Which of the following toys are accelerating?
Select all that apply.

A.) a red wagon that is rolling straight along a sidewalk at a constant speed
B.) a stuffed Tyrannosaurus rex that is standing motionless on a shelf
C.) a toy boat that is moving faster and faster as it plunges down a small
waterfall

DPP is a method of capital budgeting. It is the length of time required to recover the initial cash outflow discounted at a specific interest rate.

(i) Discounted Payback Period (DPP): It is a method of capital budgeting. It is the length of time required to recover the initial cash outflow discounted at a specific interest rate. Benefit/Cost Ratio (BCR): It is the ratio of the present value of benefits to the present value of costs. It is used in cost-benefit analysis to identify whether a proposed project or investment is feasible.

(ii) Elements of Bookkeeping: Cash book, purchase book, sales book, journal, ledger. Profit and Loss Account: It is an account that records a company's profits and losses for a specific period of time.

(iii) Common important finance ratios are: Current Ratio, Quick Ratio, Debt-Equity Ratio, Inventory Turnover Ratio, Debt-Service Coverage Ratio.

(iv) BFD, PFD & PID: Block Flow Diagram (BFD), Process Flow Diagram (PFD), and Piping and Instrumentation Diagram (PID) are used to illustrate the process flow.

(v) Gantt Chart: A Gantt chart is a project management tool that uses horizontal bars to represent the duration of tasks or activities in a project.

(vi) Ethics & Professionalism: Ethics and professionalism are the practices that professionals in a particular field must adhere to. It includes the principles of honesty, transparency, fairness, and accountability.

(vii) Heuristics for Storage Vessels and Pressure Vessels: Heuristics for storage vessels and pressure vessels include choosing the correct diameter to height ratio, selecting the right material of construction, designing suitable supports, and selecting appropriate insulation.

(viii) Heuristics for Reactors and Heat Exchangers: Heuristics for reactors and heat exchangers include determining the appropriate size and shape, selecting the right material of construction, and designing suitable internals.

(ix) Heuristics of Distillation and Absorption Towers: Heuristics for distillation and absorption towers include choosing the correct column diameter, selecting appropriate packing materials, and designing suitable feed locations.

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Answer:

The Correct Answer is

The U.S. Constitution says powers not given to the federal government belong to the states.

Explanation:

In the paragraph, Jefferson states defending the rights of states is one of the fundamental, or most significant, policies of our administration. Did that get you to remember the Tenth Amendment? It restrains the authority of the central government, defending the rights of states. It states that the central government only has the authorities listed in the Constitution. Unlisted authorities belong to the states.

Answer:

D

Explanation:

Initial velocity of the ball u = 12 m/sFinal velocity of the ball v = 0 m/sUsing the kinematic equationv² - u² = 2asHere, a is the acceleration and s is the displacement.s = v² - u²/2as = 0 - 12²/2(-9.8)m/s²s = 7.35 mThe maximum height reached by the ball is 7.35 m.

Kinematic equations are a set of equations that can be utilized to figure out unknown characteristics of motion of an object. Kinematic equations for uniform acceleration are relevant for one-dimensional motions with a uniform acceleration. Main answer: Maximum height reached by the ball is 7.35 meters. Explanation:Initially, the ball is thrown with the initial velocity u = 12 m/s.

The final velocity of the ball v = 0 m/s, when it reaches its maximum height.Here, a is the acceleration and s is the displacement.Using the kinematic equationv² - u² = 2asWe get,s = v² - u²/2aOn substituting the values of u, v and a we get,s = 0 - 12²/2(-9.8)m/s²= 7.35 mTherefore, the maximum height reached by the ball is 7.35 meters.

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Answer:

It is important to use renewal resources because we use so many non- renewable resources that we may lose the ability to make a lot of things like gasoline or power for our cities.

If a baseball has a negative velocity and a negative acceleration, its speed is decreasing.

Velocity is a vector quantity that includes both magnitude (speed) and direction. In this case, the negative velocity indicates that the baseball is moving in the opposite direction of a chosen positive reference direction. Acceleration, on the other hand, represents the rate of change of velocity and also includes both magnitude and direction.

When the velocity and acceleration have the same sign (both negative in this case), it means that the baseball is slowing down. This is because the acceleration is acting in the opposite direction to the velocity, which results in a decrease in speed. Therefore, the speed of the baseball is decreasing.

Answer:

1. and 2. If the buoyant force is greater than the object's weight, the object rises to the surface and floats. If the buoyant force is less than the object's weight, the object sinks. If the buoyant force equals the object's weight, the object can remain suspended at its present depth.

3. When the buoyant force equals one ton, it will sink no further. When any boat displaces a weight of water equal to its own weight, it floats. This is often called the “principle of flotation” where a floating object displaces a weight of fluid equal to its own weight.

Explanation:

Can anyone help me with my history question.

Answer:

The answer are B

Explanation:the two samples haves yellow color :)

Answer:

B or 2

Explanation:

both of the samples contain a yellow color.

The rate constant (k) for the reaction at 69.0 °C is approximately 4.38 × 10^8 s^(-1).

To calculate the rate constant (k) for a reaction, you can use the Arrhenius equation:

k = Ae^(-Ea/RT)

Where:

k = rate constant

A = frequency factor

Ea = activation energy

R = gas constant (8.314 J/mol·K)

T = temperature in Kelvin

First, convert the given temperature from degrees Celsius to Kelvin:

T = 69.0 + 273.15 = 342.15 K

Substitute the given values into the Arrhenius equation:

k = (4.56 × 10^11 s^(-1)) * exp(-81.7 kJ/mol / (8.314 J/mol·K * 342.15 K))

Calculating this expression gives:

k ≈ 4.38 × 10^8 s^(-1)

Therefore, the rate constant (k) for the reaction at 69.0 °C is approximately 4.38 × 10^8 s^(-1).

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Using  >,<,>,<,is greater than, comma, is less than, comma or ==equals, the answer is 777700 kilograms < 60,000,000 grams (is less than).

Mathematical signs are used to represent mathematical operations and to show relationships between mathematical expressions. Some common mathematical signs include:

These signs allow us to perform arithmetic operations, compare numbers, and express mathematical relationships in a clear and concise way.

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The correct question is:

Compare using >,<,>,<,is greater than, comma, is less than, comma or ==equals. 777 kilograms 60,000,000 gram

To determine how long it takes to complete one revolution in circular motion, we need to find the period of the motion. The period is the time it takes for the object to complete one full cycle or revolution.

In this case, we are given the parametric equations for the position of the object:

x = 8 sin(t)

y = 8 cos(t)

The parameter t represents time measured in seconds.

We can observe that the x-coordinate of the object follows the function of a sine wave, while the y-coordinate follows the function of a cosine wave. Both of these functions have a period of 2π radians.

Since one full revolution is equal to 360 degrees or 2π radians, the period of the motion is 2π.

Therefore, it takes 2π seconds to complete one revolution in this circular motion.

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The expression 3sinωt + 8cosωt can be written in the form Rsin(ωt + α) as follows:

Rsin(ωt + α) = √(3² + 8²) sin(ωt + α)

In order to express 3sinωt + 8cosωt in the form Rsin(ωt + α), we need to find the values of R and α.

To determine the value of R, we can use the Pythagorean theorem, which states that for any right triangle, the square of the hypotenuse (R in this case) is equal to the sum of the squares of the other two sides (3 and 8 in this case). Therefore, R = √(3² + 8²) = √(9 + 64) = √73.

To find the value of α, we can use the trigonometric identity: cosα = 3/R, which implies α = cos⁻¹(3/R) = cos⁻¹(3/√73).

Now we have the values of R and α, so we can express 3sinωt + 8cosωt as Rsin(ωt + α), which becomes √73 sin(ωt + cos⁻¹(3/√73)).

In summary, the expression 3sinωt + 8cosωt can be written as √73 sin(ωt + cos⁻¹(3/√73)).

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Here is a screenshot of the answer:

(The second sentence is incorrect because the triangle should be a right triangle, not an isosceles one. The fifth sentence is incorrect because we use M cos g to calculate the horizontal component.)

The force needed to start the crate sliding on a wooden floor when the coefficient of static friction is 0.40 is 7206.4 N. To find the force needed to start the crate sliding, we need to calculate the maximum force of static friction that can act on the crate.

