If the potential difference across the bulb in a camping lantern is 9.0 V, what is the
potential difference across the cells used to power it?

The specific heat capacity of copper is 0.888 kJ/(kg × °C).

Specific heat capacity is a thermal property of a substance. It indicates how much heat energy is needed to raise the temperature of a unit mass of a substance by one degree Celsius.

The formula for calculating the specific heat capacity of a substance is given as, q = m × c × ∆T`

Where: q = energy,

m = mass of the substance,

c = specific heat capacity of the substance,

∆T = change in temperature.

Now, let’s use the formula above to calculate the specific heat capacity of copper.

The energy required to raise the temperature of a 1 kg block of copper by 10°C is 8.88 kJ.

q = m × c × ∆T

c = q / (m × ∆T)

= 8.88 kJ / (1 kg × 10°C)

= 0.888 kJ/(kg × °C)

The specific heat capacity of copper is 0.888 kJ/(kg × °C).

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Question :-

Answer :-

Explanation :-

As per the provided information in the given question, The Resistance is given as 20 Ohm's . Current is given as 1.5 Amperes . And, we have been asked to calculate the Voltage .

For calculating the Voltage , we will use the Formula :-

\( \bigstar \: \: \: \boxed {\sf { \: Voltage \: = \: Current \: \times \: Resistance \: }} \)

Therefore , by Substituting the given values in the above Formula :-

\( \Longrightarrow \: \: \: \sf { Voltage \: = \: Current \: \times \: Resistance } \)

\( \Longrightarrow \: \: \: \sf { Voltage \: = \: 1.5 \: \times \: 20 } \)

\( \Longrightarrow \: \: \: \bf { Voltage \: = \: 30 } \)

Hence :-

\( \underline {\rule {180pt}{4pt}} \)

Additional Information :-

\(\Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} \)

\( \Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance}} \)

\( \Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } \)

Answer:

Explanation:

Given:

To Find:

Solution:

Using formula:

By Substituting the required values,

⇢ Voltage = 1.5 × 20

⇢ Voltage = 30 Volts.

Hence,

Answer:

x2- x1 / t2 - t1

Explanation:

To find this speed, you have to use the operation of: X2 -X1/ t2 -t1, we know that x is the distance, we do the operation and that would be our average speed

beta β = ₋₁e⁰ particles

₁₉K³⁸ ⇒  ₋₁e⁰ + ₂₀Ca³⁸ (A)

The action or do is the cause or applied force while the reaction is the after effect of the applied force.

Newton's Third Law of Motion states: "For every action, there is an equal and opposite reaction." This means that if an object A exerts a force on object B, then object B will exert an equal and opposite force back on object A.

Examples of Newton's Third Law of Motion include:

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Explanation:

Explanation:

yup, it's D following Newton's third law of motion

When it is dropping into the sand point the energy of the ball transform from potential energy to kinetic energy.

The energy of motion is known as kinetic energy, and it is manifested in the motion of a particle, an object, or a collection of particles. Any object that moves, such as a person walking, a ball being thrown, food falling from a table, or a charge particle in an electric field, utilizes kinetic energy.

Radiant, thermal, auditory, electrical, and mechanical kinetic energies are the basic categories. Gamma radiation and ultraviolet light, which are constantly travelling through the universe, are instances of radiant energy. Sound energy is kinetic energy that manifests as vibrations, such as when someone plays the drums

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Answer:

2. 1.85

Explanation:

the equations weight * distance / other persons weight = distance from fulcrum. so 66.4*2.35/84.2=1.8532 round down to 1.85

Answer:

K and N

Explanation:

Ionic character depends on the electronegativity difference between the bonding elements. The greatest the elctronegativity diffference the greatest the ionic character. The electronegativity difference between K and N is the greatest among the four options as N is one of the most electronegative elements.

The amount of heat that  is dropped in the hot reservoir is equal to 100 J. Option A

According to the first law of thermodynamics, we know that energy can neither be created nor destroyed but can be converted from one form another.  

We can see that as the heat is transferred from the we do some work so as to be able to extracts heat from a cold reservoir and dumps heat into a hot reservoir. Since heat can neither be created nor destroyed, the heat that is dumped must be equal to the amount of heat that is extracted.

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The expression that correctly represents the kinetic energy, KE, of a car with mass m that possesses momentum of magnitude p is:KE = p²/2mWhere KE is the kinetic energy, m is the mass of the car and p is the momentum of the car.According to the law of conservation of momentum, the momentum of an isolated system of objects that interact is conserved.

When a car is moving with velocity v, its momentum is given by:p = mvwhere m is the mass of the car.In mechanics, the kinetic energy of an object is defined as the energy it possesses due to its motion. The kinetic energy is given by:KE = 1/2mv²However, the question requires the kinetic energy in terms of momentum and mass. To get the kinetic energy in terms of momentum and mass, substitute the expression for momentum, p = mv, into the expression for kinetic energy:KE = 1/2mv²KE = 1/2m(v²)KE = p²/2mTherefore, the expression that correctly represents the kinetic energy, KE, of a car with mass m that possesses momentum of magnitude p is KE = p²/2m.


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Because of the earth's large mass and solid structure, the skier moves but the earth does not.

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The angular momentum of the ball that has a mass of 5.2 kg and is swung around a rope with a radius of 0.86 meters at a speed of 1.8 m/s is approximately 7.24 kg m²/s.

We know that angular momentum is the product of an object's rotational inertia and rotational speed or angular velocity. The equation for angular momentum is:L = IωWhere L is angular momentum, I is rotational inertia, and ω is angular velocity. Since the ball is moving in a circular path, we need to use the formula for rotational inertia of a point mass: I = mr², where m is the mass of the ball and r is the radius of the circle.The angular velocity ω can be calculated from the linear speed v using the formula v = rω, which gives ω = v/r. Substituting these values into the equation for angular momentum, we get:L = Iω = (mr²)(v/r) L = 5.2 kg x 0.86 m x 1.8 m/s = 7.24 kg m²/sTherefore, the angular momentum of the ball is approximately 7.24 kg m²/s.

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Answer:

A. Capitalist economy

Explanation:

The United States is a capitalist economy. Hope this helps, thank you !!

The volume of matter is primarily due to its electrons and protons.

Correct option is C.

Electrons are an essential element of all atoms, and contribute significantly to the overall volume of all matter. Protons are also essential elements of all atoms, and contribute to the overall volume of matter as well. Responsibility for the majority of the volume of matter lies with the electrons.

Electrons are negatively charged particles that are much smaller than protons. While electrons occupy the space in the atoms, protons are responsible for maintaining the atoms stable due to their positive charge. As such, electrons and protons both play an important role in maintaining the overall volume of matter.

Moreover, neutrons, which are located within the nucleus of atoms, also contribute to the overall volume of matter as they are needed to balance the positive charge of protons. In conclusion, electrons and protons are responsible for the majority of the volume of matter, as they are the essential elements that constitute atoms.

Correct option is C.

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Correct question is :

the volume of matter is due mostly to its

a. electrons.

b. protons.

c. both of these

d, none

Voltage drop across 2 cm of wire= 2 * 14 V = 28 V. The potential difference between the feet of the bird is 28 V..

A high-voltage transmission line is a wire that carries power across long distances. It is not insulated. This is due to the high voltage used to transmit electricity, which requires a minimum clearance from the ground and other structures. A bird perched on the wire with its feet 2.0 cm apart.

The potential difference between its feet is to be calculated.Below is the working:Resistance of the wire=7.0 ohmLength of the wire =100 km= 100000 mCurrent flowing through the wire = 200 APotential difference between the feet of the bird = Voltage drop across 2 cm of wireVoltage drop across 1 meter of wire = Voltage drop across 100 cm of wire=I*R= 200 * 7 = 1400 VVotage drop across 1 cm of wire= 1400/100 = 14.

Therefore, voltage drop across 2 cm of wire= 2 * 14 V = 28 V. The potential difference between the feet of the bird is 28 V.Answer: The potential difference between the feet of the bird is 28 V.

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The wave which has the longest frequency if, listed from smallest to largest are gamma ray, x-rays, ultraviolet, visible, infrared, microwave, and radio is radio waves and gamma rays have the highest frequency.

The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves or EM waves. In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves.

The term "electromagnetic spectrum" (EMS) refers to the entire range of electromagnetic radiation that is now understood. Wavelengths rise from roughly 10⁻¹⁸ m to 100 km, and frequencies fall from 3 × 10²⁶ Hz to 3 × 10³ Hz in this range.

The following list of the seven electromagnetic waves is organized by decreasing wavelength and increasing frequency and energy: X-rays, gamma rays, UV rays, visible light, radio waves, microwaves, and infrared waves.

Thus, radio waves have the longest frequency and gamma rays have the highest frequency.

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To determine the degrees Plato (°P) of a beer based on its specific gravity, you can use the following formula:

°P = (SG - 1) * 1000

Where °P is the degrees Plato and SG is the specific gravity.

In this case, if the beer has a specific gravity of 1.04, we can calculate the degrees Plato as follows:

°P = (1.04 - 1) * 1000

°P = 0.04 * 1000

°P = 40

Therefore, a beer with a specific gravity of 1.04 corresponds to 40 degrees Plato. The degrees Plato is a measure of the concentration of fermentable sugars in a solution and is commonly used in the brewing industry to estimate the potential alcohol content of the beer.

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Answer:

They do this by joining pieces of different Rock sequences together from different places in the whole world.

Explanation:

Geologic columns are basically an arrangement of rock layers whereby the newest rocks are at the top while the oldest rocks will be at the bottom. Thus, it is like a timescale that's used to find the age of rock formation on the earth around the world.

Answer: 1) Friction

2) Tension

3) Gravitation

4) Normal

Explanation:

Answer:

The 80 mph car

Because the formula says 1/2 mass but for the velocity it is squared

Answer:

Explanation:

The direction of the static friction force acting on the crate is opposite to the direction in which Craig is trying to push the crate, which is down the ramp. Therefore, the answer is a) Up the ramp.

In the context of this physics question, static friction acts in opposite direction to the force applied. Therefore, when pushing a crate up a ramp, the frictional force will be directed down the ramp.

The force of static friction acts in the direction opposite to the direction in which an object is being pushed or pulled. So, when Craig is trying to push a heavy crate up a wooden ramp, the frictional force is acting against his push. That means it's directed down the ramp. So, the answer is b Down the ramp.

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Answer:

The field will remain the same

Explanation:

This is because electric field given as

E1= kq1/r²

And that of second charge

E² = kq2/r²

Is not affected by the size of the second charge q2

The displacement of the bicycle is 85.3125m

Displacement of the bicycle may be defined as the change in position of the bicycle. It is a vector quantity so that it has direction and magnitude.

We are given that,

The initial velocity of the bicycle = u = 5m/s

The acceleration of the bicycle is = a = 2.5 m/s²

The time taken by the bicycle = t = 6.5 seconds

Therefore, to get the value of displacement of the bicycle by the equation of motion which is written as,

S = ut + (1/2) at²

Where, S is displacement, u is initial velocity, a is acceleration and t is time taken by the bicycle.

Since , putting the values in above equation then we get,

S = {5m/s × 6.5sec} +{ (1/2) × 2.5m/s² × (6.5 sec)²}

S = 32.5 m + 52.8125m

S = 85.3125m

Therefore, the bicycle would be moves 85.3125m

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Answer:

thermal pollution

Explanation:

took exam!

When the heat is discharged into the atmosphere then energy is changed into mechanical energy is known as Thermal pollution.

When Thermal pollution is the degradation of water differentia by any procedure that changes ambient water temperature.

A typical motivation for thermal pollution is the usefulness of water as a coolant by power plants and industrial manufacturers.

When the water utilized as a coolant is returned to the biological environment at a more elevated temperature, the sudden transformation in temperature lowers the oxygen supply and affects ecosystem composition.

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That is acceleration due to the horizontal component of velocity is 0

When the body is on the projectile we tend to take components on the initial velocity for ease of calculation. The velocity is then divided into its components u sinФ and u cosФ where the horizontal component of the velocity of the projectile is shown by u cosФ while the vertical component of the velocity of the projectile is shown by u sinФ

To calculate the acceleration of either component of the velocity is very easy. In this case, we use the third equation of Newton's Equation of motion.

\(V^{2}\)-\(U^{2}\)=2as

When we calculate the acceleration of the horizontal component of velocity, we find that since the velocity remains the same at both the endpoint and the start no acceleration takes place.

\(U^{2}\)\(Sin^{2}\)Ф-\(U^{2}\)\(Sin^{2}\)Ф=2as

Thus, 2as=0

That is acceleration due to the horizontal component of velocity being 0

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Answer:

im gonna go with C

Explanation:

Explanation:

300m÷60s=5m/s

hope this can help maybe

Answer:

Explanation:

From the question we are finding the final velocity of the bicycle

To find the final velocity given the initial velocity , acceleration and time we use the formula

v = u + at

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time

From the question

u = 10 m/s

a = 6 m/s²

t = 20 s

Substitute the values into the above formula and solve

That's

v = 10 + 6(20)

= 10 + 120

We have the final answer as

Hope this helps you.

Answer:B

26m/s

Explanation: