An object rotates from θ1 to θ2 through an angle that is less than π radians. Which of the following results in a positive angular displacement?
A) θ1 = 45°, θ2= −45°
B) θ1 = 45°, θ2= 15°
C) θ1 = 45°, θ2= −45°
D) θ1 = 135°, θ2= −135°
E) θ1 = −135°, θ2= 135°

The answers for question numbers 3 and 4 is correct. For question number 9, the average speed is 2.5 mi /hr and for question number 10 the speed is 5 yards / s.

We know that,

v = d / t

where,

v = Speed

d = Distance

t = Time

1 ) v = 360 / 6 = 60 km / h

2 ) v = 120 / 3 = 40 mi / h

3 ) v = 18 / 6 = 3 m / s

4 ) v = 1000 / 20 = 50 m / min

5 ) t = 6pm - 5 pm = 1 hr

    v = 2.5 / 1 = 2.5 mi / hr

6 ) v = 1.5 / 0.33 = 4.5 mi / hr ( Since 20 min = 20 / 60 = 0.33 hr )

   d = 4.5 * 1 = 4.5 mi

7 ) d = 20 * 1 = 20 mi ( Since 60 min = 1 hr )

8 ) d = 60 * 2 = 120 mi

9 ) Distance per lap = 0.5 mi

     Total laps = 10

     Total distance = 10 * 0.5 = 5 mi

     v = 5 / 2 = 2.5 mi / hr

10 ) v = 100 / 20 = 5 yards / s

Therefore, the answer for:

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Answer:

once a week

Explanation:

once a week so answer B

Answer:

B-Once a week

Explanation:

You answer is B-Once a week

Answer:

The statement is not correct.

Explanation:

To know if the statement is correct, we shall determine the velocity of the car after 3 s. This is illustrated below.

Data obtained from the question include:

Initial velocity (u) = 0 m/s

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) = 3 s

Final velocity (v) =?

v = u + gt

v = 0 + (9.8 × 3)

v = 0 + 29.4

v = 29.4 m/s

Thus, the velocity of the car after 3 s is 29.4 m/s.

Hence, the statement made by the friend is not correct as the car has a falling velocity of 29.4 m/s after 3 s.

Answer:

The sound waves from a radio speakers

Explanation:

The maximum displacement of the block from its equilibrium position is 0.063 meters.

To solve this problem, we can first find the initial potential energy stored in the spring by using the formula: PE = 0.5kx^2, where k is the spring constant and x is the initial displacement from equilibrium (which is zero). Thus, the initial potential energy is 0 J. Then, we can use the principle of conservation of energy to find the maximum displacement of the block from its equilibrium position. Since there is no external work done on the block-spring system, the initial kinetic energy of the block is converted entirely into potential energy stored in the spring when the block reaches its maximum displacement. Using the formula for kinetic energy, KE = 0.5mv^2, where m is the mass of the block and v is the initial velocity, we can find the initial kinetic energy to be 1.44 J. Setting the initial kinetic energy equal to the final potential energy, we can solve for x to find the maximum displacement of the block from its equilibrium position to be 0.063 meters.

It is important to note that the almost instantaneous hit with the hammer means that we can assume the time interval over which the force is applied to be very short and thus the impulse of the force can be treated as an instantaneous change in momentum of the block. Therefore, the conservation of momentum principle can be ignored in the problem.

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The time it takes you to slow to 5 m/s will be 5 seconds. Newton's first equation of motion is employed in a given problem.

The change of displacement with respect to time is defined as the velocity.  Velocity is a vector quantity. it is a time-based component.

Given information;

Final velocity,v= 5 m\sec

Initial velociyt,u=20 m/sec

Acceleration,a=- 3m/s²

Time period,t=-?

From Newton's first equation of motion as;

\(\rm v = u+at \\\\ t= \frac{v-u}{a} \\\\ t= \frac{5 \ m/sec -20 m/sec }{-3 \ m/sec^2} \\\\\ t= 5 \ sec\)

Hence, the time it takes you to slow to 5 m/s will be 5 seconds.

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Answer:There are total four forces acting on the bicyclist namely, gravitational force, normal force, pushing force and air drag.

The magnitude of net force acting on the bicyclist is 165 N.

The required magnitude of force generated for the pedaling is of 225 N.

Given data:

The mass of bicyclist is, m = 75.0 kg.

The magnitude of acceleration is, .

The magnitude of drag force is, F = 60.0 N.

(1)

There are in total 4 forces acting on the bicyclist:

The gravitational force on the bicyclist, acting vertically downward, of magnitude , where m is the mass of the bicyclist and g is the acceleration due to gravityThe normal force exerted by the floor on the bicyclist and the bike, N, vertically upward, and of same magnitude as the gravitational forceThe force of push F", acting horizontally forward, given by the push exerted by the bicyclist on the pedalsThe air drag, F, of magnitude F = 60.0 N, acting horizontally backward, in the direction opposite to the motion of the bicyclist

(2)

The magnitude of net force acting on the bicyclist is given as,

Thus, the magnitude of net force acting on the bicyclist is 165 N.

