a metal hoop with mass 1.0-kg and a radius of 0.5 m has a translational velocity of 2.0 m/s as it rolls without slipping. the angular momentum of this hoop about its center of mass is

Therefore, option (b) is the correct answer. It is important to note that increasing the speed of the ball will also increase its kinetic energy and potential energy, as well as the tension in the string.

The force on the string holding the ball swinging in a circle is related to the speed and mass of the ball. When the ball is moved twice as fast, the force on the string will increase. This increase in force can be calculated using the equation F = mv²/r, where F is the force on the string, m is the mass of the ball, v is the velocity of the ball, and r is the radius of the circle. As the velocity of the ball is doubled, the force on the string will be four times as great. This is because velocity is squared in the equation.

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A Brnsted-Lowry acid or Lewis acid is a molecule or ion that can either donate a proton (the hydrogen ion, H+) or establish a covalent bond with an electron pair. 

Proton donors, also known as Brnsted-Lowry acids, are the first class of acids. Proton donors, also referred to as Arrhenius acids, generate the hydronium ion H3O+ under the unique situation of aqueous solutions.

The Arrhenius theory was expanded upon by Brnsted and Lowry to take non-aqueous solvents into account.

A hydrogen atom is typically bound to a chemical structure in a Brnsted or Arrhenius acid that is still energetically advantageous after the loss of H+. Aqueous Arrhenius acids have distinguishing characteristics that serve as a useful definition of an acid.

Therefore, A Brnsted-Lowry acid or Lewis acid is a molecule or ion that can either donate a proton (the hydrogen ion, H+) or establish a covalent bond with an electron pair. 

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If an object with a mass of 100g has a weight of 1 N on Earth, the volume of water displaced by the object​ is 100 cm³.

To find the volume of water displaced by the object, take the formula:

Volume = Mass ÷ Density

According to question:

Mass of the object = 100g

Density of water = 1g/cm³

Change the mass to kilograms:

Mass = 100g ÷ 1000 = 0.1kg

By using the formula, it is possible to find the volume of water displaced:

Volume = 0.1kg / 1g/cm³

= 0.1kg / 1g/cm³ × 1000g/1kg × 1cm³/1g

= 0.1 × 1000 cm³

= 100 cm³

Thus, the volume of water displaced by the object​ is 100 cm³.

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Two representations that are most consistent with the model of an atom that uses probability to locate electrons are :

1. Quantum mechanical model

2. Bohr's model

The probability of an electron is represented as electron probability function and is written as - 4πr2drψ2, where ψ is complex conjugate. The quantum mechanical model explains the probability of finding an electron in the three-dimensional space around the nucleus. It is based on solutions of the Schrödinger equation. The Schrödinger model assumes that the electron is a wave and  describes the space regions where electrons are most likely to be found.

The energy E of the quantum is related to the frequency ν by E = hν, where h is Planck's constant.

Bohr's model consists of a small nucleus that is positively charged and surrounded by negative electrons moving around the nucleus in the orbit. Bohr found that an electron positioned away from the nucleus has more energy than the electron which is closer to nucleus.

l = nh /2π  ; where,

l= angular momentum

n= principal quantum number

h=Planck's constant

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It is difficult to determine exactly what might be under the ground without further investigation. However, it is likely that there are magnetic materials or mineral deposits present that are affecting the orientation of the magnet.

If the suspended magnet still appears to orient itself, it could be due to the presence of a magnetic field. This magnetic field could be coming from various sources such as underground mineral deposits, buried metals, or even the Earth's own magnetic field. The orientation of the magnet could be influenced by these magnetic fields regardless of whether it is indoors or outdoors.

If it is convenient to take a suspended magnet outside, the orientation may still happen depending on the magnetic fields present in the area. It is possible that there are magnetic materials or mineral deposits in the ground that are influencing the orientation of the magnet. Alternatively, the Earth's own magnetic field could also be playing a role.

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Answer:

The last option

Explanation:

The amount of energy absorbed (eV) by a photon can be calculated using the formula: Energy (eV) = Planck's constant (eV s) × speed of light (m/s) / wavenumber (cm^-1).

Step 1:

To calculate the amount of energy absorbed (eV) by a photon given the wavenumber, you can use the formula: Energy (eV) = Planck's constant (eV s) multiplied by the speed of light (m/s) divided by the wavenumber (cm^-1).

Step 2:

When it comes to calculating the energy absorbed by a photon, the wavenumber is an essential parameter. The wavenumber represents the number of waves per unit distance and is usually measured in reciprocal centimeters (cm^-1). In order to determine the energy absorbed by a photon in electron volts (eV), you can utilize the following formula:

Energy (eV) = (Planck's constant × Speed of light) / Wavenumber

Planck's constant is denoted by the symbol "h" and has a value of approximately 4.1357 × 10^-15 eV s. The speed of light, represented by "c," is approximately 2.998 × 10^8 meters per second. By dividing the product of Planck's constant and the speed of light by the wavenumber, you can obtain the energy absorbed by the photon in electron volts.

In simpler terms, the formula states that the energy of a photon is directly proportional to its frequency. As the wavenumber increases, indicating a higher frequency, the energy absorbed by the photon also increases. Conversely, a decrease in wavenumber corresponds to a lower frequency and a decrease in the energy absorbed.

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If the degree of the numerator is greater than or equal to the degree of the denominator in a rational function, then the fraction is called an improper fraction.

An improper fraction is a mathematical expression that represents a value greater than or equal to one. It is characterized by having a numerator that is equal to or greater than the denominator.

When the numerator's degree is greater, it means that the polynomial in the numerator has more terms or a higher power than the polynomial in the denominator.

This implies that the value of the fraction is not a proper fraction, where the numerator is typically smaller than the denominator. Instead, it is an improper fraction that can be expressed as a whole number plus a fraction part.

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(5a) The standard form of 0.00658 is 6.58 x 10⁻³.

(5b) 0.00658 to 2 significant figures is 0.01

(6) 0.2 as fraction is 1/5.

A standard form is a form of writing equations, numbers, or expressions using a certain set of rules.

It is also a method of writing figures used by scientists to write large numbers in a more precise or condensed form.

0.00658 can be written in standard form as follows;

0.00658 becomes 6.58 x 10⁻³

0.00658 to 2 significant figures is written as;

Writing 0.2 as fraction is done as shown below;

= (0.2) x (10 / 10)

= (0.2 x 10) / (10)

= 2 / 10

= 1 / 5

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The tension in the cable on the right is 550 lbs, and the tension in the cable on the left is also 550 lbs when supporting the 1100-lb weight.

For determining the tension in each cable, consider the given weight of 1100 lbs. Since the weight is supported by two cables, assume that each cable shares an equal portion of the load.

Denote the tension in the cable on the right as \(T_1\) and the tension in the cable on the left as \(T_2\). Since the weight is balanced and the cables are vertical, the total tension in both cables should be equal to the weight.

Therefore, have the equation:

\(T_1 + T_2 = 1100 lbs\)

Since both cables share the weight equally, can set up another equation:

\(T_1 = T_2\)

By substituting the value of \(T_1\) from the second equation into the first equation:

\(T_2 + T_2 = 1100 lbs\\2T_2 = 1100 lbs\\T_2 = 550 lbs\)

Since \(T_1\) is equal to \(T_2\), can conclude that the tension in each cable is 550 lbs.

In conclusion, the tension in the cable on the right is 550 lbs, and the tension in the cable on the left is also 550 lbs when supporting the 1100-lb weight.

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when you switched from elastic material to string, the effect is that the elasticity of the two materials is different, because impulse is a physical vector quantity defined as the product of the average force applied to a body and the time interval. Impulse can also be defined from the variation in the amount of movement suffered by a body.

Impulse is a physical quantity that measures the change in the amount of movement suffered by a body on which a force acts (F) during a time interval (Δt). Impulse is a vector quantity, that is, it has magnitude, direction and direction, and its unit in the international system of units (SI) is kg.m/s or, simply, N.s.

The main use of momentum in Physics is aimed at the study of collisions between bodies. During collisions, it is common for the mutual forces exerted between the bodies to be variable, making it necessary to use the impulse to calculate the velocities or the quantities of movement of the bodies involved in the collisions. The idea is simple: if we can measure the time interval of a collision, we will be able to determine the average value of the force exerted on the bodies."

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The vehicle that is traveling  at a 13 m/s has a velocity expressed in miles per hour of: 29.016 miles/h

To solve this problem the we have to do the conversion of units with the given information.

Information about the problem:

By converting the velocity units from  (m/s) to miles per hour (miles/h) we have:

v = 13 m/s * 1 km/1000 m * 0.62 miles/ 1 km * 3600 s/1 h

v = 29.016 miles/h

It is the transformation of a value expressed in one unit of measurement into an equivalent value expressed in another unit of measurement of the same nature.

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Answer:

Retraction

I hope this helps:)

The separation of white light into its component colors is called "dispersion." This phenomenon occurs due to the interaction of light with a medium, such as a prism or a droplet of water.

When white light passes through a medium, such as a prism, the different wavelengths of light that make up white light refract (or bend) at different angles as they enter and exit the prism. This bending of light is known as refraction. The degree of refraction depends on the wavelength of light, with shorter wavelengths being refracted more than longer wavelengths.

