an athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 7.28 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.39 rev/s. (a) What is the centripetal acceleration of the ball at 7.72 rev/s? (answer in m/s^2)
(b) What is the centripetal acceleration at 6.39 rev/s?

The length of the incline is 65 meter.

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

Initial speed is = 2 m/s

Final speed is = 15 m/s

Acceleration  of the skier is = gsin10° = 9.8 × sin10° m/s² = 1.7 m/s

Let the  length of the incline is l

Hence,

15² = 2² + 2×1.7×s

s = 65

Hence, the length of the incline is 65 meter.

Learn more about acceleration here:

brainly.com/question/12550364

#SPJ1

The metal's crystal structure is FCC.

Finding a metal's density to atomic weight ratio and lattice parameter value will reveal the metal's crystal structure. The ratio of density to atomic weight is about equivalent to the quantity of atoms per unit cell in the crystal structure if the metal has a density of 19.302 g/cm3 and an atomic weight of 196.97 g/mol.

One atom per lattice point in a cubic structure with a lattice parameter of 4.0786 corresponds to a simple cubic (SC), body-centered cubic (BCC), or face-centered cubic (FCC) structure. The lattice parameter and density to atomic weight ratio are most consistent with an FCC crystal structure.

Complete question is provided in the image below.

Read more about Crystal structure:

https://brainly.com/question/29398453

#SPJ4

As the electron moves in a uniform electric field, the following changes occur:

a) The electric potential at the electron's location decreases

b) The electron's associated electric potential energy decreases

c) Its kinetic energy increases

d) Its total energy remains unchanged.

This is because the potential energy is converted into kinetic energy as the electron moves from a higher potential location to a lower one. The total energy remains constant, as energy cannot be created or destroyed, only converted from one form to another.

You can learn more about kinetic energy at

https://brainly.com/question/8101588

#SPJ4

Without acceleration, the distance is 32 m, and with acceleration, the distance is 24 m shorter.

The direction of the motion is shifting, therefore an object moving at a constant speed in a circular path is still moving forward.

Newton's Second Law of Motion states that when a force is applied to a material, the mass accelerated (gains speed) (object). Riding a bicycle is a great example of how this movement law is put to use. The bulk is made up by your bicycle. Your leg muscles produce the force as they push against with the bicycle's pedals.

Initial speed v = 8 m/s

acceleration a = -1 m/s²

t = 4 sec.

distance d = v * t

= 8 m/s * 4 sec.

d = 32 m

distance with acceleration,

d' = vt + 1/2 at²

d' = 8 m/s * 4s + 1/2 * (-1 m/s²) (4s)

d' = 24 m

To know more about acceleration visit:

https://brainly.com/question/3046924

#SPJ4

The distances to stars are mainly measured in parsecs, a light-year is larger than an astronomical unit (AU), and for calculations, astronomers use the metric system. Therefore, B and C are the correct options.

The metric system refers to the international decimal system of measurement. Since it is used internationally, it is a good idea that scientists use the metric system as a standard system of measurement. Astronomy is a science, so astronomers do use the metric system, though they prefer units (such as astronomical units, light years, and parsecs) that describe very long distance since space is huge.

Astronomers use light years to measure the distances between stars. But to measure the distances (from Earth) to stars, astronomers prefer to use parsecs.

A light-year is much greater than an AU (astronomical unit). A light year is defined to be equal to 63,240 AU.

Learn more about astronomy at https://brainly.com/question/1141458.

#SPJ4

The direction of the tangential velocity at the instant the mass is at position is diagram A.

Tangential velocity is the velocity of an object along a circle or curved path, at any given point. It is the component of the velocity that is perpendicular to the radius of the circle, and it is perpendicular to the radial velocity, which is the component of velocity that points towards or away from the center of the circle.

The tangential velocity determines the speed of an object as it moves along the circular path.

