Long, straight conductors with square cross section, each carrying current 1.2 amps, are laid side by side to form an infinite current sheet with current directed out of the plane of the page. A second infinite current sheet is a distance 3.6 cm below the first and is parallel to it. The second sheet carries current into the plane of the page. Each sheet has 200 conductors per cm. Calculate the magnitude of the net magnetic field midway between the two sheets.

Answer:

The correct answer is - 200000 J

Explanation:

We use the formula of kinetic energy:

The formula to calculate kinetic energy is,

Here,

Ec =1/2 x  m x v^2

The mass of the roller coaster is,  m  =  1000  k g

The speed of the roller coaster is, v = 20.0 m/s

 Therefore,

Ec=1/2 x 1000kg x (20m/s)^2 = 200.000Joule

200,000J

Answer:

C. Visible light

Explanation:

Visible light is responsible for the colors of objects.

Hope it will help :)❤

the charge of each cylinder given the following additional information about each one is 10434.445 coulomb, 14906.35 Coulomb, 178876.2 coulomb, 223,595.25 coulomb.

To solve this question we are to use the equation 1 below :

Charge Q = uniform charge density p × Total area of the cylinder A

From the question, we are given radius, R to be 2.33 cm and length, L to be 5.82 cm.

Calculate for the total area of the cylinder, A. equation 2

Total area of the cylinder, A = area of the top surface + area of the bottom + area of the curved surface of the cylinder.

Hence, total area of the cylinder A is;

πR^2 + πR^2 + 2πRL.

Then, total area of the cylinder A is;

(L + R)2πR.

find the charge of each cylinder equation 3

For the first cylinder; we have the uniform charge density to be 35 nC/m^2.

Therefore, the combination of equation (1) and (3) gives equation 4

Charge Q= p × (L + R)2πR

Hence,

Charge Q = 35 × [(5.82 + 2.33) 2× 3.143 × 5.82]

Charge Q = 10434.445 coulomb.

For the cylinder B, we have a uniform charge density of 50 nC/m^2.

Using equation (4),

charge Q =  p × (L + R)2πR

= 50 × [(5.82 + 2.33) 2× 3.143 × 5.82]

= 14906.35 Coulomb

For The cylinder C, the uniform charge density is 600, we use of equation (4);

Charge Q = 600 × 298.127

Charge Q = 178876.2 coulomb.

For cylinder D, the uniform charge density is 750 nC/m^2. use of equation (4)

Charge Q = 298.127 x 750

charge Q = 223,595.25 coulomb.

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Answer:

i hope this helps!

Explanation:

Artificial Insemination (AI) is an Assisted Reproductive Technology (ART) used worldwide to deposit stored semen directly into a cow or heifer's uterus. It is a tool for improving reproductive performance and genetic quality of livestock.

source: https://nwdistrict.ifas.ufl.edu/phag/2020/05/29/tips-for-successful-artificial-insemination-of-cattle/

Answer:

C - 5.3s

Explanation:

a = v - u / t

so,

t = v - u / a

t = 180 - 100 / 15

t = 5.3s

Answer:

Because no one is using that ball, so it is motionless

Answer:

No one is using the ball (dead ball) and therefore it is motionless and out of play

Explanation:

A Final statement or concluding statement

When constructing a climograph one needs to know the annual average temperature and wind speed.

A climograph is a graph that depicts an area's average (mean) precipitation and temperature.

It is used to compare the climate of various locations.

Climographs are made to compare climates in various locations.

Climographs simplify a large amount of numerical data into a simple  depiction of bars and lines.

Climographs are useful for observing trends in climate and comparing  climates in different locations since they are so basic.

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The momentum of the bike is 41kgm/s (option A).

Momentum is the tendency of a body to maintain its inertial motion i.e. the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

The momentum of an object can be calculated by multiplying the mass of the object by its velocity.

According to this question, a child with a mass of 25 kg is riding a bike with a mass of 6.3 kg with a velocity of 6.5 m/s.

Momentum of the bike = 6.3kg × 6.5m/s = 40.95kgm/s

Therefore, 41kgm/s is the momentum of the bike.

