A wrecking ball swings at the end of a 13.3-m cable on a vertical circular arc. The crane operator manages to give the ball a speed of 12.3 m/s as the ball passes through the lowest point of its swing and then gives the ball no further assistance. Friction and air resistance are negligible. What speed vf does the ball have when the cable makes an angle of 13.0 ° with respect to the vertical?

The term you are looking for is "chemical battery". Chemical batteries work by converting chemical energy into electrical energy through a series of chemical reactions. These reactions take place within the battery's cells, which are composed of two electrodes and an electrolyte.

When the battery is connected to a circuit, the chemical reactions produce an electrical current that can be used to power devices. Chemical batteries are widely used in many applications, including consumer electronics, electric vehicles, and renewable energy systems. They are a crucial component of our modern technological society, and ongoing research is focused on developing more efficient and sustainable battery technologies to meet growing energy demands.

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Answer:

1 m/s2

Explanation:

The net force on the block is 20 N-10 N in the direction of its acceleration, so by Newton’s law F=Ma

a=10N/10kg

=1 m/s2

Answer:

bakit po pano po mag comment sa post not bat di po ako makacomment how po

Explanation:

Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.

To estimate the distance you can travel in 4 hours and 50 minutes at an average speed of 41 miles per hour, we need to convert the time to hours.

4 hours and 50 minutes is equivalent to 4.83 hours (since 50 minutes is 50÷60 = 0.83 hours).

Now, we can calculate the distance traveled using the formula: distance = speed × time.

Distance = 41 miles/hour × 4.83 hours

Distance ≈ 198.03 miles

Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.

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Answer:

Explanation:

Yes, translations are rigid transformations. You can verify that the distances between the points are preserved.

Answer:

True

Explanation:

In translation, all points of the figure move the same distance and in the same direction. The shape and size of the image remains the same as the preimage

Answer:

To stop a car must lose its momentum and its kinetic energy. ... If the forces on two cars are equal then the greater the kinetic energy the greater the distance before stopping. But there will be a relationship to the momentum because momentum and mass are both related to the kinetic energy.

The tension in the string at the top is calculated to be 71 N and at the bottom of the string is calculated to be 1.1 × 10⁻² N.

F cent = F g + F t

where, F cent is centripetal force

F g is the gravitational force

The tension force is denoted by F t

F t = F cent - F g = (4π² R m)/T² - m g

where,

R is the radius

m is the mass

T is the time taken for one revolution

g is the acceleration due to gravity

On substituting the values,

F t = (4 × 3.14²×1)/0.97² - 2.2× 9.8 = 70.7259 N ≈ 71 N

At the bottom of the string is,

F cent = -F g + F t

F t = F cent + F g = (4 π² R m)/T² + m g = (4 × 3.14²×1)/0.97² + (2.2× 9.8) =  113.8899 N = 1.1 × 10⁻² N

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Answer:

The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure. Note that the fixed points are defined using common physical phenomena so that they can be easily reproduced.

Answer:

Steam point

Explanation:

The upper fixed point, or steam point, is the temperature of pure boiling water at normal atmospheric pressure.

Answer:

I think we still could have solar eclipse but with it blocking sun by being more small

The cross-sections of metal beams in the shape of the letter I instead of solid rectangles because I beam is used horizontally, the stress is more at the top and in the bottom, and the middle is a stress free region.

Any cross section of the beam experiences bending and shearing stresses as a result of forces and couplings operating on it.

In an I beam, high weights can be carried while weighing less than in a rectangular beam.

The cross sections of metal beams are in the shape of letter I instead of solid rectangles to reduce the weight of the beam while preserving the resistance to bending.

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The mass of Cl2 consumed if the battery delivers a constant current of 957 A for 72.0 min is approximately 150 grams.

To calculate the mass of Cl2 consumed, we can use the formula:

Mass = (Current x Time) / (Faraday's Constant x Number of Electrons Transferred)

First, let's find the number of moles of electrons transferred. Each Cl2 molecule contains 2 moles of electrons.

