Please help me do this problem

Answer: The light bends because light travels fast but it slows down in a denser medium. For example light refracts in water or it bends after passing through air. When light passes through air ( a less dense medium ) then through water ( a more dense medium ) the beam of light bends because light travels more slowly in a denser medium then it picks up its pace again once it passes. The density of the substance determines how much the light is refracted. I hope this makes sense and I hope this answered your question!! :)

Answer:

Coins made of a good conductor will slow down as they roll past the magnet.

Explanation:

Conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.

One of the ways in which a coin operated vending machine checks to make sure that the coins fed to it are genuine is to roll them past a strong magnet. As such, coins made of a good conductor will slow down as they roll past the magnet due to the force of attraction that exists between the magnet and the coin (metal).

This ultimately implies that, the magnet tends to attract the coin to itself and as such slowing down the motion of the coin. Similarly, if it's a fake coin, it simply means it would be a bad conductor and as such it will roll fast past the strong magnet.

Answer:

These two groups of planets are separated by the asteroid belt, a disk of small rocky bodies orbiting the sun between Mars and Jupiter.

Explanation:

Your welcome!

The height of the ball will rise after the bounce is 10 m by using the energy conserved.

Law of conservation of energy states that, in the closed system the energy remains constant in the system and its surroundings. It states that the energy can neither be created nor destroyed and the energy is transformed from one system to another.

From the given, When the ball rises up to a certain height, the kinetic energy is converted into potential energy, and hence the energy is conserved.

The total energy is conserved,

Energy = potential energy + Kinetic energy = constant

Kinetic energy = potential energy

1/2 (mv)² = mgh (Kinetic and potential energy, mass remains same).

speed of the ball (u) = 14.1 m/s

height of the ball=?

acceleration due to gravity, g = 9.8 m/s²

h = 14.1×14.1 / (2×9.8)

 = 9.9 m

Thus, the height of the ball is 10 m.

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The distance car will cover at the given speed and time will be distance = 3.8 m.

To calculate distance using formula,

s = d / t

where,

s is speed

d is distance

t is time

So, known in this are

s = 20m/s

t = 0.19 s

d = ?

Now, putting values,

speed = distance / time

20 m/s = distance / 0.19 sec

distance = 20 m/s x 0.19 sec

distance = 3.8 m

The proportion of a distance (regardless of direction) traveled to the time needed to cover that distance.

Speed, expressed in terms of meters per second, is the rate at which an object's position changes. An object moves one meter in one second, for instance, if it starts at the origin and moves three meters in three seconds. Simple division of time by distance yields the equation for speed.

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In order to reach the maximum height of 2 meters, Kangaroo should jump with an initial speed of 6.26 m/s.

The three equations of motion are -

first law → v = u +at

second law → S = ut + 1/2 at²

Third law → v² - u² = 2aS

Given is a kangaroo who jumped 2 meters high.

Assume that the kangaroo jumped with an initial velocity of 'u' m/s.

The maximum height achieved is 2 meters.

Acceleration due to gravity will be -9.8 m/s²

At maximum height, the velocity will be zero. Therefore, the final velocity 'v' will be zero. Using third law →

v² - u² = 2aS

- u² = - 2gS  

u² = 2gS

u² = 2 x 9.8 x 2

u² = 39.2

u = 6.26 m/s

Therefore, in order to reach the maximum height of 2 meters, Kangaroo should jump with an initial speed of 6.26 m/s.

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The correct statement regarding minimum allowable bend radii for 1.5 inches OD or less aluminum alloy and steel tubing of the same size is:

The minimum radius for steel is greater than for aluminum.

This means that steel tubing requires a larger bend radius compared to aluminum tubing of the same size. It is important to follow the specified minimum bend radii to prevent excessive stress on the tubing. Using a smaller radius than recommended can result in deformation, cracking, or failure of the tubing. Therefore, it is necessary to adhere to the guidelines to ensure the structural integrity and longevity of the tubing.

When it comes to minimum allowable bend radii for 1.5 inches OD or less aluminum alloy and steel tubing of the same size, the true statement is that the minimum radius for steel is greater than for aluminum. This means that steel tubing requires a larger bend radius to avoid excessive stress on the material during bending.

Bend radii are important considerations in tubing applications as they directly impact the structural integrity and performance of the tubing. If the bend radius is too small, it can lead to deformation, cracking, or failure of the tubing, compromising its functionality and potentially causing safety concerns.

Steel tubing typically has a higher yield strength and greater stiffness compared to aluminum, which is why it requires a larger bend radius. Aluminum alloys, on the other hand, are more ductile and can withstand smaller bend radii without compromising their structural integrity.

Adhering to the specified minimum bend radii ensures that the tubing is bent within safe limits, preventing excessive stress concentrations and maintaining the desired mechanical properties. It is essential to follow these guidelines to ensure the longevity and reliability of the tubing in various applications, including automotive, aerospace, construction, and industrial sectors.

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Answer:

The star's luminosity rises above its previous level. Because it is so cool, the surface will be red, and it will be much farther away from the center than it was during the earlier stages of star evolution. Despite its lower surface temperature, the red giant has a large surface area, which makes it very luminous.

The work done by the crane on the load is positive. As the load was initially at rest, the crane had to apply a force greater than the weight of the load to lift it up against gravity. This means that the crane did work on the load by transferring energy to it in the form of gravitational potential energy.

The work done is equal to the product of the force applied by the crane and the distance over which the force was applied.

Once the load reaches the top of the tower, the work done on the load is zero. This is because the load is no longer moving and is not experiencing any change in potential energy or kinetic energy. The crane is also not applying any force on the load at this point.

As the crane gently sets the load down, the work done on the load is negative. The crane is applying a force that is less than the weight of the load, and the load is moving in the opposite direction to its initial motion. This means that the crane is transferring energy out of the load, resulting in a decrease in the load's potential energy. The work done is equal to the product of the force applied by the crane and the distance over which the force was applied, which is in the opposite direction to the direction of motion.

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The electric force between the two balloons is approximately 1.04 x \(10^{-12}\) N.

Coulomb's Law:

The electric force between two charged objects can be calculated using Coulomb's Law, which states that the magnitude of the electric force F between two charged objects is directly proportional to the product of their charges (q1 and q2) and inversely proportional to the square of the distance (r) between them:

F = k * (q1 * q2) / r²

where k is the Coulomb constant, which has a value of approximately 9.0 x \(10^{9}\) N*\(m^{2}\)/\(C^{2}\).

In this case, each balloon acquires a charge of 1.2 x \(10^{-7}\) C, so the total charge on both balloons is 2 * 1.2 x \(10^{-7}\)C = 2.4 x \(10^{-7}\)C. The distance between the balloons is 0.5 m.

Plugging in these values into Coulomb's Law, we get:

F = (9.0 x \(10^{9}\) N*\(m^{2}\)/\(C^{2}\)) * [(1.2)²x (\(10^{-7}\) C)²/ (0.5m)²]

Simplifying this expression gives:

F = 1.0368 x \(10^{-12}\) N

Therefore, the electric force between the two balloons is approximately 1.04 x\(10^{-12}\)    N.

What is magnitude?

Magnitude refers to the size or extent of something, usually measured in numerical or quantitative terms. It can refer to a physical quantity, such as length, mass, or volume, or it can refer to other measurable attributes, such as brightness, intensity, or force. In general, magnitude is a relative measure, meaning that it is typically expressed as a comparison between two or more things.

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The given amplifier circuit is a common-source amplifier. The equivalent circuit diagram of the amplifier includes a MOSFET N5486 transistor. We can determine the drain current (ID) and drain-source voltage (VDS) using the following equations:

1. Voltage at the source terminal (VS) is calculated using Ohm's law: VS = IS x RS.2. The drain current (ID) can be calculated using the equation ID = IS (1 + GVin), where Vin is the input voltage, G is the voltage gain, and IS is the current flowing through RD.Let's calculate the values of ID and VDS:

Given:- IS = VDD / RD = 10V / 10Ω = 1A- Vin = -1V / (1.5 x 10^6Ω + 0.47μF) = -0.6666667μA (using voltage divider rule)- G = -RD / RS = -10Ω / 3kΩ = -0.003333 Calculating ID:ID = 1A (1 - 0.003333 x 0.6666667 x 10^6)≈ 0.997A = 997mACalculating VDS:VDS = VDD - IDRD= 10V - 997mA x 10Ω≈ 10V - 9.97V≈ 0.03VTherefore, the values of ID and VDS are approximately ID = 997mA and VDS ≈ 0.03V, respectively.