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Answer:

Work done = 80 gm/s

Explanation:

Given:

Final velocity (v) = 4 m/s

Initial velocity (u) = 0 m/s

Mass of ball (m) = 40 g

Find:

Work done.

Computation:

Using work energy rule

Work done = Change in kinetic energy

Work done = 1/2[mv-mu]

Work done = 1/2[(40)(4) - (40)(0)]

Work done = 1/2[(40)(4)]

Work done = 80 gm/s

Answer:

t = 20 s

Explanation:

145 m = 9 m/s × t – 35m

We can obtain the value of t in seconds by doing the following:

145 m = 9 m/s × t – 35m

Add 35 m to both side as shown below:

145 m + 35 m = 9 m/s × t – 35m + 35 m

180 m = 9 m/s × t

Divide both side by 9 m/s

t = 180 m / 9 m/s

t = 20 s

Therefore, the value of t is 20 seconds.

Between the value 400 nm and 700 nm there is an infinite amount of real values that can represent the length of a wavelength.

If we consider that each differente wavelength represents a different color, therefore there are infinite possible colors in the interval from 400 nm to 700 nm.

But if we consider only certain intervals of wavelength as certain colors, we can have for example 7 colors:

Violet, Indigo, Blue, Green, Yellow, Orange, Red.

Answer:

Take a look below

Explanation:

The time constant of a RC circuit is the time in which the current decreases to 37% of its initial value.

An RC circuit is a type of electrical circuit consisting of a resistor (R) and a capacitor (C) connected together. These circuits are used in a wide range of applications, including filters, oscillators, and timing circuits. In an RC circuit, the capacitor is charged and discharged through the resistor, creating a time-varying voltage across the capacitor. The time it takes for the capacitor to charge or discharge depends on the values of the resistor and capacitor, as well as the voltage of the power source.

The behavior of an RC circuit can be described by the time constant, which is equal to the product of the resistance and capacitance. This time constant determines how quickly the voltage across the capacitor will change in response to a change in the input voltage.

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Answer:

Chris lives farther from the school than Alex lives, and Chris walked to school at a faster rate than Alex walked.

Explanation:

To determine the fraction of the hose opening that was blocked, we can use the principle of conservation of mass. According to this principle, the mass flow rate of water should remain constant before and after blocking a fraction of the hose opening.

The mass flow rate of water is given by the equation:

Mass flow rate = density * cross-sectional area * velocity

Assuming the density of water remains constant, we can write:

Mass flow rate before blocking = Mass flow rate after blocking

The cross-sectional area of the hose opening is proportional to the square of its diameter. Let's assume that the fraction of the hose opening blocked is represented by 'x'.

Since the velocity of water before blocking is 'v' and after blocking is '4v', and the cross-sectional area is reduced by a fraction of 'x^2', we can write:

density * (1 - x^2) * v = density * 4^2 * v

Simplifying the equation, we get:

1 - x^2 = 16

x^2 = 1 - 16

x^2 = -15

Since we cannot have a negative value for 'x^2', it implies that the given scenario is not physically possible. The fraction of the hose opening blocked cannot be determined using the provided information

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According to the graph of displacement vs. time, the object's velocity is 0.02 m/s

The displacement is the shortest distance travelled by the particle. It is the vector quantity which re[presents both the magnitude and direction.

Velocity is the time rate of change of displacement with time.

Given is the displacement 0.2 m and time taken is 10s. So, the velocity is

v = 0.2/10

v = 0.02 m/s

Thus, the object's velocity is 0.02 m/s

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Answer:

200 (m) for 20 seconds

10 times 20 is 200

Answer:

200

Explanation:

Jill is running at 10 meters per second

20 * 10 = 200

Answer:

33.33Watts

Explanation:

Given parameters:

Work done  = 1000J

Time taken  = 30s

Unknown:

Power  = ?

Solution:

To solve this problem, we must understand that power is the rate at which work is done.

So;

       Power  = \(\frac{Work done }{time}\)  

Now insert the parameters:

 Power = \(\frac{1000}{30}\)     = 33.33Watts

The substance with the lowest specific heat capacity at 25 degrees Celsius is expected to be: b. iron.

