The robobils program their robot to execute three displacements A, B, and C. Displacement A is 15 meters at 110 degrees. Displacement B is 11 meters at 230 degrees. Displacement C is 31 meters at 320 degrees. What is the resulting displacement of the robot if it performs A+B+C?

The term that increases when air faces greater resistance against an object with a larger surface area is drag.

The drag force is created when a solid object moves through a fluid (liquid or gas), such as air, and experiences resistance to its motion.Drag can be affected by various factors, including the object's shape and surface area. In general, objects with larger surface areas will experience more drag than those with smaller surface areas because they create more friction with the surrounding fluid. For example, a flat, wide object like a barn door will experience more drag than a narrow object like a pencil because it has a larger surface area. Similarly, a parachute will experience a large amount of drag because of its large surface area, which creates a significant amount of friction with the air molecules around it.In order to minimize drag and increase efficiency, engineers and designers often try to create streamlined objects with minimal surface area. This can be seen in the design of cars, airplanes, and even swimsuits used by competitive swimmers. By minimizing drag, these objects are able to move more quickly and with less effort through their respective fluids.

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The pipe wrench fell from a height of 29.4 meters. The correct option is a.

1. When an object falls freely under gravity, its final speed at impact depends on the height from which it fell.

2. We can use the kinematic equation relating the final speed (vf), initial speed (vi), acceleration due to gravity (g), and height (h) to calculate the height from which the pipe wrench fell.

3. In this case, the final speed is given as 24 m/s, and we assume the initial speed is 0 m/s as the wrench was dropped.

4. The acceleration due to gravity on Earth is approximately 9.8 m/s².

5. Using the equation vf² = vi² + 2gh, where vi = 0, we can solve for h.

  vf² = 0 + 2gh

  (24 m/s)² = 2 × 9.8 m/s² × h

  576 m²/s² = 19.6 m/s² × h

  h = 576 m²/s² / (19.6 m/s²)

  h ≈ 29.4 meters

6. Therefore, the pipe wrench fell from a height of approximately 29.4 meters.

7. The correct answer is option (a), 29.4m.

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Answer:

C. A Covalent Bond

Explanation:

two covalent bond form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell

A secondary and primary coil are present in a transformer. The transformer's power is 1800 V.

Primary coil turn = NP= 200

Secondary coil turn= 2000 turn.

Input voltage = 120 V

Input power = 1800 W.

Pi = Vi I i

1800 = 120 Vi

Ii = 15 A

Vs = 2000/ 200 * 120

    = 1200 V

Transformers work by inducing current in a second coil known as the secondary as the magnetic lines of force (flux lines) build up and contract in response to variations in current flowing through the primary coil.

IS/ Ii = NP/NS =

IS= 1.5 Ampere

Power = VI= 1200*1.5 = 1800 V.

Therefore, A secondary and primary coil are present in a transformer. The transformer's power is 1800 V.

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Answer: Yes, on many slate-roofed homes as temperatures change, such as cooling at night or heating during the day, thermal expansion or contraction of the slates may cause movement that in turn causes snapping, popping, or cracking noises, even bangs and clanks or clicks from the roof.

Explanation:

Answer:

because of its mealting

Explanation:

hope it helps you

The other responses are all essentially correct, but I'd want to offer a somewhat different perspective. This one is a little more technical, but it offers an intriguing perspective, in my opinion.

One of the first things I would mention is the fact that orbits are ellipses rather than circles. The phrases apogee and perigee are used because of this. The apogee is the orbit's highest point, while the perigee is its lowest point, giving the shape of an ellipse. A circular orbit is just an ellipse with the same apogee and perigee. However, apogee and perigee are not the crucial variables from an orbital perspective; rather, apoapsis and periapsis are.

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An example of a contractile source of motion restriction is the contraction of muscles in the human body.

Muscles in the human body play a crucial role in generating movement and controlling motion. Through the process of contraction, muscles have the ability to restrict or limit motion at specific joints, acting as a contractile source of motion restriction.