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Answer:

Both technicians are correct.

Explanation:

Exhaust gas recirculation (EGR) contributes to limit the production of polluted gas mixture during internal engine combustion via an EGR valve. With the help of Exhaust gas recirculation (EGR), nitrogen oxides production is reduced drastically especially when the engine runs on diesel. Black smoke, engines making knocking sounds could be a clear indication of a bad EGR valve especially when the valve passage is blocked due to carbon deposits, or dirt from fuel blocking the valve opening thereby decreasing the power output, or in the case of the knock sounds, the fuel gets ignited early when the machine's operation at a given time is low. So, the Technicians are correct with the statements they made.

Answer:

im just 15 yearsold hehhez i dont know that either

Answer:

Initial velocity is independent of the slope of the graph; that is, the acceleration. An object thrown downward still accelerates after release at the same rate as an object that is dropped.

The height (y) of the pistol is 94 meters. To explain, we can use the fact that the horizontal and vertical motions are independent of each other.

To explain, we can use the fact that the horizontal and vertical motions are independent of each other. Since the bullet is fired horizontally, its initial vertical velocity is zero. We can use the equation for vertical motion:

\(y = (1/2)gt^2\)

where y is the vertical displacement, g is the acceleration due to gravity (approximately 9.8 m/s^2), and t is the time of flight.

The time of flight can be calculated using the horizontal distance and the horizontal velocity:

\(t = d/v\)

where d is the horizontal distance (196 m) and v is the horizontal velocity (356 m/s).

Substituting the values, we get:

\(t = 196 m / 356 m/s ≈ 0.551 seconds\)

Plugging this value into the equation for vertical motion, we find:

y = (1/2)(9.8 m/s^2)(0.551 s)^2 ≈ 94 meters.

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Answer:

gravity?

Explanation:

i dont have a lot of context but this is what i thought of so...

Stars and planets form when dust and gas from space is pulled together by gravitation.

In mechanics, gravity, often known as gravitation, is the force of attraction that acts on all matter. It has little impact on determining the intrinsic characteristics of common stuff because it is by far the weakest known force in nature.

In contrast, it governs the formations and evolution of stars, galaxies, and the entire cosmos by its extensive and ubiquitous action, which affects the trajectories of objects in the solar system and beyond the universe. All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass.

Hence, the stars and planets form when dust and gas from space is pulled together by gravitation.

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Answer:

see below

Explanation:

Gases flying out at high velocity out the back  

  rocket flying forward

Answer:

5.978 años luz

Explanation:

Hi! Your answer is: The distance between the Barnard's star and Earth is 5.978 light years.

Answer:  \(135.48\ m/s^2\) ,\(13.82g\)

Explanation:

Given

Missile velocity raises from 0 to \(8.4\ km/s\)

Time taken \(t=62\ s\)

Convert velocity into m/s

\(\Rightarrow 8.4=8.4\times 1000=8400\ m/s\)

Acceleration is the change of velocity w.r.t time

\(\Rightarrow a=\dfrac{8400-0}{62}\\\\\Rightarrow a=135.48\ m/s^2\)

In terms of gravity, it is

\(\Rightarrow \dfrac{135.483}{9.8}=13.82\)

Therefore, acceleration in terms of g is \(13.82g\)

The charge on the plates will remain constant, regardless of the change in the separation between the plates.

The charge on the plates of a parallel plate capacitor is given by the formula:

Q = C * V

Where:

Q is the charge on the plates

C is the capacitance of the capacitor

V is the potential difference between the plates

The capacitance of a parallel plate capacitor is given by the formula:

C = (epsilon * A)/d

Where:

epsilon is the permittivity of the material between the plates

A is the area of one of the plates

d is the separation between the plates

If the separation between the plates is doubled, the capacitance of the capacitor will be halved. However, the potential difference between the plates is being maintained at a constant value by the battery. Therefore, the charge on the plates will remain constant, regardless of the change in the separation between the plates.

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Answer:

W = 439998 J = 439.99 KJ

Explanation:

First, we will calculate the acceleration of the car by using the first equation of motion:

\(v_f = v_i + at\\\\a = \frac{v_f-v_i}{t}\)

where,

a = acceleration = ?

vf = final speed = \(108(\frac{km}{h})(\frac{1000\ m}{1\ km})(\frac{1\ h}{3600\ s})\) = 30 m/s

vi = initial speed = \(36(\frac{km}{h})(\frac{1000\ m}{1\ km})(\frac{1\ h}{3600\ s})\) = 10 m/s

t = time = 30 s

Therefore,

\(a = \frac{30\ m/s - 10\ m/s}{30\ s}\)

a = 0.67 m/s²

Now, we will calculate the force applied by the engine:

F = ma

where,

F = force = ?

m = mass = 1100 kg

Therefore,

F = (1100 kg)(0.67 m/s²)

F = 733.3 N

Now, we will calculate the distance covered by the car by using the second equation of motion:

\(s = v_it+\frac{1}{2}at^2\\\\s = (10\ m/s)(30\ s)+\frac{1}{2} (0.67\ m/s^2)(30\ s)^2\)

s = 600 m

Now, the work done (W) by engine can be calculated as follows:

W = Fs

W = (733.3 N)(600 m)

W = 439998 J = 439.99 KJ

There are several common sources of incoming calls to the physician's office. One of the most common sources is patients calling to schedule appointments, request prescription refills or ask for test results. Additionally, family members or caregivers may call on behalf of the patient to discuss their medical condition or to request information about their treatment plan.

Another source of incoming calls is other healthcare providers such as hospitals, pharmacies or other medical practices seeking to coordinate care or discuss patient referrals. Insurance companies may also call to verify coverage or to obtain additional information needed for claims processing.

Finally, the physician's office may receive calls from vendors or suppliers related to medical equipment or supplies. Additionally, community members may call seeking general health information or to inquire about the physician's services.

In summary, all of the options listed are common sources of incoming calls to the physician's office. It is important for healthcare providers to have a well-established system in place to handle incoming calls and ensure that patient needs are addressed in a timely and efficient manner.

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Answer:

This means the jet speed after 19s will be 587.9 m/s

Explanation:

each second the speed increases in 23.1 m/s, doing that for 19 seconds:

23.1 * 19 = 438.9 (do this math)

149 + 438.9 = 587.9 (do this math)

Answer:

F = 0.667 N

Explanation:

Given that,

Masses of two objects, m₁ = m₂ = 1,000,000 kg

The distance between masses, d = 10 m

We need to find the force of gravity between two objects. The formula for the gravitational force is given by :

\(F=G\dfrac{m_1m_2}{d^2}\\\\F=6.67\times 10^{-11}\times \dfrac{(1,000,000)^2}{10^2}\\\\=0.667 N\)

So, the force of gravity between two masses is 0.667 N.

Answer:By turning the electrical current off

Explanation:Trust me I took the test

Answer:

d) By turning the electrical current off

Explanation:

this is the only one that fits this situation because all of the other answers help improve the magnetic field.

Explanation: Anything at home that moves is an example of kinetic energy. This could be a cue ball rolling on a billiards table, a fan circulating air on a warm day, or glass shattering on the floor after it falls from the counter. Electrical devices that are turned on use kinetic energy as do people moving about the house.

Precursors are the building blocks or the starting materials that the body uses to synthesize neurotransmitters. The correct answer is 5. precursor.

Neurotransmitters are chemical messengers that transmit signals between nerve cells in the brain and the rest of the body.

Here,
Precursors are the building blocks or the starting materials that the body uses to synthesize neurotransmitters. The process of neurotransmitter synthesis involves a series of enzymatic reactions, where precursors are transformed into neurotransmitters and stored in synaptic vesicles.

When a nerve impulse reaches the end of a neuron, the synaptic vesicles release the neurotransmitters into the synaptic cleft, where they bind to receptors on the postsynaptic neuron and transmit the signal. The neurotransmitter molecules are then either reabsorbed by the presynaptic neuron or broken down by enzymes, such as those involved in neurotransmitter degradation.

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