This is given by the formula Fstatic = μs N where Fstatic is the maximum force of static friction, μs is the coefficient of static friction, and N is the normal force acting on the crate. The normal force is equal to the weight of the crate, which is given as 18016 N. Therefore, we can substitute these values into the formula:

Fstatic = 0.40 × 18016 N
Fstatic = 7206.4 N

This means that a force of 7206.4 N is needed to start the crate sliding on the wooden floor. If a force greater than this is applied, the crate will start to slide. Therefore, the force needed to start the crate sliding on a wooden floor is 7206.4 N.

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

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

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

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

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

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

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

a. Faraday.

b. Lenz.

c. Ampere.

d. Volta.

the rod reaches a steady speed, it accelerates to the right.continues to move.

A displacement how an object or particle experiences with regard to time is expressed vectorially as velocity.One meter / second (m/s) is the accepted unit of flow speed (also known as speed).

Velocity is the pace and direction of the an object's movement, whereas speed is the timekeeping that an object is travelling along a path.In other words, velocity is a vector, whereas speed is indeed a scalar value.

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The reduction potential of Mg is -2.37 V, and the reduction potential of Au is +1.50 V. Therefore, the voltage of a galvanic cell made with magnesium and gold is 1.50 V - (-2.37 V) = 2.87 V. Hence, the correct option is not in the options. The nearest option is A which is 4.2V.

The voltage of a galvanic cell made with magnesium (Mg) and gold (Au) is 2.7 V. A galvanic cell, also known as a voltaic cell, is a device that utilizes the chemical reactions that occur at the electrodes to create a flow of electricity.  In this case, magnesium and gold are used as electrodes. When the two electrodes are connected, electrons flow from the magnesium electrode to the gold electrode. The voltage of a galvanic cell can be calculated by subtracting the reduction potential of the anode from the reduction potential of the cathode. The reduction potential of the cathode is the potential required for it to gain electrons, whereas the reduction potential of the anode is the potential at which it loses electrons.

Mg(s) → Mg2+(aq) + 2 e−  E°red = −2.37 VAu3+(aq) + 3 e− → Au(s)  E°red = +1.50 V.

Therefore, the voltage of a galvanic cell made with magnesium and gold is 1.50 V - (-2.37 V) = 2.87 V.

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When air expands it is warm outside then the air is contracted and becomes cool.

The atmosphere of Earth or also known as air is the layer of gases retained by Earth's gravity that surrounds the planet and forms its planetary atmosphere.

When warm air expand,  the molecules heat and move faster makin them to move apart. So we know that air expands when heated and contracts when cooled, the reason for that is because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.

Atmospheric convection helps us to understand that as air heats up and becomes less dense, it rises higher into the air. As it reaches higher elevations, it encounters less air pressure. The lower air pressure at higher elevations allows the air to expand even more. As this air continues to expand, it begins to cool down.

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The velocity of the stone is 0 after 5 seconds

We have the function h(t) = 400 + 60t - 6t^2 that gives the height of the stone at time t.

To find the time t at which the velocity is 0, we need to find the derivative of h(t) which will give us the velocity function.

So we have;h(t) = 400 + 60t - 6t^2

h'(t) = 60 - 12t

To find the time t at which the velocity is 0, we solve

h'(t) = 0 for t;

60 - 12t = 0

⇒ 12t = 60

⇒ t = 5 s

Therefore, After 5 seconds, the stone's velocity is 0.

Hence, the answer is "t = 5"

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Answer:

4

Explanation:

cause two and two have 4 elements

Answer:

Q= -6900 J

Explanation:

use the formula Q=mC(T_2 - T_1) and sub in givens

Q=mC(T_2 - T_1)

Q= (200 g)(0.444 J/g°C)(22-100)

Q= -6900 J

The negative sign means heat is lost, which agrees with the decrease in temperature

Answer:

Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.

Explanation:

The formula for speed is speed = distance ÷ time.

Bifocal spectacles have had a significant impact on society today. They have improved the quality of life for those with presbyopia, increased safety in the workplace, advanced the field of optometry, and become a fashion accessory for many people

Bifocal spectacles, first invented by Benjamin Franklin, have had a significant impact on society today. They have allowed people with presbyopia to see both near and far objects without the need to switch between two different pairs of glasses. This convenience has improved the quality of life for many people, especially older adults who often have difficulty seeing close objects.

