bending moment is maximum where shear force passes through zero true or false

The magnetic field at a distance of 8 cm from the wire is 2 T.

The magnetic field at a distance of 8 cm from a straight wire can be determined using the formula for the magnetic field produced by a straight wire:

B = μ₀I / (2πr), where B is the magnetic field, μ₀ is the permeability of free space, I is the current in the wire, and r is the distance from the wire.

Given that the magnetic field is 4 T at a distance of 4 cm, we can first find the current in the wire:

4 T = μ₀I / (2π(0.04 m))

Now, we can use the same formula to find the magnetic field at a distance of 8 cm (0.08 m):

B = μ₀I / (2π(0.08 m))

Since the current in the wire is the same, we can notice that the only difference between the two equations is the distance (r). The relationship between the magnetic field and distance is inverse, so when the distance is doubled (from 0.04 m to 0.08 m), the magnetic field will be halved.

Therefore, the magnetic field at a distance of 8 cm from the wire is 4 T / 2 = 2 T.

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Answer:

This is your answer

Answer:

120 N

Explanation:

1 N = 1kg

120 N = 120kg

Hope this helps!

The current expected to measure when the heat strips are energized is 14.1A.

Current can be defined as the rate of flow of electric charge round a circuit.

To calculate the current that will be measured when the heat strips are energized, we use the formula below.

Formula:

Where:

Make I the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, the current expected to measure when the heat strips are energized is 14.1A.

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Answer:

Classical physics predicted that the light given off by an object as its temperature increased is that the energy of the light would increase from visible light into the ultraviolet range

Explanation:

The phenomena are referred to as Black body radiation. When a substance heats up, its electrons become excited. An electron will occasionally descend to a lower state and produce a photon. The frequency of emitted light increases with increasing temperature.

This is also how incandescent light bulbs operate. The majority of the light we see from stars is caused by black body radiation, and we may deduce the temperature of a star based on its hue. Plank's Law is the equation that gives the energy emitted as a function of frequency and temperature.

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Answer:

c

Explanation:

The amount of mass used up in holding a nucleus together the mass defect represent.

Thus, The term "mass defect" refers to the discrepancy between the actual atomic mass and the expected mass obtained by multiplying the mass of the protons and neutrons in the nucleus by a constant factor.

The anticipated mass obtained by combining the masses of the nucleons is less than the actual atomic mass. The binding energy that is produced when a nucleus forms accounts for this extra mass.

The mass defect is a result of some of the mass being converted to energy during the formation of a nucleus. The real mass of an atomic nucleus is therefore less than the mass of the constituent particles.

Thus,  The amount of mass used up in holding a nucleus together the mass defect represent.

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The optimal number of bran muffins to sell in a single package is 'a / b' and the optimal package price is '2.0 / b'.

The values of 'a' and 'b' can be determined from market research or historical data on demand for bran muffins.

To determine the optimal number of bran muffins to sell in a single package and the optimal package price, we need some additional information. Specifically, we need the demand function for the bran muffins.

Once we have the demand function, we can find the profit function and maximize it to find the optimal values. The profit function is given by:

Profit(q) = Revenue(q) - Cost(q)

To find the revenue function, we multiply the demand function by the price:

Revenue(q) = Price(q) * Demand(q)

Now let's assume that the demand function is linear, given by:

Demand(q) = a - b * q

where 'a' represents the intercept (maximum demand) and 'b' represents the slope (rate of decrease in demand as the price increases).

We can substitute the demand function into the revenue equation:

Revenue(q) = Price(q) * (a - b * q)

Now, we can calculate the profit function:

Profit(q) = Revenue(q) - Cost(q)

= Price(q) * (a - b * q) - c(q)

= Price(q) * a - Price(q) * b * q - c(q)

= Price(q) * a - Price(q) * b * q - 2.0q

To maximize profit, we take the derivative of the profit function with respect to 'q' and set it equal to zero:

d(Profit(q))/dq = -Price(q) * b - 2.0 = 0

Solving for Price(q):

Price(q) = 2.0 / b

Now, we substitute this value of Price(q) back into the demand equation to find the optimal quantity 'q':

a - b * q = 0

q = a / b

Therefore, the optimal number of bran muffins to sell in a single package is 'a / b' and the optimal package price is '2.0 / b'. The values of 'a' and 'b' can be determined from market research or historical data on demand for bran muffins.

