The force between two charges is 2 newtons. The distance between the charges is 2 × 10^-4 m. If one of the charges is 3 × 10^-6 C, what is the strength of the other charge?

Answer:

3.5+35

1.5+1.2

20+22

42 + 16

= 58 ¹²

Answer:

C

Explanation:

A. radio signal. Radio waves have a longer wavelength and travel at the speed of light, the same as visible light. However, they have a lower frequency and can penetrate cosmic dust more easily.

both would reach Earth at the same time. Both visible light and radio signals travel at the speed of light, which is the fastest speed possible in the universe. Therefore, if emitted simultaneously from Alpha Centauri, both signals would cover the vast distance and reach Earth at the same time. The speed of light is constant regardless of the wavelength or frequency of the electromagnetic wave. Hence, there would be no significant time difference between the arrival of the radio signal and the visible light signal from Alpha Centauri.

learn more about frequency here:

https://brainly.com/question/31938473

#SPJ11

The surface temperature of the incandescent bulb after being strategically placed in front of an air conditioner is about 133°C.

The surface temperature of the incandescent bulb with certain specifications and features is calculated. The bulb has a tungsten filament that converts 20% of the energy it receives into light, and the remaining energy into heat. To reduce the temperature of the light globe, it is placed strategically in front of an air conditioner that blows air at a temperature of 30°C and a velocity of 2.5m/s.

The surrounding surfaces in the vicinity are stable at 30°C. The emissivity of the bulb is 0.92, and the diameter of the bulb is 100mm. The equation for the equilibrium/steady-state surface temperature of the bulb is also solved.

To determine the equilibrium/steady-state surface temperature of the bulb, the radiative heat transfer from the surface of the bulb to the surrounding environment and the convective heat transfer between the surface of the bulb and the surrounding air are taken into account.

Thus, the equation for the equilibrium/steady-state surface temperature of the bulb is as follows:\(εσA(T⁴s-T⁴∞) + hA(Ts-T∞) = 0\)

Where,ε is the emissivity of the bulb, σ is the Stefan-Boltzmann constant, h is the heat transfer coefficient, A is the surface area of the bulb, Ts is the surface temperature of the bulb, and T∞ is the temperature of the surrounding environment.

A quartic equation solver is used to solve the above equation to determine the value of Ts. Let's assume an initial surface temperature estimate of the bulb to be 100°C.

Then, we get the following quartic equation:

0.92*5.67e-8*π*(0.1/2)²(Ts⁴-303⁴) + 10.45*(π*0.1²)*(Ts-303) = 0

After solving the above quartic equation using an online quartic equation solver, we get the value of the surface temperature of the bulb to be approximately 133°C (rounded to the nearest integer).

Therefore, the surface temperature of the incandescent bulb after being strategically placed in front of an air conditioner is about 133°C.

To know more about temperature visit-

https://brainly.com/question/7510619

#SPJ11

The electric potential energy decreases and the electron's speed at f is greater than its speed at i.

The electric potential energy of a charged particle is given by the equation U = qV, where U is the potential energy, q is the charge of the particle, and V is the electric potential. In this case, as the electron moves along the trajectory from i to f, the electric potential decreases. This means that the electric potential energy of the electron decreases as well.

To further explain, electric potential is a measure of the electric potential energy per unit charge at a given point in space. When the electric potential decreases, it means that the amount of electric potential energy per unit charge is decreasing. As a result, the electric potential energy of the electron decreases as it moves along the trajectory.

Regarding the speed of the electron, we can apply the conservation of mechanical energy. As the electric potential energy decreases, the total mechanical energy of the electron remains constant. The total mechanical energy is the sum of the kinetic energy and the potential energy. Since the potential energy decreases, the kinetic energy must increase to maintain the constant total mechanical energy.

This increase in kinetic energy corresponds to an increase in the electron's speed at f compared to its speed at i. Therefore, the electron's speed at f is greater than its speed at i.

Learn more about electric potential energy

brainly.com/question/16890427

#SPJ11

Answer:

Explanation:

The magnitude of the current can be found by using the formula

\(i = \frac{v}{r} \\ \)

v is the voltage

r is the resistance

From the question we have

\(i = \frac{40}{5} = 8 \\ \)

We have the final answer as

Hope this helps you

Answer:

8 A

Explanation:

We know that

V = IR

40 = I(5)

40/5 = I

8 = I

The power required to move the automobile to the top of the hill is 130,666.67 watts or 175.41 horsepower.

The power required to move an object can be calculated using the formula: power = work / time.

First, let's calculate the work done in lifting the automobile to the top of the hill. The work done against gravity is given by the formula: work = force × distance.

The force required to lift the automobile is equal to its weight. The weight of an object is given by the formula: weight = mass × acceleration due to gravity.

Substituting the given values, we have: weight = 2,000 kg × 9.8 m/s^2 (acceleration due to gravity) = 19,600 N.

The distance the automobile is lifted is 100 meters.

Therefore, the work done against gravity is: work = 19,600 N × 100 m = 1,960,000 J (joules).

The time taken to reach the top of the hill is given as 15.0 seconds.

Now, we can calculate the power using the formula: power = work / time.

power = 1,960,000 J / 15.0 s = 130,666.67 W (watts).

To convert watts to horsepower, divide the power in watts by 746 (1 horsepower = 746 watts).

power in horsepower = 130,666.67 W / 746 = 175.41 hp (horsepower).

Rounding to two decimal places, the power required to move the automobile to the top of the hill is approximately 130,666.67 watts or 175.41 horsepower.

For more such questions on power, click on:

https://brainly.com/question/1634438

#SPJ8

The  to problem of calculating the power required to move a 2,000-kilogram automobile to the top of a 100-meter hill in 15.0 seconds is given

Given, Mass of the automobile, m = 2000 knight of the hill, h = 100 time, t = 15.0 the gravitational potential energy of the automobile when at the bottom of the hill is equal to the work done in lifting it up the hill

.W = mgh= (2000 kg) (9.81 m/s²)

(100 m)= 1,962,000 J

Power is defined as the rate at which work is done, or the work per unit time. Therefore,

Power = Work / Time= 1,962,000 J / 15.0 s

= 130,800 WIn horsepower, Power = (130,800 W) / (746 W/hp)

= 175.3 hp

Therefore, the required power to move a 2,000-kilogram automobile to the top of a 100-meter hill in 15.0 seconds is 130,800 W or 175.3 hp.

To know more about power visit:

https://brainly.com/question/31322548

#SPJ11

Answer:

vjad zdmenrmdnbeanssshsnaaamrnrnealatkujejdshdendddddjnyejeynarnDhdndndddnN\nnddzNHNdnnkddkddzmdddhmeeenNDN

Answer:....

Explanation:.....

Ionic compounds give and receive electrons so that they have eight valence electrons in their outermost shell and form a stable electron configuration. They are usually formed between metals and non-metals and have high melting and boiling points due to strong electrostatic forces between oppositely charged ions.

Ionic compounds form a crystalline lattice structure. The ionic compound can have a total of 8 valence electrons in its outer shell to achieve a stable electron configuration. Ionic compounds usually exist as solids in their natural state and have high melting points. Sodium Chloride (NaCl) is an example of an ionic compound. They typically dissolve in polar solvents, and their properties are mainly determined by the ratio of the positively and negatively charged ions in the crystal structure. Most ionic compounds are soluble in water and can conduct electricity when melted or dissolved in a polar solvent. Hence, Ionic compounds give and receive electrons, so their compound can have a total of 8 valence electrons altogether.  

Learn more about Ionic compounds here ;

https://brainly.com/question/30420333

#SPJ11

In a system with two moving objects, when a collision occurs between the objects, the correct answer is: B) The total momentum is always conserved.

