. The 4.00 A current through a 7.50 mH inductor is switched off in 8.33 ms. What is the emf induced opposing this

Explanation:

she human activity for

Answer:

a moving car

Explanation:

a body remains in its constant state unless un extenal force is applied.

Answer:

The right answer is "thermal energy" or "thermal" or "heat" or "heat energy" or "electricity" or "electrical energy"

Explanation:

Nuclear fuel is used to heat water, increasing its thermal energy. This hot water is used to turn turbines that generate electrical energy.

Nuclear power stations convert the nuclear energy stored in nuclear fuel into thermal energy.

Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy.It has 3 types conduction, convection and radiation.

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The critical angles for red (660 nm) and blue (470 nm) light in flint glass surrounded by air differ by approximately 0.5 degrees.

The critical angle is the angle of incidence at which light transitions from being refracted to being totally internally reflected. It can be calculated using Snell's law and the formula for the critical angle:

θc = arcsin(n2/n1)

where θc is the critical angle, n1 is the refractive index of the medium the light is coming from (air in this case), and n2 is the refractive index of the medium the light is entering (flint glass in this case).

For red light (660 nm), the refractive index of flint glass is typically around 1.66, while for blue light (470 nm), the refractive index is around 1.69. Substituting these values into the formula, we can calculate the critical angles:

For red light:

θc_red = arcsin(1/1.66) ≈ 36.76 degrees

For blue light:

θc_blue = arcsin(1/1.69) ≈ 36.24 degrees

Therefore, the difference between these two angles is approximately 0.5 degrees.

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The drift velocity (v) of charge carriers in a conductor is given by the following equation: v = I / (n \(\times\) A \(\times\) q).

v = I / (n \(\times\) A \(\times\) q)

where:

v is the drift velocity, measured in meters per second (m/s)

I is the current flowing through the conductor, measured in amperes (A)

n is the number of charge carriers per unit volume of the conductor, measured in per cubic meter (\(m^(-3)\))

A is the cross-sectional area of the conductor, measured in square meters (m^2)

q is the charge of a single carrier, such as an electron, measured in coulombs (C)

This equation relates the drift velocity of the charge carriers to the current flowing through the conductor, the number of charge carriers per unit volume, the cross-sectional area of the conductor, and the charge of a single carrier. The drift velocity represents the average velocity of the charge carriers as they move through the conductor in response to an applied electric field.

The number of charge carriers per unit volume (n) depends on the material of the conductor and the temperature. In metals, the charge carriers are typically electrons, and the number density is on the order of 10^28 to 10^29 electrons per cubic meter.

The cross-sectional area (A) of the conductor is the area of the cross-section of the conductor perpendicular to the direction of the current flow, and is a measure of the amount of material available for the charge carriers to move through.

The charge of a single carrier (q) is typically the charge of an electron, which is approximately 1.6 x \(10^{-19\) coulombs.

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The predicted frequency of defective calculators can be calculated using the formula:

Predicted Frequency = (Probability of Defect) x (Total Number of Calculators)

In this case, the company claimed a probability of 1% per 1000 calculators. Therefore, the probability of a defective calculator is 0.01 (1% expressed as a decimal).

The total number of calculators tested by Gustavo was 1000.

Substituting these values into the formula, we have:

Predicted Frequency = 0.01 x 1000 = 10

The predicted frequency of defective calculators is 10. This means that, according to the company's claim of a 1% probability, it was expected that out of 1000 calculators, approximately 10 of them would be defective. However, Gustavo found 15 defective calculators, which indicates a slightly higher rate of defects compared to the company's prediction.

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Answer:

38 hope this helps

Explanation:

18 + 20 = 38

The velocity of the ball is 16.9 m/s at 0.53 seconds. The given velocity of 17 m/s is the moving/change in velocity and 0.53 seconds is the given time.

to find the velocity let's 1st find out the acceleration using the formula

a = Change in velocity/time

a = 32.07 m/s²

Velocity = acceleration X Time

Velociy = 32.07 X 0.53

= 16.99 m/s

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Answer:

force is a push or pull that exerted on a body

Answer:

force is that push or pull on a body that changes or tends to change the state of rest or of uniform motion in a straight line.

Explanation:

hope this helps

The mass of calcium phosphate the reaction can produce is 6.076 grams.

Mass is a numerical measure of inertia, which is a basic feature of all matter. It is, in effect, a body of matter's resistance to a change in speed or position caused by the application of a force.

