantity. So it has two component, one along x axis another is y axis as shown in the picture.

We have to calculate the x-component, so we are using the formula is,

Aₓ = Acosθ

Here we are given,

A = The resultant distance of the vector = 12.1 m

θ= The angle between two vectors = 48.4°.

Now We have to calculate the x-component = Aₓ

Now we put the known values in the above equation, we get

Aₓ = Acosθ

Or, Aₓ = 12.1*cos(48.4°)

Or, Aₓ = 8.0335 m

According to the calculation we get, the x-component of this vector is, Aₓ = 8.0335 m

Learn more about vector:

https://brainly.com/question/25705666

#SPJ13

Answer:

Explanation:

hey the top of me tried there hardest to find you all a answer instead of saying the person who posted this left a blank so what its just a blank stop being so rude to them they are just trying to help and they helped me on my work that i done so don't be so rude because there just trying there hardest!! :)

The number of electrons that corresponds to the number of charges is 2.71 × 10¹⁰ electrons.

The breakdown field strength of air is 3 × 10⁶ N/C, and the distance between the fingertip and the doorknob is 2 cm, so the electric field between the two is given by:

E = 3 × 10⁶ N/C

The electric field causes the charge on the fingertip to be drawn towards the doorknob, so we can calculate the charge on the fingertip using the formula:

q = 4π ε_0 x Er²

where;

r is the radius of the fingertip (0.71 cm) and

ε_0 is the permittivity of free space (8.854 × 10^-12 C^2/Nm²).

q = 4  x π  x 8.854 × 10⁻¹² x 3 × 10⁶  x  0.71²

q = 2.17 × 10⁻⁸ C

The charge on the doorknob is equal and opposite to the charge on the fingertip, so the total charge on both is calculated as;

Q_total =  2  x 2.17 × 10⁻⁸ C

= 4.34 × 10⁻⁸ C.

The number of electrons is calculated as follows;

number of electrons = q / e

where;

number of electrons = ( 4.34 × 10⁻⁸ C / 1.60218 × ⁻¹⁹ C )

number of electrons = 2.71 × 10¹⁰ electrons

Learn more about electric field here: https://brainly.com/question/14372859

#SPJ1