What happens to a circuit's resistance (R), voltage (V), and current (I) when you increase the length of the wire in the circuit?


A. R is constant.
V increases.
I increases.

B. R increases.
V decreases.
I decreases.

C. R decreases.
V is constant.
I increases.

D. R increases.
V is constant.
I decreases.

Please be careful trying to find the answer here, there are 4 different versions of this same exact question.

The skater's final angular velocity is approximately 9.86 rad/s.

The skater's final angular velocity can be calculated using the principle of conservation of angular momentum. The equation for angular momentum is given by:

L = Iω

where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

Initially, the skater has an angular momentum of:

L_initial = I_initial * ω_initial

Substituting the given values:

L_initial = 2.12 kg m² * 3.25 rad/s

The skater's final angular momentum remains the same, as angular momentum is conserved:

L_final = L_initial

The final moment of inertia is given as 0.699 kg m². Therefore, the final angular velocity can be calculated as:

L_final = I_final * ω_final

0.699 kg m² * ω_final = 2.12 kg m² * 3.25 rad/s

Solving for ω_final:

ω_final = (2.12 kg m² * 3.25 rad/s) / 0.699 kg m²

Hence, the skater's final angular velocity is approximately 9.86 rad/s.

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To better understand crash dynamics we have to look at "the laws of motion."

The laws of motion

The laws of motion were introduced by Sir Isaac Newton in 1687 in his book Philosophiæ Naturalis Principia Mathematica ("Mathematical Principles of Natural Philosophy"), which defined the laws of motion, or three fundamental laws that govern the movement of bodies. The laws of motion, according to Newton, govern the motion of an object or a system of objects that interact.

It defines the concepts of force and mass, and the fundamental dynamics of motion.The following are the laws of motion:Every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. The velocity of an object changes proportional to the force applied to it, and the acceleration of an object is proportional to both its force and its mass. For every action, there is an equal and opposite reaction.

Therefore, these laws are necessary to fully grasp crash dynamics because they explain how objects respond to outside forces that cause them to accelerate or decelerate.

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Answer:

Really hope you get it!!

Answer:

Explanation:

m = 600 kg

vo = 15 m/s

vt = 30m/s

t = 10 s

F = ?

vt = vo + at

30 = 15 + a (10)

15 = 10a

a = 15/10 = 1.5 m/s²

F = m. a

F = 600 . 1.5

Answer:

The moon does not have an atmosphere because it does not have enough gravity to hold onto the gases that make up an atmosphere. The moon also does not have plate tectonic activity because it does not have enough internal heat to drive the movement of the plates.

Explanation:

Answer:

An electromagnetic wave can be created by accelerating charges; moving charges back and forth will produce oscillating electric and magnetic fields, and these travel at the speed of light.

Explanation:

Answer:

Sample Response:

The source of electromagnetic waves are charged particles that begin to oscillate when acted upon by a disturbance. These oscillating particles create an oscillating magnetic field. The oscillating magnetic field then creates an oscillating electric field, and an oscillating electric field in turn creates an oscillating magnetic field.

Answer:

12\(s^{-1}\)

Explanation:

Period= how long for each revolution

Since we have 10 revolutions in 120 seconds.

120/10=12s

The distance of the screen is 107.7 meter.

When two coherent light waves from separate sources collide, the energy distribution caused by the first wave is altered by the second. The term "interference of light" refers to this alteration in the distribution of light energy brought on by the superposition of two light waves.

Given that: wavelength of light: λ = 650 nm = 650×10⁻⁷ cm.

separation between two slits: d = 0.21 mm = 0.021 cm.

According to fig. separation between two bright fringe: x = 1/3 cm

Now, from x = λD/d we get:

separation  between the screen and the slits: D = xd/λ.

= (1/3× 0.021)/ 650×10⁻⁷ m

= 107.7 meter.

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Answer:

if its winter

Explanation:

then we know it will me cold

Answer:

18*10^10 meters

Explanation:

V= d/t         10 mins = 600 seconds

3*10^8 = d/600s

(3*10^8)*(6*10^2) = d

d = 18*10^10 m

Answer: A. Velocity

Explanation:

The fluid flow through a pipe has the constant flow rate, so:

Q1 = Q2

Then, A1 V1 = A2 V2

That means, if A1 increases, V1 will decrease in order to keep the flow rate constant. Mass stays the same since it has the same system, which is pipe. Flow rate stays the same, and density also stays the same since it consists of one type of fluid (i.e. water).

Velocity will decrease. The correct option is A.

The equation for flow \(Q\),

\(Q = A\times V\\\rm where,\\A = cross\ sectional\ area\\V = Velocity\ of\ the\ fluid\)

As the per the equation of continuity. for the same fluid in a pipe (properties of fluid are constant)  the flow at the inlet\((Q_1)\) and outlet\((Q_2)\) of the pipe will be constant. Therefore,

\(Q_1 = Q_2\\Q_1 =A_1 \times v_1\\Q_2 =A_2 \times v_2\\hence,\\A_1 \times v_1 = A_2 \times v_2\)

Hence, if the area is increased therefore to keep the flow constant, velocity will decrease.

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Answer:

Explanation:

A. Using

E= ma/q

E=m/q(2s/t²)

So

E= 9.1x10^-31/1.6*10^-19( 2*4.5/ 3*10-12)

E=5.7NC

The electric field has to be downward since the force is positive that is upward

B.

The electron acceleration is of the order of 10^11 times greater so for practical purposes we neglect the effect of gravity

Answer:

Explanation:

"fuse wire" typically refers to a thin, single-use wire that is used to protect an electrical circuit from overloading or short circuiting. The wire is designed to melt and break the circuit if the current flowing through it exceeds a certain level, which helps to prevent damage to the electrical equipment or a potential fire hazard. Once the fuse wire has melted, it must be replaced with a new one.

an "MCB" (miniature circuit breaker) is a type of switch that automatically trips and breaks the circuit when there is an overcurrent or short circuit.

Unlike a fuse wire, an MCB can be reset after it has tripped, making it more convenient for protecting electrical circuits. MCBs are typically more expensive than fuse wires, but they offer greater protection and are often used in modern electrical systems.

Answer:

x_total = 4662.5 m

Explanation:

This is a one-dimensional math problem, we must find the displacement in each section and then add them together.

1) let's use the equation

       x = v₀ t + ½ a t²

where it indicates that part of rest for which v₀ = 0

       x₁ = ½ a₁ t²

       x₁ = ½ 2.60 11²

       x₁ = 157.3 m

2) The second displacement is at constant speed,

   let's find the final speed of the previous displacement

       v = v₀ + a₁ t₁

       v = a₁ t₁

       v = 2.60 11

       v = 28.6 m / s

now we use the uniform speed

      v = x₂ / t₂

      x₂ = v t₂

let's reduce the time to SI units

      t₂ = 2.60 min (60 s / 1min) = 156 s

      x₂ = 28.6  156

      x₂ = 4461.6 m

3) it is braking

       x₃ = v t₃ - ½ a₃ t₃²

       x₃ = 28.6 3.05 - ½ 9.38 3.05²

        x₃ = 43.60m

a) total displacement is the sum of each displacement

     x_total = x₁ + x₂ + x₃

     x_total = 157.3 + 4461.6 + 43.60

     x_total = 4662.5 m

Answer:

The mean distance of Earth from the Sun is 149.6 × 10^6 km and the mean distance of Mercury from the Sun is 57.9 × 10^6 km.

hope it helps you

The average mean distance of Earth from the sun is 149.6 x 10⁶ km. Hence, option (c) is correct option.

The solar system is the collection of the sun, planets, and other celestial bodies that rotate around it. A belt of asteroids and eight planets make up our solar system. Considered a dwarf planet, Pluto.

In a constant orbit around the sun, every planet in the solar system orbits. Compared to planets farthest from the sun, planets closer to it revolve more quickly.

The star that is closest to Earth is the sun. Heat and light are continuously emitted from it. For all of the planets in our solar system, it is the primary source of heat and light energy.

In our solar system, only the earth is a planet that supports life. The presence of an atmosphere, water, and the proper distance from the sun are only a few of the ideal conditions that allow life to exist on earth.

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The power used, given that a force of 20 N is used to push the shopping cart 3.5 m in 2 seconds is 35 W

First, we shall determine the work done in pushing the cart. Details below:

Wd = Fd

Wd = 20 × 3.5

Wd = 70 J

Finally, we shall determine the power used in pushing the cart. Details below:

P = Wd / t

P = 70 / 2

P = 35 W

Thus, we can conclude that the power used is 35 W

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Answer: Limestone Caves

Explanation: The most common feature that can be caused purely by chemical weathering is Karst Landscape, which can lead to caverns and sinkholes.

A)  The constant of proportionality, K is 840 B) The current when the resistance is 12 ohms is 70 amperes.

The resistance R and the current I are inversely related.

I=k/R   (k is the constant of proportionality)

A) I=210 amperes

    R=4 ohms

    I=k/R

    k=I×R

    k=210×4=840

B)   R=12 ohms

      k=840

      I=k/R

      I=840/12=70 amperes

Another significant characteristic in electrical systems that can be measured is resistance. Ohms. are the units. used to measure. resistance. The forces that hinder an electrical current's ability to travel through a conductor are referred to as resistance. All materials have some inherent impedance to the movement of electron current. We haven't figured out how to create conductors without any resistance.

Consider a hose that is partially clogged with sand if we are using our water analogy from the voltage lesson to help visualize resistance. The water in the hose will flow more slowly due to the sand. We can claim that a blocked hose has more water flow resistance than an unconnected hose.

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Answer:

a because it is go

Explanation:

The spring constant, k, needed to achieve the desired launch speed of 12.6 m/s is 189.75 N/m, which is the spring constant of a linear spring.

Kinetic Energy: KE = 0.5 * m * v^2

Elastic Potential Energy: PE = 0.5 * k * x^2

Conservation of Energy: KE + PE = m * g * x

KE = 0.5 * 0.1 * 12.6^2 = 7.59 J

PE = 0.5 * k * 0.2^2 = 7.59 J

m * g * x = 7.59 J

k = (7.59 J) / (0.2^2) = 189.75 N/m

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Answer: Distance traveled in time t is s

Explanation: Self Explanatory

Answer:

The frictional torque is \(\tau = 0.2505 \ N \cdot m\)

Explanation:

From the question we are told that

   The mass attached to one end the string is \(m_1 = 0.341 \ kg\)

   The mass attached to the other end of the string is  \(m_2 = 0.625 \ kg\)

    The radius of the disk is  \(r = 9.00 \ cm = 0.09 \ m\)

At equilibrium the tension on the string due to the first mass is mathematically represented as

      \(T_1 = m_1 * g\)

substituting values

      \(T_1 = 0.341 * 9.8\)

      \(T_1 = 3.342 \ N\)

At equilibrium the tension on the string due to the  mass is mathematically represented as

      \(T_2 = m_2 * g\)

     \(T_2 = 0.625 * 9.8\)

      \(T_2 = 6.125 \ N\)

The  frictional torque that must be exerted is mathematically represented as

      \(\tau = (T_2 * r ) - (T_1 * r )\)

substituting values  

     \(\tau = ( 6.125 * 0.09 ) - (3.342 * 0.09 )\)

     \(\tau = 0.2505 \ N \cdot m\)

Answer:here to earn points

Explanation:

Answer:

F = I L X B = I L B sin theta

F = 5.2 * 1.2 * .87 sin 45 = 3.84 N   in the direction of (L X B)

Note: L and B must be at right angles for   F = I L B

To derive the equation for the buoyant force, we can start with the equation for the pressure from a fluid at a certain depth:

P = ρgh + Patm

where P is the pressure at a depth h, ρ is the density of the fluid, g is the acceleration due to gravity, and Patm is the atmospheric pressure at the surface of the fluid.

Now, let's consider a simple submerged object, such as a perfect cube with sides of length s, as the hint suggests. The object is fully submerged in the fluid, so it experiences a pressure difference between the top and bottom surfaces. The pressure at the top surface of the object is Ptop = ρghtop + Patm, where htop is the depth of the top surface below the surface of the fluid. The pressure at the bottom surface of the object is Pbottom = ρghbottom + Patm, where hbottom is the depth of the bottom surface below the surface of the fluid. Since the object is at rest in the fluid, the net force acting on the object must be zero. Therefore, the buoyant force must be equal and opposite to the weight of the object:

Buoyant force = Weight of object

The weight of the object is given by its mass multiplied by the acceleration due to gravity:

Weight of object = mg

where m is the mass of the object and g is the acceleration due to gravity.

To find the buoyant force, we need to find the difference between the pressure at the top and bottom surfaces of the object, and then multiply that difference by the surface area of the object:

Buoyant force = Pressure difference × Surface area

The pressure difference is given by:

Pressure difference = Pbottom - Ptop

= (ρghbottom + Patm) - (ρghtop + Patm)

= ρg(hbottom - htop)

Therefore, the buoyant force is:

Buoyant force = ρg(hbottom - htop) × Surface area

For a perfect cube with sides of length s, the surface area is given by A = 6s^2. Therefore, the buoyant force on the cube is:

Buoyant force = ρg(hbottom - htop) × 6s^2

This is the equation for the buoyant force on a submerged object, derived from the equation for the pressure from a fluid at a certain depth and the concept of the buoyant force being due to the pressure difference between the top and bottom of an object.

There is more to the Earth than what we can see on the surface. In fact, if you were able to hold the Earth in your hand and slice it in half, you'd see that it has multiple layers. But of course, the interior of our world continues to hold some mysteries for us. Even as we intrepidly explore other worlds and deploy satellites into orbit, the inner recesses of our planet remains off limit from us.

However, advances in seismology have allowed us to learn a great deal about the Earth and the many layers that make it up. Each layer has its own properties, composition, and characteristics that affects many of the key processes of our planet. They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core. Let's take a look at them and see what they have going on.

Like all terrestrial planets, the Earth's interior is differentiated. This means that its internal structure consists of layers, arranged like the skin of an onion. Peel back one, and you find another, distinguished from the last by its chemical and geological properties, as well as vast differences in temperature and pressure.

Explanation:

Answer:

С . Molecules are made up of two or more  atoms.

Explanation:

The relationship between molecules and atoms is that molecules are made up of two or more atoms.

Molecules are made up of atoms.

A molecule is the smallest particle of a substance element or compound capable of independent existence.

A molecule could be monoatomic, diatomic or polyatomic.

Monoatomic molecules are made up of one atom

Diatomic are made up of two different atoms

Polyatomic substances are made up of more than two kinds of atoms.

Answer:

S = Vx t = 900 t

t = 150 / 900 = 1/6 sec  

If the bullet is fired horizontally it will travel 900 m in .167 sec

H = 1/2 g t^2 = 1/2 * 10 * (1/6)^2 = .139 m      distance bullet will fall

Given::

Length = 6.00 m

Weight of beam = 155 N

Angle = 30.0 degrees

Weight added at the right-end = 100 N

If the system is in equilibrium, let's find the weight, w, at the left-end.

Since the system is in equilibrium, the net torque of the system will be zero.

Now, we have the equation:

Where w is the weight at the left end.

Let's solve for w.

We have:

Solving further:

Divide both sides by 2:

Therefore, the weight hung at the left end is 11.25 N

ANSWER:

11.25 N

Answer:

A. convergent boundary without subduction

Explanation:

The convergent boundary pushes together and makes the plates burst in an upward motion and creates a mountain.

The decision of the country's highest court may then be appealing to that Supreme Court of both the U. S., but only in cases where the issue involves federal law.

In particular, followers of hip-hop, surfing, and post - punk culture will find their clothing appealing. Every person who appreciates streetwear will discover the ideal item thanks to Supreme's wide range of clothing.

Rebellious and distinctive brand image! Despite giving a venture - capital group a 50% ownership in the company, Supreme has been able to keep its skater roots and fan base. To top it all off, the Supremes' emblem is distinctive, outstanding, and simple to recognize.

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