Since no outside force acts on an isolated system (like the universe), momentum is always conserved. All of momentum's components will always be constant because momentum can never change. The conservation of momentum principle should be applied to tackle collision-related issues.

A body or system of bodies in motion preserves its total momentum, which is determined as the sum of its mass and vector velocity, in the absence of an external force, according to the theory of conservation of linear momentum. Momentum is constantly maintained since there are no external forces in an isolated system (like the universe).

To know more about total momentum click here:

https://brainly.com/question/17166755

#SPJ11

The law of conservation of momentum states that the momentum of a system is equal and conserved before and after collision. Therefore, the final momentum of the system is 513 kgm/s.

The law of conservation of momentum states that, for two or more bodies which are present in an isolated system that are acting upon each other, their total momentum remains constant in the system unless an external force is applied on them. The expression for conservation of momentum is:

m₁ u₁ + m₂u₂ = m₁v₁ + m₂v₂

where, m₁ = mass of one object,

m₂ = mass of another object,

u₁ and u₂ are the initial velocities of objects,

v₁ and v₂ are the final velocities of objects.

Here, m₁ = 95kg, m₂ = 120kg

u₁ = 5.4m/s, u₂ = 0m/s (at rest)

m₁ u₁ + m₂u₂ = m₁v₁ + m₂v₂

95 × 5.4 + 120 × 0 = 95 × v₁ + 120 × v₂

513 + 0 = 95 × v₁ + 120 × v₂

Momentum before collision = Momentum after collision

Therefore, the momentum after collision is 513 kgm/s.

Learn more about Momentum here:

https://brainly.com/question/24030570

#SPJ1

The question is fishing for "balanced force".

But the description in the question is terrible.

The horizontal component of velocity is

(22 m/s) • cosine(62°).

The vertical component of velocity is

(22 m/s) • sine(62°).

These are the original components, right after the kick. As time goes on, the horizontal one doesn't change. But the vertical one gets bigger and bigger, because gravity is accelerating the ball downward.

That's the complete story of projectile motion.

Answer:

Explanation:

Given:

m₁ = 500 kg

v₁ = 64 km/h

m₂ = 250 kg

v₂ = 128 km/h

m₃ = 1000 kg

v₃ = 32 km/h

_____________

p max - ?

Nomtice, that:

m₂ = 250 kg;

m₁ = 500 kg =  2·m₂;

m₃ = 1 000 kg =  4·m₂

v₂ = 128 km/h;

v₁ = 64 km/h = v₂ / 2;

v₃ = 32 km/h = v₂ / 4;

Impulses

p₁ = m₁·v₁ = 2·m₂ · (v₂/2) = m₂·v₂

p₂ = m₂v₂

p₃ = m₃v₃ = 4m₂·(v₂/4) = m₂v₂

p₁ = p₂ = p₃

The impulses are the same!

Answer:

R = -2500N

Explanation:

Use formula ΣF = Ma. We can split the Net Force into two parts: Fe - Ff  =  Ma.

Fe is the force developed by the engine: 4000N

Ff (R) is the air resistance projected on the vehicle. This is the value we're looking for.

Mass: 1000kg

Acceleration: 1.5m/s^2

Next, just plug in the values and solve.

▪4000N - Ff  =  (1000kg)(1.5m/s^2)

▪Ff = 1500N - 4000N

▪Ff = -2500N

R = -2500N.

The air resistance acting on the car is R = -2500N.

Answer:

20 m/s

Explanation:

Average Speed will equal to total distance over total time. We are given our total distance equal to 180 meters and total time as 9 seconds.

Apply the formula of speed:

\(\displaystyle{v=\dfrac{s}{t}}\)

where v is average speed, s is total distance and t is total time. Therefore:

\(\displaystyle{v=\dfrac{180}{9}}\\\\\displaystyle{v=20 \ \, \sf{m/s}}\)

Hence, the average speed for a soccer ball is 20 m/s.

The work done required to pump all of the water (a) over the side is 6.8094 × 10⁶ J and (b) out of an outlet 2 m over the side is 11.349 × 10⁶ J.

The total amount of work done required to pump all of the water in a circular swimming pool with a diameter of 14 m whose circular side is 3 m high, and the depth of the water is 1.5 m can be calculated as follows:

(a) Pump all of the water over the side:

We have been given that the circular swimming pool has a diameter of 14 m. The depth of the water is 1.5 m. So the radius of the pool can be calculated as:

r = d/2 = 14/2 = 7 m

The volume of the water that needs to be pumped out of the pool is given by the formula:

Volume of water = πr²h

Where h is the depth of the water.

V = πr²h= 22/7 × 7 × 7 × 1.5= 231 m³

The mass of water that needs to be pumped out of the pool can be calculated as follows:

Mass of water = Volume of water × Density of water = 231 × 1000= 231000g

The gravitational force on the water can be calculated as follows:

Gravitational force on water = Mass of water × Acceleration due to gravity = 231000 × 9.8= 2269800 N

Work done in pumping all the water over the side can be calculated as follows:

Work done = Gravitational force on water × Height from the surface to the top of the pool= 2269800 × 3= 6.8094 × 10⁶ J

(b) Pump all of the water out of an outlet 2 m over the side:

Work done in pumping all the water out of an outlet 2 m over the side can be calculated as follows:

Work done = Gravitational force on water × Height of outlet from the surface= 2269800 × 2= 4.5396 × 10⁶ J

Therefore, the total amount of work (in joules) required to pump all of the water over the side and pump all of the water out of an outlet 2 m over the side of the pool is 6.8094 × 10⁶ + 4.5396 × 10⁶ = 11.349 × 10⁶ J.

Learn more about Work done:

https://brainly.com/question/28356414

#SPJ11

Answer:

33.33j+6.67i km/hr

Explanation:

From the law of conservation of momentum,

Applying,

mu+m'u' = V(m+m')............... Equation 1

Where m = mass of the truck, m' = mass of the car, u = initial velocity of the truck, u' = initial velocity of the car, V = Final velocity.

Note: let j represent the north, and i  represent the east

From the question,

Given: m = 1500 kg, u = 60j, m' = 1200 kg, u' = 15i

Substitute these values into equation 1

1500*60j+1200*15i = V(1500+1200)

90000j+18000i = 2700V

V = (90000j+18000i)/2700

V = 33.33j+6.67i km/hr

Global Conveyor Belt is constantly moving system of deep-ocean circulation driven by temperature and salinity; moves water around the Earth.

The deep-ocean circulation system known as the "global ocean conveyor belt" is constantly moving, driven by temperature and salinity. The deep-ocean circulation system known as the "global ocean conveyor belt" is constantly moving, driven by temperature and salinity. Water is transported around the world by the huge ocean conveyor. The ocean is not an expanse of still water. The ocean is like a giant conveyor belt that is constantly in motion. The "global conveyor belt" is a system of currents that is driven by the hermohaline circulation. In the North Atlantic, close to the pole, the conveyor belt starts at the water's surface. In this location, arctic temperatures chill the water.

To know more about salinity, visit: https://brainly.com/question/14575146

#SPJ4

Global Conveyor Belt is constantly moving system of deep-ocean circulation driven by temperature and salinity; moves water around the Earth.

The Global Conveyor Belt is a major driving force behind many of the world's oceanic currents. It is a continuous circulation of deep ocean water, driven by temperature and salinity differences between different parts of the ocean. The Global Conveyor Belt begins in the northern Atlantic Ocean, where a combination of factors create a strong surface current. This current carries warm, salty water from the Gulf of Mexico and the Caribbean Sea northward, where it cools and sinks to form a deep current that flows back towards the equator. This deep current is then joined by a cold, low-salinity current from the Antarctic region, creatig na continuous circulation of deep ocean waters around the globe.

To know more about salinity, visit:
brainly.com/question/14575146

#SPJ4

"Red, Yellow, Blue"  is an example of a triad color scheme on the color wheel.

Your question is: Which of the following is an example of a triad color scheme on the color wheel?

A triad color scheme on the color wheel consists of three colors that are evenly spaced from each other.

The correct answer is a). Red, Yellow, Blue.

A triad color scheme is a combination of three colors that are evenly spaced around the color wheel. In this case, red, yellow, and blue form an equilateral triangle on the color wheel, making them a triad color scheme.

Learn more about triad color scheme at https://brainly.com/question/31264984

#SPJ11

The removal of anxiety-provoking ideas from awareness is called "c. repression".

It is a defense mechanism in which individuals unconsciously push unwanted thoughts or feelings out of their consciousness and into their subconscious mind.

This process is done to protect oneself from experiencing uncomfortable or painful emotions.

Repression is often used as a coping mechanism, especially in situations where individuals feel overwhelmed by emotions that they cannot handle.

It is important to note that repression is not a healthy long-term solution, as it can lead to psychological issues in the future.

Therapy can be beneficial in helping individuals confront and process their repressed emotions and ideas in a safe and healthy environment.

In conclusion, the answer to the question is c. Repression.

Learn more about awareness at: https://brainly.com/question/14471849

#SPJ11

Answer:

In an ideal pulley system is assumed as a perfect system, and the efficiency of the pulley system is taken as 100% such that there are no losses of the energy input to the system through the system's component

However, in a real pulley system, there are several means through which energy is lost from the system through friction, which is converted into heat, sound, as well as other forms of energy

Given that the mechanical advantage = Force output/(Force input), and that the input force is known, the energy loss comes from the output force which is then reduced, and therefore, the Actual Mechanical Advantage (AMA) is less than the Ideal Mechanical Advantage of an "ideal" pulley system

The relationship between the actual and ideal mechanical advantage is given by the efficiency of the pulley system as follows;

\(Efficiency \, \% = \dfrac{AMA}{IMA} \times 100\)

Explanation:

Answer:

Option C is the correct statement.

Explanation:

Both coal-fired power plants and solar thermal power plants use a heat source to create steam, which then drives a turbine to generate electricity. In a coal-fired power plant, the heat is generated by burning coal to produce steam. In a solar thermal power plant, mirrors or lenses are used to concentrate sunlight onto a fluid, which is then heated to produce steam.

Option A is incorrect because coal is a non-renewable resource, while solar thermal power plants utilize renewable solar energy. Option B is incorrect because the conversion efficiency of coal-fired power plants is typically much lower than that of solar thermal power plants. Option D is partially correct, as coal-fired power plants are a major source of greenhouse gas emissions, while solar thermal power plants do not emit greenhouse gases during operation.

Answer:

No, the metal sphere becomes positively charged because electrons are transferred from the sphere to the rod.

Answer:

1. where the skater turns and goes back in the opposite direction- point w

2. gravitational force of the object

3. point a

4. the bar representing sphere 4 should be twice as tall as the bar representing sphere 2

5. B; its mass is smaller (?)

yolo

Answer:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Explanation:

The Weight of an object is more at pole and less at equator of the earth because the distance of the pole is less than the distance of the equator from the centre of the earth.

Answer:

An increase in the mass on the string will cause an increase in the period.

Explanation:

We'll begin by writing an expression showing the relationship between the period and mass. This is shown below:

T = 2π√(m/K)

Where:

T is the period of oscillation.

m is the mass of the object.

K is the spring constant.

T = 2π√(m/K)

From the above formula:

The period (T) is directly proportional to the square root of mass (m) and inversely proportional to the square root of the spring constant (K). This implies that an increase in the mass of the object on the spring will result in an increase in the period of oscillation and a decrease in the mass of the object will also decrease the period of oscillation.