protons within a nucleus are attracted to each other by group of answer choices the nuclear force. opposite charges. their energy levels. electron repulsion.

The time submarine passes a marker that is 125 km from shore is 3.87 hr.

Speed is the directional velocity of an object in motion as a demonstration of its price of alternate in function as discovered from a particular frame of reference and as measured by way of a specific preferred time.

velocity is the top indicator of the placement in addition to the rapidity of the item. it may be described as the distance protected by way of an item in unit time. velocity may be defined as the displacement of the item in unit time.

velocity is the quickness of movement or movement. A synonym is a celerity; a less difficult phrase is pace. In physics, pace especially refers to the dimension of the price and route of an alternate in the function of an item.

calculation:-

velocity = displacement/time

             = 290 / 9

              = 32.22 km/hr

new distance = 125 km

velocity is constant = 32.22 km/hr

time = displacement/velocity

        = 125/32.22

         = 3.87 hr

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The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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Answer:

The pressure under water . It presses against your head

Explanation:

Answer:

200 meters+1000 meters+800 meters=2000 meters or 2km

Explanation:

1km=1000m

The difference between colloid and emulsion is that a colloid can form when any state of matter (solid, liquid or gas) combine with a liquid whereas an emulsion has two liquid components which are immiscible with each other.

Answer:

wrthfnhdghkyulyf

Explanation:

zdfhdfhghdhddddddddddddddddddddd

Answer:

1st: Radiation

2nd: Conduction

3rd: Convection

Explanation:

I actually learned this before in school. Yay

When a light wave moves from air to water, two quantities that change are the wave's speed and direction.

The change in these quantities is due to the change in the refractive index of the medium.

Speed:

The speed of light in a medium depends on the refractive index of that medium. When light passes from air to water, the refractive index of water is higher than that of air.

As a result, the speed of light decreases as it enters the denser medium of water. This decrease in speed is described by Snell's law, which relates the angle of incidence and refraction of light at the interface between two media.

Direction:

The direction of the light wave also changes as it moves from air to water. This change in direction is known as refraction. Refraction occurs because the change in speed of the light wave causes it to bend at the interface between the two media.

The bending of the light wave is governed by Snell's law, which states that the angle of incidence is related to the angle of refraction by the refractive indices of the two media.

In summary, when a light wave moves from air to water, its speed decreases and it changes direction due to the change in the refractive index of water compared to air.

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Answer:

131.25

Explanation:

i worked it out on a diffrent sheet so its hard to explain

Answer:131 is the right answer

Explanation:

We can find direction by electric field diagram and magnitude remain the same despite of a change in positions.

When a proton is placed at point A and an electron is placed at point B, the direction of the electric force F is determined by the electric field line diagram. The electric force between the two charges is a vector force, which means it has both a magnitude (strength) and a direction.

The magnitude of the electric force F between a proton and an electron is determined by Coulomb's Law, which states that the magnitude of the force between two charges is in direction proportion to charges' product and in inverse proportion with their distance squared.

to the product of the two charges and inversely proportional to the square of the distance between them. Thus, the magnitude of the electric force F between the charges is independent of the direction, so the magnitudes of the electric force F between a proton and an electron, regardless of their positions, will always be the same.

The direction of the electric force F, however, is determined by the electric field line diagram. In the diagram, the electric force F is directed away from the positive charge (the proton) and toward the negative charge (the electron). Therefore, the electric force F will be directed away from point A and toward point B, making the angle relative to the +x axis clockwise, with a positive angle.

In summary, the magnitude of the electric force F between a proton and an electron will remain the same regardless of the positions of the particles, while the direction of the electric force F will be determined by the electric field line diagram, with the angle relative to the +x axis clockwise, with a positive angle.

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Given:

\(m=0.40kg\)

\(k=160\frac{N}{m}\)

\(A=0.10m\)

We know that the velocity of a mass attached to a spring is greatest when passing through equilibrium. Using the following formulas we can compute velocity.

\(v_{max} =\pm Aw\) and \(w=\sqrt{\frac{k}{m} }\)  \(\Longrightarrow v_{max} =\pm A\sqrt{\frac{k}{m} }\)

\(\Longrightarrow v_{max} =\pm A\sqrt{\frac{k}{m} }\)

\(\Longrightarrow v_{max} =\pm (0.10)\sqrt{\frac{160}{0.40} }\)

\(\Longrightarrow v_{max} =\pm (0.10)(20) }\)

\(\Longrightarrow v_{max} =\pm 2.0\frac{m}{s}\)  

(a) The period of a wheel can be found by dividing the time it takes for each revolution by the number of revolutions per period.

(b) The angular speed of the wheel in rad/s can be determined by dividing 2π (the full angle in radians) by the period.

(a) To find the period of the wheel, we divide the time it takes for each revolution (2.25 s) by the number of revolutions per period. Since the wheel completes one revolution per period, the period is equal to the time per revolution. Therefore, the period of the wheel is 2.25 s.