The specific heat capacity of a substance is the amount of heat required to raise the temperature of one unit of mass of that substance by one degree Celsius. The specific heat capacity varies from substance to substance and is affected by factors such as temperature, pressure, and molecular structure.

At 25 degrees Celsius, the substance that is expected to have the lowest specific heat capacity is likely to be iron. Iron has a relatively high density and a crystalline structure, which makes it difficult for the atoms to vibrate and store heat energy. As a result, iron has a lower specific heat capacity compared to the other substances listed.

Air, methanol, and carbon dioxide are all gases at room temperature and have relatively low densities. They have higher specific heat capacities compared to iron because their molecules are more mobile and can store more heat energy through their vibrational and rotational modes.

Therefore, the correct answer is b. iron.

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For a box with a total surface area of 1.2 m2,  the thermal conductivity of the insulating material is mathematically given as

k=5.29*19^{-6} kcal/(s oC m)

Generally, the equation for the   is mathematically given as

P=Ka dT/L

Therefore

k=10*4*10^{-2}/1.2*1.5

k=5.29*19^{-6} kcal/(s oC m)

In conclusion, the thermal conductivity

k=5.29*19^{-6} kcal/(s oC m)

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Answer:

Volume, \(V=696.55\ \mu m^3\)

Explanation:

Given that,

The diameter of a human cell is 11 μm

It is enclosed by a membrane that is 4,4 nm thick.

We need to find the volume of the cell. The cell is spherical in shape. The volume of a sphere is given by the formula as follows :

\(V=\dfrac{4}{3}\pi r^3\)

r is the radius of the sphere, r = 5.5 μm

So,

\(V=\dfrac{4}{3}\times 3.14\times (5.5)^3\\\\V=696.55\ \mu m^3\)

So, the volume of the cell is \(696.55\ \mu m^3\).

Answer:

Mass = 2734.875 kg

Explanation:

Given that A water holding tank measures 85 m long, 55 m wide, and 9 m deep.

The volume = 85 × 55 × 9 =

= 42075 m^3

Traces of mercury have been found in the tank, with a concen- tration of 65 mg/L.

1 m^3 = 1000 L

Convert cubic meters to litres.

42075 × 1000 = 42075000 L

From definition of density,

Density = mass ÷ volume.

Substitute the given density and the calculated density into the formula

65 = mass ÷ 42075000

Cross multiply

Mass = 65 × 42075000

Mass = 2734875000 mg

Convert mg to kg

To do that, you will divide the answer by 1000000

2734875000 ÷ 1000000

= 2734.875 kg

In general, metals are excellent conductors, allowing current to flow freely. Insulators are substances that make current flow difficult.

a substance with a conductivity so low that very little current can flow through it. insulation in the form of a unit, frequently made of glass or porcelain, intended to support and electrically isolate a charged wire.

While current and electron flow within the same direction, they do so in opposite directions. Electrons move from a negative potential to a positive potential, and vice versa. The number of electrons that flow through a conductor's cross section in a second is used to calculate current.

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First, let's calculate the rocket velocity when it stops accelerating, using Torricelli's equation:

After the engine stops, the total acceleration will be the gravity acceleration, with a downwards direction and magnitude of 9.81 m/s².

The maximum height occurs when the velocity is zero, so we can use the formula below:

Now we need to calculate the time spent accelerating (engine turned on):

Therefore the total time, since lift-off until maximum height, is:

The rocket reaches the maximum height 11.12 seconds after lift-off.

For weightless object, gravity is equal to centripetal acceleration. The radius of the loop is calculated as 8 km.

The property of the motion of an object traversing a circular path is known as centripetal acceleration. Any object that is moving in circle and has an acceleration vector pointed towards center of that circle is Centripetal acceleration.

As Centripetal Acceleration formula is;

a = v²/r

Given, V-  velocity =  280 m/s

And we know that for weightless object,

Gravity =  centripetal acceleration

So, a =  g

given, g =9.8 m/s²

So,9.8 = 280²/r

r= 8000 m

Radius of the loop = 8 km

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Explanation:

C. Both energy and matter

Coupling occurs when the energy released by an exergonic reaction is used to drive an endergonic reaction.

Answer:

I would measure the distance between points A and B