In the International System of Units (SI), the kilogram is the unit of mass.

Given;

Mass of calcium nitrate (Ca(NO₃)₂) = 96.1 g

Mass of calcium phosphate=?

The chemical equation is found as;

3Ca(NO₃)₂ + 2Na₃PO₄ → 6NaNO₃ + Ca₃(PO4)₂

3 moles of Ca(NO₃)₂ produces 1 mole of Ca₃(PO4)molar mass of calcium phosphate is 164 g/mol

Moles are found as the ratio of the mass of the compound and its molar mass. Moles of Ca(NO₃)₂ is n.

n = 96.1/164 = 0.5859 moles

Moles of Ca3(PO4)2 produced ;

N=0.0589 ×(1/3) = 0.0196 moles

The molar mass of calcium phosphate is 310 g/mol and the mass of calcium phosphate produced will be;

M=0.0196×310

M = 6.076 g

Hence,the mass of calcium phosphate the reaction can produce is 6.076 grams.

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In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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The following information is provided in the problem: A sled with a weight of 19.7 kg is pulled with a force of 42.0 N at an angle of 43.0° across ground where μ₁ = 0.130. We need to find out the normal force that is exerted on the sled.

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Answer:

at the vertical change

Explanation:

i believe this is right

A. The momentum of an object is the same before and after a collision.

The word Momentum is defined as the product of the mass of a object and its velocity. Momentum is a vector quantity that is it has both magnitude and direction. Newton's second law of motion says that the time rate of change of momentum is equal to the force acting on the an object.

The conservation of momentum is defined as  within some problem area , the quantity of momentum stays constant; momentum is neither created nor destroyed, but just changes through the action of forces as mentioned by Newton's laws of motion.

So we can conclude that option A is the correct answer.

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The drag coefficient for a symmetric, diamond-shaped airfoil with a thickness to chord ratio, t/c, equal to 0.10 flying at Mach 3.5 in air (γ = 1.4) at 10 km at zero angle of attack is 0.056.

To compute the drag coefficient for a symmetric, diamond-shaped airfoil, we need to use the following formula:
CD = CD0 + K*CL^2
where CD is the drag coefficient, CD0 is the zero-lift drag coefficient, CL is the lift coefficient, and K is the induced drag factor.
To calculate CD0, we can use the following formula:
CD0 = (4*t/c)^2/(π*e*AR)
where e is the Oswald efficiency factor and AR is the aspect ratio. For a diamond-shaped airfoil, the aspect ratio is equal to 2. To estimate e, we can assume a value of 0.85 for a thin airfoil.
Thus, CD0 = (4*0.10)^2/(π*0.85*2) = 0.056
To calculate the lift coefficient, we can use the following formula:
CL = L/(0.5*rho*V^2*S)
where L is the lift force, rho is the air density, V is the air velocity, and S is the wing area. For a symmetric airfoil at zero angle of attack, we can assume that L = 0.
Thus, CL = 0
Finally, to calculate K, we need to use the following formula:
K = 1/(π*e*AR)
Thus, K = 1/(π*0.85*2) = 0.185
Putting it all together, we get:
CD = CD0 + K*CL^2 = 0.056 + 0.185*0^2 = 0.056
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Answer:

they are gas giants. they are much much more bigger then terrestrial

Answer:

You need to have a good stance, release, power, speed, body, movement, and aim. You should be able to throw an effective pass or throw by using your body and having the correct amount of balance and form

50.03

Explanation:

Yes ur answer is correct

The work done on the lever by the input force is 1 J. Similarly the work done by the output force is 3 J. Here the output is greater than the input work which is not possible since all the energy given to the system cannot be converted as work done.

Work done is the product of force and displacement. When a force applied on a body is resulted in a displacement, the force is said to be done  work on the body.

Work done is a vector quantity and is characterized by a magnitude and direction. The force applied on the lever have to be 10 N over a distance of 0.1 m.

then work done = F. ds

w = 10 N × 0.1 m = 1 J

The output force = 1 N

distance = 3 m

work done by the body = 1 N × 3 m = 3 J

It is generally impossible to generate a machine with an efficiency of 100%. Thus output work done cannot be greater than the input work.

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Answer:

1. You push on the ball and the ball pushes on your hand .

2. The ball hits the ground and the ground pushes back on the ball .

Explanation:

Answer:

A short circuit is an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the Thévenin equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion.

hope it helps.Please give me brainliest O:-)

Answer:

A short circuit is an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance.

