A 0.05 kg ball moving at 25 m/s

Coulomb's law describes how the charge on and distance between two

particles affect the electric force between them. When both particles have a positive charge the situation will result in two particles being repelled by each other, the correct option is A.

Coulomb's law can be expressed as that the electrical force between two charged bodies is directly proportional to the product of the quantity of charge on the bodies and inversely proportional to the square of the separation distance between the two bodies.

The mathematical expression for Coulomb's law is expressed as

F=kQ₁Q₂/r²

F is the electric force

k is the Coulomb constant

Q₁ and Q₂ are the  charges

r is the distance of separation between the charges

In accordance with Coulomb's law when both particles have a positive charge the situation will result in two particles being repelled by each other, therefore the correct option is A.

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none of them

Explanation:

the horizontal speed doesn't matter and if i got it right both of them started from the same height and both of them fell to the water (none of the jumped *higher only farther) and that's the only thing that matters. so they'll both end up there at the same time cause only gravity is affecting their movement process among the way.

In the movie Planes: Fire & Rescue, the helicopter refills its water tanks from a natural reservoir near the beginning of the movie. Therefore, option d, a reservoir is correct.

In this scene, the helicopter named Dipper flies over to the reservoir, dives down, and scoops up water into her water tanks before heading back to the fire to extinguish it. The reservoir is a significant source of water for the firefighters since it is too far for the fire trucks to drive to, which could take more time.

The fire was growing quickly, and Dipper, the helicopter, played a crucial role in containing it. When the fire gets out of control, and the fire brigade cannot handle it, the firefighters call in a team of aircraft firefighters who use helicopters that can scoop up huge amounts of water from the lake and drop it on the fire to extinguish it.

The Planes: Fire & Rescue is a movie that follows Dusty's journey as he navigates life as a firefighting plane after learning that his racing days are over. It's a family-friendly movie that is sure to keep everyone entertained.

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Answer:

3)No, it's speed is constant.

The y -component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum

In terms of science, electromagnetic radiation (EMR) is made up of electromagnetic (EM) field waves that travel over space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, visible light, ultraviolet, and radio waves. These waves are all a component of the electromagnetic spectrum.

Electromagnetic waves, which are synchronized oscillations of the electric and magnetic fields, are the traditional form of electromagnetic radiation. Due to the periodic alteration of the electric or magnetic field, electromagnetic radiation or waves are produced. Different wavelengths of the electromagnetic spectrum are created depending on the manner in which this periodic change takes place and the power generated. Electromagnetic waves move at the speed of light, typically abbreviated as c, in a vacuum. The oscillations of the two fields are perpendicular to one another and perpendicular in homogeneous, isotropic media.

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Answer:

10V

Explanation:

Applying V = IR

V = 5A × 2 ohms

V= 10 V

Potential difference or voltage is needed to make a current of 5A glow through a material with a resistance of 2 ohms is  10 V.

The difference in electric potential between two places is known as voltage, often referred to as electric pressure, electric tension, or potential difference. It relates to the amount of labor required to transfer a test charge between two places in a static electric field.

V = IR

V = 5A × 2 ohms

V= 10 V

Potential difference or voltage is needed to make a current of 5A glow through a material with a resistance of 2 ohms is  10 V.

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Answer:Sure, here are some potential topic questions related to Fitzgerald's view of the American Dream in The Great Gatsby:

1. How does Fitzgerald portray the American Dream through the character of Jay Gatsby? What does Gatsby's pursuit of wealth and status say about the values of the time?

2. What commentary does Fitzgerald offer on the idea of the "self-made man" in The Great Gatsby? How do characters like Gatsby and Tom Buchanan embody different versions of this ideal?

3. What role does social class play in the novel, and how does it relate to the American Dream? How does Fitzgerald challenge the idea that hard work and determination are the only factors that determine one's success in life?

4. How does the theme of disillusionment relate to Fitzgerald's view of the American Dream in the novel? What does the ending of the book suggest about the viability of this dream in the 1920s?

To answer these questions, you could analyze specific passages from the novel, consider the historical context in which it was written, and examine the characters' motivations and actions throughout the story. You could also explore how the novel reflects broader themes and trends in American society during the time period.

Explanation:

Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

Answer:

C

Explanation:

b is 55 miles per hour south  or 55mph[South]

the important part to understand is that velocity is a vector meaning it also has to have a direction, in this case south. That is why a (2m/s) is not a velocity, however 2m/s is a speed.

Answer:

A ( Jack did twice as much work as Jill

Explanation:

The 3 Ways to cooping with work related stress is to adopt healthy habits, seek social support, and engage in activities that promote relaxation.

The following are three ways to cope with work-related stress:

Exercise- Exercise is a simple yet effective way to reduce stress. When you exercise, your body releases endorphins that are natural mood boosters. Exercise helps to reduce the level of cortisol, which is a stress hormone. The best exercises to do when stressed include yoga, aerobics, walking, jogging, cycling, or dancing.

Engage in relaxation activities-  Engaging in relaxation activities such as meditation, deep breathing, or progressive muscle relaxation helps to relax your mind and body. Deep breathing helps to reduce muscle tension, lower blood pressure and reduce the level of cortisol in the body. Progressive muscle relaxation involves tensing and relaxing muscle groups in the body, one at a time. This technique helps to reduce muscle tension and improve relaxation.

Social support- Social support from family, friends, or colleagues can be a great way to cope with work-related stress. Talking to someone about your problems can help you to gain a different perspective on your situation and feel less isolated. Talking to a colleague can also help to create a supportive work environment. It is essential to identify a trusted confidant who can listen and provide support when you are feeling overwhelmed.

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Answer:

If I understand correctly. Line B is parallel to the circle. Also, the angle is less than 90.

'Circle' is characterized as "a two-dimensional geometric figure comprising of the set of all those points in a plane that are at equal distance from the center."

1). Line B would be considered as the 'tangent' in association with the given circle.

2). The angle lying among the lines A and B would be of 90° i.e. right angle.

Given that,

A circle with line A drawn through its center

Line B moves while touching the edge of the circle and intersects line A outside the circle.

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Answer:

Greenhouse gases include carbon dioxide, methane, nitrous oxide and other gases that accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life.

The question relies on conservation of energy

2 Energy equations:

Kinetic Energy = 1/2mv^2

Gravitational potential energy = mgh

Initial energy = final energy

1/2m(v0)^2 = mgh + 1/2m(vf)^2

Divide mass out to save time

1/2(v0)^2 = gh + 1/2(vf)^2

PLug in what we know:

v0 = 39 m/s

h = 21 meters

1/2(39)^2 = 9.8(21) + 1/2(vf)^2

1/2(39)^2 - 9.8(21) = 1/2(vf)^2

554.7 = 1/2(vf)^2

1109.4 = (vf)^2

vf = 33.3076 m/s

When a projectile is fired into viscous medium at a speed of 1000 m/s, the acceleration profile inside the medium is a function of its viscosity.

A projectile fired into viscous medium will experience drag, which is the force acting opposite to its motion, and will thus lose speed as it moves through the medium. The viscous drag force acting on a body moving through a fluid is proportional to the velocity of the body and the viscosity of the fluid. When a body is moving through a viscous medium, the drag force will increase until it reaches a maximum value, at which point the object will stop accelerating and reach a steady-state speed. This is known as the terminal velocity of the projectile.

The acceleration profile inside the medium can be calculated using the following formula:

a = (F - bv)/m

Where a is the acceleration of the projectile, F is the force acting on it, b is the drag coefficient, v is the velocity of the projectile, and m is the mass of the projectile. As the projectile moves through the viscous medium, its velocity will decrease due to the drag force acting on it, and its acceleration will decrease accordingly until it reaches zero when the velocity reaches the terminal velocity. Therefore, the acceleration profile inside the medium will depend on the projectile's initial velocity, the viscosity of the medium, and the drag coefficient. The higher the viscosity of the medium, the greater the drag force and the lower the acceleration of the projectile.

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The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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Answer:

D: The ability to do work or cause change.

Explanation:

Energy can be defined as the ability to do work. We apply energy in basically everything we do in life, energy is needed to walk or move from one position to another, it is required to eat and do other basic things of life. The body system converts the food that is being consumed into energy, this energy can be switched from one form to another.

There are various forms of energy which include solar energy, wind energy, electrical energy, mechanical energy, kinetic energy, potential energy, etc. This form of energy can be converted from one form to another but cannot be destroyed.

Hope this helps :)

On the screen, 200 cm behind the slits, the fringe spacing will be 8 mm.

Due to its dependence on L, the spacings between various fringes get smaller as the distance between the slits gets more. The space between various fringes grows as the light's wavelength rises because this is a wavelength-dependent property.

The equation: gives the screen's fringe spacing in a double-slit experiment.

dsin(theta) = mlambda

The fringe spacing will therefore double if the screen distance is increased from 100 cm to 200 cm.

The new fringe spacing will be as follows:

2 * 4 mm = 8 mm

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Answer:   What do you think happens to the volume of gas inside the balloon? As the temperature increases, the gas particles absorb more heat energy. They speed up and move farther away from one another. So the increase in temperature causes an increase in volume.

Explanation:

Lenz's law is a basic principle of electromagnetism that specifies the direction of induced current that is produced by a change in magnetic field. According to Lenz's law, the direction of the induced current in a circuit must flow in such a way as to oppose the change in magnetic flux.

In other words, the induced current should flow in such a way that it produces a magnetic field that opposes the change in magnetic field that produced the current. This concept is based on the conservation of energy and the principle of electromagnetic induction.

Lenz's law is an important principle that has many practical applications, especially in the design of electrical machines and devices.

For example, Lenz's law is used in the design of transformers, which are devices that convert electrical energy from one voltage level to another by using the principles of electromagnetic induction.

Lenz's law is also used in the design of electric motors, which are devices that convert electrical energy into mechanical energy by using the principles of electromagnetic induction.

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Answer:

Frequency – The frequency of a wave is the number of waves that pass a given point in a certain amount of time. Frequency is measured in units called hertz (Hz), and is defined as the number of waves per second. A wave that occurs every second has a frequency of 1 wave per second (1/s) or 1 Hz.

Answer:

a = 5 m / s²   and    x = 562.5 m

Explanation:

Let's apply the kinematics relations

          v = v₀ + at

          v² = v₀² + 2a x

In this case, as the car stops, its final speed is zero (v = 0) and the acceleration must be opposite to the speed, that is, negative

           0 = v₀ - a t

           a = v₀ / t

let's calculate

           a = 75/15

           a = 5 m / s²

let's look for the distance

           0 = v₀² - 2a x

           x = v₀² / 2a

let's calculate

           x = \(\frac{75^2}{2 \ 5 }\)

           x = 562.5 m

Answer:

B - 0.18N/cm

Explanation:

The spring formula:

      Force =  - (spring constant) · (distance stretched or squashed)

          6 N  =  - (spring constant) · (33 cm)

                  =  - (0.33 m) · (spring constant)

         Spring constant  =   - (6 N) / (0.33 m)

                                     =    - 18.18 N/meter .

The negative signs mean that the spring always wants to go in the

opposite direction from where you forced it, and return to its relaxed

length.  If you stretch it, it tries to get shorter, and if you compress it,

it tries to get longer.

Answer:

Explanation:

The work done by an object can be found by using the formula

From the question

weight = 2 N

distance = 4 m

We have

workdone = 2 × 4

We have the final answer as

Hope this helps you

Write each force in component form:

v ₁ : 50 N due east   →   (50 N) i

v ₂ : 80 N at N 45° E   →   (80 N) (cos(45°) i + sin(45°) j ) ≈ (56.5 N) (i + j )

The resultant force is the sum of these two vectors:

r = v ₁ + v ₂ ≈ (106.5 N) i + (56.5 N) j

Its magnitude is

|| r || = √[(106.5 N)² + (56.5 N)²] ≈ 121 N

and has direction θ such that

tan(θ) = (56.5 N) / (106.5 N)   →   θ ≈ 28.0°

i.e. a direction of about E 28.0° N. (Just to clear up any confusion, I mean 28.0° north of east, or 28.0° relative to the positive x-axis.)

Answer:

C. 199.9 s

Explanation:

3 minutes = 3×60 = 180 seconds.

the turtle moves in that time 180×10 = 1800 cm.

in other words the rabbit gave it that much head-start (it does not matter if that was at the begin of in the middle of the race).

the rabbit moves with 10×10cm/s = 100cm/s.

the rabbit needs therefore 1800/100 = 18 seconds for the

1800 cm.

at that time the turtle has added another 18×10 = 180 cm.

for which the rabbit needs 180/100 = 1.8 seconds.

during that time the turtle has added 1.8×10 = 18 cm.

and so on.

in formal mathematics this looks like this :

1800 + 10x = 100x

after x seconds of the rabbit running both will have run the same distance, and it is a tie.

1800 = 90x

x = 20 seconds

so, at that point, the rabbit was actively running for 20 seconds and raced 20×100 = 2000 cm

and the turtle was actively running for 180 + 20 = 200 seconds, and also covered 200×10 = 2000 cm.

but our question tells us that the turtle won by 10 cm.

so, the race was over a little bit before these 200 seconds (for a tie).

this means, the rabbit could not run the last 10 cm for the tie (because the race was over and the turtle had won).

the rabbit would have needed 10/100 seconds for these 10 cm.

as speed = distance/time

we need to divide distance by speed

distance/1 / distance/time

to get time.

so,

10cm/1 / 100cm/s = 10s/100 = 1/10 s

so, we need to deduct this 1/10 s from the 200 seconds of the turtle (and also from the 20 seconds for the rabbit).

the race lasted of course the whole time the turtle was running (while the rabbit was resting, officially still participating in the race with speed 0 for 3 minutes).

and so, the race was 199.9 s long.

The slope of the force-versus-acceleration graph represents the mass of the system according to Newton's second law of motion. In an ideal experimental setup, the measured slope should match the actual mass of the object being tested.

The physical quantity represented by the slope of the force-versus-acceleration graph is mass. According to Newton's second law of motion, force is equal to mass multiplied by acceleration (F = ma). Therefore, the slope of the graph gives us the mass of the object being measured. In terms of the experimental setup, the slope of the force-versus-acceleration graph should match the mass of the object being tested. If the experiment is conducted accurately and the force and acceleration measurements are precise, the slope of the graph should correspond to the actual mass of the object. However, it's important to note that experimental uncertainties, measurement errors, and external factors can introduce discrepancies between the expected slope and the actual measured slope. Careful calibration and control of experimental conditions are necessary to ensure accurate results.

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