When muscles contract, they exert a pulling force on the bones they are connected to, resulting in movement at the joints. This contraction is achieved through the interaction of actin and myosin filaments within the muscle fibers. When a signal from the nervous system triggers muscle activation, calcium ions are released, allowing the actin and myosin filaments to slide past each other. This sliding motion generates force, causing the muscle fibers to shorten and contract.

By selectively contracting specific muscles, it is possible to restrict or limit motion at certain joints. For example, when you contract your bicep muscle, it restricts the motion at the elbow joint, causing the arm to bend. Similarly, when you contract your quadriceps muscles, they restrict the motion at the knee joint, allowing you to extend or straighten your leg.

In summary, the contraction of muscles serves as a contractile source of motion restriction. Through their ability to generate force and control joint movement, muscles play a crucial role in enabling and regulating various motions in the human body.

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Answer:

answer https:/

Explanation:

apparatus.com

In interference of light, the two light waves coming from two slits travel different paths before reaching the screen. The waves interfere with each other, resulting in a pattern of bright and dark spots on the screen. The difference in the path for the two light waves is what causes the interference pattern to form.

In the interference of light, the difference in the path for the two light waves coming from two slits and making a bright spot on the screen is an integral multiple of their wavelength. This condition leads to constructive interference.
Step-by-step explanation:
1. Light waves pass through two slits, creating two separate wave sources.
2. The waves from each slit propagate and overlap, causing interference.
3. When the path difference between the two waves is an integral multiple of their wavelength (i.e., 0, λ, 2λ, 3λ, etc.), they are in phase, and constructive interference occurs.
4. This constructive interference results in a bright spot on the screen.
The bright spot appears due to the reinforcement of the two light waves, which leads to an increase in the amplitude and intensity of the combined wave at that point. The waves can either interfere constructively or destructively, depending on whether the peaks and troughs of the waves align or cancel each other out. The bright spot on the screen is where the waves have interfered constructively, creating a maximum amplitude of light.

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1. The coefficient of sliding friction between the two surfaces is 0.1767. 2) The resultant net force acting on the box is 308.5 N.

1. For the first question, to find the coefficient of sliding friction, divide the applied horizontal force by the weight of the box. The applied horizontal force is given as 23.0 N, and the weight of the box can be calculated using the formula

weight = mass × acceleration due to gravity.

Thus, weight = \(13.3 kg * 9.8 m/s^2 = 130.34 N\).

Dividing the applied horizontal force by the weight gives us the coefficient of sliding friction:

23.0 N / 130.34 N = 0.1767

2. Moving on to the second question, to determine the resultant net force acting on the box, need to consider both the applied force and the weight of the box. The applied force is given as 857.3 N vertically upward, and the weight of the box can be calculated as before:

weight = \(56.0 kg * 9.8 m/s^2 = 548.8 N\).

Since the applied force is directed upward and the weight acts downward (negative), subtract the weight from the applied force:

857.3 N - 548.8 N = 308.5 N

Therefore, the resultant net force acting on the box is 308.5 N.

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Answer:

A

Explanation:

To measure wavelength, you would find the distance from crest (top of the wave) to crest.  

Hope this helps!  :)

Answer:

answer down below

Explanation:

hi! newton's third law applies to a lot of things. this is shown when we jump, bounce a ball, or push something, for example. the law states that for every action, there an equal and opposite reaction. when you bounce a ball, it bounces back up at the same force at which you dropped it.

hope this helps!

If a rocket takes off from Earth with a certain force, there are several things that must be true about Earth to make this possible.

Firstly, Earth must have a gravitational field that attracts the rocket toward its center. This gravitational force pulls the rocket toward the ground, and the rocket must overcome it with a force greater than the force of gravity in order to take off.

Secondly, Earth's atmosphere must be present, as the rocket needs to push against the air molecules to create thrust and lift off the ground. Thirdly, Earth's surface must be firm enough to support the launch of the rocket, with a strong and stable launchpad to prevent any accidents.