(b) The angular speed of the wheel can be calculated by dividing the full angle in radians (2π) by the period. Since the wheel completes one revolution per period, the angle traversed is 2π radians. Dividing 2π by the period of 2.25 s gives us the angular speed of the wheel in rad/s. Thus, the angular speed of the wheel is approximately 2.79 rad/s.

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Answer:

The resulting speed of the ball is;

10 m/s

Explanation:

The given parameters are;

The amount of work done by the lever = 5.0 J

The mass of the ball on which the work is done, m = 0.10 kg

By the principle of conservation of energy, we have;

The work done by the lever = The kinetic energy. K.E., gained by the ball

The kinetic energy, K.E., is given by K.E. = 1/2·m·v²

Where, for the ball, we have;

m = The mass of the ball

v = The resulting speed of the ball

Therefore, by substituting the known values, we have;

The work done by the lever = 5.0 J = The kinetic energy. K.E., gained by the ball =  1/2 × m × v² =  1/2 × 0.10 kg × v²

∴ 5.0 J = 1/2 × 0.10 kg × v²

v² = 5.0 J/(1/2 × 0.10 kg) = 100 m²/s²

v = √(100 m²/s²) = 10 m/s

The resulting speed of the ball, v = 10 m/s.

a) The center of mass is 28 cm from the 800 g ball. b) The rotational kinetic energy is 0.63 J if the structure rotates about its center of mass at 100 rpm.

To find the center of mass of the system, we need to consider the mass and position of each component. Since the rod is 40 cm long and has a mass of 200 g, we can treat it as a point mass located at its midpoint, which is 20 cm from each ball. The center of mass is then the weighted average of the positions of the three point masses. Using the formula for the center of mass, we find that the center of mass is 28 cm from the 800 g ball.To find the rotational kinetic energy, we need to know the moment of inertia of the system and the angular velocity. Since the system is rotating about its center of mass, we can use the parallel axis theorem to find the moment of inertia. The moment of inertia of the two balls is 0.14 kgm^2, and the moment of inertia of the rod is 0.004 kgm^2. The total moment of inertia is then 0.144 kg*m^2. Converting 100 rpm to radians per second, we get an angular velocity of 10.47 rad/s. Using the formula for rotational kinetic energy, we find that the rotational kinetic energy is 0.63 J.

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Answer:

east

Explanation:

15km east

_______________

              X________

                    8km west

so you are where the xX is so you are still in the eastward direction

Answer:

electromagnet

Explanation:

mark me as brainlest

Answer:

We can find out a direction by freely suspending a bar magnet. We will find that freely suspended bar magnet always comes to reset in a North- South direction.

Explanation:

Distance from the central maximum on the screen will a dark fringe from one pattern first coincide with a dark fringe from the other is -0.26 mm

Since the slit separation is 2.0 mm , and two wavelengths, 900 nm and 700 nm , illuminate the slits. A screen is placed 2.6 m from the slits

λ\(1\) = 900 nm

λ\(2\) = 700 nm

D = 2.6 m

d = 2 mm

The distance is calculated using formula ,

\(Y\)= λD/d

Hence,

\(Y1\) = λ\(1\) D/d

\(Y2\) = λ\(2\) D/d

\(Y1\) = 900 × \(10^{-9}\) × 2.6 / 2 × \(10^{-3}\)

Therefore, \(Y1\) = 1.170 mm

\(Y2\) = 700 × \(10^{-9}\) × 2.6 / 2 × \(10^{-3}\)

Therefore, \(Y2\) = 0.910 mm

So the spacing between these two bright stripes is:  \(Y2\) -\(Y1\)  = -0.26 mm

Young's double-slit experiment uses two coherent light sources spaced apart. Usually only a few orders of magnitude larger than the wavelength of light are used. Young's double-slit experiment helped us understand the wave theory of light.

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The frequency that the bad guy hear is 12000 hz when the police car is moving with speed of 80m/s.

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Answer:

The spring constant is approximately 46.382 newtons per meter.

Explanation:

From Physics, the period (\(T\)), measured in seconds, experimented by an object under Simple Harmonic Motion:

\(T = 2\pi\cdot \sqrt{\frac{W}{g\cdot k} }\) (1)

Where:

\(W\) - Weight, measured in newtons.

\(g\) - Gravitational acceleration, measured in meters per square second.

\(k\) - Spring constant, measured in newtons per meter.

If we know that \(W = 127\,N\), \(g = 9.807\,\frac{m}{s^{2}}\) and \(T = 3.32\,s\), then the spring constant of the system is:

\(\frac{T^{2}}{4\cdot \pi^{2}} = \frac{W}{g\cdot k}\)

\(k = \frac{4\cdot \pi^{2}\cdot W}{g\cdot T^{2}}\)

\(k \approx 46.382\,\frac{N}{m}\)

The spring constant is approximately 46.382 newtons per meter.

