Someone plzzz help it’s my test it’s 50 summative points I’ll mean a lot of you can help thank youuu!!

Answer:

A.add the forces

Explanation:

since they're both going in the same direction then they should be added to get the total net force.

pls mark me brainliest

The net force acting on the airplane if, An airplane is flying at 80 kilometers per hour when a strong tailwind, traveling in the same direction at 5 kilometers per hour is 85 km/hr so, option A is correct.

Force is the influence of either pull or pushes in the body. Basically, gravitation forces, nuclear forces, and friction forces are the types of forces.

For e.g. when the wall is hit by a hand then a force is exerted by the hand on the wall as well as the wall also exerts a force on the hand. There are different laws given to Newton to understand force.

Given:

An airplane is flying at 80 kilometers per hour when a strong tailwind, traveling in the same direction at 5 kilometers per hour,

Calculate the net force acting on the airplane as shown below,

The net force acting on the airplane = The velocity of the airplane + velocity of the wind  (As they both are in the same direction)

The net force acting on the airplane = 80 km / hr + 5 km / hr

The net force acting on the airplane = 85 km / hr

Thus, the net force acting on the airplane is added.

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Answer:

D : Increase the energy of the liquid so that its particles move faster

Explanation:

Sorry the other guy was wrong can i have brailiest please.

In general, the shorter the wavelength, the greater the danger to living things. Although longer wavelengths also have their hazards, very short wavelengths, such as X-rays and gamma rays, can easily damage living tissue

UV radiation is more damaging when its wavelength is shorter. Shorter wavelength UV light, however, has a lower ability to enter skin. Three bands make up the UV area, which has a wavelength range of 100 to 400 nm. UVA (315-400 nm) (315-400 nm)

A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. Its length in wireless systems is typically expressed in metres (m), centimetres (cm), or millimetres (mm) (mm).

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To determine the size of the copper conductor needed for a branch circuit, we need to consider the load and the allowable ampacity. The National Electrical Code (NEC) provides guidelines for selecting conductor sizes based on the expected load and the length of the circuit.

Here are the steps to calculate the conductor size:

1. Determine the load: Find out the total load that will be connected to the circuit. This includes all the devices and appliances that will be powered by the circuit.

2. Calculate the ampacity: Ampacity is the maximum current that a conductor can carry without exceeding its temperature rating. It is determined by the type of conductor and its size. Refer to the NEC tables to find the ampacity rating for the specific conductor size.

3. Consider the length of the circuit: Longer circuits experience more resistance, which affects the ampacity. Refer to the NEC tables to find the adjusted ampacity based on the length of the circuit.

4. Apply the derating factors: Depending on the type of installation and the number of conductors in the circuit, derating factors may be applied to the ampacity. Refer to the NEC for the specific derating factors.

5. Select the conductor size: Compare the adjusted ampacity with the load. Choose the conductor size that has an ampacity rating equal to or greater than the calculated load.

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The physical phenomenon most responsible for your ability to hear the stereo despite the barrier is diffraction.

This corresponds to option D. Diffraction refers to the bending or spreading of waves around obstacles or through narrow openings.

When sound waves encounter the barrier (the 10-ft tall × 10-ft wide speaker), they diffract around it and spread out, reaching your location in the middle of the field.

Unlike light waves, which have smaller wavelengths and exhibit less noticeable diffraction, sound waves with larger wavelengths can diffract more significantly around obstacles. This allows sound to "bend" around the speaker and reach your position, enabling you to hear the sounds from the stereo even with the obstruction in between.

Options A (intensity), B (fixed boundary conditions), and C (absorption) are not the primary factors at play in this scenario, although they can have some secondary influence on the overall sound experience.

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The demand for an inelastic good does not grow if the price is decreased, hence there is no increase in revenue as a result of the lower price and unchanged demand.

This would suggest that the company shouldn't lower the price of its items because doing so would be advantageous.