Bifocal spectacles have impacted society today in numerous ways. For one, they have improved the quality of life for those with presbyopia, a condition that affects the ability to focus on close objects. Bifocals allow individuals to read, use a computer, or do other close work without needing to switch glasses or take them off entirely. This convenience has allowed older adults to continue to work and participate in everyday activities with greater ease.

Another way that bifocals have impacted society is by improving safety. Many jobs require clear vision at both near and far distances, such as driving or working in construction. Bifocals make it easier for workers to perform these tasks safely and effectively. This is especially important in jobs that require split-second decisions or the ability to react quickly to changing conditions.

Bifocals have also had an impact on fashion. With a wide variety of frame styles and lens shapes available, bifocal glasses can be both functional and stylish. Many people use bifocals as an opportunity to express their personality or make a fashion statement. This has led to a greater acceptance of bifocals as a normal part of everyday life, rather than a sign of aging or poor eyesight.

In addition to these practical benefits, bifocals have also impacted society by advancing the field of optometry. The invention of bifocals by Benjamin Franklin in the 18th century paved the way for further innovation in eyewear, including trifocals, progressive lenses, and other types of multifocal lenses. Today, there are many different types of glasses available to meet the unique needs of each individual.

Bifocal spectacles have had a significant impact on society today. They have improved the quality of life for those with presbyopia, increased safety in the workplace, advanced the field of optometry, and become a fashion accessory for many people. With continued innovation in the field of eyewear, it is likely that bifocals will continue to play an important role in society for many years to come.

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Explanation:

TRUE - Two colliding objects will exert equal forces upon each other. If the objects have different masses, then these equal forces will produce different accelerations. ... FALSE - In any collision, the colliding objects exert equal and opposite forces upon each other as the result of the collision interaction.

The amount of energy needed to power a 0.20 kW bulb for one minute would be just sufficient to lift a 2.5 kg object through a vertical distance of approximately 0.49 meters.

To determine the amount of energy needed to power a 0.20 kW bulb for one minute, we first need to calculate the total energy consumption.

The power (P) of the bulb is given as 0.20 kW (0.20 kilowatts). Since power is defined as energy per unit time, we can calculate the energy consumption using the formula:

Energy (E) = Power (P) * Time (t)

Converting the time to seconds (since power is given in kilowatts):

Time (t) = 1 minute = 60 seconds

Substituting the values into the formula:

Energy (E) = 0.20 kW * 60 s

Energy (E) = 12 kilojoules (kJ)

Therefore, the amount of energy needed to power the 0.20 kW bulb for one minute is 12 kJ.

To determine the vertical distance through which a 2.5 kg object could be lifted using this energy, we can use the formula for potential energy:

Potential energy (PE) = m * g * h

Where m is the mass of the object, g is the acceleration due to gravity, and h is the vertical distance.

Rearranging the formula to solve for h:

h = PE / (m * g)

Given that the mass of the object (m) is 2.5 kg and the acceleration due to gravity (g) is approximately 9.8 m/s²:

h = 12 kJ / (2.5 kg * 9.8 m/s²)

h = 0.49 meters (rounded to two decimal places)

Therefore, the amount of energy needed to power a 0.20 kW bulb for one minute would be just sufficient to lift a 2.5 kg object through a vertical distance of approximately 0.49 meters.

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Answer:

See below

Explanation:

One rotation is 2 pi R

2 pi / 20 s = .314 R/s     ( or   pi / 10   R/s)

(NOTE: mass of the body is irrelevant)

To find the probability of each defect, we divide the frequency of each defect by the total frequency of all defects.

The probability of each defect is found by dividing the frequency of that particular defect by the total frequency of all defects. The total frequency of all defects is calculated by summing up the frequencies of all the defects. Then, the frequency of each defect is divided by the total frequency to obtain the probability.

For example, to find the probability of Excess adhesive, we divide its frequency (190) by the total frequency of all defects (822). Similarly, we calculate the probability for each defect by dividing its frequency by the total frequency.

These probabilities represent the relative likelihood of each defect occurring out of the total defects observed on the printed circuit board.

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Answer;

Motion: A body is said to be in motion if it changes its position with respect to its surroundings.

Explanation:

Rest and motion are the relative terms because they depend on the observer's frame of reference. So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body .

one example for each. Rest: If a body does not change its position with respect to its surroundings, the body is said to be at rest. ... Motion: A body is said to be in motion if it changes its position with respect to its surroundings.