Fourthly, Earth's rotational speed and position in its orbit around the Sun must also be taken into account, as this affects the required trajectory of the rocket for a successful launch. Overall, a combination of Earth's gravitational force, atmosphere, surface conditions, and position in its orbit all play a crucial role in enabling a rocket to take off from Earth.

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This is due to the fact that the Earth's crust is in constant motion due to plate tectonics. As a result, the oceanic crust is frequently being produced and destroyed, whereas the continental crust is much less dynamic and can persist for billions of years.

1. How do we use the Doppler effect as evidence to support the Big-Bang Theory?The Doppler effect is used to support the Big Bang Theory in two ways: first, in determining the expanding universe, and second, in validating the Big Bang's CMB (Cosmic Microwave Background) radiation.

The Doppler effect is a wave phenomenon in which the frequency of a wave changes depending on whether the observer is moving toward or away from the source.

The change in wavelength and frequency of light from stars is used to measure the movement of galaxies.2. Were all elements created at the same time? Explain.All of the elements in the universe were created in the aftermath of the Big Bang.

The universe began with a period of rapid expansion known as cosmic inflation, which lasted for a fraction of a second. During this time, the universe expanded at a breakneck speed, and the temperature was incredibly high.

The Big Bang theory proposes that at this moment, all the matter in the universe was condensed into a single point of infinite density and temperature, known as a singularity.3. Create a diagram of the physical and chemical layers of Earth. Label with as much detail as possible.

From there explain why the composition of the bulk Earth is different than just the surface-i.e. the crust? How did this difference arise?The Earth is composed of several layers, both physical and chemical.

The four physical layers of the Earth are: the crust, mantle, outer core, and inner core. The three chemical layers are the lithosphere, the asthenosphere, and the mesosphere.

The crust is the outermost layer of the Earth, and it is composed of both oceanic and continental crust. The upper mantle and lower mantle form the interior of the Earth, while the outer core and inner core make up the Earth's core.The composition of the bulk Earth is different from the surface because the Earth's crust is much thinner than the mantle below it.

The mantle is composed of rock that is denser than the rock in the crust, which causes the crust to float on top of it. The rocks in the mantle have a higher concentration of iron, magnesium, and silicates, while the rocks in the crust have a higher concentration of silicon, aluminum, and oxygen.4.

The oldest rocks making up the continents are nearly 4 billion years old, whereas oceanic crust is generally younger than 200 million years old? Why is there such a big discrepancy? Explain why continental crust can be so old and oceanic crust is relatively young.The oldest rocks found on the continents are significantly older than the oldest rocks found on the ocean floor.

This is due to the fact that the Earth's crust is in constant motion due to plate tectonics. As a result, the oceanic crust is frequently being produced and destroyed, whereas the continental crust is much less dynamic and can persist for billions of years.

The oceanic crust is recycled into the mantle, while the continental crust remains stable, resulting in the discrepancy in age between the two types of crust.

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(1) The Doppler effect is used as evidence to support the Big Bang Theory because it helps explain the expansion of the universe. (2) No, not all elements were created at the same time. (4) The discrepancy in the ages of continental and oceanic crust is due to the process of plate tectonics.

1. The Doppler effect is used as evidence to support the Big Bang Theory because it helps explain the expansion of the universe. According to this theory, the universe began from a single point and has been expanding ever since. The Doppler effect is observed when there is a change in frequency or wavelength of a wave due to the relative motion between the source of the wave and the observer.

When astronomers observe light from distant galaxies, they can analyze the light spectrum to determine if there is a shift towards longer wavelengths, known as a redshift, or towards shorter wavelengths, known as a blueshift. In the case of distant galaxies, astronomers observe a redshift, indicating that the light from these galaxies is shifted towards longer wavelengths. This redshift is consistent with the idea that the universe is expanding, as the galaxies are moving away from us.