As a result of this differential refraction, white light is spread out or dispersed into a spectrum of colors, known as a rainbow. The spectrum includes colors ranging from violet (which has the shortest wavelength) to blue, green, yellow, orange, and red (which has the longest wavelength).

This dispersion of white light into its component colors is the basis for various optical phenomena, such as rainbows, prismatic effects, and the color separation in devices like spectrometers or cameras that use prisms or diffraction gratings to analyze light.

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Acceleration is the rate of change of velocity of a body w.r.t time. Thus, if the acceleration of a body is 10m/s^2 , it means that the body accelerates after every second with a velocity of 10m/s.

Answer:

It means that the velocity of a body is increasing

By 10m/s

Explanation:

Your question is a bit incorrect

Acceleration's unit is m/s^2 not m/s

#1

W and Y

Y has 6electrons-->2electrons to complete octet.

W has 2electrons-->6electrons to complete octet.

#2

Z and V

V needs 7electrons to complete octet.

Z needs 1 electron to complete octet.

W and Y, Y has 6electrons-->2electrons to complete octet. W has 2 electrons --> 6 electrons to complete the octet. Z and V, V needs 7 electrons to complete the octet. Z needs 1 electron to complete the octet.

A covalent bond is formed when two atoms exchange one or more pairs of electrons. The two atomic nuclei are concurrently drawing these electrons to them. The sharing of electron pairs between atoms occurs in covalent bonds.

In contrast to polar covalent bonds, which are formed when electrons are exchanged between atoms with uneven electronegativity, electron pairs shared between atoms with equal or very similar electronegativity form nonpolar covalent bonds, such as H-H or C-H. (e.g., H–O).

Therefore, when the difference between the electronegativities of two atoms is too tiny for an electron transfer to take place to create ions, a covalent bond is formed.

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Answer: As the variable resistance increases its resistance, the current which flow through the lamp will decrease and therefore its brightness decreases. ... If the resistors are very large, they have no impact and the lamps will be the same brightness.

Explanation:

Answer:

The intensity or brightness of the bulb increases as more dry cell is added in the circuit.

Explanation:

Hope it helps :)

Answer:

do you have a picture we can see?

The actual frequency being emitted by the dolphin is approximately 862.5 Hz.

When a sound source is in motion relative to an observer, the perceived frequency of the sound changes due to the Doppler effect. The formula to calculate the perceived frequency (f') is:

f' = (v + vo) / (v + vs) * f,

where f is the actual frequency of the sound emitted, v is the speed of sound in the medium (approximately 343 m/s at room temperature), vo is the velocity of the observer relative to the medium, and vs is the velocity of the source relative to the medium.

In this case, the observer (snorkeler) is stationary, and the dolphin is approaching at a speed of 5.00 m/s. Given that the perceived frequency is 850 Hz, we can rearrange the formula to solve for the actual frequency (f):

f = f' * (v + vs) / (v + vo).

Substituting the given values into the equation:

f = 850 Hz * (343 m/s + 5.00 m/s) / (343 m/s + 0 m/s).

Simplifying the expression:

f ≈ 862.5 Hz.

Therefore, the actual frequency being emitted by the dolphin is approximately 862.5 Hz.

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Answer: 0.488  m

Explanation: I have my ways ;>

Answer:

Explanation:

Let's look at a mathematical representation of this. The equation for tis is just a souped up version of Newton's 2nd Law:

F - f = ma. It an object is moving at a constant speed, the acceleration of that object is 0. That changes this equation to

F = f which states that the applied Force equals the frictional force, choice a.

An important safety measure when we go out on a wild life encounter is to stay away from food and water sources of the wild animals.

Wild life encounters simply means times when we go into the wild to see wild animals and to understand the wild life ecosystem. This of course poses a lot of risk.

While on a wild life encounter, one of the safety measures is to stay away from food and water sources.

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Answer:

C

Explanation:

Stay away from food and water sources

Answer:

Natural areas, historical areas, and recreation areas

Answer:

the answer is B wildlife refuges

Explanation:

Answer:

3 N

Explanation:

From the question given above, the following data were obtained:

Mass of block = 100 Kg

Net force = 3 N

From the question given above, we were told that the net force acting on the block is 3 N.

Thus, 3 N remains the net force acting on the block.

a. By the work-energy theorem, the total work required to stop the car is equal to the change in its kinetic energy,

W = 0 - 1/2 (750 kg) (25 m/s)² ≈ -230 kJ

b. The car covers a distance x as it stops such that

W = (-725 N) x   ==>   x ≈ 320 m

The resultant displacement of the members of the bicycle club is A, 0.8 km South.

To find the resultant displacement, add the four displacement vectors together. The resultant displacement vector is:

R = A + B + C + D

R = (2.0 km, west) + (1.6 km, north) + (2.0 km, east) + (2.4 km, south)

R = 0.8 km, south

Add the x-components of the displacement vectors. 2.0 km + (-2.0 km) = 0 km.

Add the y-components of the displacement vectors. 1.6 km + (-2.4 km) = -0.8 km.

Find the magnitude of the resultant displacement vector.

R = √(0² + (-0.8)²) = 0.8 km

Find the direction of the resultant displacement vector.

θ = arctan(-0.8/0) = 90° south of east

Therefore, the resultant displacement of the members of the bicycle club is 0.8 km South.

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Complete question:

5.Four members of the Main Street Bicycle Club meet at a certain

intersection on Main Street. The members then start from the same

location but travel in different directions. A short time later, displacement

vectors for the four members are:

A = 2 km W

B = 1.6 km N

C = 2.0 km E

D = 2.4 km S​

what is the resultant displacement R of the members of the bicycle club:

R= A + B + C + D?

a. 0.8 km S

b. 0.4 km 450 SE

c. 3.6 km 370 NW

d. 4 km S

The first step is to convert the parallax angle of the star to distance. We can use the formula: parallax angle in arc seconds = (distance to star in parsecs)^-1 We can rearrange this equation to isolate distance: d = (parallax angle)^-1 Therefore, the distance to the star in parsecs is:

d = (0.0190 arcseconds)^-1 = 52.6 parsecs Next, we need to find the actual distance in meters. One parsec is equivalent to 3.09 × 10^16 meters. Therefore, the distance to the star in meters is: distance = (52.6 parsecs)(3.09 × 10^16 meters/parsec) = 1.63 × 10^18 meters Now, we can use the formula for time: d = vt Solving for time: t = d/v We are told to travel at half the speed of light, which is v = 0.5c, where c is the speed of light.

Therefore, the time to travel to the star is: t = (1.63 × 10^18 meters)/(0.5c) Using the speed of light, c = 3.00 × 10^8 m/s, we get: t = (1.63 × 10^18 meters)/(0.5 × 3.00 × 10^8 m/s)t ≈ 10.9 years Therefore, it would take about 10.9 years to travel to the star if traveling at half the speed of light.

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Given the following information:Mass of the system, m = 20 kg.Damping coefficient, b = 6 Ns/m.Force, F = 90 N.Frequency of applied force, f = ?Applied force angular frequency, w = 6 rad/s.Forced vibration equation:F(t) = F0 sin(wt)where F0 = 90 N and w = 6 rad/s.Under the action of the force F, the mass m will oscillate.The equation of motion for the mass-spring-damper system is given by:$$\mathrm{m\frac{d^{2}x}{dt^{2}}} + \mathrm{b\frac{dx}{dt}} + \mathrm{kx = F_{0}sin(\omega t)}$$where k is the spring constant.x(0) = 0 and x'(0) = 0.As we have the damping coefficient (b), we can calculate the damping ratio (ζ) and natural frequency (ωn) of the system.Damping ratio:$$\mathrm{\zeta = \frac{b}{2\sqrt{km}}}$$where k is the spring constant and m is the mass of the system.Natural frequency:$$\mathrm{\omega_{n} = \sqrt{\frac{k}{m}}}$$where k is the spring constant and m is the mass of the system.Resonant frequency:$$\mathrm{\omega_{d} = \sqrt{\omega_{n}^{2}-\zeta^{2}\omega_{n}^{2}}}$$At resonance, the amplitude of the system will be maximum when forced by a sinusoidal force of frequency equal to the resonant frequency.Resonant frequency:$$\mathrm{\omega_{d} = \sqrt{\omega_{n}^{2}-\zeta^{2}\omega_{n}^{2}}}$$$$\mathrm{\omega_{d} = \sqrt{(6.57)^{2}-(-2.88)^{2}} = 6.98 rad/s}$$Hence, the frequency of applied force at which resonance will occur is 6.98 rad/s.

The frequency of the applied force at which resonance will occur is ω = 2√5 rad/s.

To determine the frequency of the applied force at which resonance will occur, resonance happens when the frequency of the applied force matches the natural frequency of the system. The natural frequency can be determined using the formula:

ωn = √(K / M),

where ωn is the natural frequency, K is the spring constant, and M is the mass of the system.

Substituting the given values of K = 400 N/m and M = 20 kg into the equation, we can calculate the natural frequency ωn.

ωn = √(400 N/m / 20 kg) = √(20 rad/s²) = 2√5 rad/s.

Therefore, the frequency of the applied force at which resonance will occur is ω = 2√5 rad/s.

The correct question is given as,

M= 20kg

Fo = 90 N

ω = 6 rad/s

K = 400 N/m

C = 125 Ns/m

Determine the frequency of applied force at which resonance will occur?

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