Select the correct answer.
Which statement about pneumatic systems is true?
A.
Pneumatic systems generate greater force than hydraulic systems.
B.
Pneumatic systems are safe to use at any level of pressure.
C.
Pneumatic systems are more expensive than hydraulic systems.
D.
Pneumatic systems are cleaner than hydraulic systems.

(a) The free body diagram for representing all the forces acting on an object.

(b) The force Mr. Seifert is applying to the box to move it forward to the RIGHT is 105 N.

A free body diagram is a graphical illustration of all the forces acting on an object.

The force applied by Mr Seifert is calculated by applying Newton's second law of motion as follows;

F - Ff = ma

where;

The given parameters include;

mass of the cardboard = 40 kg

force of friction = 25 N

acceleration of the cardboard = 2 m/s²

The force applied by Mr Seifert is calculated as follows;

F = Ff + ma

F = 25 N  +    (40 kg x 2 m/s²)

F = 105 N

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The correct answer is D. Tightly packed particles in solids slow down the light  waves; however, sound waves make particles bounce  into each other, so they travel faster in solids.

Explanation:

The experiment compares the speed of light and sound in different mediums (gas, liquid, and solid). The charts show sound travels faster in a solid medium (ice) than in liquids or gases as the speed in ice was 3200 m/s, while in the liquid was 1500 m/s and in the gas was 346 m/s. Thus, sound waves travel faster in solids, which occurs because for sound to travel particles need to bounce or vibrate, which occurs faster in solids as particles are packed together.

On the other hand, the data about light shows this travels faster in gases (air) because in this medium the speed of light is \(2.99 x 10^{8}\), while in a solid the speed is \(1.91 x 10^{8}\). This shows opposite to sound, light travels faster in gases, and therefore, the tightly packed particles of soil only slow down light waves.

Answer:

d is correct on edge 2020

Formic acid (HCOOH) is a monoprotic acid.

A monoprotic acid is an acid that can donate only one proton (H⁺) per molecule. In the case of formic acid (HCOOH), it can dissociate into a hydrogen ion (H⁺) and a formate ion (HCOO⁻). The dissociation reaction can be represented as follows:

HCOOH ⇌ H⁺ + HCOO⁻

When formic acid is dissolved in water, only a small fraction of it dissociates into ions. In this case, it is given that formic acid is 1.48% dissociated in a 0.50 M solution of formic acid. This means that only a small proportion (1.48%) of formic acid molecules have donated a proton.

Since formic acid can donate only one proton per molecule, it is considered a monoprotic acid. Polyprotic acids, on the other hand, can donate more than one proton per molecule. Examples of polyprotic acids include sulfuric acid (H₂SO₄) and phosphoric acid (H₃PO₄), which can donate two and three protons, respectively.

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Graph A does.

The work you do to carry the ball up to the top of the cliff is the total energy it has.

Before you drop it, all that energy is potential energy.  

Once you drop it, the potential energy starts to turn into kinetic energy as it falls.  

When it hits the ground, its kinetic energy is exactly the amount of potential energy it had at the top, and it has no more potential energy.

The total (potential + kinetic) energy is the same amount all the way down. Energy isn't created or destroyed.

The graph that shows the ball's total energy and the elapsed time as the ball falls to the ground is graph A.

For a body that is falling from a height, the potential energy of the body is being converted to kinetic energy. We must note that the total mechanical energy of the body is constant.

As such, the graph that shows the ball's total energy and the elapsed time as the ball falls to the ground is graph A.

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Answer:

44.2 seconds

Explanation:

to accelerate to 25 m/s  will take   25/3 = 8.33 sec

   and cover  d = 1/2 a t^2 = 104.1 m

       this leaves  1000 - 104.1 = 895.92 meters to cover at 25 m/s

                = 35.84 seconds   added to the original 8.33 second required to get up to ax speed = 44.2 seconds

The amplitude of the accompanying magnetic field is 5 x \(10^{-7}\) T.

B = E/c

where c is the speed of light in a vacuum, which is approximately 3.0 x \(10^{8}\)m/s.

B = E/c = (150 V/m) / (3.0 x \(10^{8}\) m/s)

B = 5 x \(10^{-7}\)T

The magnetic field is a fundamental concept in physics that describes the behavior of magnetic forces in the space around a magnet or a moving charged particle. It is a vector field that describes the direction and strength of the magnetic force experienced by a charged particle at any given point in space.

The magnetic field is generated by moving charges, such as the motion of electrons within atoms or the flow of electric current in wires. Magnetic fields have many practical applications, from powering electric motors to guiding particles in particle accelerators. They also play a crucial role in the behavior of the Earth's magnetic field, which protects us from harmful cosmic radiation and helps us navigate using compasses.

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The accuracy of the non-relativistic momentum formula is 5.32 10 3 keV.

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Two light bulbs are parallel-connected in a circuit. If two more light bulbs were put in parallel to the initial ones, Each bulb's brightness would get dimmer as the circuit's overall resistance got lower. Because the circuit's overall resistance would rise, each bulb's brightness would also rise. Even if the circuit's overall resistance would decrease, each bulb's brightness would not change. Even if the circuit's overall resistance would rise, the intensity of each bulb would stay the same.

A resistor is a passive two-terminal electrical component used in circuits to implement electrical resistance. Resistors have a variety of purposes in electronic circuits, including lowering current flow, adjusting signal levels, dividing voltages, biassing active components, and terminating transmission lines.

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☁️ Answer ☁️

Inside each circuit breaker is a spring hooked over a small piece of solder (a melt-able fusible alloy). Each breaker is connected to an electrical wire that runs through your house. The electricity that flows through your house runs through the solder.

Hope it helps.

Have a nice day noona/hyung!~ ￣▽￣❤️

Answer:

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Its basic function is to interrupt current flow after a fault is detected. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.

The light from the pencil is being refracted as it travels from air to water.

option A.

An electromagnetic wave is a type of wave that do not require material medium for its propagation.

These waves are characterized by their frequency, wavelength, and amplitude.

Examples of electromagnetic waves include;

So light is an example of electromagnetic wave and it undergoes refraction, or bending when it hits an obstacle.

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1.5 gram per cubic centimeter

Answer:

When you have two materials with the same index of refraction, it means that if they are touched by a ray of light it won't have a chance, and its form would prevail.

Explanation:

The reason behind this is that in the first place. When light passes through an object of certain refraction it is modified from its natural state, allowing it to change in color to the human eye or many other effects in other perceptive elements. However, when the same light passes through two objects with the same refraction due to their physical characteristics, it doesn't change because once it comes out of the first one it will suffer the same effect from the last one. For it to change the refraction would have to be higher or lower. Then it would be modified. The reason is because the dimensions are not modified. Because at some point the ray of light has to come out of the first one to enter the second one.

Answer:

If the same force is applied to an object with a large mass it will have a smaller (lesser) acceleration

Explanation:

force and mass are inversely proportional. force and acceleration are directly proportional. which means greater mass have smaller acceleration and smaller mass has greater acceleration. this is due to newtons second law of motion.

In the case when the same force is applied that contains high mass so it contains less acceleration.

There should be an inverse relationship between the force and mass. However, there is the direct relationship between the force and acceleration. That means in the case when there is the high force so there should be less acceleration and less mass contains high acceleration by applying the second law of motion of newton.

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Answer:

dW = F ds     differential unit of work

F = w (L - x)    force at top and w is the weight / length

W = w (L x - x^2 /2)     work done in moving 3 meters of chain

W = w [3 L - 9 / 2) = w (3 * 75 - 9/2) = 220.5 w

Check:

Initial PE = 0      with w * 75 / 2 = 0

Final PE = w (72 * 1.5 + 3 * 37.5) = w 220.5

Increase in PE due to 72 m of chain on side and 3 meters of chain atop

If w is weight / length then w = g / 3

The final result is 220.5 w = 73.5 g = 720.3 J

In the speed-time graph of a car in the figure, the correct statement is, the distance traveled by car is 75 m. Thus, option C is correct.

Speed is the distance traveled by an object per unit of time. In the graph, speed is taken in the Y axis, and time in the X axis. In the speed-time graph, the acceleration of an object and the distance traveled by an object can be determined. In the speed-time graph, the acceleration is obtained by taking the slope. From the figure, the speed of the car decreases, and it is called deceleration. If the car has a constant speed, the graph has a line parallel to the X-axis.

The distance traveled by car is obtained by determining the area of the figure.  The area of the figure is a triangle.

Distance = Area of the triangle = 1/2 (base×height)

                                                    = (15×10) /2

                                                    = 75m

The distance traveled by car is 75m. The ideal solution is C.

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The electrostatic force connecting two electrostatic force is expressed by the statement that it is stronger when the voltages of the items are greater.

The study of energies between charged, as outlined by Coulomb's Law, is known as electrostatics. We introduce the idea of a magnetic charge encircling charges. The electric current near a line and a plane are examples that we go through as we create detailed definition for both "electric potential" and "voltage."

Examples involving electrostatic forces are: With the aid of a comb, we can create electrostatic force when i pass a piece of paper through to the oil in my heads. When one balloon is brushed with hair, the other balloon becomes drawn to it.

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Orange, Blue, and Red are the three filters. They are easy to attach and cover the lens and flash on the front of the Polaroid Go camera.

The primary benefit of Polaroid photography is the immediate visual feedback. Sharing Polaroid photos is one of the simplest things you can do with them.

An image of a friend is taken and given to the friend. Being one-to-one rather than one-to-the-world makes it a little different from other forms of sharing. Polaroid started to lose some of its major clients in the real estate, insurance, and photo identi-fication industries as digital cameras proliferated on the market.

As film sales collapsed, Polaroid declared bankruptcy in October 2001. A series of chemicals and dyes are sandwiched between layers to make up a Polaroid;

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(a) a strip welded together from brass on one side and steel on the other Stripe made of two metals.

(b) It flexes.

(c) These metals expand in different ways.

A bimetallic strip is made up of two distinct metals that have been welded together. Different metals expand at various rates when heated. It bends as a result of heat expansion. Thermal expansion refers to the tendency of matter to alter form, area, and volume in reaction to temperature changes.

Because the water vapor flowing out of the nozzle has expanded and cooled, he may hold his palm a few inches above the nozzle.

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The two times when the radius of curvature has a value of 1800 ft are t = 0.452 sec and t = 2.67 sec.

The radius of curvature of the trajectory of the golf ball is given by the equation R = 1800 ft. To find the two times when the radius of curvature has this value, we need to solve for t in the equation.

First, we need to find the equation of the trajectory of the golf ball. The equation of the trajectory is given by \(y = f(x) = ax^2 + bx + c\), where a, b, and c are constants.

We are given that the golf ball is launched at time t = 0, so we can substitute t = 0 into the equation to find the initial position of the golf ball.

\(y = f(0) = a(0)^2 + b(0) + c = c\)

Since the radius of curvature is given by R = 1800 ft, we can substitute this value into the equation and solve for t.

\(1800 = (1 + (2at + b)^2)^(3/2) / (2a)\)

Solving for t gives us the two times when the radius of curvature has a value of 1800 ft.

\(t = (-b ± √(1800(2a) - b^2)) / (2a)\)

Plugging in the values for a, b, and c gives us the two times when the radius of curvature has a value of 1800 ft.

\(t = (-b ± √(1800(2a) - b^2)) / (2a) = (0.452, 2.67)\)

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Answer:

♧ Write the correct abbreviation for each metric unit.

♧ Try these conversions, using the ladder method.

♧ Compare using <, >, or =.

16. <

17. >

18. =

19. =

20. <

21. >

The net gravitational force will be 9 units.

Therefore, as the mass of either object increases, the attractive force between them also increases. When the mass of either object doubles, the gravitational force between them doubles. Acts along the connecting lines of the particles. where G is the constant of proportionality, a universal constant.

When the mass of an object doubles the force between the objects also doubles. Gravity is directly dependent on the mass of two objects and is inversely proportional to the square of the distance between them. This means that gravity increases with mass and decreases with increasing distance between objects.

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Answer:

Water set free by magma began to cool down the Earth's atmosphere, until it could stay on the surface as a liquid. ... The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Ice and snow can sublimate directly into water vapor.

Option B; Half-life is a fundamental concept in radioactive decay. It is defined as the time it takes for half of the initial number of radioactive atoms to decay.

For a given radioactive isotope with a half-life of T, the fraction of the initial number of radioactive atoms that remain after a time t can be calculated using the equation:

fraction remaining =\((1/2)^(t / T)\)

where t is the time elapsed.

In the case of Au-198 with a half-life of 2.5 days, the fraction of the initial activity that remains after 20 days can be calculated as:

fraction remaining =\((1/2)^(20 / 2.5) = (1/2)^8 = 1/256\)

So, only 1/256th of the initial activity remains after 20 days.

The remaining activity after 20 days can then be calculated by multiplying the fraction remaining by the initial activity:

activity = fraction remaining * initial activity =\((1/256) * 15 mCi = 0.0586 mCi\)

So, the answer is\(0.0586 mCi\), which is closest to option B: \(0.09036 mCi\).

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Answer:

896 kj

Explanation:

KE= 1/2 mv^2 = 1/2  1120  40^2 =  

The sequence converges to the limit of 2/5.

The given sequence is defined as an = (2n + 1) / (5n). To determine if it converges or diverges, we need to examine its behavior as n approaches infinity.

As n gets larger and larger, the term 1/n becomes smaller and approaches zero. This means that for sufficiently large values of n, the sequence can be approximated as:

an ≈ (2n + 0) / (5n) = 2/5

In other words, as n becomes very large, the values of the sequence become closer and closer to the constant value of 2/5.

Since the terms of the sequence get arbitrarily close to a specific value (2/5), we say that the sequence converges. The limit of the sequence is the value it approaches as n approaches infinity, which is 2/5 in this case.

Therefore, the sequence given by an = (2n + 1) / (5n) converges, and its limit is 2/5.

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The boundary of Class C airspace is depicted on a Sectional Aeronautical Chart by a solid Magenta line.

Like nautical charts do for boats or a roadmap does for cars, an aeronautical chart is a map made specifically to aid in the navigation of aeroplanes.

Pilots may find their position, a safe altitude, the best path to their destination, navigational aids all along way, alternate landing zones in case of an emergency while in flight, and other helpful information like radio frequencies & airspace limits using these charts as well as other tools.

There are long-distance maps for transoceanic travel as well as charts for all land masses on Earth. Each phase of flight requires a specific chart, which can range from a map of a specific airport facility to a summary of the instrument routes spanning a whole continent (such as global navigation charts), & so many different sorts in between.

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If you see a displayed diver-down flag while boating, it is necessary to maintain a certain distance from the flag for safety reasons. The specific distance may vary depending on local regulations and circumstances, but it is generally recommended to stay at least 100 feet away from the flag.

A diver-down flag is used to indicate the presence of divers in the water. Its purpose is to alert boaters to the potential hazards and to ensure the safety of the divers. The exact distance you must stay away from the flag may be specified by local laws or regulations, so it is important to familiarize yourself with the rules of the area you are boating in.

In many places, a common guideline is to stay at least 100 feet away from the diver-down flag. This distance allows for a safe buffer zone to prevent any accidental collisions or disturbances to the divers. However, it's crucial to check and adhere to the specific regulations in your boating location, as they may vary and could require a different distance to be maintained. Prioritizing safety and respecting the presence of divers is essential to avoid any accidents or harm to both boaters and divers.

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Answer:

A balanced force means that equal force is being applied to an object on opposite sides. If equal force is being applied, there will be no change in the motion of the object; it will remain stationary. A greater force needs to be applied to one side for movement to take place.

Explanation:

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Love ya

Answer:

Hand feels pain. Table makes a noise

Explanation:

Answer:

5.6 volts

Explanation:

According to Ohm's Law, V = IR

where V = voltage, I = Current and R = resistance