Number of moles of electrons transferred = Current x Time / (Faraday's Constant x Charge of Electron)

The Faraday's Constant is 96,485 C/mol, and the charge of an electron is 1.602 x 10^-19 C.

Number of moles of electrons transferred = 957 A x 72 min / (96,485 C/mol x 1.602 x 10^-19 C)

Now we can calculate the mass of Cl2 consumed. The molar mass of Cl2 is 70.906 g/mol.

Mass of Cl2 consumed = Number of moles of electrons transferred x (Molar mass of Cl2 / Number of moles of electrons in Cl2)

Mass of Cl2 consumed = Number of moles of electrons transferred x (70.906 g/mol / 2 moles of electrons)

Mass of Cl2 consumed = (957 A x 72 min / (96,485 C/mol x 1.602 x 10^-19 C)) x (70.906 g/mol / 2 moles of electrons)

Simplifying the equation gives:

Mass of Cl2 consumed = (957 A x 72 min x 70.906 g) / (96,485 C/mol x 1.602 x 10^-19 C x 2 moles)

Now we can calculate the mass of Cl2 consumed using the given values:

Mass of Cl2 consumed = (957 A x 72 min x 70.906 g) / (96,485 C/mol x 1.602 x 10^-19 C x 2 moles)

Mass of Cl2 consumed ≈ 150 grams

Therefore, the mass of Cl2 consumed if the battery delivers a constant current of 957 A for 72.0 min is approximately 150 grams.

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Technician B is correct because a refractometer is used to measure the specific gravity or concentration of a liquid, while a coolant leak from the water pump weep hole is not normal and indicates a problem with the cooling system.

Technician A is not correct, as coolant leaking out of the water pump weep hole is not normal and indicates a problem with the water pump.

Technician B is correct, as a refractometer is a device used to measure the specific gravity of a liquid by measuring the bending of light as it passes through the liquid. This is a commonly used tool in the automotive industry for measuring the concentration of antifreeze in coolant. Therefore, technician B is correct.

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Answer:

greater.

Explanation:

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-- impurities in the water

-- air pressure is higher than standard

Answer:

it's gravitational potential energy would have converted to kinetic energy half way back when it's falls

Answer:

Explanation:

its reading the caliper

as the 0 lines up w the 1/8" mark, it is 1 1/8"

Answer:

The minimum thickness will be stamped somewhere. You see there's part numbers and other things here you might need to use a wire brush to kind of clean it up but that's the thicknessUse a micrometer at the thinnest point on the surface of the rotor where it meets the pads to measure the minimum operational thickness. If your rotor needs to be cut or has worn passed this thickness, you'll need new rotors. You may also discover your rotor has Disc Thickness Variation.

The tangential speed on the outer edge of a rotating carousel is dependent on the carousel's rotational speed and the distance from the center of rotation to the outer edge.

It can be calculated using the formula: tangential speed = radius × angular speed

Where the radius is the distance from the center of rotation to the outer edge, and the angular speed is the rate of rotation measured in radians per second.

The carousel's rotational speed of a carousel refers to the rate at which it completes one full revolution, and it is usually measured in units of revolutions per minute (RPM) or radians per second (rad/s). The faster the carousel rotates, the higher the outer edge's tangential speed. The rotational speed of a carousel can be controlled by adjusting the power source that drives it, such as an electric motor.

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Answer:

√(0.7 * 9.81m/s^2 * r)

Explanation:

To determine the maximum speed at which the 800kg car can travel around the curve, the engineer needs to consider the forces acting on the car as it goes around the curve. Specifically, the engineer needs to consider the centrifugal force and the frictional force between the wheels and the road.

The centrifugal force is the force that acts on an object moving in a circular path and is directed away from the center of the circle. It is given by the equation Fc = mv^2 / r, where m is the mass of the object, v is the velocity of the object, and r is the radius of the curve.