The speed the spy satellite must have to maintain this orbit is approximately 3077 m/s.

What is Speed?

Speed is a measure of how fast an object is moving, defined as the distance traveled per unit of time. It is a scalar quantity, meaning it only has a magnitude (i.e., a numerical value) and no direction.

The speed required for an object to maintain a circular orbit around the Earth can be calculated using the formula v = √(GM/r), where G is the gravitational constant, M is the mass of the Earth, and r is the distance between the center of the Earth and the object. Plugging in the given values, we get v = √((6.67×\(10^{-11}\) \(Nm^{2}\)/\(kg^{2}\)) × (5.97×\(10^{24\) kg) / (2400 km + 6371 km)) = 3077 m/s.

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Answer:

please take clean picture

To determine the density of the rock divide its mass by the volume. And for determining the volume use Archimedes' principle.

An object at rest in a liquid experiences an upward force, called buoyancy, equal to the weight of the liquid it displaces. When the body is completely submerged, the volume of liquid displaced equals the volume of the body.

For the given case:

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1. 15 m

2. 71.5 m

3. not sure but maybe 10 9/13 s

Answer:

Electrical breakdown.

Explanation:

When two conductors are relatively close enough, and have a very large voltage between them, it can lead to a Dielectric breakdown. A dielectric breakdown occurs when an insulator is subjected to a high enough voltage, suddenly becomes an electrical conductor and electric current flows through it. The air between the conductors is the insulator that breaks down, leading to an electrical discharge arc to flow between the two conductors. This electrical breakdown can cause catastrophic failure of electrical equipment, and fire hazards.

The terms Exothermic and Endothermic describe how energy flows in a chemical reaction. The correct option is D.

The bonds between molecules are formed and disrupted during chemical reactions.

When new bonds are created, energy is released. In contrast, energy is absorbed to dissolve bonds. Bond energy is the required force to dissolve the bonds.

When bonds in the reactants are broken in endothermic reactions, more energy is absorbed than is released when new bonds are created in the products.

The temperature of the reaction mixture drops during endothermic reactions.

Thus, the correct option is D.

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Answer:

The right answer is c because when we heat solid object the molecule will start lose attraction on object

Explanation:

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The angular velocity of the skater during the finale is 2.18 rad/s.

The conservation of angular momentum is a principle in physics that states that the total angular momentum of a system remains constant if no external torques act on the system. Mathematically, this can be expressed as L1 = L2, where L1 is the initial angular momentum of a system, L2 is the final angular momentum of the system, and the total torque acting on the system is zero. This principle is analogous to the conservation of linear momentum, which states that the total linear momentum of a system remains constant if no external forces act on the system. The conservation of angular momentum is an important principle in many areas of physics, including mechanics, electromagnetism, and quantum mechanics.

We can use the conservation of angular momentum to solve this problem. The initial angular momentum of the skater and the hand-arms is given by:

L1 = I1 * w1

where I1 is the moment of inertia of the skater's body, and w1 is the initial angular velocity. Since the hand-arms are extended, their moment of inertia can be neglected.

When the skater pulls their arms inward, the moment of inertia of the system decreases. The final moment of inertia is given by:

I2 = I1 + 2md^2

where m is the mass of each hand-arm, d is the distance of the hand-arm from the axis of rotation, and we multiply by 2 since there are two hand-arms.

The final angular velocity w2 can be found by equating the initial and final angular momentum:

L1 = I1 * w1 = I2 * w2

Substituting the expressions for I1, I2, and simplifying, we get:

w2 = w1 * I1 / (I1 + 2m(d2^2 - d1^2))

where d1 is the initial distance of the hand-arm from the axis of rotation (0.60 m), and d2 is the final distance of the hand-arm from the axis of rotation (0.20 m).

Substituting the given values, we get:

w2 = 0.50 m/s * 1.719 kgm^2 / (1.719 kgm^2 + 2 * 5.0 kg * (0.20 m^2 - 0.60 m^2))

w2 = 2.18 rad/s

Therefore, The skater's angular velocity during the grand finale is 2.18 rad/s.

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Answer:

they will increase why because they go from warm cold warm meaning they have to adapt back to the previous location

Explanation:

ANSWER

EXPLANATION

Parameteters given:

Initial velocity = 190 m/s

To find the maximum height, we apply the formula for the maximum height of a projectile:

where u = initial velocity

θ = angle with the horizontal

g = acceleration due to gravity = 9.8 m/s²

From the question, the projectile is fired vertically upward. This means that the projectile will make a 90° angle with the horizontal.

Therefore, we have that the maximum height of the projectile is:

Answer:

Height is equal to 1841.8367m

Explanation:

KE = GPE

Write out the formula

1/2(m)(v^2) = mgh

Fill it with the information you have

1/2(190^2) = (9.8)(h)

Solve

1/2(36100) = 9.8h

18050 = 9.8h

1841.83673 = h

Write the complete answer out

Maximum height is equal to 1841.8367m (meters)