Find out more on tangential velocity here: https://brainly.com/question/19660334

#SPJ1

The required electrostatic force when the charges and distance are specified is calculated to be 66.98 × 10⁻⁹ N.

The charge q₁ is given as 6.96 nC.

The charge q₂ is given as 3.86 nC.

Distance r = 1.9 m

The magnitude of the electrostatic force that one charge exerts on the other is to be found out. The force between two charges at a distance is given by the formula,

F = k q₁ q₂/r² = (9 × 10⁹ × 6.96 × 10⁻⁹ × 3.86× 10⁻⁹)/1.9² = 66.98 × 10⁻⁹ N

Thus, the required electrostatic force is calculated to be 66.98 × 10⁻⁹ N.

To know more about electrostatic force:

https://brainly.com/question/20597523

#SPJ4

angular velocity after 12.0 s = 4.50 rad/s - (0.822 rad/s^2 * 12.0s)

angular velocity after 12.0 s = 2.052 rad/s

What is angular velocity?

Angular velocity is a measure of the angular displacement over time of a rotating object. It is expressed as the rate of change of angular displacement with respect to time, and is usually expressed in radians per second or revolutions per minute. Angular velocity is considered to be a vector quantity, meaning it has magnitude and direction. It is also a measure of the speed at which an object is rotating. When an object is rotating in a circular motion, its angular velocity is the same as its tangential velocity. Angular velocity can also be used to calculate the linear velocity of an object, by multiplying its angular velocity by the radius of its circular path.

Therefore, angular velocity after 12.0 s = 2.052 rad/s

To learn more about angular velocity

Here: https://brainly.com/question/20432894

#SPJ1

Answer: -5.36

Explanation:

ik this can help you now but i was doing this problem and figured id leave this here lolz

According to the problem the Velocity amplitude (in/s-peak) is 1.827 in/s-peak.

Velocity amplitude is the maximum speed at which a particle or object is traveling in a specific direction. It is a measure of the strength of the motion expressed in terms of the magnitude of the velocity. It can be determined by measuring the maximum value of the velocity vector over a given period of time. Velocity amplitude is an important concept in physics, as it allows for the calculation of the acceleration, momentum, and energy of a particle or object. It can also be used to determine the frequency of a periodic motion, such as the frequency of a wave or the frequency of oscillation.

The equation for converting displacement amplitude to velocity amplitude is:
Velocity amplitude (in/s-peak) = (2 x Displacement amplitude (mils-p-p)) / (π x Frequency (cpm))
Therefore, the velocity amplitude in inches per second-peak for a displacement amplitude of 2.58 mils peak-to-peak at 900 CPM is:
Velocity amplitude (in/s-peak) = (2 x 2.58 mils-p-p) / (π x 900 cpm)
Velocity amplitude (in/s-peak) = (5.16 mils-p-p) / (2,827.43 cpm)
Velocity amplitude (in/s-peak) = 1.827 in/s-peak

To learn more about Velocity amplitude
https://brainly.com/question/7194591
#SPJ4

[tex]1.602 x 10^-17[/tex] is the work must we do on an electron to move it from point A, , to point B, that is at a potential of -50V, along the semicircular path.

In order to move the electron from point A to point B, we need to do work on it to overcome the electric potential difference between the two points. Since the two points have potentials of +50V and -50V respectively, the total potential difference is 100V.

Since the electric field is conservative, the work done by it depends only on the potential difference between points A and B and not on the path taken. The potential difference between points A and B is given by:

ΔV = V_B - V_A = -50 V - (+50 V) = -100 V

To move an electron from point A to point B, we need to do work on it equal to the change in its potential energy. The potential energy of an electron in an electric field is given by:

U = qΔV

where q is the charge of the electron, and ΔV is the potential difference.

The charge of an electron is:

q = -1.6 x [tex]10^{-19 }[/tex]C

Substituting the values, we get:

U = (-1.6 x [tex]10^{-19 }[/tex] C) x (-100 V)

U = 1.6 x [tex]10^{-19 }[/tex]

Therefore, we need to do work on the electron equal to 1.6 x 10^-17 J to move it from point A to point B along the given semicircular path.

To learn more about electrons visit:

brainly.com/question/860094

#SPJ4

1.8 moles of gas should be removed to decrease the volume of the container to 40 L

Avogadro's Law states that the volume of a gas is directly proportional to the number of moles (or a number of particles) of gas when the temperature and pressure are held constant.

Given, An 85 L flexible container holds 3.4 moles of gas.

This problem requires Avogadro's law, which states that the amount (moles) of a gas is directly proportional to its volume, such that if the amount increases, the volume increases and vice versa. You correctly determined the formula to use:

V = k×n or. V₁n₁=V₂n₂.

Let "x" be the number of moles in a 40l container

85/40 = x/3.4

Thus,

x = 1.8

Therefore, 1.8 moles of gas should be removed to decrease the volume of the container to 40 L

Learn more about Avogadro law here:

https://brainly.com/question/4133756

#SPJ1

Answer:

147 J

Explanation:

PE = mgh = (5.0 kg)(9.8 m/s²)(3 m) = 147 J

The area of the parallelogram is 40.60m^2.

Generally, To find the area of a parallelogram defined by two vectors, we can use the formula

A = |A x B|,

where

A and B are the two vectors.

A x B = (3*5 - 4*1, 6*5 - (-2)*1, 6*4 - (-2)*3)

    = (17, 28, 24)

|A x B| = √(17² + 28² + 24²)

       = 40.60m2

Read more about the area of the parallelogram

https://brainly.com/question/19187448

#SPJ1

Use the provided Smith charts to find the normalized input impedance of a lossless line of length l terminated in a normalized load impedance zL for each of the following combinations. l = 1.3λ, zL = 0.5 + j0.5.so, option (c) is correct.

The measure of resistance to electrical flow is called impedance, and it is denoted by the letter Z. In ohms, it is measured.

An electrical component known as a resistor controls or restricts the passage of electrical current in an electronic circuit.

Knowing about different parts, such as resistors, inductors, capacitors, power sources, connecting wires, and more, is necessary when building a circuit. Among the circuit's essential elements is the resistor.

Learn more about impendence from the given link.

https://brainly.com/question/30113353

#SPJ4

The amount of heat needed is 2812.5 Joules.

To find the amount of heat needed to increase the temperature of 5.0 moles of an ideal monatomic gas by 23K when the pressure or volume is held constant, you can use the formula Q = nCΔT, where Q is the amount of heat, n is the number of moles, C is the heat capacity of the gas, and ΔT is the change in temperature.

In this case, n = 5.0 moles, C = 24.5 (the heat capacity of an ideal monatomic gas at constant pressure), and ΔT = 23K. Therefore, the amount of heat needed is Q = 5.0 * 24.5 * 23 = 2812.5 Joules.

Learn more about the temperature:

https://brainly.com/question/25677592

#SPJ4

The electric potential at the origin is 1.079 x 10^5 V.

Electric potential is a measure of the electric potential energy per unit charge in an electric field.

The electric potential at the origin can be calculated using Coulomb's law and the principle of superposition. The electric potential at a point due to a single charge is given by:

V = k * q / r

where

The total electric potential at the origin due to all three charges is the sum of the potentials due to each charge.

Assuming the charges are all positive, the electric potential at the origin is:

V = k * q * (1/d + 1/√(2d^2) + 1/d)

Plugging in the values, we get:

V = 8.99 x 10^9 Nm^2/C^2 * 4.0 x 10^-9 C * (1/4.0 + 1/2 * 4.0 + 1/4.0) = 1.079 x 10^5 V.

Therefore, The electric potential at the origin is 1.079 x 10^5 V.

Learn more about electric potential here: brainly.com/question/26978411

#SPJ1

As a result of the magnetic interaction between the soft iron and the bar magnet, whichever pole of the magnet is closest to the iron will be attracted to the iron (option C)

A current-carrying solenoid creates its own magnetic field both inside and outside the solenoid when current is applied. The strength of the magnetic field inside the solenoid is increased when a soft iron bar or core is inserted because it magnetizes the iron bar.

The magnetic domains (small dipoles) present in the soft iron are aligned by the magnetic field of the bar magnet to produce the forces in this situation. It is possible to think of these domains as tiny perpetual current loops, and their propensity to align is known as permeability. The dipoles will be aligned to attract the pole of the bar magnet that is closest, and whichever pole of the bar magnet is nearest will dominate this alignment.

The question is incomplete, it should be:

A bar magnet oriented along the y axis can rotate about an axis parallel to the z axis. Its north pole initially points along j. Now the charge is replaced by an electrically neutral piece of initially unmagnetized soft iron (for example, a nail) that is not moving.

As a result of the magnetic interaction between the soft iron and the bar magnet, what will happen to the magnet?

Whichever pole of the magnet is closest to the iron will be attracted to the iron.

Choose the correct answer

a) The magnet will experience a torque due to the iron attracting its north pole.

b) The magnet will experience a torque due to the iron attracting its south pole.

c) Whichever pole of the magnet is closest to the iron will be attracted to the iron.

d) Whichever pole of the magnet is closest to the iron will be repelled from the iron.

Learn more about magnetic field here: https://brainly.com/question/30140913

#SPJ4

An advantage that electronic brainstorming has over traditional brainstorming: Option. It allows participants to answer anonymously.

Electronic brainstorming provides anonymity, allowing participants to contribute freely without fear of judgement.

Electronic brainstorming provides a unique advantage over traditional brainstorming in that it allows participants to answer anonymously. This means that participants can contribute freely without the fear of judgement or criticism from others.

This allows more honest and open dialogue, as participants can express their ideas without the worry of being judged or having their ideas dismissed.

Additionally, electronic brainstorming is usually more cost-effective, as there is no need to arrange a physical meeting space or provide food and beverages. This makes it an ideal choice for those looking to brainstorm without the hassle or cost of traditional brainstorming.

Learn more about brainstorming: https://brainly.com/question/1606124

#SPJ4

Electric field lines always begin at positive charges (or at infinity) and end at negative charges (or at infinity). One could also say that the lines we use to represent an electric field indicate the direction in which a positive test charge would initially move when released from rest.

The field lines show us the motion of a positive test charge on one of those field lines. As a result, the field lines point in the direction of negative charges and away from positive charges. Instead, we may state that what we need is information about the movement of negative test charges from the field lines. Then the arrows would turn around, and someone would innocently inquire about the exact opposite.

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

#SPJ4

Answer: 0.0268 m

Explanation:

Draw a free body diagram of the block.  There are three forces: weight force mg pulling down, buoyancy of the oil B₁ pushing up, and buoyancy of the water B₂ pushing up.

Sum of forces in the y direction:

∑F = ma

B₁ + B₂ − mg = 0

ρ₁V₁g + ρ₂V₂g − mg = 0

ρ₁V₁ + ρ₂V₂ = m

ρ₁V₁ + ρ₂V₂ = ρV

ρ₁Ah₁ + ρ₂Ah₂ = ρAh

ρ₁h₁ + ρ₂h₂ = ρh

(930 kg/m³)h₁ + (1000 kg/m³)h₂ = (968 kg/m³) (4.93 cm)

Since the block is fully submerged, h₁ + h₂ = 4.93 cm.

(930 kg/m³) (4.93 cm − h₂) + (1000 kg/m³)h₂ = (968 kg/m³) (4.93 cm)

h₂ = 2.68 cm

h₂ = 0.0268 m

The term which describes the increased soil erosion in the regions where sheep and cattle eat the grasses and reggianvorz is called overgrazing.

