What is the electrical force of two punctiform electrical charges of 3ųC and 4ųC respectively at a distance of 10 cm in a vacuum

When two equal forces act on an object in opposite directions, they are known as balanced forces.

The balanced force is a system of forces that acts on an object without causing any change in motion. Balanced forces are those that do not change an object's speed or direction. If the forces acting on an object are balanced, the net force will be zero. When the net force is zero, the object is stationary or moving with a constant velocity.

Unbalanced forces are those that produce a change in an object's motion. Unbalanced forces are those that cause an object to speed up, slow down, or change direction. An object will only move if the net force acting on it is non-zero.

Two or more forces that are equal in size but opposite in direction are known as equivalent forces. When two or more equivalent forces are acting on an object, they cancel each other out, and the net force is zero.

Parallel forces are forces acting on an object in the same direction. When two or more parallel forces are acting on an object, they combine to form a resultant force that is equal to the sum of the individual forces. The direction of the resultant force is the same as that of the individual forces.

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The current flowing through the heating coil when the heater is plugged in is 150 A.

Current is the flow of electricity or charge through a conductor. It is measured by the rate of flow of electric charge, typically in amperes. It is important to differentiate between current and voltage, as they are often confused when discussing electricity. Current is the rate of flow of electrical charge, while voltage is the pressure that pushes the electric charge. Current can be either alternating (AC) or direct (DC) depending on the type of circuit.

The power (P) of the heater is 1500 W and the voltage is 120 V, so the resistance can be calculated using the equation P = V2/R. Thus, R = V2/P = (120)2/1500 = 0.8 Ω.
Now that we know the resistance, we can calculate the current using Ohm's Law, I = V/R = 120/0.8 = 150 A.
Therefore, the current flowing through the heating coil when the heater is plugged in is 150 A.

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Answer: c

Explanation:

The way to check which one is the correct one is to simply multiply and see if there are the same number of atoms in both sides for each element.

a. 2×2 atoms of Al ≠ 3×1 atoms of Al

2×3 atoms of O = 3×2 atoms of O

BOTH MUST BE EQUAL FOR IT TO BE ADJUSTED!!!!!

b. 3×2 atoms of Al ≠ 3×1 atoms of Al

3×3 atoms of O ≠ 2×2 atoms of O

c. 2×2 atoms of Al = 4×1 atoms of Al

2×3 atoms of O = 3×2 atoms of O

BOTH ARE EQUAL, CORRECT ANSWER!!!

d. 2×2 atoms of Al ≠ 1×1 atoms of Al

2×3 atoms of O = 3×2 atoms of O

The new orbital speed is 10024 m/s after -7.5×\(10^9\) J work by atmosphere, using conservation of energy.

Erosion from the World's upper air makes the satellite lose motor energy, bringing about a lessening in its speed. The work done by the air is given as - 7.5 x\(10^9\) J. We can utilize the standard of protection of energy to decide the new orbital speed of the satellite.The underlying motor energy of the satellite is given by:

KEi = \((1/2)mv^2\)

Where m is the mass of the satellite and v is the underlying orbital speed.

KEi =\((1/2)(798 kg)(8840 m/s)^2\)= 3.493 x \(10^_{10}\)J

The last dynamic energy of the satellite is given by:

KEf = KEi - work done by environment

KEf = 3.493 x \(10^_{10\) J - (- 7.5 x \(10^9\) J) = 4.243 x\(10^_{10\)J

The last orbital speed of the satellite can not entirely settled from its new dynamic energy:

KEf = (1/2)\(mv^2\)

v = sqrt((2KEf)/m) = sqrt((2)(4.243 x \(10^_{10\) J)/(798 kg)) = 10024 m/s

In this way, the new orbital speed of the satellite is 10024 m/s after the contact from the World's upper environment has done - 7.5×\(10^9\) J of work on the satellite.

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Answer:

8.85m/s

Explanation:

The potential energy the watermelon held before dropping is Ep=mgh=2*9.8*4=78.4J.

When it strikes the ground, all of its Ep will transfer into Ek, so 1/2*m*v^2=78.4.

We already knew that m=2, so insert that in, we will get the V^2=78.4 m/s, V=8.85 m/s

Light wave when it goes from something less density material  to more density material it bends away from normal.

A solid substance's density is defined as its mass in relation to its volume. Density is defined by the equation d = M/V, where M and V stand for mass and volume, respectively. Grams per cubic centimeter is the unit of measurement for density. For instance, compared to Earth's density of 5.51 grams per cubic centimeter, water has a density of 1 grams. Another method to measure density is kilograms per cubic meter (in meter-kilogram-second or SI units)

It is straightforward to compute the relationship between mass and volume when you know the density. For instance, the formula for determining a body's mass is M = Vd, whereas the formula for determining a body's volume is V = M/d.

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Answer:

The car manufacturers could increase bore of the cylinders, place the engine in the center or back of the car, add 1 to 2 turbochargers, and lower the center of gravity of the vehicle to increase traction.

Explanation:

Turbochargers would be recommended because they significantly increase both the torque of the engine as well as the amount of horses powering the car while also increasing original efficiency both with and without the additional power. Weight adjustment allows for lightweight vehicles with good traction. This is important to both keep control of the car under acceleration, but it also makes the vehicle more efficient due to the now sheddable unnecessary weight. A more obvious approach would be to increase the base horsepower and torque of the engine by increasing the bore of the cylinders and the weight of the pistons. This acts as an inertial lever, because the extra piston weight will drag the crankshaft faster. This could also be achieved by taking away piston weight, but this could be catastrophic should a piston slip.

The man exerts a force of approximately 31.875 Newtons on the box. To find the force exerted by the man on the box, we can use Newton's second law of motion.

To find the force exerted by the man on the box, we can use Newton's second law of motion, which states that the net force (F) acting on an object is equal to its mass (m) multiplied by its acceleration (a).

Given:

Mass of the box (m) = 51.0 kg

Displacement (d) = 2.50 m

Time (t) = 2.00 s

We can first calculate the acceleration of the box using the formula:

a = (2 * d) / (t^2)

a = (2 * 2.50 m) / (2.00 s)^2

a = 2.50 m / 4.00 s^2

a = 0.625 m/s^2

Now we can calculate the force exerted by the man using Newton's second law:

F = m * a

F = 51.0 kg * 0.625 m/s^2

F = 31.875 N

Therefore, the man exerts a force of approximately 31.875 Newtons on the box.

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Answer:

The answer to the question is highlighted in the box

The highest frequency sine wave that an oscilloscope with a rise time of 8 ns can display is 44.7 MHz.

The rise time of an oscilloscope is the time taken for the voltage on the screen to rise from 10% to 90% of the maximum amplitude. It is an indication of how fast the oscilloscope can respond to changes in input signal. The relationship between rise time and the highest frequency sine wave that the oscilloscope can display is given by:
Rise time (tr) = 0.35/frequency (f)
Rearranging the equation to solve for frequency gives:
Frequency (f) = 0.35/tr
Substituting the given rise time of 8 ns gives:
Frequency (f) = 0.35/8 ns = 44.7 MHz
Therefore, the highest frequency sine wave that an oscilloscope with a rise time of 8 ns can display is 44.7 MHz.

The rise time of an oscilloscope determines the highest frequency sine wave that it can display. The relationship between rise time and frequency is given by tr = 0.35/f. Substituting the given rise time of 8 ns gives a frequency of 44.7 MHz.

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Answer:

Explanation:

Electric generators work on the principle of electromagnetic induction. A conductor coil (a copper coil tightly wound onto a metal core) is rotated rapidly between the poles of a horseshoe type magnet. The magnetic field will interfere with the electrons in the conductor to induce a flow of electric current inside it.

Answer:

Sedimentary rocks are deposited in layers as strata, forming a structure called bedding. Sedimentary rocks are often deposited in large structures called sedimentary basins.

Explanation:

Answer: Strata

Explanation: Strata are layers of rock, or sometimes soil. In nature, strata come in many layers. It is a term in sedimentary and historical geology; the singular is stratum. The study of strata is called stratigraphy.

the wavelength of the electromagnetic radiation is\(2.99792458 × 10^-6\)cm.We have the frequency of electromagnetic radiation signal.

We are required to determine the wavelength of this signal in cm.Hertz (Hz) is the unit of frequency. The formula for finding the wavelength of electromagnetic radiation is given by;

wavelength (λ) = speed of light (c) / frequency (f)

Where\(c = 2.99792458 × 10^8 m/sλ\)

= c / f

Given, \(f = 1.00 × 10¹² Hz\)

We have to convert the speed of light to cm/s

Speed of light =\(2.99792458 × 10^8 m/scm\)

\(= 10^-2\) m (conversion factor)

Speed of light\(= 2.99792458 × 10^8 × 10^-2 cm/s\)

\(= 2.99792458 × 10^6 cm/s\)

Now, substitute the values in the formula

λ = c / fλ

\(= (2.99792458 × 10^6 cm/s) / (1.00 × 10¹² Hz)λ\)

\(= 2.99792458 × 10^-6 cm\)

Therefore, the wavelength of the electromagnetic radiation is\(2.99792458 × 10^-6\) cm.

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Answer: The motion of a body with constant speed in a circular path is said to be accelerated, because it is moving with uniform speed, but not with uniform velocity, as velocity is a vector quantity, it can be represented in magnitude as well the direction.

Explanation:

The reference point at which vehicle appear to intersect the curb is 2.22km.

To ensure that every parallel park is successfully completed, it is crucial to employ a structured technique and to practice it until a level of proficiency is attained. However, contrary to popular belief, it need not be completed in a single seamless maneuver.

During the maneuver, it is acceptable to advance and make adjustments as long as you do so safely and keep an eye on your surroundings at all times.

Utilizing reference points, a structured technique is applied. Whatever method is used to parallel park, using reference points will help new drivers complete this maneuver.

You should slightly pass the car you plan to park behind. The front of this car is aligned with the center of your passenger-side front window in reference point.

\(Reference=\frac{\pi }{\sqrt{2} }\)

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Magnetism is a mysterious force in this universe. Scientists don't fully understand why it occurs in the first place. They aren't sure why these particles have a north and south direction either, according to Live Science, and there are many different forms of magnetism.

Anything that creates a magnetic field is considered to be a magnet. The most notable characteristic of a magnet is a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc., and attracts or repels other magnets. This invisible magnetic field is responsible for this property.

A substance or object that generates a magnetic field that has the potential to impact objects nearby. Magnetic materials, such as iron, are drawn to a magnet. A magnetic field is always present in permanent magnets. One of a magnet's two poles is its centre of the magnetic field.

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Based on what I know about ethics, I don't believe the use of animals in experiments for testing is appropriate.

Since animals can feel pain and suffering, using them in studies creates ethical questions. Some contend that the advantages of using animals for research do not outweigh the harm done to the animals. Concerns exist over the efficacy of animal models as well as the applicability of results to people.

The appropriateness of animal testing in psychology research is a complicated matter that calls for comprehensive analysis of the advantages and disadvantages as well as any prospective substitute techniques. While attempting to advance our understanding of human psychology, researchers should emphasize the welfare of animals used in experiments and strive to reduce their suffering as much as possible.

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The rate at which the radius increases when the radius is 6 cm is approximately 0.056 cm/s.

To determine how fast the radius increases, we can use the given information about the volume of a cylinder and its rate of change. The volume of a cylinder is given by the formula v = πR²H, where R represents the radius and H represents the height.

Given that the radius is three times the height, we can express the height as H = R/3. Substituting this value into the volume equation, we have v = πR²(R/3). Simplifying further, the volume equation becomes v = (π/3)R³.

Now, we are given that the volume increases at a rate of 10 cm/s. By taking the derivative of the volume equation with respect to time, we can determine how the radius changes over time. The derivative, dv/dt, is equal to (π/3)(3R²)(dR/dt), where dR/dt represents the rate of change of the radius.

Simplifying the equation, we have dv/dt = πR²(dR/dt). Substituting the given values, we have 10 cm/s = π(6²)(dR/dt).

Solving for dR/dt, we find that the rate at which the radius increases when the radius is 6 cm is approximately 0.056 cm/s.

Calculus and related concepts to explore the relationships between variables and their rates of change. Understanding these mathematical principles is essential for analyzing dynamic systems and their behaviors.

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Answer:An object having balanced forces definitely cannot be accelerating.

D. Potential energy - thermal energy. The two major forms are Kinetic Energy and Potential Energy. Kinetic energy is the energy in moving objects or mass.

A portion of the kinetic energy from the club's swing is transferred to the stationary golf ball as the club makes "contact" with it.This type of energy transfer involves the transfer of energy from one item to another while maintaining its original shape.

Let's use illustration:Consider a table with a book on it.The book has potential energy when it is open.However, because the book is in motion when you unintentionally knock it from the table, that potential energy will change into kinetic energy as it falls.

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Answer: it's potential energy and kinetic

Explanation:

I know because I got it wrong think it was potential energy and thermal energy the person down or up there got it wrong don't choose it

Answer:

250 m/s      (VERY fast !)

Explanation:

30 km = 30 000 m

30 000 m / 120 s = 250 m/s

The amount of energy used to power a 1000 W microwave for 4 minutes is 240,000 J.

To calculate this, we need to use the formula: energy = power x time. The power of the microwave is given as 1000 W and the time for which it is used is 4 minutes.

Converting the time to seconds, we get 4 minutes x 60 seconds/minute = 240 seconds.

Plugging in the values, we get: energy = 1000 W x 240 seconds = 240,000 J.

In order to function for 4 minutes, the microwave needs to use 240,000 joules of energy. To put this into perspective, one joule of energy is equal to the force needed to lift a 100-gram item one metre in height. Consequently, 240,000 joules of energy are equal to raising a 100-gram item 2,400 metres in height.

A 1000 W microwave may appear to use a lot of energy, but it's vital to remember that energy use is an essential component of how modern society works. To maintain the long-term viability of our energy supplies, it is crucial to strike a balance between our energy needs and sustainable and environmentally responsible practices. This may involve utilising energy-saving.

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Answer:

8.803 s

(but this is only if it's a free fall, which we assume since we didn't get the mass of the hulk)

Since the resistors are in series, the equivalent resistance is the sum of the resistances:

Now, to find the current, let's divide the voltage by the total resistance:

The current through each resistor is the same because they are in series: 1.5 A.

To find the most powerful resistor, let's analyze the formula for the power in a resistor:

We can see that the greater the resistance, the greater the power, therefore the most powerful resistor is the 30 ohms resistor.

Answer:which of these elements does not bond to form molecules: oxygen, chlorine, neon, or sulfur? neon because it is a noble gas and does not want to share electrons with other atoms.

Explanation:

Answer:

= 24.76m

= 2476 cm

Explanation:

18 meters from point of origin = 18m north 90 degrees?

17 meters from point of origin = 17m west 0 degrees?

                                                                                                        _

If these routes are one after the other then we get a triangle  |

18 side and 17 side

This means we need to do Pythagoras Theorem.

18^2 + 17^2 = c^2

sqrt 324 + sqrt 289 =  c^2

c^2 = sqrt 613 = 24.7588368

= 24.76m

Answer:

Elastic potential energy  E = 0.5 J

Explanation:

Let us assume we have to find the elastic potential energy stored in the spring.

Given: k = 100

change in the length of the spring x = 0.2-0.1 = 0.1 m

Elastic potential energy

E = \(\frac{1}{2} kx^2\)

plugging the values we get

\(E = 0.5\times100\times0.1^2\\=0.5 J\)

Hence, Elastic potential energy  E = 0.5 J

Amy pulls a spring with a spring constant k = 100 N/m, stretching it from its rest length of 0.10 m to 0.20 m.

What is the elastic potential energy stored in the spring?

Answer: 0.5 J

Current can be calculated since power and potential difference are given. The current for the 200 W bulb with a power supply of 110 V will be 1.81 A.

Given- Power of the bulb= 200 W

           Potential difference of the bulb= 110 V

In order to calculate current, we need to apply the formula,

                                             P= I x V

Putting values in the above formula, we get-

                                          200= I x 110

                                               I = 200/110

                                               I=1.81 A

The calculated current is 1.81 A.

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Answer:pls give me brainliest

Explanation: