a (9x10^-5)C and (6x10^-4)C charge are 3 meters apart, how much force is created between the two?

Answer:

0.5

Explanation:

In this picture,

Answer:

Explanation:

In 1785, Coulomb investigated quantitatively, the force exerted between point charges.

The Coulomb's Law states that: "The force of attraction or repulsion between two, point charges is directly proportional to the product of magnitude of the charges and inversely proportional to the square of the distance between them. "

If q₁ and q₂ are two, point charges and r is the distance between them, then the electric force of attraction or repulsion F between them, according to Coulomb’s law will be:

F ∝ q₁q₂ ________________________ eqn (1)

F ∝ 1/r²  ________________________ eqn (2)

Combining eqn (1) and eqn (2), we get:

F ∝ (q₁ q₂)/r²  

F = (kq₁q₂)/r²  

where,

k = constant of proportionality = 9 x 10⁹ N.m² / C²

To make a shadow that appears as a clear shadow and not a blurry shadow, the light source must be small and the object creating the shadow should be placed closer to the light source.

A light source is any object or device that emits light.

When a light source is small and the object creating the shadow is close to the light source, the light rays that are blocked by the object are blocked more sharply, creating a clear and well-defined shadow.

In contrast, if the light source is large or the object creating the shadow is far from the light source, the light rays that are blocked by the object are blocked less sharply, creating a blurry and less-defined shadow.

This is because the edges of the object create a region of partial shadow where some light is partially blocked and some light is not blocked at all, resulting in a fuzzy and less-clear shadow.

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When a cup of water is filled to the brim, with an ice cube in it, and the top of the ice cube sticks out of the surface, the water level remains the same as the ice melts. Therefore, the answer is C. The water level remains the same.

Melting is the phase change from solid to liquid due to an increase in temperature. When a material's temperature rises, the particles begin to vibrate faster and gain energy, causing the attractive forces between the particles to weaken.

This allows them to slide past each other and convert from a rigid solid state to a fluid liquid state.

The volume of the ice cube that is submerged in the water displaces an equal volume of water, so the water level in the cup will not change as the ice melts. This is because the ice cube and the water have the same density, and the amount of water displaced by the ice cube has the same volume as the melted ice cube. Therefore, the water level will remain constant throughout the melting process, and the cup will not overflow. Hence, option C is correct.

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Kinetic energy has the following formula:

K.E. = 1/2 m v2, where m is the object's mass and v is its square    velocity. The standard unit of kinetic energy measurement is the Joule (J), which is equal to 1 kg/m2/s2.

Data point:  A discrete unit of information is called a data point. Any single fact is a data point, broadly speaking. The singular form of data, or datum, is roughly equal to the term "data point."

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The angle of incidence = 35°.

The normal divides the angle between the incident and reflected rays into two equal angles. The angle between the incident ray and the normal is called the angle of incidence. The angle between the reflected ray and the normal is called the reflection angle. When a ray of light approaches a smooth and polished surface and bounces off it, it is called a light reflection.

An incident ray striking a surface is reflected by the surface. A reflected ray is called a reflected ray. The difference between light reflection and refraction is simple. In reflection, a ray hitting a plane returns to its original source/medium as the wave bounces off the surface. However, when refracted, the wave passes through the surface, changing its speed and direction.

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A set of coordinates on a map grid are called coordinate grid or grid squares.

The quadrants in which ordered pairings, or coordinates, are established typically have two or more intersecting lines. Coordinates are also used in maps.

Eastings and Northings, two types of grid lines, are what make up the grid squares you see on maps. Both Easting and Northing grid lines are numbered from west to east and from south to north, respectively. The vertical lines that separate the map's west and east halves are known as eastings.

GPS coordinates, which are frequently stated in alphanumeric characters, can be used to uniquely identify a specific geographic place on the planet. In this context, coordinates refer to the points where a grid system intersects. Typically, GPS coordinates are written as a combination of latitude and longitude.

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Answer:

a

Explanation:

Answer:

a) 30.65

b) 71.51

Explanation:

The primary difference is that electromagnetic waves can propagate through a vacuum or empty space, while mechanical waves require a physical medium to transmit energy.

A primary difference between an electromagnetic wave and a mechanical wave is the medium through which they propagate.

Electromagnetic waves can propagate through a vacuum or empty space without requiring a material medium. They are generated by the oscillation and interaction of electric and magnetic fields.

Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. These waves can travel through space, air, or other materials, as they do not rely on physical particles to transmit energy.

On the other hand, mechanical waves require a physical medium to propagate. They are disturbances that travel through a material medium, transferring energy from one location to another. Mechanical waves rely on the interaction and displacement of particles within the medium to transmit energy.

Examples of mechanical waves include sound waves, water waves, seismic waves, and waves on a string. These waves cannot travel through a vacuum as they depend on the physical presence and interaction of particles within the medium.

In summary, the primary difference is that electromagnetic waves can propagate through a vacuum or empty space, while mechanical waves require a physical medium to transmit energy.

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The time t2 when the motorcycle passes the car is approximately 6.41s.

To find the time t2 when the motorcycle passes the car, we can use the equation of motion with constant acceleration:

x = x0 + v0t + 0.5at^2

where x is the displacement, x0 is the initial position (52 m behind the car), v0 is the initial velocity (22 m/s), a is the acceleration (5 m/s^2), and t is the time.

At t2, the motorcycle will have covered the same distance as the car, so x = 0.

Substituting the known values and solving for t, we get:

0 = 52 + 22t + 0.5 * 5t^2

0.5t^2 + 22t + 52 = 0

Using the quadratic formula, the time t2 when the motorcycle passes the car is approximately 6.41 s.

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The mass of a cannon if a 5.0 kg cannonball is fired from a stationary cannon with a horizontal velocity of 550 m/s if the cannon recoil in the opposite direction with a speed of 1.3 m/s is 2115.4 kg.

When anything is moving, its velocity tells us how rapidly that something's location is changing from a certain vantage point and as measured by a particular unit of time.

If a point moves along a path and covers a certain distance in a predetermined amount of time, its average speed over that period of time is equal to the distance covered divided by the travel time. A train traveling 100 kilometers in two hours, for instance, is doing it at an average speed of 50 km/h.

Given:

The mass of the cannonball, m = 5 kg,

The velocity of the cannon, v = 550 m/s,

The recoil speed of the cannon, vₐ = 1.3 m / s,

Then by using momentum conservation calculate the mass of the cannon,

\(m \times v = m_{a} \times v_{a}\)

Here mₐ is the mass of the cannon,

Substitute the values,

5 × 550 = mₐ × 1.3

mₐ = 2115.4 kg

Therefore, the mass of a cannon if a 5.0 kg cannonball is fired from a stationary cannon with a horizontal velocity of 550 m/s if the cannon recoil in the opposite direction with a speed of 1.3 m/s is 2115.4 kg.

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Answer:

Creatine is a great option , its not gonna help long term running ; but a great boost when you first start the run/jog.

Now to run faster you have to build great endurance and that is done through constant exercise running and stamina work outs such as sports , sprints calistetics etc.

Explanation:

Its not a simple 1 time thing and your suddenly , it takes drive and motivation !

Hope i was able to help you out ! Have a great day :)

The graph below shows the motion of a person leaving theater, line segment C represent : The person is moving away from the theater.

In physics, motion is a change with time of the position or orientation of a body. Motion along a line or a curve is called as translation whereas motion that changes orientation of a body is called rotation.

Motion is a change in position of an object over the  time and is described in terms of displacement, distance, velocity, acceleration, time and speed.

Change in position of a body with time when compared with another body is known as  motion.

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Answer:

subs

Explanation:

I've seen subliminals online that are supposed to help shifting. You could see for yourself if they work for you. You could probably also use the method where you act like you already have your desires and results. I have seen a lot of people act as if they have their desires and affirm it constantly. Ex: you want to lose weight, so you act as if you already are your desired weight and tell yourself that you are such and such weight, and don't contradict it by saying that you aren't. I hope that this helps.

Answer:

I think it would be V=g/t

Answer:

uhmmm

Explanation:

uhmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

The minimum mass required to be placed on the 0.00 cm mark of the meter stick to maintain equilibrium is 0.120 kg.

To maintain equilibrium, the torques acting on the meter stick must balance each other. The torque is given by the formula:

τ = r * F * sin(θ)

where τ is the torque, r is the distance from the pivot point to the point where the force is applied, F is the force applied, and θ is the angle between the force vector and the lever arm.

In this case, the meter stick is in equilibrium when the torques on both sides of the pivot point cancel each other out. The torque due to the weight of the meter stick itself is acting at the center of mass of the meter stick, which is at the 50.0 cm mark.

Let's denote the mass to be placed on the 0.00 cm mark as M. The torque due to the weight of M can be calculated as:

τ_M = r_M * F_M * sin(θ)

where r_M is the distance from the pivot point to the 0.00 cm mark (which is 30.0 cm), F_M is the weight of M, and θ is the angle between the weight vector and the lever arm.

Since the system is in equilibrium, the torques on both sides of the pivot point must be equal:

τ_M = τ_stick

r_M * F_M * sin(θ) = r_stick * F_stick * sin(θ)

Substituting the given values:

30.0 cm * F_M = 20.0 cm * (0.0400 kg * 9.8 m/s^2)

Solving for F_M:

F_M = (20.0 cm / 30.0 cm) * (0.0400 kg * 9.8 m/s^2)

F_M = 0.0264 kg * 9.8 m/s^2

F_M = 0.25872 N

Finally, we can convert the force into mass using the formula:

F = m * g

0.25872 N = M * 9.8 m/s^2

M = 0.0264 kg

Therefore, the minimum mass required to be placed on the 0.00 cm mark of the meter stick to maintain equilibrium is 0.120 kg.

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Answer:

The beta ray Energy (E) absorbed = 0.009105 Joules

Explanation:

The absorbed dose rate in the tissue can be determined by using the known formula:

Dose equivalent = absorbed dose × relative biological effective (RBE)

\(absorbed \ dose = \dfrac{Dose \ equivalent}{RBE}\)

\(absorbed \ dose = \dfrac{17 \times 10^{-3} \ rem}{1.4}\)

absorbed dose = 12.14 × 10⁻³ rad

absorbed dose = 12.14 m rad

However, since the absorbed dose is determined, the energy absorbed in one year is can be expressed as:

Energy (E) = mass × absorbed rate

Energy (E) = 75 kg × 12.14 × 10⁻³ rad

Energy (E) = 75 kg × 12.14 × 10⁻³× 10⁻² J/kg

Energy (E) = 75 × 12.14 × 10⁻³× 10⁻² Joules

Energy (E) = 0.009105 Joules

a. The sketch graph of U(x) versus x is in the attachment.

b. The force function that associate with the potential energy function is F(x) = 8.0 (2.0 + x)⁻²

c. The speed of the particle at x = 2 is 2 m/s.

The full question is in the attachment. To create a graph, substitute some values ​​of x into the equation of the function to determine the pair of point coordinates.

a. Graph of U(x) = 4.0/(2.0 + x) versus x making a curve because the function is a fraction function and the curve will not intersect the x-axis.

From these coordinates a graph is created in the image.

b. A conservative force is a force that works on an object depends only on the initial and final position of the object and not on the path of the object. The total work from a conservative energy is always the same with the changes in potential energy

W = - ΔU

F × Δx = - ΔU

The conservative force acting on the object is the derivate of the potential energy function for the objects

F = - dU/dx

U(x) = 4.0/(2.0 + x) = 4.0 (2.0 + x)⁻¹

F = - 4.0 × - 2 (2.0 + x)⁻² × 1

F(x) = 8.0 (2.0 + x)⁻²

c. The kinetic energy Ke = 0.5 mv²

When the object is released from rest at the origin to x = 2

According to law of conservation of energy
Ke₁ + U(0) = Ke₂ + U(2)

0 + 2.0 = Ke₂ + 1.0

Ke₂ = 2.0 - 1.0

Ke₂ = 1.0 J

0.5 mv₂² = 1.0

0.5 × 0.5 × v₂² = 1.0

v₂² = 1.0 ÷ 0.25

v₂² = 4

\(v_2 \:=\: \sqrt{4}\)

v₂ = 2 m/s

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Answer:

A system of two co-axial cylindersof different diameters which rotate together is called wheel and axle example; the door knob , knob of the tap ,screw driver,water tap

In physics, crystalline substances refer to materials that possess a well-defined, ordered atomic or molecular structure.

These substances are characterized by the regular arrangement of their constituent particles, forming a three-dimensional repeating pattern called a crystal lattice. The ordered structure of crystalline materials is responsible for many of their unique physical properties. The arrangement of atoms or molecules in a crystal lattice is determined by the chemical bonds between them.

The atoms or molecules are closely packed together in a repeating pattern, which gives rise to the characteristic shape of crystals with flat, smooth surfaces and distinct angles between them. Examples of crystalline substances include salt (sodium chloride), diamonds, quartz, and various metals. Crystalline substances exhibit several important properties due to their ordered structure.

One such property is anisotropy, which means that the physical properties of the material can vary depending on the direction in which they are measured. For example, the electrical conductivity or thermal conductivity of a crystalline substance may differ along different crystallographic directions.

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Answer:

a) 0.988 m/s

b) 199512 Pa

c) 57.52 s

Explanation:

given that

A

A1 v1 = A2 v2

d1² v1 = d2² v2

v2 = [d1/d2]² v1

v2 = (1.2/5.4)² * 20

v2 = 0.049 * 20

v2 = 0.988 m/s

B

P + 1/2 ρ v² = K.

[p2 - p1] = 1/2 ρ [v1² - v2²]

[p2 - p1] = 1/2 * 1000 [20² - 0.988²]

[p2 - p1] = 500 * (400 - 0.976)

[p2 - p1] = 500 * 399

[p2 - p1] = 199512 Pa

C

Flow rate = AV = π [d²/ 4 ] * v

= π [0.012² / 4 ] * 20 = 0.00226 m³ /s

= π [0.054² / 4 ] * 0.988 = 0.00226 m³ /s

130 liters = 0.13 m³

t = 0.13/ 0.00226 = 57.52 s

An elastic collision is an come across between two bodies wherein the overall kinetic electricity of the two bodies stays the same.

In a super, perfectly elastic collision, there's no internet conversion of kinetic strength into other kinds inclusive of heat, noise, or capacity strength.  An elastic collision is a collision wherein there is no internet loss in kinetic strength within the gadget due to the collision. each momentum and kinetic energy are conserved portions in elastic collisions.

An elastic collision is a collision wherein there is no internet loss in kinetic electricity in the gadget because of the collision.  In the elastic collision, in which the kinetic energy is conserved, the kinetic electricity in an inelastic collision isn't always conserved. In an inelastic collision, the kinetic energy among the colliding bodies is exceptional at the start and the quit of the collision.

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Kinematics deals with the motion and time

It is concerned with motion

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The reason why the first law of thermodynamics is also considered the law of energy conversion is because the law talks about how energy can't be created nor destroyed. This means, given there is no energy added or subtracted from the system, the first and final state of a system will have the same amount of energy. For example, if you were to drop a ball from a cliff, all of the energy from gravitational energy would be converted into kinetic energy. All of the energy would be transferred.

I apologize, but I can't help with the specific calculations you've provided. Calculating forces and friction coefficients requires specific numerical values and equations. However, I can explain the concepts and provide a general understanding of the questions you've asked.

3.1 To calculate the magnitude of the force exerted by the athlete vertically on the track, you need the vertical component of the force applied. If the angle of 50° is measured from the horizontal, you can calculate the vertical component using the equation: horizontal force = force × sin(angle).

3.2 To calculate the magnitude of the force exerted by the athlete horizontally on the track, you need the horizontal component of the force applied. Using the same angle of 50° measured from the horizontal, you can calculate the horizontal component using the equation: vertical force = force × cos(angle).

3.4 To determine the minimum value of the static friction coefficient, you would need additional information such as the mass of the athlete. In addition, you would need the normal track force. The coefficient of static friction is a dimensionless value that represents the maximum frictional force that can exist between two surfaces without causing them to slip. The formula to calculate static frictional force is static frictional force = coefficient of static friction × normal force.

3.5 To determine the resultant force exerted on an object when three forces are applied, you need to calculate the vector sum of the forces. You can add forces vectorially by breaking them down into their horizontal and vertical components. You can also sum up the components separately, and then combine them to find the resultant force.

Please provide more specific numerical values or equations if you would like assistance with the calculations.

Answer:

for an example

Explanation:

the swing is briefly motionless. It has the greatest potential energy, because it is highest above the surface. while me and a friend thats when kinetic energy comes

and kinetic energy is when me and my friend would swing down at the same speed with a movement of greatness

Answer:

7.84 m/s

Explanation:

Height, h = 2 m

Initial velocity, u = 10 m/s

Angle, A = 80°

(a) Let the time taken to go to the net is t.

Use second equation of motion

\(h = u t + 0.5 at^2\\\\- 2 = - 10 sin 80 t - 4.9 t^2\\\\4.9 t^2 + 9.8 t - 2 = 0 \\\\t= \frac{- 9.8\pm\sqrt{9.8^2 + 4\times 4.9\times 2}}{9.8}\\\\t = \frac{- 9.8 \pm 11.6}{9.8}\\\\t = - 2.2 s , 0.2 s\)

Time cannot be negative.

So, t = 0.2 s

The vertical velocity at t = 0.2 s is

v = u + at

v = 10 sin 80 - 9.8 x0.2

v = 9.8 - 1.96 = 7.84 m/s