Overgrazing happens when livestock and other grazers (such as wildlife) consume more plant biomass than the vegetation can replenish in a reasonable amount of time, exposing the soil and lowering the vegetation's potential for production.

The exposure of the soil might hasten the potential for processes of water and wind erosion, which can result in soil losses. Less water infiltration into the soil might result in slower plant growth due to accelerated erosion processes and soil compaction caused by grazing animals.

Because less plant biomass is accessible as litter due to ongoing overgrazing, less soil organic matter, nutrients, and biotic activity are added to the soil. This causes the soil structure to deteriorate, which lowers the soil's capacity to store water and raises the risk of erosion.

Therefore, the term describing the given action is overgrazing.

Find more on overgrazing:

https://brainly.com/question/28916992

#SPJ9

Based on the data Thomson collected in his experiments using cathode rays, the following statements about the atomic structure were validated:

Thomson Data is a division of Thomson Reuters, a global provider of data and analytics solutions for professionals in the financial and risk, legal, tax and accounting, and media markets.

It provides access to a wide range of data sources and solutions including company data, market data, reference data, news and content, and financial services data. Thomson Data's services are used by businesses, investors, and other professionals to gain insights into the markets and make informed decisions. The company's solutions are designed to help organizations access, curate, and analyze data in order to drive better business outcomes.

Learn more about  the data Thomson:

https://brainly.com/question/13369174

#SPJ4

Freezing keeps food safe by slowing the movement of molecules, causing microbes to enter a dormant stage. Freezing preserves food for extended periods because it prevents the growth of microorganisms that cause both food spoilage and foodborne illness.

What is freezing food?

To know more about the freezing food, click the link given below:

https://brainly.com/question/9634850

#SPJ1

The bulk modulus of the iron block is given 9 × 10¹⁰ N/m². The volume change is 0.20 %. Then the pressure required for the compression is 1.8 × 10⁸ N/m².

Bulk modulus of an object is the measure of its resistance to compression. It is the ratio of infinitesimal increase in pressure to the decrease in volume.

B = ΔP/ΔV/V

  =  ΔPV/ΔV.

Given B  = 9 × 10¹⁰ N/m²

ΔV/V = 0.20/100 = 0.002

then ΔP = B ΔV/V

ΔP = 9 × 10¹⁰ N/m² × 0.002  = 1.8 × 10⁸ N/m²

Atmospheric pressure = 1 × 10⁵ N/m²

then ΔP/Patm = 1.8 × 10⁸ N/m²/1 × 10⁵ N/m² = 1800

Find more on bulk modulus:

https://brainly.com/question/15178872

#SPJ1

The upward thrust force of rocket engines must provide is 118,000 N (C)

At the precise moment of launch, the force pushing upwards and the weight acting downwards are the two forces that are acting on rockets. At the surface of the Earth, the force exerted by gravity is referred to as weight, and it may be determined by multiplying the mass in kilograms by 9.8 m/s². The upward thrust force can be calculated by this following formula:

                                                               F = m × (a +g)

Where:

F = the upward thrust force

m = the mass of the object

   = 10,000 kg

g = the acceleration due to gravity

   = 9.8 m/s²

a = the uniform upward acceleration

  = 2 m/s²

Thus, the upward thrust force of rocket engines must provide is

F = 10,000 × (2 + 9.8)

  = 118,000 Newton

To learn more about upward thrust force, click here:

https://brainly.com/question/18763386

#SPJ4

The acceleration is expressed as the product of the change in time and the change in velocity, and it is 2.3 m/s. 34.78 seconds pass before the wheels lift off the ground.

Speed is the rate at which an object travels along a path over time, whereas velocity is the speed and direction of an item's motion.