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Answer:

Explanation:

The energy conservation is equal to half of the product of the spring constant and the square of displacement of the spring, so option C is correct.

A student walks 3 blocks south and 4 blocks west. The displacement of the student is 5 blocks SW.

Given that, the student walks 3 blocks south (AB) and then walks 4 blocks west (BC).

When we draw this on a paper, we find that we have drawn two sides of triangle. The displacement of the student would be the third side i.e, the hypotenuse of the triangle.

Applying Pythagoras theorem, we have

AB² + BC² = CA²

where, AB and BC are the two sides of the triangle

CA is the hypotenuse side of the triangle

From the above formula, CA = √(AB² + BC²)

Substituting in the formula, we have,

CA = √(3² + 4²) = √25 = 5

The hypotenuse side of the triangle is formed on the South-West side of the triangle.

Thus, the displacement is 5 blocks SW.

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The name for a hollow depression in which drainage collects is a basin or depression.

Drainage collection refers to the process of collecting and removing excess water or other liquids from a particular area or system.

The drainage collection process involves various techniques and methods, depending on the type of system and the amount and type of liquid being collected.

Effective drainage collection is important for preventing water damage, controlling erosion. So the name for a hollow depression in which drainage collects is a basin or depression.

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Answer:

I think its c) no unit

Explanation:

jus took test and got a 100

(a) The kinetic energy of the cart when it moves is 2/3 the way down is 1/3mgh.

(b) The total mechanical energy of the cart at the given height of 5 m is 5mg.

The potential energy of the cart when it is 2/3 way down the given height of 5 m is calculated as follows;

ΔP.E = mghf - mgh₀

ΔP.E = mg(hf - h₀)

ΔP.E = mg(2h/3 - h)

ΔP.E = -¹/₃mgh

ΔK.E = -ΔP.E

ΔK.E = ¹/₃mgh

M.A = P.E + K.E

M.A = ²/₃mgh + ¹/₃mgh

M.A = mgh

M.A = mg(5)

M.A = 5mg

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Explanation:

Acceleration = -2.25 meters per and time taken is 4meter second...

Answer:

c = λ f

Explanation:

In the electromagnetic spectrum, the wavelength and frequency of a specific radiation are related to the speed of the wave, which in this case the speed of light

         c = λ f

where c is the speed of light, λ the wavelength and f the frequency of radiation

Both caesium-137 and iodine-131 emit ionizing radiation, which can damage living tissue and increase the risk of cancer.

Isotopes are members of the same element's family but have variable numbers of neutrons despite having the same number of protons.

Iodine-131 and caesium-137 both produce ionizing radiation, which can harm living things and raise the risk of cancer.

Due to their varied half-lives and processes of decay, each isotope's danger has changed between 1986 and 2018 despite this.

Caesium-137 degrades gradually over time since it has a longer half-life of roughly 30 years. Iodine-131, on the other hand, degrades swiftly because of its significantly lower half-life of only around 8 days.

Thus, the risk has diminished over time as a result of radioactive decay.

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Within the visible spectrum, our experience of red is associated with a longer wavelength of light.

The electromagnetic spectrum is seen as colors: violet, indigo, blue, green, yellow, orange, and red.  Blue light has a very short wavelength, and so produces a higher amount of energy.

In the visible spectrum, the longer wavelengths that we perceive as red are followed by intermediate wavelengths for green and shorter wavelengths for blue and violet.

Our perception of red is connected to a longer wavelength of light within the visible spectrum.

Hence longer wavelength is the correct answer for blanks.

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Tango landed in a site of lower temperature while Foxtrot landed in a site of higher temperature.

Speed of sound increases with increase in temperature because air molecules acquires more kinetic energy which increases their rate of vibration.

From the information, the speed of sound picked by Foxtrot (258 m/s) is greater than the speed of sound picked by Tango (240 m/s).

We can conclude that, Tango landed in a site of lower temperature while Foxtrot landed in a site of higher temperature.

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Answer:

acceleration = v-u/ t

= 15-10/5

= 5/5

= 1 m/s2

Explanation:

hope this helped you.

Answer:

\(\boxed {\boxed {\sf 1 \ m/s^2}}\)

Explanation:

Acceleration is the change in velocity over the change in time. Therefore, the formula for calculating acceleration is:

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

Since the body's velocity increased from 10 meters per second to 15 meters per second 15 m/s is the final velocity and 10 m/s is the initial velocity. The time is 5 seconds.

\(a= \frac{ 15 \ m/s - 10 \ m/s}{5 \ s}\)

Solve the numerator.

\(a= \frac{ 5 \ m/s }{5 \ s}\)

Divide.

\(a= 1 \ m/s/s\)

\(a= 1 m/s^2\)

The acceleration is 1 meter per second squared.

The distance traveled by car with a constant speed of 20m/s is equal to 240m.

The speed of an object can be defined as the distance traveled by the object in a definite time interval. The speed is a scalar quantity as it carries only the magnitude and does not have any direction.

The speed can be calculated from the ratio of the distance traveled by the object to the time taken to cover that distance.

The speed equation for an object can be written as follows:

Speed = distance /time taken

Distance = Speed × time

Given, the speed of the car = 20 m/s

The total time taken by car to travel the distance = 12 sec

The distance traveled by car = 20 × 12 = 240 m.

Therefore, the car will travel a distance of 240 meters in a given time.

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this is your answer

- BRAINLIEST answerer ❤️

The magnitude of the rock's (assumed) uniform acceleration is v² - 225.

Initial speed, u = 15 m/s

Displacement, s = 50 cm = 0.5 m

Magnitude of acceleration, a = ?

We know, v² - u² = 2as

Let's substitute the given values into the above formula. v² - u² = 2as (v is the final velocity)

Final velocity, v = ?u = 15 m/s (Initial velocity)

s = 0.5 m (Displacement)

a = ?

v² - u² = 2as (v² - u²)/2s = a(v+u)/2(a = (v² - u²)/2s)

(a = (v² - u²)/2s)(a = (v² - (15 m/s)²)/2(0.5 m))(a = (v² - 225)/1)(a = v² - 225)

Therefore, the magnitude of the rock's  uniform acceleration is v² - 225, given that a rock hits the ground at a speed of 15 m/s and leaves a hold 50 cm deep after it hits the ground.

The magnitude of the rock's  uniform acceleration is v² - 225.

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Answer:

C

Explanation:

Z = 84, A = 218

trust, got a 100 :)

A phase change occurs when energy and pressure are added from a system. The phase most often found in nature are solid, liquid, and gas or vapor. Evaporation is the process by which liquid converts into vapor and it is also known as boiling. This happens at the boiling point of a liquid.

Evaporation is defined as the process by which liquid or water converts into the form of gas or vapor. A physical property is said to be the characteristic of a substance or compound that has been observed without any the change in the identity of that particular substance. The physical properties are considered as substance's  colour, hardness, density, and melting point as well as boiling points.

Evaporation is the process by which liquid converts into vapor and it is also known as boiling. This happens at the boiling point of a liquid.

Therefore, A phase change occurs when energy and pressure are added from a system. The phase most often found in nature are solid, liquid, and gas or vapor. Evaporation is the process by which liquid converts into vapor and it is also known as boiling. This happens at the boiling point of a liquid.

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Answer:

13

Explanation:

34

Answer:

One object has a large mass, and the objects are close together.

In this experiment, there may be some sources of error. The following are some possible sources of error:1. Variations in the position of the charges and the electrometer2. Power supply voltage may fluctuate3. The connecting wires of the circuit may have high resistance4.

Electromagnetic interference, such as from other electrical equipment The inaccuracies in this experiment are that they are sensitive to the positioning of the charges and electrometer, making them difficult to read. Power supply voltage may fluctuate, which would affect the measurements. The connecting wires of the circuit may have high resistance, which may also affect the measurements. Electromagnetic interference, such as from other electrical equipment, could also cause inaccuracies in the experiment. Coulomb's law in General Physics I explains why the force experienced by each charge is always the same. The force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Therefore, regardless of the charges' magnitudes, the force between them will always be the same.The graphs yielded a linear fit. That is what was predicted in the discussion.

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Identification of compounds can benefit from density. It is also a useful feature since it connects (or acts as a conversion factor between) a substance's mass and volume. Volume and mass are extended (or extrinsic) qualities of matter that are quantity dependent.

The force of an air mass acting on the earth's surface is known as atmospheric pressure. Remember that wind currents are created when the densities of two separate air masses differ.

Our wind currents are driven by the atmospheric pressure density, and denser air exerts a higher pressure than less dense air. Compared to the cold and dry air, the warm and humid air is less dense. The less dense air will then float on top of the thicker air in certain regions.

Therefore, Warm air masses rise while cold air masses descend because they are less dense.

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