(3)

We need to find the forward force of push, F'', which is actually the force generated during pedaling.

Then the expression for the forward pushing force F" is given as,

Thus, we can conclude that the force  generated for the pedaling is of 225 N.

Explanation:

The magnitude of the net force on the bicyclist was 0 N.

Her pedaling is generating  a force of  50 N in opposite of the drag force .

Force is defined in physics as: the push or pull on an object with mass that causes it to change velocity. Force is an external agent that can change the state of rest or motion of a body. It has a magnitude as well as a direction.

A spring balance can be used to calculate force.

As the bicyclist (including the bicycle) is pedaling right with a constant speed, the magnitude of the net force on the bicyclist was = mass × acceleration

= 70 kg × 0 m/s²

= 0 N.

Again her pedaling is generating  a force = drag force = 50 N in opposite of the  drag force . So that, net force on it becomes zero.

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The depth range that shows the strongest effects of human activity is between 0 and 200 meters. This is evident from the graphs because the greatest changes in both dissolved oxygen and pH occur.

A graph is a visual representation of a set of data points, where the data points are plotted in a coordinate system. Graphs are useful for quickly understanding relationships between different sets of data, by displaying the data points in an easily understandable visual format. Graphs can help both individuals and businesses to make better-informed decisions, as they can quickly and clearly display trends, correlations, and other data insights. Graphs are commonly used in fields such as mathematics, engineering, business, and economics.

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Complete Question

Using data from the graphs, identify the depth range that shows the strongest effects of human activity. Explain your answer.

The same double-slit experiment is then immersed in water (with an index of refraction of 1.33) and repeated. Interference fringes are more closely spaced than in air by a factor of 1.33.

The double-slit experiment is a proof in modern physics that light and matter can exhibit properties of both classically defined waves and particles. It also shows that quantum mechanical phenomena are fundamentally probabilistic.

The influence on fringe width will be less pronounced if the Young's double-slit device is submerged in water. Light has a shorter wavelength in water than it does in air. As a result, the fringe will be narrower. λD/d is the formula for fringe width. Therefore, as the wavelength of light lowers in water, the fringe width also does.

Therefore, interference fringes are more closely spaced than in air by a factor of 1.33.

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Answer:

A. Aplastic skeleton that shows all the bones of the body

Explanation:

because physical means like 3D and not on paper or in technology.

A pressure of F = 42.2 N exerted on the brink of the disk rotates the disk 1/four of a revolution from equilibrium. The angular frequency of oscillation of this torsion pendulum is 3.264 rad/sec.

τ = k\(\theta\)

torque = F x r = 42.2 N * 0.71 m

\(\theta\)= \(\pi\)/2

so, k = 19.074

\(\begin{displaymath} \omega =\sqrt{\frac{k}{I}}. \end{displaymath}\)

here \(I_2=\frac{mr^2}{2}\)

so, I = 7.1* (.71^2)/2 = 1.79 kg-m^2

so, angular frequency w = 3.264 rad/sec

Angular frequency, also known as angular velocity, is a measure of the rate of change of an object's angular displacement over time. It is represented by the symbol "ω" and is measured in radians per second. Angular frequency is closely related to the concept of circular motion. When an object moves in a circular path, its position and orientation change over time.

The angular frequency of this motion describes how quickly the object rotates about its center, in units of radians per second. Angular frequency is a fundamental concept in physics and engineering, and it is used to describe a wide range of phenomena, from the motion of planets around the sun to the vibration of atoms in a molecule.

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Complete Question:-

A torsion pendulum is made from a disk of mass m = 7.1 kg and radius R = 0.71 m. A force of F = 42.2 N exerted on the edge of the disk rotates the disk 1/4 of a revolution from equilibrium.

What is the angular frequency of oscillation of this torsion pendulum?

Answer:

a hypothesis is a explanation made on the basis of limited evidence

Explanation:

Answer:

an hypothesis is an educated guess  based on what you already know

Explanation:

hope this helps

(a) For constructive interference the two waves will have higher amplitude of 10 cm.

(b) For destructive interference the two waves will have zero amplitude.

For constructive interference the two waves will have higher amplitude after constructive interference.

Resulting amplitude = 5 cm + 5cm = 10 cm

For destructive interference the two waves will have zero amplitude after destructive interference.

Resulting amplitude = 5 cm - 5cm = 0

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Answer:

It demonstrates that the narrator is surrounded by nature.

Explanation:

Walt Whitman's "Crossing the Brooklyn Ferry" is a free verse poem written about the speaker's return trip on a ferry. He talks about his daily commute on the Brooklyn ferry, like the other commuters, and how they all share the same experience.

The given lines are from the very first stanza of the poem. The speaker repeats "face-to-face" when talking about nature. He sees the "flood-tide below" and the "clouds" high in the sky. This repetition demonstrates that he is surrounded by nature, amidst the throng of people around him. This shows the speaker's attitude of seeing the beauty of nature in any way he can, despite the bustle of commuting from Brooklyn to Manhattan.

Thus, the correct answer is the second option.

Answer:

B

Explanation:

edge 2023

Answer:

A is the answer!

Explanation:

Edge 2021

Answer:

A

Explanation:

Edge

The question pertains to a discrete random process with sample functions that have constant values in time. The probabilities associated with these values are given. The task is to determine the ensemble average of the random variable associated with the sample functions.

In this problem, we have a discrete random process with sample functions that take on constant values in time. The values 1, 2, and 3 occur with probabilities 0.6, 0.3, and 0.1, respectively. The ensemble average of a random variable associated with these sample functions can be determined by multiplying each value by its corresponding probability and summing the results. In this case, since the sample functions have constant values, the random variable takes on the same values with the associated probabilities. Therefore, the ensemble average, denoted as E[X()], can be calculated as (1 * 0.6) + (2 * 0.3) + (3 * 0.1).

The unique keywords in the explanation are "discrete random process," "sample functions," "ensemble average," and "probabilities." These terms highlight the key concepts in the problem, including the nature of the random process, the specific values of the sample functions, the calculation of the ensemble average, and the probabilities associated with each value.

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During daytime, the positions of the three bodies - the Sun, Moon, and Earth - are as follows: The Sun is located above the horizon, providing the primary source of light and illuminating the sky.

The Earth is beneath the Sun, with the observer standing on its surface. The Moon, although present in the sky, may or may not be visible, depending on its phase and position relative to the Sun and Earth.

During nighttime, the positions change. The Sun is located on the opposite side of the Earth, causing the sky to darken. The Moon may be visible, appearing in various phases depending on its position in its orbit around the Earth.

Overall, the positions of the Sun, Moon, and Earth change throughout the day and night due to the rotation and orbiting motion of the Earth and Moon.

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Answer:

The gas will change to a liquid

Explanation:

Basically condensation happens

Ultimately, the decision to pursue a career with any specific airline, including an AAG carrier, would depend on an individual's personal preferences, career goals, and evaluation of the opportunities and benefits offered by the airline.

The American Airlines Group (AAG) is a major airline holding company that owns and operates several airlines, including American Airlines, Envoy Air, Piedmont Airlines, and PSA Airlines. American Airlines is the largest and most well-known carrier among them. Whether someone wants to fly for an AAG carrier or any other airline depends on various factors, including personal preferences, career goals, and individual circumstances. Some potential reasons why someone might aspire to work for an AAG carrier or any major airline could include Career opportunities: Major airlines often offer a wide range of career opportunities, from pilot and flight attendant positions to various roles in management, operations, customer service, and more. Working for a large airline group like AAG can provide potential career growth and advancement opportunities.

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Answer:

Alpha decay forms new element with two fewer protons and two fewer neutrons, Beta decay forms new element with one more proton and one fewer neutron. Gamma decay forms NO new element, but now the element has less energy because energy is released as gamma rays.

Explanation:

ANSWER AND EXPLAINATION:
Gamma decay differs from alpha and beta decay in several ways:

1. Particle emitted: In gamma decay, no particles are emitted. Instead, a high-energy photon called a gamma ray is released. Alpha decay involves the emission of an alpha particle, which consists of two protons and two neutrons. Beta decay involves the emission of either a beta-minus particle (an electron) or a beta-plus particle (a positron).

2. Mass and charge: Gamma decay does not change the mass or atomic number of the nucleus since no particles are emitted. Alpha decay reduces the atomic number by 2 and the mass number by 4, as an alpha particle is emitted. Beta decay changes the atomic number, with beta-minus decay increasing it by 1 and beta-plus decay decreasing it by 1. The mass number remains the same in beta decay.

3. Penetrating power: Gamma rays have the highest penetrating power among the three types of decay. They can pass through most materials and require dense shielding (e.g., lead or concrete) to attenuate them. Alpha particles have low penetrating power and can be stopped by a sheet of paper or a few centimeters of air. Beta particles have intermediate penetrating power and can be stopped by a few millimeters of aluminum.