The frequency of light when it reaches Earth is approximately 4.988 x 10^14 Hz.

Explanation:-

Given:

Emitted frequency of light, f = 5.000 x 10^14 Hz,

Speed of the galaxy receding from Earth, v_src = 4500 km/s.

We need to convert the speed of the galaxy from km/s to m/s:

v_src = 4500 km/s * (1000 m/km)

v_src = 4.5 x 10^6 m/s

Plugging the given values into the Doppler effect formula:

f' = (5.000 x 10^14 Hz) * (3.00 x 10^8 m/s + 0 m/s) / (3.00 x 10^8 m/s + 4.5 x 10^6 m/s)

Simplifying the expression:

f' = (5.000 x 10^14 Hz) * (3.00 x 10^8 m/s) / (3.00 x 10^8 m/s + 4.5 x 10^6 m/s)

f' ≈ 4.988 x 10^14 Hz

Therefore, the frequency of light when it reaches Earth is approximately 4.988 x 10^14 Hz.

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Explanation:

Generally, stream flows are measured in CFS   = Cubic Feet per Second

Explanation:

lighting converts heat energy.

hope you like this .

The correct statements of an electric field are: (a) Its electric potential energy increases as it goes from high to low potential. (d) Its kinetic energy decreases as it moves in the direction of the electric field.

(a) When an electron moves from a region of high electric potential to a region of low electric potential, its electric potential energy increases. This is because the electron experiences a change in potential energy due to the electric field. Moving in the direction of the electric field, the electron gains potential energy. (d) As the electron moves in the direction of the electric field, its kinetic energy decreases. This is because the electric field does work on the electron, converting its kinetic energy into potential energy. The electron loses kinetic energy as it accelerates in the direction of the field. (c) and (e) are incorrect statements. The potential energy and kinetic energy of the electron are not directly related in this context. While the electron's potential energy may change, its kinetic energy does not necessarily follow a predictable pattern solely based on the direction of the electric field.

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The action spectrum is broader than the absorption spectrum because the action spectrum represents the overall efficiency of photosynthesis, while the absorption spectrum only shows the wavelengths of light absorbed by pigments.

In the action spectrum, a wider range of wavelengths contributes to photosynthesis, as it takes into account the energy conversion process and the involvement of accessory pigments that can absorb different wavelengths and transfer energy to the main photosynthetic pigments.

This results in a broader action spectrum compared to the absorption spectrum.

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The coefficients in order are 2, 1, 1

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.

In other words, the mass and the charge are balanced on both sides of the reaction.

According to the given situation,

To balance the the chemical equation,

Step 1 - Add a 2 on the Na2HPO4:

2(Na₂HPO₄)  ⇒ Na4P₂O₇ + H₂O

Step 2 -Next take count of each element on both sides to see if the 2 is balanced or not:

On the left there are 4 Na, 2 H, 2 P, and 8 O

On the right there are 4 Na, 2 H, 2 P, and 8 O

Step 3 - Now we will divide by 2

i.e. 2 NA.H. P

The coefficient of  Na is 2 , Coefficient of H is 1 and Coefficient of P is 1

Therefore,

The coefficients in order are 2, 1, 1.

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Answer: 63.43 m

Explanation:

Given

Car lands 68.38 m away from the base of the garage

Stuntman drove the car with speed \(u=19\ m/s\)

Since there is no acceleration in the horizontal direction, so there is no change in velocity

\(\Rightarrow 68.38=19\times t\\\Rightarrow t=3.598\ s\)

time taken to cover 68.38 m is 3.598 s

In this time car travels a vertical distance of h

Such that we can write

\(\Rightarrow h=u_vt+\frac{1}{2}at^2\\\\\Rightarrow h=\frac{1}{2}gt^2\\\\\Rightarrow h=0.5\times 9.8\times (3.598)^2=63.43\ m\)

As per the given scenario, Ram will cross the river first.

Ram chooses the quickest route and crosses the river without turning. Ram and Hari can both swim in still water at the same speed, hence their respective speeds when crossing the river will be equivalent. Ram will be able to get to the opposing bank the fastest as a result.

Hari, on the other hand, is swimming upstream at an angle and is being dragged downstream by the water.

Hari's overall travel distance will increase due to the downstream current, however his effective speed will drop in comparison to the other bank. Hari will therefore take longer than Ram to get to the opposing bank.

Thus, Ram will cross the river first in this scenario.

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