A SHM has the equation y = 2.0cos 4t+ 45) What is the initial phase angle? b) What is the displacement at t=0 s? c) Calculate velocity at t=0 s. d) What is the maximum velocity?​

If a vehicle starts to skid on water (hydroplane), the driver should ease off the accelerator, brake gently and gently steer back onto the pavement True.

If a vehicle starts to skid on water (hydroplane), it means that the tires have lost contact with the road and are riding on a thin layer of water, resulting in a loss of traction and control. To regain control of the vehicle, the driver should ease off the accelerator to reduce the speed, and gently steer the vehicle back onto the pavement.

Braking should be done gently, as sudden braking can cause the wheels to lock up and increase the risk of a spin-out or loss of control. It is important for drivers to stay calm and focused during hydroplaning to avoid accidents.

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True. To restore control, the driver should gradually release the gas, softly use the brakes and turn the car back onto the roadway.

This is due to the fact that hydroplaning makes it challenging to regulate the direction and speed of the vehicle since it happens when the tyres lose contact with the road due to a layer of water. If the brakes are used too firmly, the wheels may lock up and the skid will worsen. To regain control of the vehicle, it is crucial to avoid making abrupt moves and instead make small adjustments. Additionally, keeping adequate tyre tread depth and the right tyre pressure might aid in avoiding hydroplaning altogether.

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The acceleration of the dragster in multiple of g, when he accelerates at a rate of 39.2 m/s², is 4g.

To express the acceleration of the dragster in multiples of g, we need to divide the acceleration by the acceleration due to gravity on Earth.

Number of g's = (Acceleration of the dragster) / (Earth's gravitational acceleration)

First, we need the value of Earth's gravitational acceleration, which is approximately 9.81 m/s².

Now, we can use the given acceleration of the dragster (39.2 m/s²) and the formula:

Number of g's = (39.2 m/s²) / (9.81 m/s²) = 4

Therefore, the driver of the dragster experiences an acceleration equivalent to about 4 times the acceleration due to gravity on Earth.

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The investigator must increase the current by a factor of 5 to keep the magnetic field strength constant when the distance is increased from 1.0 cm to 5.0 cm.

When a current flows through a wire, it produces a magnetic field around it. The strength of this field depends on the current and the distance from the wire. According to the inverse-square law, the magnetic field strength decreases as the distance from the wire increases.

For a long, straight wire carrying a current I, the magnetic field strength at a distance r from it can be calculated as follows:

B = μ0 I ÷ (2πr)

where μ0 is the permeability of free space, which is a constant.

If the magnetic field strength is to remain constant when the distance is increased from 1.0 cm to 5.0 cm, then we can set the two expressions for B equal to each other:

μ0 I ÷ (2πr₁) = μ0 (xI) ÷ (2πr₂)

where x is the factor by which the current must be increased.

Simplifying this expression, we get:

x = r₂ ÷ r₁ = 5.0 cm ÷ 1.0 cm = 5

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The correct answer is option D) When the fox eats an animal that eats plants, it receives energy indirectly from the sun.

Energy in a food chain flows from the sun, to the producers (plants), to the primary consumers (herbivores), to the secondary consumers (carnivores), and so on. Omnivores, such as foxes, consume both plants and animals, but they typically obtain more of their energy from consuming other animals.

When a fox eats an animal that eats plants, it is receiving energy indirectly from the sun. The plants that the prey animal consumed converted the energy from the sun into organic molecules through the process of photosynthesis. The prey animal then consumed those plants and converted the organic molecules into its own tissues. When the fox eats the prey animal, it is obtaining the energy stored in the prey's tissues.

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B. Power supplies are rated for efficiency based on watts. The efficiency of a power supply is determined by the ratio of its output power (in watts) to its input power (also in watts).

The lesser the  effectiveness, the  lower power is wasted as heat and the lesser the power given to the computer's  factors.   In addition to  effectiveness, power  inventories are rated for maximum affair power, which is generally expressed in watts. This standing represents the loftiest  quantum of power that the power  force can deliver to the computer's  factors.  