Taking the first interval, we find

a = Δvx/Δt

a = 23m/s/10m/s

a = 2.3m/s

By dividing the acceleration in m/s2 by the value of g, or the acceleration of gravity (9.81 m/s2), we may determine the jet's acceleration in g's.

ag = a/g

2.3/9,8

ag = 0.33g

When the jet reaches its takeoff velocity, which is 80 m/s, the wheels come off the ground.

The jet's velocity is zero at time t=0 s. Since we are aware that the acceleration is constant (a=2.3 m/s2), we can use the equation to determine the time t at which the jet achieves a velocity of vf=80 m/s.

vf = vi + at

Re-arranging and substituting numbers, we find

t = vf/a

t = 80/2.3

t = 34.78s

To know more about velocity visit:-

https://brainly.com/question/11252536

#SPJ4

The orbital period of a space shuttle in a 250 mile high orbit is approximately 91.3 minutes, and the orbital speed is approximately 17,500 miles per hour (7.68 kilometers per second).

This speed is determined by the gravitational pull from Earth, as well as the height of the orbit. The higher the orbit, the slower the orbital speed. For a 250 mile high orbit, the shuttle will need to maintain a constant speed in order to stay in orbit. The speed and orbital period of a space shuttle in orbit depend on a number of factors, including the height of the orbit, the mass of the shuttle, and the gravitational pull of the Earth.

Learn more about  shuttle orbit period :

https://brainly.com/question/7459650

#SPJ4

Depending on the type of material used, the length, and other factors, the conductor provides some ohmic resistance to the flow of electrons.

Because electrons in a conducting wire reject one another, a conducting wire provides resistance to the flow of electrons. The electrolyte resistance, the current collector resistance, the active mass, and the transition resistance between the current collector and active mass are added to create the ohmic resistance, or RB.

Theoretically, in accordance with Ohm's rule, the voltage at the ohmic resistance instantly follows the battery current. A substance or material that permits the flow of electricity is known as an electrical conductor. Electrical charge carriers, often electrons or ions, flow freely in a conductor.

Learn more about conductor Visit: brainly.com/question/15208203

#SPJ4

Contingent upon the sort of material utilized, the length, and different variables, the guide gives ohmic protection from the progression of electrons.

Since electrons in a directing wire reject each other, a leading wire gives protection from the progression of electrons. The electrolyte obstruction, the ongoing authority opposition, the dynamic mass, and the progress obstruction between the ongoing gatherer and dynamic mass are added to make the ohmic obstruction or RB.

Hypothetically, as per Ohm's standard, the voltage at the ohmic obstruction in a split second follows the battery current. A substance or material that allows the progression of power is known as an electrical transmitter. Electrical charge transporters, frequently electrons or particles, stream uninhibitedly in a transmitter.

To learn more about conductor Visit:

brainly.com/question/15208203

#SPJ4

The statement which is correct about the lighter dart leaves the spring moving faster than the heavy dart. Option B is correct.

This is because both darts are launched with the same initial elastic potential energy from the compressed springs, but the lighter dart has less mass than the heavier dart. According to the law of conservation of energy, the lighter dart must move faster than the heavier dart in order to have the same amount of kinetic energy as the heavier dart once it leaves the spring.

The initial potential energy is the same for both darts, and since the potential energy is converted to kinetic energy, the lighter dart must have a higher velocity than the heavier dart in order to have the same amount of kinetic energy.

Therefore, option B is correct, while options A, C, D, and E are not, as they do not accurately describe the behavior of the darts in this scenario.

To know more about the spring, here

brainly.com/question/14670501

#SPJ4

--The complete question is, A heavy dart and a light dart are launched horizontally on a frictionless table by identical ideal springs. Both springs were initially compressed by the same amount. Which of the following statements about these darts are correct?

A) The darts both have the same kinetic energy just as they move free of the spring.

B) The lighter dart leaves the spring moving faster than the heavy dart.

C) The heavy dart had more initial elastic potential energy than the light dart.

D) Both darts move free of the spring with the same speed. E) Both darts had the same initial elastic potential energy.--