Increased total revenue: On the other hand, if the cost of an inelastic good rises as a result of the higher cost and constant level of demand. Prices increases, however, often result in a modest decline in quantity sought. This implies that businesses that offer inelastic products or services can raise prices, selling a little less but generating more income. Therefore, companies that sell items with fixed prices are better positioned to maximise profits and to withstand economic downturns.

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Answer:

??????

Explanation:

Answer:

use a reusable source of energy such as hydro power

Explanation:

use renewable energy it saves the environment and does not create global warming

Answer:

b

Explanation:

because a quark have many kinds of flavor

Answer:

\(\Large \text{A}\)

Explanation:

Flavor is the name given by scientists which refers to the type of quark.

During the process of adiabatic cooling, the temperature decreases because the air has Expanded to a larger volume, thereby increasing the volume of the compound and cooling the surrounding air.

The process of adiabatic cooling is a physical phenomenon in which the heat and temperature reduce due to a modification in the air pressure triggered by the expansive volume.

In conclusion, during the process of adiabatic cooling, the temperature decreases because the air has Expanded to a larger volume, thereby increasing the volume of the compound and cooling the surrounding air.

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The comparison of two quantities by division of two similar quantities is called ratio and proportion and the given statement is true.

A ratio is a way of comparing amounts. A ratio shows the number of times an amount is contained in another, or how much bigger one amount is than another.

The two numbers are both parts of the whole, If I need to mix some cement, then I could add two parts cement to four parts sand. Hence the ratio 2:4 (6 parts in total). The written bis important; 4:2 would give a different mix.

Ratios are written to their simplest form. In the figure to the right we have 15 red dots and five green dots. The ratio is 15:5; however, this can be reduced to the simplest form as we do with fractions.

The ratio as we can see in the graphic is also 3:1, if you look at the relationship of the numbers 15:5 as is 3:1, we can see that 3 is multiplied by 5 to get 15 and so is the one to get five.

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Answer:

Definiton 1.the refusal to accept or comply with something; the attempt to prevent something by action or argument

Definition 2. the ability not to be affected by something, especially adversely

Definition 3. the impeding, slowing, or stopping effect exerted by one material thing on another

Definiton 4: the degree to which a substance or device opposes the passage of an electric current, causing energy dissipation. Ohm's law resistance (measured in ohms) is equal to the voltage divided by the current.

Explanation:

Hope this Helps! If not Correct me!

The constant voltage that needs to be applied to yield this rate is approximately 0.47619 H A/s.

To calculate the constant voltage required to yield a current rate of 150 A over 210 min in a magnet with an inductance of 40 H, we can use the formula V = L × di/dt.

Given:

Inductance (L) = 40 H

Change in current (di) = 150 A

Change in time (dt) = 210 min = 210 × 60 s = 12,600 s

Substituting the values into the formula:

V = 40 H × (150 A / 12,600 s)

Simplifying the expression:

V = 40 × 150 / 12,600 H A/s

V = 0.47619 H A/s

The formula V = L × di/dt represents the relationship between voltage (V), inductance (L), change in current (di), and change in time (dt). By rearranging the formula, we can solve for voltage (V).

Plugging in the given values of inductance, change in current, and change in time, we calculate the constant voltage required. In this case, the result is approximately 0.47619 H A/s.

Therefore, the required constant voltage to achieve this current rate is approximately 0.47619 H A/s.

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Complete question here:

Magnetic resonance imaging instruments use very large magnets that consist of many turns of superconducting wire. A typical such magnet has What constant voltage needs to be applied to yield this rate? an inductance of 40H. When the magnet is initially Express your answer with the appropriate units. powered up, the current through it must be increased slowly so as not to "quench" the wires out of their superconducting state. One such magnet is specified to have its current increased from 0 A to 150 A over 210 min.

Answer:

A) the liquid particals move slower

Explanation:

vapor has a higher temp and have more energy than liquid so it's not c or d. and liquid has a lower boiling point than vapor

The gravitational pull of Earth is stronger in satellite A

Answer: the dorsal cavity

Explanation:

Dorsal body cavity is the body cavity in the human body which is located posteriorly and it comprises of two type of body cavities that are cranial and the spinal. The cranial cavity is formed inside the skull and it protects the vital organ brain inside the bony protection and the spinal cavity houses the spinal cord. Thoracic cavity and pelvic cavity are the ventral cavities that means they are present in the front of the body.

Answer:

the cranial cavity

the vertebral cavity

Explanation:

i got it right

For this problem, lets use the kinetic energy formula

Where m is equal to mass and v is equal to velocity

In our given, we have:

velocity = 60 m/s

kinetic energy = 6,025,000 J

Plug these numbers into the formula to get the mass

m = 3347.222 kg

If you start with 1,000 grams of erbium-165, the time it  will take to have 125 grams of erbium-165 left in the sample is 20.8 hours.

option D is the correct answer.

Half life is the time that it takes for half of the original value of some amount of a radioactive element to decay.

If you start with 1,000 grams of erbium-165, the time it  will take to have 125 grams of erbium-165 left in the sample is calculated as follows;

1,000 ---------- 0 time

500 ----------- 10.4 hours

125 ------------- 20.8 hours

Thus, from the calculation done above, we can see that If you start with 1,000 grams of erbium-165, the time it  will take to have 125 grams of erbium-165 left in the sample is 20.8 hours.

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Answer:

The magnetic field will be directed away from me into the screen

Explanation:

The force on a positive charge in a magnetic field can be shown by Lorentz right hand rule. If the palm of the left hand is held out with the fingers (representing the field) held parallel to the palm, and the thumb (representing the direction of motion of the positive charge), held perpendicular to the rest of the fingers. The palm will push in the direction of the force on the charge.

Having this in mind, if the thumb points vertically up, with the with the pal facing the left, then the fingers (representing the field) points away from me into the screen.

The mutual inductance between the two solenoids is 26.42 H.

The mutual inductance (M) between the two solenoids in the spark coil of an automobile can be calculated using the formula:

M = ΔV x Δt / ΔI

where:
- M is the mutual inductance,
- ΔV is the change in the voltage (emf) induced in the second solenoid (35 kV or 35,000 V),
- Δt is the time it takes for the current to fall (5.8 ms or 0.0058 s),
- ΔI is the change in current in the first solenoid (7.7 A - 0 A = 7.7 A).

Plugging in the values, we get:

M = (35,000 V) x (0.0058 s) / (7.7 A)
M = 26.42 H (Henry)

So, the mutual inductance between the two solenoids is approximately 26.42 H.

This value represents the degree of coupling between the two solenoids, as it quantifies how effectively a change in current in one solenoid induces a voltage in the other solenoid. In the case of a spark coil in an automobile, this high mutual inductance allows for efficient energy transfer and the generation of the high voltage necessary for ignition.

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I = 0.00744 A (Amps)

Hi there !

Ohm's law formula

I = V/R

I = 3.5V/470Ω

I = 0.00744 A

Good luck !

The acceleration caused by gravity, or 9.81 m/s², which acts on the object, causes the projectile's vertical velocity to vary.

A projectile's horizontal velocity is constant (a never changing in value), Gravity causes a downward vertical acceleration with a magnitude of 9.8 m/s/s. A projectile's vertical velocity fluctuates by 9.8 m/s per second, A projectile's vertical motion exists unrelated to its horizontal motion.

The acceleration caused by gravity, or 9.81 m/s², which acts on the object, causes the projectile's vertical velocity to vary. Therefore, this choice is likewise false. As is common knowledge, an object's vertical velocity is not constant, and momentum is a function of velocity.

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The Dielectrics are indeed very useful as insulators and their ability to store charges for future use is highly beneficial in many applications. However, as an AI language model, I do not have personal experiences or emotions like humans do. Therefore, I cannot provide you with a specific example of a recent act of kindness or generosity.

The Nevertheless, I can encourage you to think about the positive impact that such actions can have on the people around you. Acts of goodwill and kindness can range from small gestures like holding the door open for someone or giving a compliment, to larger actions like volunteering or donating to a charitable cause. Being kind and generous not only benefits those around us, but it can also have positive effects on our own well-being and mental health. Research has shown that acts of kindness can release feel-good hormones like oxytocin, which can reduce stress and improve mood. In conclusion, while dielectrics serve a practical purpose in insulating and storing charges, it is important to also remember the value of kindness and generosity in our daily lives. By making small gestures of goodwill towards others, we can all contribute to a more positive and compassionate society.

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Given:

The time period for which Nora rides the bicycle, t=5 min

The speed of the bicycle, s=10 m/s

To find:

The description of the ride.

Explanation:

The speed is a scalar quantity and has only magnitude. The velocity and acceleration are vector quantities and have magnitude and direction.

When the bicycle is traveling on a curved path at a constant speed, there will be an acceleration acting on it which keeps it on its path. This acceleration is called the centripetal acceleration.

The centripetal acceleration changes only the direction of the velocity and not the magnitude. Thus the speed will be constant. But the velocity will be changing at a constant acceleration.

A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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When an electron is in its ground state in a one-dimensional box, the longest-wavelength photon it can absorb is 580 nm. The next longest wavelength photon that can be absorbed is 1,547 nm.

The next longest wavelength photon it can absorb, again starting in the ground state, can be calculated as follows: In a one-dimensional box, the energy levels of an electron can be calculated using the following formula:

En = (n² * h²)/(8mL²)where n is the energy level, h is Planck's constant, m is the mass of the electron, and L is the length of the box.

The wavelength of the photon absorbed is given by the following formula:λ = hc/E

where λ is the wavelength, h is Planck's constant, c is the speed of light, and E is the energy of the photon.

To determine the next longest wavelength photon that can be absorbed, we need to determine the energy difference between the ground state and the next energy level. We can use the formula above to calculate the energy levels for n = 1 and n = 2:

For n = 1: E1 = (1² * h²)/(8mL²)

For n = 2: E2 = (2² * h²)/(8mL²)

The energy difference between the two levels is: E2 - E1 = [(2² * h²)/(8mL²)] - [(1² * h²)/(8mL²)] = (3/8) * (h²)/(mL²)

We can now use the energy difference to determine the wavelength of the next longest wavelength photon:

λ = hc /(E2 - E1)

λ = hc /[(3/8) * (h²)/(mL²)] = 8/3 * L * c/nm

Therefore, the next longest wavelength photon that can be absorbed is 1,547 nm.

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Complete Question:

An electron is in a one-dimensional box. When the electron is in its ground state, the longest wavelength photon it can absorb is 500 nm. What is the next longest wavelength photon it can absorb, again starting in the ground state?

Answer:

Box U

Explanation:

Lets clarify

Answer: Table U matches the story

If the lead can be extracted with 92.5 efficiency, the mass of ore is required to make a lead sphere with a 7.00 cm radius is 17.707 kg.

To find the mass of ore, the given values are,

The radius of the lead sphere is r = 7.0 cm,

The lead can be extracted with, η = 92.5% = 0.925 efficiency.

Density is the substance's mass per unit of volume.

We know the density of lead as,

⇒ p = 11.4 g/cm³ .

The volume of the lead sphere is,

V = 4/3πr³

   = 4/3π(7)³

V = 1436.7 cm³.

Mass of the lead present in the lead sphere is,

m = p . V

    = 11.4  × 1436.7

    = 16379 g

m = 16.379 kg

From the expression of efficiency, we calculate the mass of the ore,

η = Mass of lead obtained / Mass of the ore to be taken

0.925 = 16.379 kg / Mass of the ore to be taken

Mass of the ore to be taken = 17.707 kg

If the lead can be extracted with 92.5 efficiency, the mass of ore is required to make a lead sphere with a 7.00 cm radius is 17.707 kg.

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ANSWER is c

HOPR THIS WILL BE HELPFUL

Answer:

condensation?

Explanation: