A 65kg swimmer pushes off the pool wall and accelerates at 6m/s2. The friction experienced by the swimmer is 100n. What is the magnitude of the force that the swimmer applies on the wall?.

The x-component of the total momentum of the system before the collision is 9.850 kgm/s.

P = MV

3.94 x 2.50 m/s = 9.850kgm/s.

The definition of momentum is "mass in motion." Since every item has mass, if it is moving, it must have momentum because its mass is in motion. The amount of motion and the speed of the motion are the two factors that determine how much momentum an item possesses. An object's linear momentum sometimes referred to as translational momentum or simply momentum is the product of its mass and velocity.

It has both a magnitude and a direction, making it a vector quantity. If an item has mass m and velocity v, then it has momentum p. Momentum can be defined as the amount of motion. Quantity may be quantified in this case since an object has momentum if it is traveling and mass.

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Answer:

The velocity of the wave is 100 m/s.

Explanation:

Answer:

A. a balance and a beaker of water

Explanation:

The balance is for mass.

The beaker of water is for volume.

Iron has a greater atomic radius than calcium.

This comes from the fact that Iron has more electrons, this in turns means that the it has more shells and then the distance between its nucleos to the outer shells is greater.

Pregunta completa :

Un zapato de golf tiene 10 tacos cada uno con un área de 0.01 pulgadas en contacto con el piso suponga que al caminar hay un instante en que los tacos soportan el peso completo de una persona de 180 libras ¿cuál es la presión ejercida por los tacos sobre el suelo?

Responder:

12230825.435 pascal

Explicación:

Dado que:

Peso (W) = 180 libras

Número de tacos = 10

Área por montante = 0.01 in²

Área total (10 * 0.01) = 0.1 pulg²

Usando la calculadora de conversión:

180 libras = 81.647 kg

0.1 pulg² = 6.452 × 10 ^ -5 m²

Recordar :

Presión = Fuerza (Newton) / Área (m²)

Fuerza = masa * aceleración debida a la gravedad

Aceleración por gravedad = 9,8 m / s²

Presión = (81.647 * 9.8) / (6.452 * 10 ^ -5)

Presión = 800.1406 / 6.452 * 10 ^ -5

Presión = 12230825.435 pascal

If a liquid doesn't absorb visible light, the liquid would appear dark or opaque to us.

The absorption of light, especially visible light, makes an object dark or opaque. To some wavelengths of light, some materials are opaque, but some are transparent to others. Glass, for instance, is opaque to ultraviolet light, but it is transparent to visible light.

Since the liquid does not absorb visible light, to human eyes the liquid would appear dark or opaque. This is because human eyes are only sensitive to visible light. If the dark/opaque liquid actually reflects other lights, we wouldn't know (without the help of technology) since we don't see them.

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Answer:true

Explanation:

Displacement is the vector representation of a change in position. It is path independent and is equivalent to the straight line distance between the start and end locations. Distance is a scalar quantity that reflects the path traveled.

Answer:

This is known as a Waxing Crescent Moon. This Moon can be seen after the New Moon, but before the First Quarter Moon. The crescent will grow larger and larger every day, until the Moon looks like the First Quarter Moon.

a)the first overtone ,b)destructive interference c) 8 cm (first anti-node), 16 cm (second anti-node), and 24 cm (third anti-node), d) 8 cm, 16 cm, and 24 cm.

a. To determine the mode (m-value) of the standing sound wave, we need to use the formula m = (n-1)/2, where n is the number of nodes (points of zero displacement) in the wave. From the given information, we know that the tube is 32-cm-long and open at both ends, which means it can support waves with nodes at both ends and at one-third and two-thirds of the length. Therefore, n = 4. Plugging this value into the formula, we get m = (4-1)/2 = 1.5. Since m must be a whole number, we can round up to m = 2. Therefore, this is the second harmonic or the first overtone.

