The voltage across the terminals of a 9.0V battery is 8.3V when the battery is connected to a 60? load.
What is the battery's internal resistance?

The strength of the magnetic field at the center of the solenoid is 0.006 T

The strength of the magnetic field at the center of a solenoid is given by:

B = μ₀ * n * I

where B is the magnetic field strength, μ₀ is the permeability of free space, n is the number of turns per unit length of the solenoid, and I is the current flowing through the solenoid.

In this case, the length of the solenoid is not given, but we can assume that it is much greater than the diameter of the solenoid, so we can treat it as a long solenoid. The number of turns per unit length is given as 200 loops divided by the length of 6.5 cm, or:

n = 200 / 0.065 m = 3076.92 turns/m

The current flowing through the solenoid is 5 A.

The permeability of free space, μ₀, is a constant with a value of 4π x 10^-7 T m/A.

Therefore, the magnetic field strength at the center of the solenoid is:

B = μ₀ * n * I

= 4π x 10^-7 T m/A * 3076.92 turns/m * 5 A

= 0.006 T

So the strength of the magnetic field at the center of the solenoid is 0.006 T. The north pole of the solenoid is the end from which the magnetic field emerges, and the south pole is the end where it enters.

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Answer:

So let's first start with the base which is a rectangle remember that the formula to solve the area

Explanation:

Answer:

While weight training will improve muscle strength and mass, the potential of a body to develop muscle is limited in part by genetic factors that are out of an individual's control.

Explanation:

Answer:

While weight training will improve muscle strength and mass, the potential of a body to develop muscle is limited in part by genetic factors that are out of an individual's control.

Explanation:

Got it right on Edge

Answer:

6.67

Explanation:

force=mass*gravity(10)

666/10=66.6

777/66.6=11.6666667

round off

Answer:

B. 2 m/s

Explanation:

With all collisions, momentum is conserved. This is known as the Conservation of Momentum.

To find the momentum of an object, multiply its mass by its velocity.

\(m_yv_y+m_ov_o=(m_y+m_o)v_f\), solving for vf

Plugging in numbers, we get:

\(100\cdot 8 + 200(-1)=(100+200)v_f\)

\(300v_f=600,\\v_f=\boxed{2\text{ m/s}}\)

This is not a characteristic of the four Jovian planets in our solar system: That they are higher in average density than the terrestrial planets.

Unlike the terrestrial planets of inner solar system (Mercury, Venus, Earth, and Mars), Jovian planets do not have solid surfaces.

They are also less dense than terrestrial planets and are composed of gases. They have many moons and their mass gives them more gravitational pull. They also have rings.

Characteristics of the Jovian Planet are : They all are gaseous bodies, they have ring systems around them and also they have a large number of natural satellites.

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Explanation:

120+ 120 = 240 miles divided 1 hours 20 seconds

Answer:

54 N

Explanation:

a= v/t

3÷5/3= 1.8 m/s^2

f=ma

1.8 x 60 = 108/2 = 54 N

The work done against the braking force is the change in the kinetic energy of the skater is 54 N.

Work is said to be done whenever a force moves an object over a distance.

\(W = F = ma\)

where

Acceleration is given by

\(a = v/t\)

\(a = \frac{3}{5/3}\)

\(a = 1.8 m/s^2\)

Work is

\(W = ma\)

\(W = 60*1.8 m/s^2\)

\(W = 54 N\)

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Answer:

well they make the siren go beacaus eyou are doing somthing wrong so what were you thinking

Explanation:

Answer:

Convection

Explanation:

The method of heat transfer that occurs when particles move through a fluid is called convection.

Conduction is where heat is transferred from one substance to another through direct contact.

Thermal energy is the amount of heat that a substance has.

I hope this helps!

The copper wire a better conductor of electricity than carbon fiber because copper (Cu) is a metal, and only metals can conduct electricity option - B is correct answer.

A metal has greater electrical conductivity the lower its resistivity level. And copper wire is an excellent electrical conductor because it has a low level of resistivity. Incredibly flexible is another quality of copper.

