A Nichrome wire 75 cm long and 0.25 mm in diameter is connected to a 1.7 volt flashlight battery.
A) What is the electric field inside the wire?
B) Next the Nichrome wire is replaced by a wire of the same length and diameter, and same mobile electron density but with electron mobility 4 times as large as that of Nichrome. Now what is the electric field inside the wire?

The electromagnetic waves with an energy of \(1.5 \times 10^{-24} J\) are likely X-rays.

The energy of an electromagnetic wave is related to its frequency and wavelength by the equation:

E = hf = hc/λ

where:

E = energy of the electromagnetic wave

h = Planck's constant (\(6.626 \times 10^{-34} J s\))

f = frequency of the electromagnetic wave

c = speed of light (\(3.00 \times 10^8 m/s\))

λ = wavelength of the electromagnetic wave

Solving for λ:

λ = hc/E = \((6.626 \times 10^{-34} J s)(3.00 \times 10^8 m/s)/(1.5 \times 10^{-24} J)\)

λ ≈ \(4.40 \times 10^-8 m\)

This corresponds to a wavelength of about 44 nanometers, which falls in the range of X-rays. Therefore, the electromagnetic waves with an energy of \(1.5 \times 10^{-24} J\) are likely X-rays.

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Answer:

the answer is the option C

Answer:

to calculate power of heater in w

In general, the power required by electrical heating is calculated in watts. Wattage: Multiply the area in feet by 10. For a room 20 feet by 20 feet, we obtain 400 sq. ft., multiplied by 10 to give 4000 watts

Answer:

240 watt heater

Explanation:

Just look at only the L side of the graph

   the liquid is heated from - 20 to 40 = 60 C

      so the J of heat required =  .8kg  *  1000 j /kg-C * 60 C = 48 000 J

            this heat is put into the system over 200 seconds

                 48000 J / 200 seconds = 240 watts

Answer:

25N

Explanation:

The force the head of the nail is doing on the hammer is 25N. This is based on the newton's third of law of motion.

It states that "action and reaction are equal but opposite in direction".

A body exerting a force of 25N on another will get a reaction force of an equal but negative magnitude of force in the opposite direction.

Answer: As a roller coaster quickly accelerates away from the starting station, the people in the cars will experience several aspects of motion, including:

Forward acceleration: The riders will feel a sensation of being pushed back into their seats as the roller coaster accelerates forward. This is due to the force of acceleration acting on their bodies, which is in the same direction as the coaster's motion.

Increasing speed: As the roller coaster accelerates, the riders will feel the sensation of increasing speed. This may result in a feeling of wind rushing past them and a sense of excitement or thrill as the coaster gains momentum.

Change in velocity: The riders will experience a change in velocity as the coaster accelerates. Velocity is a vector quantity that includes both speed and direction, so the riders will feel changes in both the magnitude and direction of their motion as the coaster turns or changes its path.

Inertia effects: The riders will also experience the effects of inertia, which is the tendency of objects to resist changes in their motion. As the coaster accelerates, the riders may feel a sensation of being "pushed" or "pulled" in different directions, depending on the coaster's motion and changes in velocity.

Thrills and excitement: The rapid acceleration of a roller coaster can also create a sense of thrills and excitement for the riders, as they experience the dynamic forces and motion of the coaster. This can include sensations of weightlessness, airtime, and other thrilling experiences that are unique to roller coasters.

It's important to note that the exact experience of motion on a roller coaster can vary depending on the specific design and features of the coaster, as well as individual differences in perception and sensation among riders. Safety restraints, such as seat belts and harnesses, are typically in place to ensure the safety of riders during the acceleration and motion of a roller coaster.

My primary mode of transportation is a car, and its energy efficiency is typically around 3 kW-hrs per 100 person-km.

As my primary mode of transportation, I rely on a car for commuting and traveling. While cars offer convenience and comfort, they are not the most energy-efficient option. On average, a car consumes approximately 3 kW-hrs of energy per 100 person-km. This energy consumption includes the fuel or electricity required to power the vehicle and accounts for the energy losses during the generation, distribution, and storage processes.

The energy efficiency of a car can vary depending on several factors, including the vehicle's make and model, driving conditions, and driving habits. Factors such as speed, acceleration, and braking can impact fuel consumption and efficiency. Additionally, the type of fuel or power source used by the car influences its energy efficiency. Electric vehicles (EVs) tend to have higher energy efficiency compared to traditional internal combustion engine (ICE) vehicles, as they convert a higher percentage of their energy into forward motion.

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Answer:

200

Explanation:

P = M x V

P = 8 x 25

P = 200

The density of the object is 0.032 g/cm^3.

The term density means the ratio of the mass to the volume of an object. Now we know that when an object is dense that it would sink to the bottom of a fluid.

Now given that;

Mass = 0.8 g

volume= 25 cm^3

Density = mass/volume

Density =  0.8 g / 25 cm^3

= 0.032 g/cm^3

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MISSING PARTS

What is the density of an object having a mass of

0.8g and a volume of 25cm^3

Answer:

One of the harder ideas to grasp in fusion is that nuclei, which, because of their electric charge, strongly repel at long range

(compared to the size of a nucleus), can strongly attract at short range. This activity allows students to explore a similar situation in

which

the magnetic interaction provides the repulsion (similar to the electric interaction within

the nucleus) and Velcro provides an attractive force at short range (similar to the nuclear

strong interaction).

Explanation:

Brainliest Answer pls

Answer:

4.2 is the answer

Explanation

The image formed in a plane mirror is an equal distance behind the mirror as the object in front of it.

Step 1: the equation to this problem would be: 8.4/2

Step 2: 8.4 ÷ 2 = 4.2

Hope you could understand.

If you have any query, feel free to ask.

Answer:

for resistors in series, add the resistances to get their equivalence. The answer is

80.0 Ohms

The path of a charged particle moving parallel to a uniform magnetic field will be straight line

Force on a charged particle moving in a magnetic field can be calculated by = q.(v*B )

q = charge of the particle

v = velocity of the particle

B = magnetic field

theta = angle between v and B

q . (v B sin (theta) )

Since,  particle is parallel to the magnetic field

hence , theta = 0°

so sin(theta) = sin 0° = 0

hence , force = 0

since , there is no force acting on the particle it will remain in that motion in hat it was when it initially came in the magnetic field . Hence It will be moving along a straight line path because the magnetic force on the charged particle is zero.

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The initial oil-in-place (N) of a volumetric oil reservoir is a critical parameter used to estimate the total amount of oil that can be recovered from the reservoir. It represents the total volume of oil contained within the reservoir at the beginning of its production life.

The initial gas-in-place (G) of a volumetric gas reservoir is a critical parameter used to estimate the total amount of gas that can be recovered from the reservoir. It represents the total volume of gas contained within the reservoir at the beginning of its production life.To calculate the initial oil-in-place and gas-in-place, we need to use certain parameters such as the area of the reservoir, the thickness of the reservoir, the porosity of the reservoir, the initial oil or water saturation, and the formation volume factor. The formulas used to calculate the initial oil-in-place and gas-in-place are different, and the parameters used in each formula are specific to either an oil or gas reservoir.

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The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:

F = ΔP / ΔT

where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.

Now, let's apply the given values to the above equation.

Final momentum (p2) = mass × final velocity (v2)

p2 = 0.15 kg × (-50 m/s)

p2 = -7.5 kg.m/s

Initial momentum (p1) = mass × initial velocity (v1)

p1 = 0.15 kg × (40 m/s)

p1 = 6 kg.m/s

Change in momentum (ΔP) = p2 - p1

ΔP = -7.5 kg.m/s - 6 kg.m/s

ΔP = -13.5 kg.m/s

Time of collision (ΔT) = 8.0 × 10³ s

Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:

F = ΔP / ΔT

F = -13.5 kg.m/s ÷ 8.0 × 10³ s

F = -1.7 × 10⁻³ N

Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

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When temperature of water rises, it stats moving from higher to lower temperature area - this  evidence supports that water can be thought of as a mass of moving particles .

The volume retention and conformity to the shape of a liquid's container are two of its most noticeable physical characteristics. When a liquid substance is poured into a container, it conforms to the shape of the container and will stay inside the container so long as the liquid state persists.

Water is a liquid. Hence, water can be thought of as a mass of moving particles.

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sodium channel  is responsible for the rapid depolarization phase of potentials that originate in the sa nodal cells.

The resting membrane potential of the SA nodal cells is unstable and spontaneously depolarizes due to a pacemaker potential. The "strange" Na+ current and a drop in the conductance of the inward rectifier K+ channel are to blame for this.

The rapid transmission of depolarizing impulses throughout cells and cell networks by sodium channels, which enable the coordination of higher activities from locomotion to cognition, plays a key role in physiology. These channels hold a particular place in physiology history as well.

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Answer:

This leads to backwardness and lagging in the development of the the society. Social problems such as sickness, poverty , social injustices , corruption , nepotism, tribalism are slowing down the process of development .

It's important to know that the wavelength and the frequency has inverse relationship, which means the longest is its wavelength, the more intense will be the frequency.

Answer:

Gravitaitional pull

Explanation:

Guessing

The capacitor that has the largest potential difference between its plates is D.

Equation V = Q/C, where V is the potential difference, Q is the charge held on the capacitor, and C is the capacitance, gives the potential difference between the plates of a capacitor.

The four capacitors in the diagram all have the same charge because they are all linked in series. The capacitor with the highest capacitance will therefore have the smallest potential difference, and vice versa.

The capacitor with the smallest capacitance, and consequently the one with the greatest potential difference between its plates, according to the values shown in the diagram, is capacitor D. Therefore, (D) is the correct response.

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Answer:

If something has atoms that are bound together in covalent bonds like sugar, it usually has potential energy or chemical energy. Because potential energy is often stored in covalent bonds that hold atoms together in the form of molecules.

Answer:

Explanation:

freely falling object

Answer:

\(2\sqrt{6}\)  \(\frac{mi}{s}\)

Explanation:

Assuming there is no waste of energy:

\(K_{1} = K_{2}\\\frac{1}{2}m_{1}v_{1_{1}}^{2} + \frac{1}{2}m_{2}v_{2_{1}}^2 = \frac{1}{2}m_{1}v_{1_{2}}^{2} + \frac{1}{2}m_{2}v_{2_{2}}^2\\\\=> m_{1}v_{1_{1}}^{2} + m_{2}v_{2_{1}}^2 = m_{1}v_{1_{2}}^{2} + m_{2}v_{2_{2}}^2\\\\m_{1} = 2 kg, m_{2} = 1 kg, v_{1_{1}} = 4 \frac{mi}{s} , v_{2_{1}} = 0\\=> 32 = 8 + v_{2_{2}}^{2} => v_{2_{2}} = 2\sqrt{6} \frac{mi}{s}\)

Answer:

Work is said to be done when a force applied to an object moves that object. We can calculate work by multiplying the force by the movement of the object.

Answer:

Work is done by a force on an object if (i) a force acts on the object and (ii) the object is displaced from its original position

Resistance decreases the flow of current in a circuit.

Explanation:

The resistance of an electrical circuit is defined as the opposition to the flow of current in that particular circuit

The differential of the process X(t)Y(t) is:  d(X(t)Y(t)) = tY(t)dW(t) + 2tW(t)dY(t).

To find the differential of the process X(t)Y(t), we can use Itô's Lemma. Let's start by applying Itô's Lemma to the product X(t)Y(t).

Let Z(t) = X(t)Y(t).

By Ito's Lemma, we have:

dZ(t) = (∂Z/∂t)dt + (∂Z/∂X)dX(t) + (∂Z/∂Y)dY(t) + (1/2)(∂²Z/∂X²)d[X(t)]² + (∂²Z/∂X∂Y)dX(t)dY(t) + (1/2)(∂²Z/∂Y²)d[Y(t)]².

Now let's calculate each partial derivative term by term:

(∂Z/∂t) = 0

(∂Z/∂X) = Y(t)

(∂Z/∂Y) = X(t)

(∂²Z/∂X²) = 0

(∂²Z/∂X∂Y) = (∂Z/∂Y) = X(t)

(∂²Z/∂Y²) = 0

Now we substitute these derivatives back into the expression for dZ(t):

dZ(t) = (∂Z/∂t)dt + (∂Z/∂X)dX(t) + (∂Z/∂Y)dY(t) + (1/2)(∂²Z/∂X²)d[X(t)]² + (∂²Z/∂X∂Y)dX(t)dY(t) + (1/2)(∂²Z/∂Y²)d[Y(t)]²

= 0 + Y(t)dX(t) + X(t)dY(t) + 0 + X(t)dY(t) + 0

= Y(t)dX(t) + 2X(t)dY(t).

Now let's substitute the expressions for X(t) and dX(t):

dX(t) = tdW(t),

X(t) = tW(t).

Substituting these back into dZ(t):

= Y(t)(tdW(t)) + 2(tW(t))dY(t)

= tY(t)dW(t) + 2tW(t)dY(t).

Therefore, we have:

d(X(t)Y(t)) = tY(t)dW(t) + 2tW(t)dY(t).

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