If it takes 20 N to move a box, how much power will be needed to move the box a
distance of 5 meters in 5 seconds?

Answer:

Magnetoreception (also magnetoception) is a sense which allows an organism to detect a magnetic field to perceive direction, altitude or location. This sensory modality is used by a range of animals for orientation and navigation, and as a method for animals to develop regional maps

You can disregard the weight of the rope and assume that the rope does not stretch. Use 9.81m/s2 as the gravitational acceleration value.

The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. It is a vector quantity to accelerate (in that they have magnitude and direction). The direction of the net force acting on an object determines the direction of its acceleration. According to Newton's Second Law, an object's acceleration is the result of two factors working together: the object's mass, which varies depending on the materials it is made of, and the net balance of all external forces acting on it. The magnitude of an object's acceleration is inversely proportional to the object's mass.

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Susan sees cloud through the window because most of the light hitting the window was transmitted when it passed through the window. Option A

The windows of an airplane are designed to be transparent, allowing light to pass through them with minimal distortion. This makes it easy to see outside the window and observe the clouds, the ground, or other objects.

Thus the fact that the window can be seen to be transparent means that it is able to transmit light as we have said above here.

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Most of the light hitting the window was transmitted when it passed through the window.

option A.

Light travels in straight lines unless it is reflected, refracted, or absorbed by a material. When light passes through a material, such as a window, it can be transmitted (pass through the material), reflected (bounce off the material), or refracted (bend as it passes through the material).

In the case of the airplane window, it is designed to be transparent, which means that it allows most of the light hitting it to pass through, without significant absorption or reflection. This is because the window is made of a material that is highly transparent to visible light, such as glass or acrylic.

Thus, the reason Susan could see the clouds through the window of the airplane is that the window was made of materials that allow most of the light hitting it to pass through, which is called transmission.

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The direction of the force on the charge due to the magnetic field is given by option B, which says that vector F points into the page

For each of the situations below, a charged particle Part B enters a region of uniform magnetic field. Determine the direction of the force on each charge due to the magnetic field.

The direction of the force on the charge due to the magnetic field is given by option B, which says that vector F points into the page. Hence, option B is the correct answer.

The Lorentz force is the force experienced by a charged particle in an electromagnetic field. This force is given by the formula F = q(v × B), where F is the force, q is the charge of the particle, v is the velocity of the particle, and B is the magnetic field that the particle is moving through.

This equation applies only to situations where the magnetic field is constant and the velocity of the charged particle is perpendicular to the magnetic field.

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The water displacement method is a simple technique that is used to find the volume of an irregularly shaped solid object. It involves immersing the object in water and measuring the amount of water that is displaced. The volume of the rock is 250 mL.

To calculate the volume of an object using the water displacement method, one should follow these steps:

1: Fill a container with water. Measure the volume of water that is in the container and record this measurement.

2: Place the object in the water. Measure the new volume of water in the container. Record this measurement. Make sure that the object is fully submerged in water and that no air bubbles are trapped around it.

3: Subtract the initial volume of water from the final volume of water. This difference is the volume of water that was displaced by the object. The volume of the object is equal to the volume of water that was displaced. The formula is as follows: Volume of object = Final volume of water - Initial volume of water.

One example of using the water displacement method to calculate the volume of an object is to measure the volume of a rock. A rock is an irregularly shaped solid object that cannot be measured using a ruler or other measuring device. To find the volume of a rock using the water displacement method, one can follow the steps listed above.

For example, if a rock is placed in a container of water and the volume of water increases from 500 mL to 750 mL, then the volume of the rock is equal to 750 mL - 500 mL = 250 mL.

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Answer:

2.5 Hz

Explanation:

3.0m/s / 1.2 m=2.5 1/s=2/5 Hz

The frequency of a wave with speed of 3.0 m/s and has a wavelength of 1.2m is 2.5 Hz.

The frequency of a wave is the number of cycles per second.

Given the wavelength is 1.2 m and speed v =3.0m/s, then the frequency of the wave is

v =fλ

f = 3 / 1.2

f = 2.5 Hz

Thus, the frequency of the wave is 2.5 Hz.

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To find the minimum pumping length of a string, you can use the Pumping Lemma for regular languages. This lemma states that if a language is regular, then there exists a pumping length for any string in the language.

To find this pumping length, you can follow these steps:

1. Assume that the language is regular.
2. Choose a string from the language that is longer than the pumping length you are trying to find.
3. Divide the string into three parts: x, y, and z.
4. Verify that the string can be pumped by repeating y any number of times while keeping the resulting string in the language.
5. If you can find such a division and pumping, then the pumping length is the length of y. Otherwise, the language is not regular.

In summary, to find the minimum pumping length of a string, you can use the Pumping Lemma for regular languages by assuming that the language is regular and following the steps outlined above.

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Jordan's take-off speed is 4.9 ms.

Key Accomplishments Too many to list. See the link below. Bottom line Jordan's incredible 4-foot vertical jump puts the top of his head 6 inches above the edge and the soles of his feet higher than any of his other NBA cleats. rice field. I also ran 4.3 Forty. Don't let anyone tell you that someone was a better athlete than you are. MJ was not only a great goalscorer back then, but he was also a high-flying dunker.

He has only one player in NBA history called his Airness and that is Michael He Jordan. He currently owns his NBA vertical jump of 48 inches, the highest in the entire tournament. That number comes with a hang time on the edge of 0.92 seconds. The 30th-40th percentile is 15-16 inches. Above-average vertical jump, values ​​are in the 60th and 70th percentiles and range from 18 to 19 inches. A good rating is 20-21 inches, which corresponds to the 80-90th percentile.

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It will take 3.0 s

Step by step explanation:-

We want to find the time it will take the object to reach the land.

To do this, we apply one of Newtons equations of motion:

\(s = ut + \frac{1}{2}gt^{2} \)

where s= distance/height

u = initial velocity

g = acceleration due to gravity

t = time

From the given question, we have :

\(s = 180m \\ u = 45m/s \\ g = 9.8m/{s}^{2}\)

Now substitute the given values into the equation and solve for t :

\(180 = 45t + ( \frac{1}{2} \times 9.8 \times {t}^{2})\)

\( = > 180 = 45t + 4.9 {t}^{2} \)

\( = > 4.9 {t}^{2} + 45t - 180 = 0\)

Solving the above quadratic equation, using quadratic formula :

\( = > t≈3.0s;t = - 12.2s\)

Since time cannot be negative,

\(t = 3.0s\)

So, it will take 3.0 s to reach the land.

The speed of the stream when the distance and time taken to travel are given is calculated to be 1.41 km/h.

A boat takes 3.4 hrs to travel 30 km.

It takes 5 hrs to return through same distance.

The speed of the boat during the downstream is, v + u = D/t

where,

v is the speed of the boat

u is the speed of the stream

D is the total distance

t is the time

v + u = 30/3.4 = 8.82 km/h

v = (8.82 - u) km/h

The speed of the boat upstream is given as, v - u = D/t

Substituting the values into the above equation,

v - u = D/t

(8.82 - u) - u = 30/5

8.82 - 2 u = 6

2 u = 8.82 - 6

2 u = 2.82

u = 1.41 km/h

Thus, the speed of the stream is calculated to be 1.41 km/h.

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Since opposite poles attract each other, the north pole of the magnet must be closest to the compass.  

The compass needle points west of north, indicating that the north-seeking end of the compass needle is being attracted towards the south pole of the magnet. The pole on the magnet that is closest to the compass is the north pole.

When the bar magnet is placed parallel to the surface of the Earth, it creates its own magnetic field. This magnetic field interacts with the Earth's magnetic field, causing the compass needle to deviate from pointing purely north.

The Earth's magnetic field has a horizontal component, and its magnitude is given in the problem statement. The presence of the bar magnet introduces a magnetic field that interacts with the Earth's magnetic field, resulting in the deflection of the compass needle.

The specific direction In which the compass needle points (west of north) depends on the relative orientations of the Earth's magnetic field and the magnetic field created by the bar magnet.

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Answer:

In projectile motion, the velocity along the x-axis is constant.

Explanation:

In case of projectile motion the vertical component of particle's velocity changes continuously because of the force acting in vertical direction which is its own weight.

But in the horizontal direction as there is no force acting on the object; therefore its horizontal velocity remains constant.

Answer:

The Equivalence Principle of Gravity

Explanation:

The fact that objects fall to earth at the same speed is called the Equivalence Principle of Gravity.

According to the Equivalence Principle of Gravity, all things fall at the same rate when there is little to no air resistance. The value of the acceleration caused by gravity is demonstrated by the force of gravity equation to be a constant that is independent of the mass of the item.

According to Einstein's equivalence principle, it is unnecessary to distinguish between gravitational and inertial forces because they are comparable in nature.

Therefore, the Equivalence Principle of Gravity states that all objects descend to Earth at the same rate.

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Answer:

I believe it is actually C

Explanation:

Matter and energy cannot be created or destroyed so A is incorrect

Since energy cannot be created, B is incorrect

while C and D both sound correct, D does not mention entering while C does so I believe C is correct. When i submit this answer into my quiz, i will add if i am right.

In the universe, all energy and matter are contained; no energy or matter enters or exits - the statement best describes why the universe could be considered an isolated system.

A thermodynamic system is said to be isolated if it cannot exchange either mass or energy with the outside world. In contrast to a closed system, energy can't move across isolated systems. Energy can move freely within and outside of closed systems; they are only closed to matter.

As both energy and matter can not exit from a universe, we can consider universe as a isolated system.

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Answer:

2 and 4

Explanation:

right on edge

Answer:

can confirm its 2 and 4

Explanation:

Answer:

No work is done since no distance is given

Explanation:

Since no distance is given, the force is not doing any work

No work is done by the man since we do not know the distance or displacement.

Work is only said to be done when the force applied on an object moves it through a particular distance.

Work done  = Force x distance.

Since no distance is given in this problem, we can as well assume that the force applied is doing no work on the object.

The number of revolutions per minute which a 25 m diameter ferris wheel would need to make for the passengers to feel weightless is 7.84 rotations per minute.  

The rotational speed of a ferris wheel needs to reach 8.5 revolutions per minute (RPM) for passengers to experience weightlessness. To calculate the RPM of a 25m diameter ferris wheel, use the formula:

RPM = (distance/circumference) × 60.

The circumference of a 25 m ferris wheel is 157.07m. Therefore, the RPM of a 25m ferris wheel would be:

RPM = (25m/157.07m) × 60 = 7.84 RPM

Therefore, a 25m ferris wheel would need to rotate at a rate of 7.84 RPM for passengers to experience weightlessness.

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Answer:

636.4 J

Explanation:

The potential energy between one of the charges at the corner of the square and the fifth identical charge is U = kq²/r where q = charge = +50 × 10⁻⁶ C  and r = distance from center of square. = √2 m (since the midpoint of the sides = 1 m, so the distance from the charge at the corner to the center is thus √(1² + 1²) = √2)

Since we have four charges, the additional potential energy to move the charge to the centre of the square is U' = 4U = 4kq²/r

U' = 4kq²/r

= 4 × 9 × 10⁹ Nm²/C² (+50 × 10⁻⁶ C)²/√2 m

= 900 Nm²/√2 m

= 636.4 J

The total external energy required is 636.4 J.

According to the question, a square of side a = 2m has 4 identical charges on the corners with charge Q = 50×10⁻⁶C.

A fifth identical charge is brought at the geometric center of the square. The geometric center is at the center of the diagonal:

\(r=\frac{a}{\sqrt{2} }=\sqrt{2}\;m\)

The potential energy is a state function which means that it depends on the initial and final position.

Now the energy required is equal to the change in potential energy

\(\Delta U=\frac{1}{4\pi\epsilon_o}\frac{4Q^2}{r}\\\\\Delta U=\frac{4\times9\times10^9\times(50\times10^{-6})^2}{\sqrt{2} } \\\\\Delta U=636.4\;J\)

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Answer:

by raising them in an environment in wich it is common and giving false information about other races to install bad stereo types and distrust in the child who will grow up to not know any better do to the dumb ignorant parent raised the same way

Explanation:

?????? thats all i got im not a politician BLM

Answer:

The correct options are;

1) The chemical composition of our solar system matches the chemical composition of the Milky Way

2) Nearly all atoms of elements heavier than helium were produced through nuclear fusion in stellar interiors and through reactions that occur during explosions that massive stars undergo at the ends of their lives or during mergers of stellar remnants called neutron stars

3) Some of the oldest galaxies are about 13.2 billion years old

4) Nucleosynthesis is a process through which the atoms of various elements are produced

5) You re mainly made of hydrogen

Explanation:

1) There are dependencies between chemical composition of stars and planets and the same distribution of chemicals we have in our Solar system have been observed to be present in varying resemblance through out the Milky Way

2) The formation of heavier elements are believed to have been formed by astrophysical fusion processes

3) The oldest known object (and hence the galaxy where the star resides), is from a distant star known as GRB 090423 which is about 13 billion years old

4) New atomic nuclear are created by the process of protons and neutrons by the process of nucleosynthesis

5) 62%of the atoms in the body are hydrogen atoms.

IEC 61131-3 standard programming language most closely replicates the control diagrams used in traditional magnetic motor control.

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Answer:

Astronauts who are orbiting the Earth often experience sensations of weightlessness. These sensations experienced by orbiting astronauts are the same sensations experienced by anyone who has been temporarily suspended above the seat on an amusement park ride. Not only are the sensations the same (for astronauts and roller coaster riders), but the causes of those sensations of weightlessness are also the same. Unfortunately however, many people have difficulty understanding the causes of weightlessness.

As you climb up a mountain, the temperature typically drops by approximately 3.5°F (2°C) for every 1000 feet (300 meters) of elevation gain.

Therefore, if you plan to climb 1500 meters, you can expect a temperature drop of around 10.5°F (6°C). This is due to the fact that the air becomes less dense as you climb higher, which means it cannot hold as much heat, leading to a decrease in temperature. This explanation applies to most mountainous regions, but it's important to note that local conditions can also play a role in temperature fluctuations.

Step 1: Use the standard lapse rate for dry air, which is approximately 9.8°C per 1000 m.

Step 2: Calculate the temperature drop for a 1500 m climb using the standard lapse rate.
Temperature drop = (lapse rate) × (altitude change) = (9.8°C/1000 m) × (1500 m)

Step 3: Simplify the equation.
Temperature drop = 14.7°C

So, during your 1500 m climb up the mountain, you can expect a temperature drop of approximately 14.7°C. This explanation assumes a consistent lapse rate, which may vary in real-world conditions.

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11. protect the cell and keep its shape.

12. chloroplast

Answer:

11. A. Protect the cell and keep its shape

13. C. Chloroplast

Hope this helps :)

The speed of the particle when t = 2 is 17m/s. Hence, the velocity and speed (in m/s) when t = 2 is 17 m/s.

Given that s = f(t) is the equation of motion of a particle that moves along a straight line where s is measured in meters and t in seconds. We are to find the velocity and speed (in m/s) when t = 2.At time t, the velocity of the particle is given by;v(t) = f'(t)

Differentiating s = f(t) partially w.r.t t, we have;f'(t) = ds/dt

Hence;v(t) = ds/dtIf t = 2, then the velocity of the particle is;v(2) = f'(2) = ds/dt ∣t=2

Evaluating the expression of s = f(t) at t = 2, we have;s = f(t) = 5t² - 3t + 2, therefore;s(2) = 5(2)² - 3(2) + 2= 20 - 6 + 2= 16 metersWhen t = 2;

The velocity of the particle, v(2) = ds/dt ∣t=2f'(t) = 10t - 3 = 10(2) - 3= 20 - 3= 17m/s

Therefore, the velocity of the particle when t = 2 is 17m/s.

To find the speed of the particle when t = 2, we can calculate the magnitude of the velocity, i.e,|v(2)| = √v²(2) = √17²= √289= 17m/s

Therefore, the speed of the particle when t = 2 is 17m/s. Hence, the velocity and speed (in m/s) when t = 2 is 17 m/s.

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Technician A is correct. Overhead cam engines with unit injectors can provide the greatest actuation force for the highest injection pressures compared to pushrod engines using a low-mounted camshaft.

In overhead cam engines, the camshaft is located directly above the valves, allowing for more direct and precise control of valve timing and lift. This design enables the use of unit injectors, which are capable of delivering high fuel pressures for efficient combustion. The camshaft directly actuates the unit injectors, providing a greater force and allowing for higher injection pressures.

On the other hand, pushrod engines use a camshaft located lower in the engine block with pushrods and rocker arms to actuate the valves. This design limits the actuation force that can be transmitted to the unit injectors, resulting in lower injection pressures compared to overhead cam engines.

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Answer:

There is no force in space.

Explanation:

Weight is the gravitational force acting on the mass as in space there is no gravity so weight appeares as zero

Answer:

It is because of gravity that your weight of a certain mass becomes zero in space.

Explanation:

The cardboard would be able to act as a better cell wall since it can act more closely to an actual cell wall. A cell wall has layers and covers the plant cells in order to protect it. The cardboard can cover it more with its layers rather than the jump rope.

The cardboard would be a better item than the jump rope because the cardboard would be able to act as a better cell wall since it can act more closely to an actual cell wall. The cardboard can cover it more with its layers rather than the jump rope.

A plant cell is a eukaryotic cell that contains a true nucleus and certain organelles to perform specific functions. However, some of the organelles present in plant cells are different from other eukaryotic cells.

The cell wall of a plant is made up of cellulose. Cellulose is a long, linear polymer of several glucose molecules.

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The rise in the water's temperature, given that 18200 joules was transferred to the 100.0 g of water is 43.5 °C

Heat transferred I related to temperature rise by the following formula:

Q = MCΔT

Where

With the above formula, we can determine the temperature rise as illustrated below.

The following data were obtained from the question:

Q = MCΔT

18200 = 100 × 4.184 × ΔT

18200 = 418.4 × ΔT

Divide both sides by 418.4

ΔT = 18200 / 418.4

ΔT = 43.5 °C

Thus, we can conclude from the above calculation that the temperature rise of the water is 43.5 °C

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