2. No, not all elements were created at the same time. The elements we find today were formed through various processes in the universe. The early universe consisted mostly of hydrogen and helium, which were formed shortly after the Big Bang. These elements are often referred to as primordial elements.

Other elements, such as carbon, oxygen, and iron, were formed through nuclear fusion in the cores of stars. This process, known as stellar nucleosynthesis, occurs during the life cycle of stars. When massive stars explode in supernovae, they release these elements into space, where they can eventually form new stars and planetary systems.

So, the elements we find today were created at different times and through different processes in the history of the universe.

3. Here is a diagram of the physical and chemical layers of the Earth:

1. Crust: This is the outermost layer of the Earth and is composed of solid rock. It is the thinnest layer and is divided into continental crust and oceanic crust.

2. Mantle: The mantle is the layer beneath the crust and is mostly made up of solid rock. It is much thicker than the crust and is divided into the upper mantle and lower mantle.

3. Outer Core: The outer core is a liquid layer composed mainly of molten iron and nickel. It surrounds the inner core and is responsible for the Earth's magnetic field.

4. Inner Core: The inner core is the innermost layer of the Earth and is believed to be a solid ball made mostly of iron and nickel.

The composition of the bulk Earth, including the mantle and core, is different from just the surface or crust. This difference arose due to the process of differentiation during the early stages of the Earth's formation. When the Earth was still molten, denser materials sank towards the center, forming the core, while lighter materials rose to the surface, forming the crust.

4. The discrepancy in the ages of continental and oceanic crust is due to the process of plate tectonics. Continental crust can be much older because it is not easily destroyed or recycled like oceanic crust. Continental crust is thicker, less dense, and more buoyant than oceanic crust, which allows it to resist subduction and remain on the Earth's surface for longer periods.

On the other hand, oceanic crust is constantly being formed at mid-ocean ridges and then destroyed through subduction at convergent plate boundaries. This continuous cycle of creation and destruction of oceanic crust means that the oldest oceanic crust is generally younger than 200 million years old.

In summary, the discrepancy in the ages of continental and oceanic crust is a result of the different processes and dynamics occurring at plate boundaries, which affect the formation and destruction of crustal material. Continental crust can be much older because it is not easily recycled, while oceanic crust is relatively young due to the continuous process of plate tectonics.

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Answer:

5 meter/second.

Explanation:

50/10

Answer:

G is called the constant of gravitation and is equal to 6.67 × 10−11 newton-metre2-kilogram−2.

Explanation: I hope this helps* pls mark me brainliest*

The index of refraction of this liquid will be 1.28. It is found as the ratio of the sin of the angle of incidence and the angle of reflection.

The refractive index of a substance is a dimensionless quantity that specifies how quickly light passes through it in optics.

The given data in the problem is;

Angle of incidence (i)= 65°

Angle of refraction(r) = 42°

The formula for the index of refraction is;

\(\rm n = \frac{sin \ i }{sin \ r} \\\\ \rm n = \frac{sin 65 ^0}{sin 42^0} \\\\ n=1.28\)

Hence, the index of refraction of this liquid will be 1.28.

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Answer:

Strength

Explanation:

Answer:

63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold

Explanation:

There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)

The correct answer is B. According to Newton's law of universal gravitation, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

In simpler terms, as objects get closer together, the gravitational force between them increases.

When the distance between two objects decreases, the denominator of the equation (distance squared) becomes smaller, resulting in a larger force. Conversely, when the distance increases, the denominator becomes larger, resulting in a smaller force.

It is important to note that the mass of an object does not directly affect the strength of the gravitational force between two objects. However, a higher mass will lead to a greater gravitational force when compared to a lower mass, but only because the force is being exerted on a more massive object. The mass of an individual object doesn't directly affect the gravitational force it experiences from another object. option B

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Answer: A solid can be converted to a liquid by heating, a liquid can be converted to a solid by cooling.

To determine the maximum mass of coal the barge can carry in freshwater without sinking, we need to consider its buoyancy and weight. Buoyancy is the force that allows the barge to float and is equal to the weight of the water displaced by the barge. The weight of the barge and its cargo must not exceed the buoyant force to prevent sinking.

Assuming the barge has a rectangular shape, we can calculate its volume using the formula V = l x w x h, where l is the length, w is the width, and h is the height of the barge. Let's assume the barge is 30 meters long, 10 meters wide, and 4 meters high. Therefore, the volume of the barge is V = 30 x 10 x 4 = 1200 cubic meters.

Since the barge is made of 4.6-cm-thick steel plates on each side and the bottom, we need to calculate the weight of the steel and subtract it from the buoyant force. The density of steel is approximately 7850 kg/m^3. The total surface area of the barge is (2 x 30 x 4 + 2 x 10 x 4 + 30 x 10) = 280 square meters. Therefore, the mass of the steel in the barge is:

mass of steel = density x volume x thickness
mass of steel = 7850 x 280 x 0.046
mass of steel = 97,724 kg

Next, we need to calculate the buoyant force acting on the barge. The density of freshwater is 1000 kg/m^3. Therefore, the weight of the water displaced by the barge is:

weight of water = density x volume
weight of water = 1000 x 1200
weight of water = 1,200,000 kg

Finally, we can calculate the maximum mass of coal the barge can carry in freshwater without sinking:

maximum mass of coal = weight of water - weight of barge and steel
maximum mass of coal = 1,200,000 - (97,724 + weight of coal)

Assuming the density of coal is approximately 1300 kg/m^3, we can calculate the volume of coal that the barge can carry:

volume of coal = (weight of coal) / (density of coal)

Substituting this in the previous equation and solving for the maximum mass of coal, we get:

maximum mass of coal = 1,200,000 - (97,724 + volume of coal x 1300)

Solving for the maximum volume of coal, we get:

volume of coal = (1,200,000 - 97,724) / 1300
volume of coal = 882.7 cubic meters

Therefore, the maximum mass of coal the barge can carry in freshwater without sinking is:

maximum mass of coal = volume of coal x density of coal
maximum mass of coal = 882.7 x 1300
maximum mass of coal = 1,146,510 kg

In conclusion, the barge can carry a maximum of 1,146,510 kg of coal in freshwater without sinking, assuming the barge has a rectangular shape with dimensions of 30 x 10 x 4 meters and is made of 4.6-cm-thick steel plates on each side and the bottom.

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The atoms in a hot object move faster than atoms in a cold object.

Answer:

The atoms in a hot object move faster than atoms in a cold object. The atoms in a hot object have more kinetic energy than the atoms in a cold object. Adding heat to a substance will make the atoms vibrate more and when heat leaves the substance; the atoms will vibrate less. Potential energy is stored energy.

During exercise, the major mechanism of heat loss is evaporation of sweat from the skin. Sweat evaporation is a thermoregulatory process that allows humans to maintain a relatively constant internal body temperature when engaging in exercise.

As a result of exercise, metabolic heat is generated. When the internal temperature rises, thermoreceptors in the hypothalamus are activated, causing sweat glands to be stimulated through sympathetic nerve fibers.The sweat produced then evaporates off the skin and removes the heat generated by exercise, thus cooling the body. However, sweat evaporation is only effective in removing heat if the ambient temperature is lower than the skin temperature. If the ambient temperature is higher than the skin temperature, then sweat cannot evaporate, and heat will not be removed from the body. Other mechanisms of heat loss, such as conduction, convection, and radiation, are less important than sweat evaporation during exercise.

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Answer:

2 A

Explanation:

Kirchhoff Laws to the circuit consisting more than two batteries, the current leaving the battery is as same as entering the battery

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Answer:

Yeah it's right there from the one next to the exclamation point

Answer:

its not there

Explanation:

its literally not there

Answer: 31N

Explanation:F = m x a

F = 8.5 x 3.7

F = 31.45

F = 31 (rounded)

F = 31 N