b. The air molecules are moving horizontally in a standing sound wave. This is because the wave is created by the interference of two waves traveling in opposite directions along the tube. When the waves meet, they create regions of constructive and destructive interference, which cause the air molecules to move back and forth horizontally.

c. The maximum amplitude of the oscillation occurs at the nodes (points of zero displacement) and anti-nodes (points of maximum displacement) of the wave. In this case, since the wave has 4 nodes, there are 3 anti-nodes. The distances from the left end of the tube where the molecules oscillate with maximum amplitude are: 8 cm (first anti-node), 16 cm (second anti-node), and 24 cm (third anti-node).

d. The air pressure oscillates in phase with the displacement of the air molecules. Therefore, the points of maximum displacement (anti-nodes) correspond to points of maximum pressure oscillation. The distances from the left end of the tube where the air pressure oscillates with maximum amplitude are the same as those for the molecules: 8 cm, 16 cm, and 24 cm.

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An import quota will increase the domestic price and, in the case of a large country, reduce the foreign price.

A quota is a restriction to the amount entering a rustic. With no alternate, equilibrium marketplace price within the USA will exist on the charge which equates domestic demand and home delivery, at P, and with output at Q. However, the arena price is possible to decrease, at P1, then the rate in a rustic that doesn't exchange.

An import quota is a restriction on the total quantity of imports that can be brought into a country in a given time period. It is a non-tariff barrier.

The main advantage of a quota is that it keeps the number of imports unchanged even if demand for imported articles increases.

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A renewable resource, also known as a flow resource, is a resource that gets replenished naturally to replace the portion depleted by usage and consumption.

Examples: solar energy, tidal energy, wind energy, hydro power, bio-energy etc.

A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace equal to keep up with consumption rate.

Examples: fossil fuels, natural gas, nuclear energy, natural gas etc

Answer:

I might be able to help, but I also might not. I need to check if I can get you the answer.

Explanation:

Answer:

Friction

Explanation:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Roll both a 10-sided fair die with an ace side and a 12-sided fair die with an ace side.

The chance that one, and only one, of the dice will land ace is 1/6.

Fair dice are those that have an equal chance of falling face-up on the table. When each face of a conventional 6-sided die has the same probability of 1/6, it can be said that the die is "fair."

.Probability is the possibility of rolling one die and getting a finite number (1, 2, 3, 4, 5, and 6). The fundamental principle of probability is to calculate it by dividing the number of outcomes that are possible by the result that you are anticipating. Therefore, a die has six faces or sides, and there are six equivalent likelihoods for each roll. Regardless of which number you select, there is only one result you are hoping for.

P (only one Ace) =\((1/10)(11/12)+(9/10)(1/12)\)

\(=20/120\)

\(=1/6\)

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Answer:

Forces make things speed up (or accelerate). When a force pushes or pulls the object, the object will move in the direction of the force. The bigger the force, and the lighter the object, the greater the acceleration.

Explanation:

Six valence electrons make up sulfur.Since valence electrons are the outermost electrons, they are found on the energy levels with the highest temperatures.

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that's happening ?????

To determine the electric flux through the top surface of the cube, we need to use Gauss's law:

Φ_E = E * A * cos(θ)

where Φ_E is the electric flux, E is the electric field, A is the area of the surface, and θ is the angle between the electric field and the normal to the surface.

In this case, the charge is at the center of the cube, which means the electric field will be radially outward in all directions from the center. Therefore, the electric field will be perpendicular to the top surface of the cube, and θ will be 0.

Assuming that the edge length of the cube is "a", the area of the top surface is a^2. By symmetry, the electric field will be the same magnitude at every point on the top surface, and we can use Gauss's law to find the electric flux through the top surface of the cube:

Φ_E = E * A * cos(θ) = E * a^2 * cos(0) = E * a^2

The electric field due to a point charge at a distance "r" from the charge is given by:

E = k * Q / r^2

where k is Coulomb's constant, Q is the charge, and r is the distance from the charge. In this case, Q = 10 nC and the distance from the charge to the center of the top surface is a/2. Therefore:

E = k * Q / r^2 = (9 × 10^9 N m^2/C^2) * (10 × 10^(-9) C) / [(a/2)^2] = (36 × 10^3 N/C) / a^2

Substituting this expression for E into the equation for electric flux, we get:

Φ_E = E * a^2 = [(36 × 10^3 N/C) / a^2] * a^2 = 36 × 10^3 N m^2/C

Therefore, the electric flux through the top surface of the cube is 36 × 10^3 N m^2/C.

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Answer:

B

Explanation:

Answer:

B) 350 kg m/s

Explanation:

momentum or p is given by the equation p= mxv

We have the mass and velocity so we can use the equation directly

p= 72kg x 4.9 m/s

p= 352.8 kg m/s

The minimum angle is such that the ladder may not slip will be 21.80°.

The ratio of the greatest static friction force (F) between the surfaces in contact before movement begins to the normal (N) force is the coefficient of static friction.

The given data in the problem is;

The coefficient of friction between the ladder,(μ)= 0.40N

The minimum angle is such that the ladder may not slip is, Θ

The frictional force must be smaller than the maximal static friction force to prevent slippage. To denote the ratio of the opposite and adjacent sides of the ramp, we'll use constants like.

The minimum angle such that the ladder may not slip is;

tanΘ=μ

Θ=tan⁻¹(μ)

Θ=tan⁻¹(0.40)

Θ=  21.80°

Hence the minimum angle is such that the ladder may not slip will be 21.80°.

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Answer:

Potential energy is stored energy and the energy of position.

Explanation:

There are several forms of potential energy. Kinetic energy is motion of waves, electrons, atoms, molecules, substances, and objects. Chemical Energy is energy stored in the bonds of atoms and molecules.

( Hope this helps )

Answer:

because nono gravity

Explanation:

no gravity

Electromagnetic force is the force that moving, charged particles exert on one another.

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Answer:

1. Following the recoil principle, rockets use combustion (a controlled explosion) to work against earth's gravitational attraction.

2. A force is a push or a pull that acts upon an object as a results of its interaction with another object. ... These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.

(via physicsclassroom.com)

3. The combustion throws out material with very high momentum and is, physically speaking, the action. In reaction to that that, the rocket moves away from it (upward when in starts and has the action underneath it)

4. To show the world that commercial manned space missions are safely possible. Some may also like the fact that the US can now do, or rather order, manned flights into space without the help of the russian space agency (Roskosmos).

5. Robert Behnken and Douglas Hurley

6. The international space station (ISS)

7. Yes, Stage 1 of the rocket landed on the drone ship. The crew opened the hatch to enter the space station after 21 hours and 39 minutes after the launch from Cape Canaveral.

8. To have private contractors such as SpaceX actively in the field, there are now more interest groups that participate in space travel. And they can interact with other companies as well.

Also, due to Musks dream and efforts of SpaceX, space travel seems to get a lot cheaper.

That might indeed open the way back to the moon and further to the Mars for human space flight.

Governments such as the US planned on such things for decades, but changed plans ever since, and routinely changed leadership and the opinion on what's important.

Now Spaceflights can become less politically motivated and more commercially. That seems to be a more stable way over long periods of time.

(wrote most of it for you myself, even tough I'm not a native English speaker. would really appreciate the brainliest if you appreciate the work)

Answer:

yhgfty

Explanation:

cdfgv

Answer:

Liquid water is essential for life to exist. Water can occur in a liquid state only within a specific temperature range, so knowing the temperature range on a planet will help astronomers predict whether life exists on that planet.

Friction can be defined as a type of force that prevents two smooth surfaces from sliding together on each other. Friction is a strong force that opposes motion when two surfaces come in contact with each other.

The different methods/ways to reduce friction include;

- Application of lubricant to surfaces

- Streamlined bodies; this goes a long way in preventing friction between two bodies.

- Decrease in weight; reducing the amount of weight on a substance can also help to reduce friction

- Applying wheels to objects that move/roll on the ground.

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