A source charge generates an electric field of 4286 N/C at a distance of 2. 5 m. What is the magnitude of the source charge? (Use k=) 1. 2 µC 3. 0 µC 1. 2 C 3. 0 C.

Answer:

The heating element of the heater is made up of alloy which has very high resistance so when current flows through the heating element, it becomes too hot and glows red. But the resistance of cord which is usually of copper or aluminum is very low so it does not glow.

The object in the image is called an electromagnet

The strength of the magnetic field can be increased by increasing the number of turns.

An electromagnet is a type of magnet that is created by the flow of electric current through a coil of wire. Unlike a permanent magnet, which produces a magnetic field at all times, an electromagnet's magnetic field is created and maintained by the flow of current.

The strength of the magnetic field produced by an electromagnet depends on several factors, including the number of turns in the coil, the current flowing through the wire, and the material of the core (if one is used).

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Answer: 705.6

Explanation: You would do 2(588)(882) divided by (588 + 882) *Put this in a fraction by the way* and you should get your answer

Answer:

V = ω A sin ω t       can be used to describe SHM

When sin ω t = 1 (the maximum value possible)

V = ω A          at equilibrium sin ω t = 1

Answer:

electromagnetic radiation hopefully

Answer:

metal conducts heat faster than wood. which means the metal conducted heat away from your hand (or whatever it is) faster than wood.

Explanation:

just because they feel warm/cold doesn't always mean that it is warm/cold. if they both were sitting at room temp for a long time, then both will eventually reach the temp of the room. even though they are the same temp the metal will feel colder than the wood because of the thermal conductivity of the metal compared to the wood.

The different thermal conductivities of metal and plastic are important in the design of the bowl is metal conducts heat faster than Plastic. which means the metal conducted heat away from your hand (or whatever it is) faster than Plastic.

Thermal conductivity can be defined as the degree to which heat is transmitted through the cross-section of the unit of an object, where the temperature exits directly across the surface.

Electrical conductivity is a measure of how much energy (moving charge) can pass through objects under the influence of a used electric field. Thermal conductivity measures how heat (heat moving energy) can pass through objects below temperature differences.

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Answer:

16.44 N

Explanation:

From the diagram attached,

we make use of cosine rule to calculate the resultant force

R² = P²+Q²-2PQcosα............................. Equation 1

Where R = resultant force

Given: P = 7 Newton, Q = 10 Newton, α = (180-30) = 150°

Substitute these values into equation 1

R² = 7²+10²-(2×7×10×cos150°)

R² = 49+100-140cos150°

R² = 149-140cos150°

R² = 149-140(-0.8660)

R² = 149+121.24

R² = 270.24

R = √(270.24)

R = 16.44 N

Answer:

heat

Explanation:

Answer:

B 4.18J\g degree C is the specific heat of water

From the analysis, it can be concluded that planet A has the strongest gravitational field, followed by planet C, and planets B and D have the same gravitational field strength.

The gravitational force acting on various masses is measured on different planets. The table shows the measured values for the forces acting on the corresponding masses:Planet Force (N) Mass (kg)A 8.0 0.50B 30 3.0C 45 3.0D 60 6.0

Method for comparing the gravitational field strengths on the different planets:First, we can use the formula for calculating gravitational force: \(`F = G (m_1m_2 / r^2)`\)where G is the universal gravitational constant `\(6.67 * 10^{-11 }Nm^2/kg^2\), m1 and m2 are the masses of the two objects in kg, and r is the distance between the centers of the objects in meters.

We know that the force is proportional to mass (F = ma). So we can calculate the acceleration due to gravity (g) on each planet by dividing the force by the mass. Therefore, we can use the formula: `g = F / m`.

Comparing the gravitational field strengths on the different planets:We will calculate the acceleration due to gravity (g) on each planet.

For planet A: `

g = F / m

= 8.0 N / 0.50 kg

= 16 \(m/s^2\)`

For planet B: `g = F / m

= 30 N / 3.0 kg

= 10 \(m/s^2\)

For planet C: `g = F / m

= 45 N / 3.0 kg

= 15 \(m/s^2\)

For planet D: `g = F / m

= 60 N / 6.0 kg

= 10 \(m/s^2\)

`So we see that planet A has the strongest gravitational field, followed by planet C, then planet B and planet D have the same gravitational field strength.

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Answer:

2cm/year

Explanation:

20000/10000=2cm/year

Explanation:

formation of compounds because the electric forces compel the atoms to attract each other and formed bonds which leads to the formation of chemical compounds. The attractive or repulsive interaction between any two charged bodies is known as an electric force so the attraction between two opposite charged atoms causes the formation of compounds so we can conclude that electric forces are important for the formation of compounds.

The correct AC power priority for AC bus 2 is: Utility power, Emergency power, Standby power, Uninterruptible Power Supply (UPS) and Generator power.

The AC power is not paralleled. An existing source of AC power is immediately disconnected in favour of the source that is currently connected to a generator bus. No source of AC power automatically enters the system (when it reaches proper voltage & frequently). It needs to be manually turned on. NB The "automatic generator on-line" feature on the NG has loosened this rule. If the APU fails or is turned off after takeoff while still powering the buses, this will automatically connect the engine generators.

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Understanding what a black hole is holds immense importance in unraveling the mysteries of the universe. A black hole can be defined as a region in space where gravity is so strong that nothing, not even light, can escape its gravitational pull.

Black hole is a region in space with a very strong gravitational field, which makes it difficult for anything, even light, to escape. It is essential for us to understand what a black hole is, as it is a fascinating concept that scientists have been researching for decades.

There are numerous reasons why it is important to understand black holes. Here are some of the reasons why:

1. It can assist us in comprehending the universe:Black holes can tell us a lot about the universe's origins, as well as how it functions. By studying black holes, we can learn more about how galaxies form and evolve, as well as the fundamental properties of the universe.

2. To learn more about physics:We can learn a lot about physics by examining black holes. For example, we can learn more about the properties of gravity and the behavior of matter under intense conditions by examining black holes.

3. To detect gravitational waves:The detection of gravitational waves is one of the most significant recent achievements in physics. By learning more about black holes, scientists can improve their ability to detect gravitational waves, which can provide important information about the universe.

4. For Space exploration:If humanity intends to travel beyond our solar system, we will need to learn how to navigate black holes. By studying black holes, we can learn more about the properties of space-time, which will be essential for future space exploration.

5. For developing new technologies:Scientific studies frequently lead to technological advancements. By studying black holes, scientists can learn about new technologies that may have a variety of applications, including space exploration and energy production.

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Explanation:

transverse wave is a type of wave that moves at right angles with the direction of the wave while a compressional/longitudinal wave is a wave that move parallel with the direction of the wave travel

In this problem, we are given that the heat of fusion for aluminum is 396.6 J/g, which means that it takes 396.6 joules of heat to melt one gram of aluminum at its melting point.

We are also given that 250 kJ of heat is absorbed when the aluminum melts.

To find the mass of aluminum that would absorb this amount of heat, we can use the equation Q = m * ΔH_fus, where Q is the heat absorbed, m is the mass of aluminum, and ΔH_fus is the heat of fusion for aluminum.

Substituting the values given, we get:

250,000 J = m * 396.6 J/g

Solving for m, we get:

m = 630.1 g

Therefore, the mass of aluminum required to absorb 250 kJ of heat when it melts at its melting point is approximately 630.1 grams.

It's important to note that the heat of fusion is a characteristic property of a substance, which means that it is constant for a given substance at a given pressure and temperature.

This property can be used to calculate the amount of heat required to melt a given amount of a substance or the amount of substance that will melt with a given amount of heat.

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The de Broglie wavelength of a proton moving with a speed of 1.5 x 10^6 m/s is approximately 2.65 x 10^-13 meters. The de Broglie wavelength formula, which connects a particle's momentum to its wavelength, can be used to determine a proton's wavelength. The equation is:

λ = h/p,

where h is the Planck constant and p is the momentum of the particle.

For a proton moving with a speed of 1.5 x 10^6 m/s, the momentum can be calculated as follows:

Momentum (p) = mass (m) x velocity (v)
The mass of a proton is approximately 1.67 x 10^-27 kg. Therefore,
p = (1.67 x 10^-27 kg) x (1.5 x 10^6 m/s) = 2.505 x 10^-21 kg m/s

Using the de Broglie wavelength formula, we get:

λ = h/p
where h = 6.626 x 10^-34 J s (Planck's constant)

λ = (6.626 x 10^-34 J s) / (2.505 x 10^-21 kg m/s)
λ = 2.65 x 10^-13 m

Therefore, the de Broglie wavelength of a proton moving with a speed of 1.5 x 10^6 m/s is approximately 2.65 x 10^-13 meters.

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Answer:

Option A - Because of Newton's first law of motion

Explanation:

This is as a result of Newton's first law of motion.

Newton's first law of motion which is also referred to as the law of inertia states that; an object at rest will remain at rest and an object in motion will remain in motion with the same speed and in the same direction unless it's acted upon by an unbalanced force.

In this question, the car is at rest and it doesn't move because the upward force of the car is balanced by the downward pull of gravity. It can only move when an external force is applied to it. This fulfills Newton's first law of motion.

Answer:

F is the force applied to the object and d or "S" is the distance through which the force is applied

Solids can be classified into two types: crystalline and amorphous. Crystalline solids are the most common type of solid. They are characterized by a regular crystalline organization of atoms that confer a long-range order. Amorphous, or non-crystalline, solids lack this long-range order.

Answer: What is the force that opposes motion between two surfaces in contact with each ... How is the relationship among mass, force and acceleration explained? ... When a force is exerted on a box, an equal and opposite force is exerted by the box.

It is possible because the rubber ball has mechanical energy which is equal to potential energy.

Mechanical energy of an object is the total energy possessed by the object, including the potential energy and the kinetic energy.

M.A = K.E + P.E

Kinetic energy is the energy possessed by an object due to its motion.

Potential energy is the energy possessed by an object due to its position.

When kinetic energy (K.E) = 0

M.A = P.E

Thus, it is possible because the rubber ball has mechanical energy which is equal to potential energy.

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The change in the momentum is -0.5 Kgm/s

Momentum is the  product of the mass of a particle and its velocity. As a vector quantity, momentum possesses both magnitude and direction.

The amount of motion is multiplied by the mass and speed of the object in motion to determine its momentum. The fact that the thing is moving makes it a vector quantity. The result of the object's mass and velocity is what determines it.

Now we know that;

Momentum = mass * velocity

We have that the change in the momentum is;

Δp = mv - mu

Thus we have that;

Δp =  1(1.5 - 2)

Δp = -0.5 Kgm/s

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Answer:Galileo

Explanation:

It is generally knowledge that sound waves may bend around corners or pass through doorways, enabling us to hear conversations taking place in nearby rooms.

The air on the opposing side of the barrier also vibrates as a result of the audio hitting the wall. You will be able to hear some sound through a sturdy, solid wall since it won't spread the vibrations too much.

A reflecting wave is created as a sound crosses a room and collides with a wall, reintroducing some of that waveform back into the space. The originating sound will endeavor to go through the wall and into the next space. Sound Transmission is the name for the energy that remains after this transmission.

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Answer: they attract each other .

Explanation: jus took it.

The ciliary body is a wedge-shaped thickening in the middle layer of the eyeball that controls the shape of the lens.

The ciliary body is a section of the middle layer of the eye's wall. It is located behind the iris.  It includes a ring-shaped muscle that modifies the curvature of the lens when the eye focuses.

Additionally, it creates the transparent liquid that fills the area between the iris and the cornea. Aqueous humor is the name of this fluid in the eye.

It also contains the ciliary muscle, which modifies the lens' shape when your eyes focus on a close object.

The anterior pars plicata and the posterior pars plana are two parts of ciliary body. The anterior vitreous comes into contact with the pars plana, which creates a smooth surface. The ciliary processes, which are 70–80 radiating ridges, are produced by the pars plicata.

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The final velocity of the truck after the collision is 12 m/s in the same direction (east) as before the collision.

To determine the final velocity of the truck after the collision, we can use the principle of conservation of momentum.

The initial momentum of the system (truck + minivan) before the collision is given by:

Initial momentum = (mass of truck) × (velocity of truck) + (mass of minivan) × (velocity of minivan)

                  = (3500 kg) × (20.0 m/s) + (2000 kg) × (0 m/s)  [since the minivan is parked]

Since the minivan is stationary before the collision, its initial velocity is 0 m/s.

The final momentum of the system after the collision is given by:

Final momentum = (mass of truck) × (final velocity of truck) + (mass of minivan) × (final velocity of minivan)

                 = (3500 kg) × (final velocity of truck) + (2000 kg) × (14.0 m/s)  [given]

According to the conservation of momentum, the initial momentum of the system should be equal to the final momentum:

Initial momentum = Final momentum

(3500 kg) × (20.0 m/s) + (2000 kg) × (0 m/s) = (3500 kg) × (final velocity of truck) + (2000 kg) × (14.0 m/s)

Now, we can solve the equation to find the final velocity of the truck:

(3500 kg) × (20.0 m/s) = (3500 kg) × (final velocity of truck) + (2000 kg) × (14.0 m/s)

70000 kg·m/s = (3500 kg) × (final velocity of truck) + 28000 kg·m/s

42000 kg·m/s = (3500 kg) × (final velocity of truck)

final velocity of truck = 42000 kg·m/s / 3500 kg

final velocity of truck = 12 m/s

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The spaceship is traveling at a speed of 1877.8 millimeters per second.

The spaceship is traveling at a speed of 4200 miles per hour. To convert this speed to millimeters per second, we need to perform a few conversions.

First, let's convert miles to kilometers. There are approximately 1.60934 kilometers in one mile.

So, the speed in kilometers per hour is 4200 miles per hour multiplied by 1.60934 kilometers per mile. Next, let's convert kilometers per hour to meters per second.

There are 1000 meters in one kilometer, and 3600 seconds in one hour. So, the speed in meters per second is the speed in kilometers per hour divided by 1000 meters per kilometer, and then divided by 3600 seconds per hour.

Finally, let's convert meters per second to millimeters per second. There are 1000 millimeters in one meter. So, the speed in millimeters per second is the speed in meters per second multiplied by 1000 millimeters per meter.

Let's calculate the conversion step-by-step:

1. Convert miles to kilometers: 4200 miles/hour × 1.60934 kilometers/mile = 6758.048 kilometers/hour

2. Convert kilometers to meters and hours to seconds: 6758.048 kilometers/hour ÷ 1000 meters/kilometer ÷ 3600 seconds/hour = 1.8778 meters/second

3. Convert meters to millimeters: 1.8778 meters/second × 1000 millimeters/meter = 1877.8 millimeters/second

Therefore, the spaceship is traveling at a speed of 1877.8 millimeters per second.

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