The frictional force between the wheels and the road is given by the equation Ff = μFn, where Ff is the frictional force, μ is the coefficient of friction between the wheels and the road, and Fn is the normal force between the wheels and the road. The normal force is the force that acts perpendicular to the surface of the road and is equal in magnitude to the weight of the car (mg, where g is the acceleration due to gravity).

The maximum speed at which the car can travel around the curve occurs when the centrifugal force and the frictional force are in balance, meaning that they have the same magnitude. In this case, we can set Fc = Ff and solve for v.

Substituting the given values into the equations for Fc and Ff and setting them equal to each other, we get:

Fc = Ff

mv^2 / r = μmg

Solving for v, we find that the maximum speed at which the car can travel around the curve is:

v = √(μgr)

= √(0.7 * 9.81m/s^2 * r)

This is the maximum speed at which the car can travel around the curve without sliding or losing traction. The actual value of v will depend on the radius of the curve, which is not given in the problem.

(a) The time required to reduce the paratrooper's speed to 5.25 m/s², assuming the acceleration is constant, can be found using the formula `v = u + at`, where `v` is the final velocity, `u` is the initial velocity, `a` is the acceleration, and `t` is the time taken.

Initially, the paratrooper is falling downward at a speed of 30.3 m/s, and after the parachute opens, the upward acceleration is 69 m/s². Therefore, the net acceleration is given by:

Net acceleration = upward acceleration - downward acceleration= 69 - 9.81= 59.19 m/s²

The time taken to reduce the speed to 5.25 m/s can be found by substituting the values into the above formula as shown below:5.25 = 30.3 + 59.19t⇒ t = (5.25 - 30.3)/59.19≈ -0.421 s

Since the time can't be negative, the above estimate is invalid.

(b) The distance fallen during the time interval can be found using the formula `s = ut + 1/2 at²`. If the acceleration is not constant, an easy estimate can be obtained by taking the average of the initial and final speeds, and multiplying by the time taken, which is approximately the same as the actual distance fallen.

The average speed is given by:(30.3 + 5.25)/2 = 17.78 m/s

Therefore, the approximate distance fallen is:s ≈ ut = 17.78 × t

(a), the time taken to reduce the speed to 5.25 m/s is approximately -0.421 s, which can be disregarded since time can't be negative.

Therefore, the actual time taken is:5.25 = 30.3 + at⇒ t = (5.25 - 30.3)/a= 1.435 sSubstituting this into the above formula, the actual distance fallen is:s = 17.78 × 1.435≈ 25.50 m

Therefore, the paratrooper falls a distance of approximately 25.50 m during this time interval.

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The book "Feedback Control of Dynamic Systems 8th Edition" was written by Gene F. Franklin, J. Da Powell and Abbas Emami-Naeini.

"Feedback Control of Dynamic Systems" is a textbook that provides an introduction to control theory, feedback control, and the analysis and design of control systems. The book covers a range of topics, including mathematical modeling, feedback control, time and frequency domain analysis, stability, and controller design.

It is commonly used as a textbook in undergraduate and graduate courses in electrical and mechanical engineering, as well as in other related fields. The eighth edition of the book, published in 2019, is written by Gene Franklin, J. Da Powell, and Abbas Emami-Naeini.

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A single magnetic field is shown.

No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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Answer:

About 5 % of the universe is visible.

Estimates are that 68 % of the universe consists of "dark energy" and 27% of the universe consists of "dark matter". Currently 95 % of the universe is not currently visible to the scientists involved (cannot be explained by means that we know).

Answer:

The answer would be 0kg.

Your welcome.

According to the wave equation, v = fλ, where v is the wave speed, f is the frequency, and λ is the wavelength. If we increase the wavelength and keep the wave speed the same, the frequency of the wave will decrease.

This is because, if we increase the wavelength but keep the wave speed constant, the wave will have to take longer to complete one full cycle, which means that the number of cycles completed per second (the frequency) will be lower.

Another way to think about this is to consider the relationship between wavelength and frequency in a wave. In general, waves with longer wavelengths have lower frequencies, and waves with shorter wavelengths have higher frequencies. This is because the wavelength represents the distance between two consecutive peaks or troughs in the wave, and the frequency represents the number of cycles completed per unit of time.

If the wavelength increases, the number of peaks or troughs per unit of time will decrease, and thus the frequency will decrease as well.

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Answer:

The solar nebula became hot and dense because of that it pulling in more gas. This flattened into a rotating disk. It  spun  faster and faster, forming the Sun.

Explanation:

hope this helps

The solar nebula became hot and dense because of that it pulling in more gas. This flattened into a rotating disk. It  spun  faster and faster, forming the Sun. This order did the events forming our solar system occur.

In the so-called nebular hypothesis of the genesis of the solar system, the Sun and planets originated by condensation from a gaseous cloud. In 1734, Swedish philosopher Emanuel Swedenborg claimed that the planets arose from a nebular crust that enveloped the Sun before breaking apart. Immanuel Kant, a German philosopher, proposed in 1755 that the Sun and planets were created by a slow rotating nebula that was eventually pushed together by its own gravitational force and flattened into a spinning disc. In 1796, the French astronomer and mathematician Pierre-Simon Laplace presented a similar concept, but with the planets forming before the Sun. The Kant-Laplace theories were criticised by the British physicist James Clerk in the late nineteenth century.

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The downward momentum initially given is carried by the exhaust gases expelled from the rocket engines.

According to the law of conservation of momentum, the total momentum of a system remains constant if no external forces act on it. In the case of a rocket launching from a launch pad, the upward momentum of the rocket is balanced by an equal and opposite downward momentum given to something else in the system.

Typically, in rocket launches, the downward momentum is given to the exhaust gases expelled from the rocket engines. As the rocket engines expel gases at high speeds in the downward direction, the gases carry a significant amount of momentum in that direction. This downward momentum of the exhaust gases is equal in magnitude but opposite in direction to the upward momentum of the rocket.

So, in the scenario described, the downward momentum initially given is carried by the exhaust gases expelled from the rocket engines.

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angle to the shore should a person navigate a boat, which is maintaining a constant speed of 16 km/h, in order to reach a point directly opposite is 75.5 degrees.

Since the stream is flowing parallel alongside the shore, it takes the vector form of  v {stream} = [0,4]

the boat velocity is perpendicular to the stream, it's takes the vector form of  v{boat} = [-16,0]

The resultant velocity of the boat is the sum of the velocity of the boat and stream, thus it takes the form

v{total} =  [-16,0] +  [0,4]

           = [ -16,4]

the cosine of angle to the shore,

                  cos {theta} = v{total} . v {stream} / ||v{total} || x ||v {stream}||

                                     =  [ -16,4] . [0,4] / (16x4)

                                     = 16/64

                                     = 0.25

                       angle = 75.7 degrees.

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The quarterback will be moving backward at approximately 0.080625 m/s Velocity just after releasing the ball.

To solve this problem, we will use the conservation of momentum principle. First, let's identify the objects in the system and not in the system:

In system: Quarterback, Football

Not in system: Earth, Air

Now, let's follow the steps to solve the problem:

Step 1: Identify the initial and final states of the system.

Initial state: Quarterback and football are stationary (before the jump).

Final state: Quarterback jumps and throws the football, both moving in opposite directions.

Step 2: Apply the conservation of momentum equation.

The total momentum before the jump (initial state) is 0, so the total momentum after the jump (final state) should also be 0.

Step 3: Set up the equation.

Initial momentum = Final momentum

0 = (mass of quarterback × velocity of quarterback) + (mass of football × velocity of football).

Step 4: Plug in the given values.

0 = (80 kg × velocity of quarterback) + (0.43 kg × 15 m/s)

Step 5: Solve for the velocity of the quarterback.

-0.43 kg × 15 m/s = 80 kg × velocity of quarterback

velocity of quarterback = (-0.43 kg × 15 m/s) / 80 kg

velocity of quarterback = -0.080625 m/s.

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Answer:

counting tree rings can indicate age

Explanation:

hope i helped at least a little bit :)