4. Energy release: Gamma decay releases energy in the form of high-energy photons. Alpha decay releases a significant amount of energy since an alpha particle carries substantial kinetic energy. Beta decay releases energy in the form of the kinetic energy of the emitted beta particle.

gamma decay is a process that involves the emission of high-energy photons, while alpha and beta decay involve the emission of particles with mass and charge. Gamma rays have higher penetrating power and do not cause changes in the mass or atomic number of the nucleus, distinguishing them from alpha and beta particles.

Answer:

Charging by friction

Explanation:

Two different materials are rubbed against each other and acquire opposite charges when separated. During this process, electrons get transferred from one material to the other through contact and friction.

Answer:Thermometer

Explanation:

High-intensity interval training (HIIT) can be included in a training plan to improve anaerobic power in a 16-year-old sprinter.

Anaerobic power is the ability to perform short, high-intensity bursts of activity without relying on oxygen. HIIT involves alternating periods of high-intensity exercise with periods of rest or lower intensity exercise. This type of training has been shown to improve anaerobic power in athletes. A track coach may design a HIIT program that includes sprints, plyometric exercises, and resistance training to improve the sprinter's power and speed.

However, it is important for the coach to consider the individual athlete's current fitness level and adjust the intensity and volume of the program accordingly to avoid injury and overtraining. Adequate rest and recovery time should also be included in the training plan to allow for proper adaptation and improvement in performance.

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Answer:

23.63 m/s

Explanation:

We can assign the bottom of the hill to have zero potential energy.

Thus, the car has only potential energy at the top of the hill.

At the bottom of the hill, all of the potential energy is converted into kinetic energy.

Therefore, initial potential equals final kinetic:

\(\displaystyle U_i = KE_f\)

Substitute:
\(\displaystyle mgh_i = \frac{1}{2}mv_f^2\)

Solve for final velocity:

\(\displaystyle v_f = \sqrt{2gh_i}\)

Therefore, the velocity of the car at the bottom of the hill is:
\(\displaystyle \begin{aligned} v_f & = \sqrt{2(9.8\text{ m/s$^2$})(28.5\text{ m}) \\ \\ & = 23.63\text{ m/s} \end{aligned}\)

In conclusion, the velocity of the car at the bottom of the hill is about 23.63 m/s.

Answer: B 3.0

Explanation:

Light bulbs can be used to indicate current flow in a circuit. The brightness of a bulb is proportional to the amount of current passing throw it. The figure shows a battery, a switch, two light bulbs, and a capacitor that is initially uncharged The brightness of a lightbulb is given by its power. P = I2R, and so brightness depends on current and resistance

A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated. [622 Charge carriers, which can be any of a number of particle kinds depending on the conductor, are the moving particles. Electrons flowing over a wire are frequently used as charge carriers in electric circuits. They can be electrons or holes in semiconductors. Ions are the charge carriers in an electrolyte, whereas ions and electrons are the charge carriers in plasma, an ionized gas.

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The equations mentioned by Emily in the valuation analysis for Aspeon are as follows:

1) Equation (1): This equation represents the value of equity (S) and calculates it based on the EBIT (earnings before interest and taxes), the tax shield provided by debt (D), and the required return on debt (kd) and equity (ks). It implies that the value of equity is equal to the adjusted EBIT after deducting the tax shield from debt.

2) Equation (2): This equation calculates the total enterprise value (V) by adding the value of equity (S) and debt (D). It represents the total worth of the company, considering both equity and debt.

3) Equation (3): This equation calculates the price per share (P) by dividing the total enterprise value (V) minus the initial debt (D0) by the number of shares (n0). It represents the price per share based on the valuation of the company.

4) Equation (4): This equation calculates the new number of shares (n1) by subtracting the dividend (D) from the initial number of shares (n0) divided by the price per share (P). It represents the adjusted number of shares after the payment of dividends.

5) Equation (5): This equation calculates the levered value (VL) by adding the unlevered value (VU) with the tax shield value (TD). It represents the value of the company after considering the tax advantages of debt.

These equations provide a framework for valuation analysis, considering factors such as earnings, taxes, debt, and equity. They help assess the value and financial implications of Aspeon's growth prospects.

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gas is the answer for this question

can you make me a brainlist

Answer:

A stronger force changes increases velocity more due to increased acceleration on the object if the mass is constant as compared to a weaker force.

Explanation:

Force affects how objects behave in terms of motion, direction, shape etc. When an object is in a state of rest, then force is applied, the object starts to move is a particular direction. Increase in the force applied will make the object to speed up which is to say the velocity will increase.

For example:

When a ball is kicked with a player with a force of 10 N the velocity of the ball is recorded to be 3 m/s. When the player is replaced with a kid the force on the ball is 2 N and its velocity is recorded to be 0.3 m/s.

Reasoning

Increased in force applied on an object increases its acceleration resulting to a higher velocity of the object.

F= m * a --------if  mass is constant , increased force will increase acceleration and speed up the object.