Carbon fiber still does not conduct electricity as well as metal, even after being treated with other materials. Though still about 100 times faster than carbon fiber treated with good electricity conductors, metals like silver, aluminum, and copper are particularly good at conducting electricity.

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Answer:

1. The electrons in copper (Cu) are loosely bound to the nucleus. (C.)

2. An electrical current that flows in one direction (D.)

3. aluminum (Al) (D.)

4. Opposite charges attract one another. (D.)

5. Atoms with a nearly empty valence shell make good conductors. (C.)

Explanation:

I did the Connections Academy test (Conductors and Insulators Quick Check)

Answer:

What are your answer choices?

Explanation:

Work is like if you are a police officer you take down enemies. Force is like if you use a negatively charged balloon next to an uncharged piece of paper, they balloon would attract each other.

Hope this helps :D

A softer landing occurs when a falling object bounces from a surface. This is a common occurrence when an object with some degree of elasticity is dropped.

When it strikes a surface, the object's kinetic energy is transformed into potential energy. When it bounces back, some of that potential energy is transformed back into kinetic energy, resulting in a bounceback.A softer landing occurs when a falling object bounces from a surface due to elasticity.

For instance, when a ball is dropped, it hits the ground, and a softer landing occurs when the ball bounces from the ground, causing it to absorb less impact than if it had just hit the ground. Soft landings can happen when a surface is made of a soft or elastic material that can deform and absorb some of the impact, reducing the force of the landing.A ball with more elasticity will bounce higher than a ball with less elasticity.

This is due to the fact that a ball with higher elasticity will rebound with more kinetic energy, resulting in a higher bounce. A softer landing can also occur if the surface that the object lands on is cushioned or padded, such as when a person jumps onto a foam mat.

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The timing and magnitude of discharge peaks in the upper parts of drainage basins, or headwaters, and the lower parts of drainage basins, near the mouth, following a precipitation event can differ significantly. In the headwaters, the discharge peak is usually shorter in duration and higher in magnitude, while in the lower parts of the basin, the peak is typically longer in duration but lower in magnitude.

This difference occurs because water takes longer to travel down the drainage basin from the headwaters to the lower parts, allowing for more water to accumulate and be released at a later time. Additionally, the headwaters of a drainage basin tend to have steeper slopes, resulting in faster runoff and a more rapid response to precipitation events.

In contrast, the lower parts of a drainage basin have flatter slopes and larger channel sizes, allowing for greater storage of water and a more gradual release of flow. Overall, these differences in timing and magnitude of discharge peaks are influenced by the physical characteristics of the drainage basin, such as slope, channel size, and vegetation cover.

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The dot product is 25, the angle is \(\theta = cos^{-1} \frac{25}{\sqrt{35} \times \sqrt{21}}\), the cross product is 1i + (-6)j + (-7)k, and the area of the parallelogram spanned by vectors A and B is \(\sqrt{86}\).

Given,

A = 5i + 3j + k

B = 4i + j + 2k

i. Dot Product (A · B):

The dot product of two vectors A and B is given by the sum of the products of their corresponding components.

\(A.B = (A_x \times B_x) + (A_y \times B_y) + (A_z \times B_z)\\A.B = (5 \times 4) + (3 \times 1) + (1 \times 2) \\= 20 + 3 + 2 \\= 25\)

ii. Angle between vectors A and B:

The angle between two vectors A and B can be calculated using the dot product and the magnitudes of the vectors.

\(cos\theta = (A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} ((A.B) / (|A| \times |B|))\\A = \sqrt{(5^2 + 3^2 + 1^2)} =\\ \sqrt{35}\\B = \sqrt{(4^2 + 1^2 + 2^2)} \\= \sqrt{21}cos\theta = \frac{(A.B) / (|A| \times |B|)\\\theta = \frac{1}{cos} \frac{25}{\sqrt{35} \times \sqrt{21}}}\)

iv. Cross Product (A × B):

The cross product of two vectors A and B is a vector that is perpendicular to both A and B and its magnitude is equal to the area of the parallelogram spanned by A and B.