Other conditions,  similar as voltage and amperage conditions for their different affair connections, may be assigned to power  inventories. The maximum voltage and current that the power  force can produce on each connection are indicated by these conditions. Ohms, on the other hand, are a resistance unit that's infrequently used to grade power  force.

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The energy can be generated in this case from natural gas.

Natural gas can be used for energy generation in a smaller space, such as in a residential or commercial building. Natural gas can be used in a variety of applications, including for space heating, hot water production, cooking, and electricity generation.

In smaller spaces, natural gas-fired furnaces, boilers, water heaters, and stoves are commonly used. These appliances burn natural gas to produce heat, which can be used for space heating, water heating, and cooking. In addition, natural gas can be used to generate electricity through the use of natural gas-fired power plants or microturbines.

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The James Webb Space Telescope is designed to operate primarily in the infrared portion of the electromagnetic spectrum, with a wavelength range of 0.6 to 28 microns.

The James Webb Space Telescope (JWST) is a large, infrared-optimized space telescope that was originally scheduled to launch in 2018, but has since been delayed multiple times.

The range for JWST is a much wider range than the Hubble Space Telescope, which operates mainly in the visible and ultraviolet parts of the spectrum. By studying the infrared light emitted by stars and galaxies, the JWST will be able to observe objects that are too faint or too distant to be seen by other telescopes, and will provide new insights into the early universe, the formation of galaxies, and the formation of stars and planetary systems.

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The distance between the screen and the lens of the projector is approximately 6.19 cm.

To determine the distance between the screen and the lens of the projector, we can use the lens formula:

1/f = 1/v - 1/u

Where:

f = focal length of the lens (12.0 cm)

v = distance of the image (screen) from the lens (unknown)

u = distance of the object (display) from the lens (12.8 cm)

Plugging in the values into the lens formula:

1/12.0 = 1/v - 1/12.8

Now, let's solve for v:

1/v = 1/12.0 + 1/12.8

1/v = (12.8 + 12.0) / (12.0 * 12.8)

1/v = 24.8 / 153.6

v = 153.6 / 24.8

v ≈ 6.19 cm

Therefore, the distance between the screen and the lens of the projector is approximately 6.19 cm.

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First, we need to find the total mass of the system by adding the masses of the two objects: m_total = m1   m2 = 50.0 kg   75.0 kg = 125.0 kg  Next, we can plug in the given force and mass values into the equation: F = ma 40.0 N = 125.0 kg * a  Solving for a: a = 40.0 N

125.0 kg * a

Solving for a:

a = 40.0 N / 125.0 kg

a = 0.32 m/s^2

Therefore, the acceleration of the system is 0.32 m/s^2.

The part of the wave indicated below is the wave crest (option A)

A wave crest is the highest point or peak of a wave. It is the point on the wave where the upward displacement of the medium is maximum. In ocean waves, for example, the crest is the highest point of the wave above the average water level, while in sound waves, the crest is the point of maximum air pressure.

The distance between two consecutive wave crests is called the wavelength, and it determines the frequency and energy of the wave. Wave crests are an important concept in the study of waves and are used to describe wave behavior and properties.

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The minimum coefficient of static friction between block 1 and block 2 is (F-f-m*a)/g, which can be calculated by equating the horizontal forces acting on block 1.

The minimum coefficient of static friction between block 1 and block 2 can be calculated by equating the forces acting on block 1 in the horizontal direction. Since block 1 and block 2 have the same acceleration, the net force on block 1 is:

F - f - μ_smg = m*a

where F is the force applied to block 3, μ_s is the coefficient of static friction between block 1 and block 2, and g is the acceleration due to gravity.

Since block 1 and block 2 have the same mass, we can simplify the above equation to:

F - f -  = ma

Solving for μ_s, we get:

μ_s = (F - f - m*a)/g

Therefore, the minimum coefficient of static friction between block 1 and block 2 is (F - f - m*a)/g.

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The drawing provided by the manufacturer, which details the permitted interconnections between intrinsically safe and associated apparatus or between nonincendive field wiring apparatus or associated nonincendive field wiring apparatus, is called a wiring diagram.

A wiring diagram typically includes detailed information about the wiring connections between components, as well as any necessary safety measures such as grounding or shielding. It may also include information about the voltage, current, and power requirements of the system, as well as any limitations or restrictions on the use of particular components or configurations.

This diagram is a critical part of the installation and maintenance process for intrinsically safe and nonincendive electrical systems, as it helps ensure that the correct connections are made and that the system operates safely and effectively.

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The complete question is:

A drawing, provided by the manufacturer, that details permitted interconnections between the intrinsically safe and associated apparatus or between the nonincendive field wiring apparatus or associated nonincendive field wiring apparatus is called a ______________

To answer this question, more context is needed, since force can be exerted by one object on another object. In this case, the body receiving the force would be the object that receives the force, that is, the object on which the force is being exerted. For example, if a person pushes a box, the receiving body of the force would be the box, since it is receiving the force exerted by the person.

Answer:

The question is not quite clear but the receiving body of a force will be the object on which the force is being exerted upon. Hope this helps.

The argument that best supports the student's claim is: "If the distance between two objects increases, the gravitational force between the objects will decrease." This statement aligns with the principles of gravitational force as defined by Isaac Newton's Law of Universal Gravitation.

According to this law, the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. In simpler terms, as the distance between two objects increases, the gravitational force between them decreases, and vice versa.

The other statements provided do not accurately represent the relationship between distance and gravitational force. For example, saying that the gravitational force will not change or will disappear as the distance changes contradicts the Law of Universal Gravitation. Similarly, claiming that the gravitational force will increase as the distance between objects increases is also incorrect based on the principles of this law.

In conclusion, the argument stating that an increase in distance between two objects leads to a decrease in the gravitational force between them best supports the student's claim, as it accurately reflects the principles established in the Law of Universal Gravitation.

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m_c (mass of cylinder)=50 kg

d=25 cm so r=12.5 cm = 0.125 m m_b

(mass of bucket)=20 kg

So using the equations: RT = � = I � RT= I � (m_b)g-T= (m_b)aR And from what I understand, this is the same as the tangential acceleration? (m_b)g-T=(m_b) � r = F T= ( i � ) / r (m_b)g -(( i � ) / r ) = m � r � ( ((m_b)r) + (I /R ) ) = (m_b)g Leaving us with the final : � = ((m_b)g)/(((m_b)r) + (I /r)) Using this equation, I found I = 0.390625 and the final answer would be 35 rad/s^2 Sorry for such a long post--this is my first time on the website and I read the rules so hopefully I've done everything correctly! Thank you all!

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If you see trees on a hill that tilt uphill, it is likely that you have observed a specific type of mass wasting known as creep.

Creep is a slow, gradual type of mass wasting that occurs when soil or regolith moves slowly downhill.

Here is a step-by-step explanation:

1) Creep is caused by various factors, including changes in temperature, moisture content, and freeze-thaw cycles.

These factors cause the soil to expand and contract, which leads to the gradual downhill movement of the soil.

2) As the soil moves downhill, it can cause trees on the hill to tilt uphill.

This is because the soil moves very slowly, and the trees are unable to keep up with the movement, resulting in the uphill tilt.

3) Creep is a type of mass wasting that is characterized by slow, continuous movement of soil or regolith.

This movement can occur over a long period of time, and may be difficult to detect unless you observe the effects of the movement, such as the uphill tilt of trees.

4) Other signs of creep may include tilted fence posts or retaining walls, as well as cracks or bulges in the ground.

These signs may indicate that the soil is moving downhill, even if the movement is not immediately visible.

5) Creep can cause significant changes to the landscape over time, and can even pose a risk to infrastructure and property.

It is important to monitor areas that are prone to creep and take steps to prevent damage or mitigate the effects of the movement.

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To lift this weight, you would need a force greater than or equal to 3,920 N (assuming you are lifting it vertically).

weight = [tex]1 m^3 \times 400 kg/m^3 \times9.8 m/s^2[/tex]

weight = 3,920 N

Force is a physical quantity that describes the interaction between objects or systems. The SI unit of force is the Newton (N), which is defined as the amount of force required to accelerate a one kilogram mass at a rate of one meter per second squared.

Force is also responsible for deformations in solid objects, such as stretching or compressing a spring. Nuclear forces are responsible for the interactions between subatomic particles, and frictional forces are the forces that resist motion when two surfaces come into contact. Gravitational force is the force that pulls objects towards each other due to their masses. Electromagnetic force is responsible for the interactions between charged particles, such as in electricity or magnetism.

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The word that best describes something that works in the same way as a radar is "sonar".

Sonar is an acronym for "sound navigation and ranging," and it is a technology that uses sound waves to detect and locate objects underwater. Sonar works by emitting a sound wave or pulse and then measuring the time it takes for the sound to bounce back from an object and return to the source. This information is then used to calculate the distance to the object and its location. Like radar, sonar is used in a variety of applications, including military, scientific, and commercial.

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Answer:

C.

Explanation:

When Venus surface get bit cold when weather hits the planet gets soupy clouds and etc.

Answer:

time of flight=( 2U sinx ) ÷ g

Explanation:

a)

u=73.5m/s , x= 20° , g =10m/s^2 then t= {2×73.5 × sin 20°} ÷ 10 = 134.2 ÷ 10 = 13.42 sec b) range is the distance, range= (u^2 sin 2 x ) ÷g = ({73.5 }^2 × sin 2 × 20 )÷ 10 =4025.3÷10 = 402.53meters. I couldn't finish the question so sorry

A credit card can be held up to 1.04 cm away from the wire with a magnetic field of 1000 gauss.

We can use the formula for the magnetic field around a long, straight wire to calculate the magnetic field at a certain distance from the wire:

B = μ0I / (2pi*r)

where B is the magnetic field, μ0 is the permeability of free space (4pi10^-7 T*m/A), I is current, and r is the distance from the wire.

We want to find the maximum distance r such that the magnetic field is less than 1000 gauss (0.1 tesla). We can rearrange the formula to solve for r:

r = μ0I / (2pi*B)

Plugging in the values given, we get:

r = (4pi10^-7 Tm/A)(6.5 A) / (2pi0.1 T) = 1.04 cm

Therefore, a credit card can be held up to 1.04 cm away from the wire without damaging its magnetic strip, rounded to two significant figures.

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The magnitude of the velocity of the 6.0 kg mass after the collision is approximately 1.7 m/s.

We can solve this problem using conservation of momentum and conservation of kinetic energy. Conservation of momentum states that the total momentum of a system is conserved if there are no external forces acting on it. In this case, the system is the two masses.

Let p1 and p2 be the initial momenta of the 3.0 kg and 6.0 kg masses, respectively, and p1' and p2' be their final momenta after the collision. Since the 6.0 kg mass is initially at rest, we have:

p1 = m1v1 = (3.0 kg)(10 m/s) = 30 kg·m/s

p2 = m2v2 = (6.0 kg)(0 m/s) = 0 kg·m/s

After the collision, the 3.0 kg mass moves at an angle of 35° with a speed of 8.0 m/s. We can break its velocity into x- and y-components:

vx = v1' cos(35°) = 8.0 m/s cos(35°) ≈ 6.6 m/s

vy = v1' sin(35°) = 8.0 m/s sin(35°) ≈ 4.6 m/s

The total momentum of the system after the collision is:

p1' + p2' = m1v1' + m2v2'

We can use conservation of momentum to say that p1 + p2 = p1' + p2', so:

p1' + p2' = 30 kg·m/s

Substituting in the known values, we have:

(3.0 kg)(6.6 m/s) + (6.0 kg)v2' = 30 kg·m/s

Solving for v2', we get:

v2' = (30 kg·m/s - 19.8 kg·m/s) / 6.0 kg ≈ 1.7 m/s

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When a bow is drawn and has 40 J of potential energy, the arrow's kinetic energy when fired will be:

Your answer: d. 40 J

Explanation:

Potential energy is the energy that an object possesses due to its position, configuration, or state of being. It is stored energy that has the potential to do work in the future. The amount of potential energy that an object has depends on its position or configuration relative to other objects or systems. For example, a bow that is pulled back has potential energy that can be released as kinetic energy when it is released.

Kinetic energy, on the other hand, is the energy that an object possesses due to its motion. It is the energy that an object possesses because it is in motion and is able to do work by causing a change in another object's motion or position. The amount of kinetic energy that an object has depends on its mass and its velocity. For example, a moving car has kinetic energy that can be transferred to another object if it collides with it.

When the bow is drawn, it stores potential energy. When fired, this potential energy is converted into kinetic energy for the arrow. In an ideal situation with no energy loss, the arrow's kinetic energy will be equal to the bow's potential energy. Therefore, the arrow will have a kinetic energy of 40 J.

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Latency increases as afterload increases because it takes the muscle more time to generate enough muscle tension to overcome the added resistance of the increased afterload.

The muscle needs to develop a greater force to shorten and lift the added load, resulting in a delay or lag time before the contraction begins. This delay is the latency, which increases as the afterload increases. Once the muscle tension is great enough to overcome the afterload, the muscle can then contract and move the load. This phenomenon is due to the properties of the muscle fibers and the amount of energy required to generate muscle tension, which increases with greater afterload.

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The Maxwell's equation that allows us to calculate the current flowing in the metal ring is Faraday's Law of Electromagnetic Induction, which states that the magnitude of the induced EMF (electromotive force) is equal to the rate of change of magnetic flux through a conducting loop.

In this case, the rotating Apollo spacecraft generates a changing magnetic flux through the metal ring due to its motion through the Earth's magnetic field. Therefore, an EMF is induced in the metal ring, which causes a current to flow.

To calculate the magnitude of this current, we need to know the rate of change of the magnetic flux through the metal ring. This can be found by taking the time derivative of the magnetic flux. Since the spacecraft is rotating about a perpendicular axis, the magnetic flux through the metal ring will vary sinusoidally with time. Therefore, we can express the time-varying magnetic flux through the metal ring as:

Φ(t) = Φmax sin(2πft)

where Φmax is the maximum magnetic flux through the metal ring, f is the frequency of the spacecraft's rotation, and t is time.

Taking the time derivative of this expression, we get:

dΦ/dt = Φmax (2πf) cos(2πft)

This expression gives us the rate of change of magnetic flux through the metal ring, which is proportional to the induced EMF. Finally, by applying Ohm's Law (V = IR) to the metal ring, we can calculate the current flowing in the ring. The current is given by:

I = V/R

where V is the induced EMF and R is the resistance of the metal ring. The resistance of the ring depends on its material properties and dimensions.

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The mean temperature of her child with the following results 97.3°F, 98.0°F, 99.0°F, and 97.7°F is 98° F

The mean temperature is also known as the average of the temperature taken by her with the digital thermometer. The digital thermometer is used to measure the temperature of the body by placing it either orally or axially.

The mean temperature is calculated as the ratio of the sum of all the temperatures recorded and the number of times the frequency with which temperature is recorded.

It can be written as = [tex]= \frac{T_1+T_2+....T_N}{N}[/tex]

where N is the number of observations

Therefore mean temperature

[tex]=\frac{97.3+98.0+99.0+97.7}{4}\\\\=\frac{392}{4}\\\\[/tex]

=98° F

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Your classmate's mean temperature is 98°F.

Solution - Hi! To calculate the mean temperature of your classmate after using the digital thermometer, follow these steps:

1. Add up the temperatures: 97.3°F + 98.0°F + 99.0°F + 97.7°F = 392°F
2. Count the number of temperature readings: 4
3. Divide the total temperature by the number of readings: 392°F / 4 = 98°F

Your classmate's mean temperature is 98°F.

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The kinetic energy in Schrödinger's equation for the H2 molecule includes contributions from both electrons and nuclei. Thus the correct option is C.

The kinetic energy term in Schrödinger's equation for the H2 molecule refers to the energy involved in the motion of the particles. The H2 molecule comprises two hydrogen nuclei and two electrons, therefore the electrons and the nuclei both contribute to the kinetic energy.

The nuclei contribute to the kinetic energy by their mobility, whereas the electrons do so through their wave-like behaviour. The H2 molecule's kinetic energy term in Schrödinger's equation includes contributions from both electrons and nuclei, making option C the right response.

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The kinetic energy in Schrödinger's equation for the H2 molecule includes contributions from both electrons and nuclei. Thus the correct option is C

explanation - For Schrödinger's equation of the H2 molecule, the kinetic energy has contributions from both electrons and nuclei. This is because the kinetic energy term in the equation accounts for the motion of all particles in the system, which in this case includes both the electrons and nuclei of the H2 molecule. Therefore, options a, b, and d are incorrect.

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We do not have the value of yo, the initial vertical position of the squirrel (height of the tree limb), so we cannot calculate the exact height of the squirrel above the ground without that information.

What is Velocity?

Velocity is a vector quantity that describes the rate of change of an object's position with respect to time. It specifies both the speed and direction of an object's motion. Velocity is defined as the displacement of an object per unit of time, and it is typically denoted by the symbol "v"

We need to convert the horizontal distance from centimeters to meters and use consistent units in our calculations. Plugging in the given values:

x = 0.186 m

xo = 0 m

vox = 0.1 m/s

Using the horizontal motion equation, we can calculate the time of flight (t) of the nut:

0.186 = 0 + 0.1*t

t = 1.86 seconds

Now, we can use the vertical motion equation to calculate the height (y) of the squirrel:

y = yo + voyt - 0.5g*[tex]t^{2}[/tex]

Since the squirrel loses its grip and has no initial vertical velocity (voy = 0), we have:

y = yo - 0.5g[tex]t^{2}[/tex]

Plugging in the known values:

g = 9.8 m/[tex]s^{2}[/tex]

t = 1.86 s

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The net electric field at point A is 3.58 x 10^7 N/C, directed towards q₂.

To find the net electric field at point A, we need to first find the electric field due to each charge individually, and then add them up vectorially. The electric field due to a point charge is given by:

E = kq/r²

where k is Coulomb's constant, q is the charge of the point charge, and r is the distance between the point charge and the point where the electric field is being calculated.

For point A, the distance between q₁ and A is 35 cm (25 cm between q₁ and q₂ + 10 cm between q₂ and A), and the distance between q₂ and A is 10 cm. Therefore, the electric field due to q₁ at A is:

E₁ = kq₁/r₁² = (9.0 x 10^9 N*m²/C²)(-7.50 x 10^-9 C)/(0.35 m)²

= -1.95 x 10^6 N/C

The negative sign indicates that the electric field due to q₁ is directed towards the charge itself. Similarly, the electric field due to q₂ at A is:

E₂ = kq₂/r₂² = (9.0 x 10^9 N*m²/C²)(-10.5 x 10^-9 C)/(0.10 m)²

= -3.78 x 10^7 N/C

The negative sign here also indicates that the electric field due to q₂ is directed towards the charge itself.

To find the net electric field at A, we add these two electric fields vectorially. Since the electric fields are in opposite directions, we subtract their magnitudes:

|E_net| = |E₁| - |E₂| = 3.58 x 10^7 N/C

The direction of the net electric field is towards q₂, which is the direction of E₂.

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Answer:

acceleration = 2m/s^2

distance= 100 meters

Explanation:

acceleration = (final velocity - initial velocity) / time

acceleration = (20 m/s - 0 m/s) / 10 s

-----------------------------------------------------------------------------------

distance = (initial velocity * time) + (0.5 * acceleration * time^2)

since the car starts from rest, the initial velocity is 0.

distance = 0.5 * 2 m/s^2 * (10 s)^2