\(A\times B = (A_y \timesB_z - A_z \timesB_y)i + (A_z \timesB_x - A_x \timesB_z)j + (A_x \times B_y - A_y \times B_x)k\\A\times B = ((3 \times 2) - (1 \times 1))i + ((1 \times 4) - (5 \times 2))j + ((5 \times 1) - (3 \times 4))k\\= 1i + (-6)j + (-7)k\)

Area of the parallelogram spanned by vectors A and B:

The magnitude of the cross product A × B gives us the area of the parallelogram spanned by A and B.

Area = |A × B|

Area of the parallelogram spanned by vectors A and B:

Area = |A × B| =

\(\sqrt{(1^2 + (-6)^2 + (-7)^2}\\\sqrt{1+36+49\\\\\sqrt{86}\)

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Answer:

D, would be your answer.

Explanation:

Counter claim is what you do when you try and think for the refutable facts on your argument, and then build your argument from there in order for it to be stronger, this can help you find flaws in your argument, it will also help you make connections between your claim and your reasons, thinking in the counterclaim can help you strengthen your claim and argument because it will make you look for flaws in the reasoning and in the claim.

elasticity stretches and can also return to it's normal size ..

Answer:

Explanation:

Radius of first spherical ball =

2

2

​

cm=1cm

Radius of second spherical ball =

2

2

3

14.5

​

​

cm=

3

14.5

​

cm

Let the radius of the third ball be r cm.

Radius of the main spherical ball =

2

5

​

cm=2.5cm

Volume of main spherical ball = Volume of spherical ball  1+Volume of spherical ball 2+ Volume of spherical ball 3

Volume of a sphere =

3

4

​

πr

3

So,  

3

4

​

π×2.5

3

=

3

4

​

π1

3

+

3

4

​

π(

3

14.5

​

)

3

+

3

4

​

πr

3

⇒2.5

3

=1

3

+(

3

14.5

​

)

3

+r

3

⇒r

3

=15.625−1−14.5

⇒r

3

=0.125=0.5×0.5×0.5

⇒r=0.5

Answer:

chemical change

Explanation:

The product among alcohol, gasoline, travel souvenirs, cigarettes that will have elastic demand is cigarettes.

Elastic demand refers to a situation in which a change in the price of a good or service results in a more significant change in the amount demanded. When the percentage change in quantity demanded is greater than the percentage change in price, the demand for the product is said to be elastic.

When the quantity demanded of a product decreases significantly when the price rises, the demand for the product is said to be elastic. Similarly, when a slight change in price causes a significant change in quantity demanded, the demand is said to be elastic. Conversely, if a product's price increases by a small percentage, and the demand for the product decreases by a smaller percentage, the demand for the product is said to be inelastic.

Cigarettes, of all the products listed above, are likely to have an elastic demand.

This is because smokers who are addicted to cigarettes are more likely to quit smoking or reduce their consumption in response to an increase in the price of cigarettes compared to the other goods.

Thus, a slight increase in the price of cigarettes is likely to cause a significant decrease in the number of cigarettes consumed.

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The main cause of the spreading movement of the ocean crust is the new magma forming at ocean ridges, which pushes the oceanic plates apart. The other options listed do not contribute equally or directly to the spreading movement.

The spreading movement of the ocean crust is primarily driven by the formation of new magma at ocean ridges. As the mantle material beneath the Earth's surface rises and melts, it creates new magma. This molten material then pushes its way upward and fills the gap between the separating oceanic plates. As the new magma solidifies, it forms a new crust, expanding the ocean floor and causing the plates to move apart.

The other options listed do not directly contribute to the spreading movement of the ocean crust. Increasing temperatures at the top of the asthenosphere, the greater water content in subducted oceanic crust, decreasing pressure as the overlying crust thins, and higher viscosity as the silica content increases may have their own geological implications, but they are not the main causes of the spreading movement observed at ocean ridges.

Therefore, the correct answer is B. The new magma forming at ocean ridges is the main cause of the spreading movement of the ocean crust.

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The complete question is:

What is the main cause of the spreading movement of the ocean crust? A. As the ocean crust cools it becomes denser than the asthenosphere and the edge of the slab is pulled downward at subduction zones. B. The convection current of the asthenosphere is dragging the ocean crust C. The new magma forming at ocean ridges is pushing the ocean crust D. There is a shearing motion on transform plate boundaries E. All of the above contribute equally

Answer:

Potassium and iodine

Explanation: I took the quick check

Answer:

Explanation:

It is given that five cells of 2V are connected in series, so total voltage of the battery:

\(\dashrightarrow \: \: \sf V = 2 \times 5 = 10 V \)

Three resistor of 5\(\Omega\), 10\(\Omega\), 15\(\Omega\) are connected in Series, so the net resistance:

\(\dashrightarrow \: \: \sf R_{n} = R_{1} + R_{2} + R_{3}\)

\(\dashrightarrow \: \: \sf R = 5 + 10 + 15 \)

\({ \pink{\dashrightarrow \sf \: \: { \underbrace{R = 30 \: \Omega}}}}\)

According to ohm's law:

\(\dashrightarrow \sf\: \: V = IR \)

\(\dashrightarrow \sf \: \: I = \dfrac{V}{R}\)

On substituting resultant voltage (V) as 10 V and resultant resistant, as 30 \({\pmb{\sf{\Omega}}}\) we get:

\(\dashrightarrow \sf \: \: I = \dfrac{10V}{30\Omega}\)

\({ \pink{\dashrightarrow \sf \: \: { \underbrace{I = 0.33 A}}}}\)

\(\therefore\)The electric current passing through the above circuit when the key is closed will be 0.33 A

Answer:

Resistance = 5 + 10 + 15 = 30

Explanation:

Current= 0.33 Amperes

We may infer that heat moves from the hottest item to the coldest one from the definition of the first law of thermodynamics.

What is inside a refrigerator is a refrigerant that is moving through a few heat exchangers while being propelled by pumps. This allows heat to be exchanged between a "Hot" tank and transported to a specific location before being ejected and returning to take in additional heat. In this manner, heat is transferred from a hot zone to a cold one by the refrigerant, and heat also enters the hot region. The heat from the interior flows outward because the heat extracted is higher than the heat of the medium.

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Answer:

A. Mountains on different continents match up.

Explanation:

Due to the drifting/ moving apart of the continents, land masses is split therefore in case of a mountain that split, it matches the other part in another continent.

The angle A between  \(a=4.0i+5.0j\) and \(b=-3.0i+4.0j\) using the dot product a · b = |a| |b| cos Θ is 75.58°.

To find the angle A between two vectors, we can use the dot product formula:

a · b = |a| |b| cos Θ

Given:

\(a=4.0i+5.0j\\b=-3.0i+4.0j\)

First, let's calculate the dot product of a and b:

a · b = (4.0 * -3.0) + (5.0 * 4.0)

= -12.0 + 20.0

= 8.0

Now, find the magnitudes of vectors a and b:

|a| = √(4.0² + 5.0²)

= √(16.0 + 25.0)

= √41.0

|b| = √((-3.0)² + 4.0²)

= √(9.0 + 16.0)

= √25.0

= 5.0

Now, we can substitute these values into the dot product formula to solve for the cosine of the angle:

8.0 = (√41.0)(5.0) cos Θ

cos Θ = 8.0 / (5.0√41.0)

cos Θ = 0.249

Θ = cos⁻¹(0.249)

Θ = 75.58°.

Therefore, the angle A between the vectors a and b is approximately  75.58 degrees.

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Spherical lens light refraction and the lens manufacturer's formula are the terms that need to be applied to the problem at hand. Use the lens MFG rule to get the fixed lens field of view and see if it is long or short in length.

Why use a spherical lens?

An optical lens with a contour that diverges light rays is called a spherical lens, also known as a singlet. One of the reasons spherical lenses are so popular is their ability to project images with varying aspect ratios onto the sensor.

What types of spherical lenses are there?

An optical device through which light rays converge/diverge before communicating. Thus, the two main categories of spherical lenses are convex or converging and concave or diverging

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