Find the power dissipated in each of these extension cords: a) an extension cord having a 0.0575 Ω resistance and through which 4.88 A is flowing. ____________ W b) a cheaper cord utilizing thinner wire and with a resistance of 0.28 Ω. __________W

The statement that a converging lens will send all of the light that it receives from a distant star through a point is true.

This point is known as the focal point of the lens. The way a converging lens works is by bending the light rays that pass through it towards a single point, which is the focal point.

The distance between the lens and the focal point is known as the focal length of the lens. This property of the converging lens is what allows it to form images of distant objects on a screen or in the eye.

It is important to note that the size and position of the image formed by the lens will depend on the distance between the lens and the object being observed, as well as the distance between the lens and the screen or eye.

This is known as the lens equation and can be used to calculate the properties of images formed by lenses.

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Answer:

no

Explanation:

because it will bind together in the molecular level

Answer:

The velocity of the crossbow as it recoils is 5 m/s. This can be calculated using the conservation of momentum. The momentum of the system before the bow was triggered is 0 (since the bow is stationary). After launching the bolt, the momentum of the system is (0.10 kg * 25 m/s), so in order for the momentum of the system to remain constant, the crossbow must recoil with a momentum of (5.0 kg * -5 m/s).

The total work done in lifting the bucket and rope is 187.2 foot-pounds (ft-lb).

To find the work done in lifting the bucket and rope, we need to consider two parts:

Part 1: Work done lifting the bucket (without the rope) 24 ft:

The work done in lifting the bucket can be calculated by multiplying the weight of the bucket by the distance it is lifted.

Given:

Weight of the bucket = 7 lb

Distance lifted = 24 ft

Work done lifting the bucket = Weight of the bucket x Distance lifted

Work done lifting the bucket = 7 lb x 24 ft

Please note that the units need to be consistent for the calculation. In this case, we have pounds (lb) and feet (ft).

Part 2: Work done lifting the rope:

Assuming the force required to lift the rope is equal to its weight, we can calculate the work done lifting the rope by multiplying the weight of the rope by the distance it is lifted.

Given:

Weight of the rope = 0.8 lb

Distance lifted = 24 ft

Work done lifting the rope = Weight of the rope x Distance lifted

Work done lifting the rope = 0.8 lb x 24 ft

Now, we can calculate the total work done in lifting the bucket and rope by summing up the work done in both parts:

Total work done = Work done lifting the bucket + Work done lifting the rope

Please note that the units of work are in foot-pounds (ft-lb).

Now, we can calculate the values:

Work done lifting the bucket = 7 lb x 24 ft = 168 ft-lb

Work done lifting the rope = 0.8 lb x 24 ft = 19.2 ft-lb

Total work done = 168 ft-lb + 19.2 ft-lb = 187.2 ft-lb

Therefore, the total work done in lifting the bucket and rope is 187.2 foot-pounds (ft-lb).

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The complete question is:

Find the work done In lifting the bucket A 7 Ib bucket attached to a rope is lifted from the ground Into the air by puling in 24 ft of rope at a constant speed. If the rope weighs 0.8, how much work done lifting the bucket and rope? Part1 -1 Find the work done lifting the bucket (without the rope) 24 ft . ft-Ib Part-2. Assuming the force required to lift the rope is equal to its weight; find the force function, F(x), that acts on the rope when the bucket is at height of x Ft. Part- 3 Setup the Integral that will give the work required to lift the rope 24 ft. Part -4 The total amount of work done lifting the bucket and ft-Ib.

Write each force in component form:

v ₁ : 50 N due east   →   (50 N) i

v ₂ : 80 N at N 45° E   →   (80 N) (cos(45°) i + sin(45°) j ) ≈ (56.5 N) (i + j )

The resultant force is the sum of these two vectors:

r = v ₁ + v ₂ ≈ (106.5 N) i + (56.5 N) j

Its magnitude is

|| r || = √[(106.5 N)² + (56.5 N)²] ≈ 121 N

and has direction θ such that

tan(θ) = (56.5 N) / (106.5 N)   →   θ ≈ 28.0°

i.e. a direction of about E 28.0° N. (Just to clear up any confusion, I mean 28.0° north of east, or 28.0° relative to the positive x-axis.)

Explanation:

Veins carry deoxygenated blood from different parts of the body to our heart. ... Since a larger volume of blood is collected in the right auricle than that of the left auricle, right auricle is larger than the left auricle.

Answer:

the action of investigating something or someone; formal or systematic examination or research.

Explanation:

This definition is provided by Oxford Languages

Answer:

first a representative sponsor is a bill the bill is then assigned to a committee for study if released by the committee the bill is put on a calendar to be voted on debated or amended if the bill passes by simple

I would say A because Newton Law of motion is you pushing force and the object pushing force back on you

A basketball sitting on the basketball court doesn’t move until something pushes it. - this provides the best evidence for Newton’s First Law of Motion. Hence, option (B) is correct.

According to Newton's first law of motion: Until and unless an external force occurs on a body, it is in a condition of rest or uniform motion in a straight line.

According to Newton's first law of motion, a body won't begin to move unless and until an outside force acts on it. When anything starts moving, it won't stop or vary its speed unless another force acts on it. The law of inertia is another name for the first law of motion.

Hence, a basketball sitting on the basketball court doesn’t move until something pushes it. This is an example of  Newton’s First Law of Motion.

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The net force on particle q2 can be calculated by finding the net electric force acting on it. The net electric force acting on a particle is the vector sum of the forces exerted by all the other charges on it.

The electric force between two charges q1 and q2 is given by Coulomb's law: F = k * (q1 * q2)/r^2, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

The force on particle q2 due to q1 will be:

F1 = k * (q1 * q2) / (0.980m)^2

The force on particle q2 due to q3 will be:

F2 = k * (q2 * q3) / (0.750m)^2

The net force acting on q2 will be the vector sum of F1 and F2.

Keep in mind, q1 and q3 have opposite charges, so they attract each other, while q2 has the same charge as q1, so they repel each other.

Note: The unit of charge is Coulomb (C), but in this problem you are given the charges in microCoulomb (uC) so you need to convert it to Coulomb.

Answer:

The solenoid has 213 turns.

Explanation:

The number of the solenoid's turns (N) can be found as follows:

\( N = \frac{L*I}{\phi_{B}} \)    (1)

Where:

L: is the self-inductance of the solenoid

I: is the current = 1.40 A

\(\phi_{B}\): is the magnetic flux = 0.00308 Wb      

The self-inductance of the solenoid (L) is:

\( L = \frac{|\epsilon|}{|dI/dt|} \)   (2)

Where:

ε: is the induced emf = 12.2x10⁻³ V

dI/dt: is the rate changing of the current = 0.0260 A/s

By entering equation (2) into (1) we can find the number of turns:

\( N = \frac{|\epsilon|*I}{\phi_{B}|dI/dt|} = \frac{12.2 \cdot 10^{-3} V*1.40 A}{0.00308 Wb*0.0260 A/s} = 213 \)        

Therefore, the solenoid has 213 turns.

I hope it helps you!

Answer:

the is answer condensation

Explanation:

I say condensation because it's like a gas

The car covers a distance d after time t of

d = (2.8 m/s²) t²

Solve for t when d = 69 m:

69 m = (2.8 m/s²) t²

t² = (69 m) / (2.8 m/s²)

t ≈ 4.96 s

The number of water molecules in the hot tub is 1.47×10²⁷ molecules

The following data were obtained from the question:

The number of water molecules in the hot tub can be obtained as follow

Number of molecules = Mass of water / mass of one molcule

Number of molecules = 4.38×10³ / 2.98×10⁻²⁴

Number of molecules = 1.47×10²⁷ molecules

Thus, number of molecules in the hot tub 1.47×10²⁷ molecules

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Answer:

4 J

Explanation:

From the image attached, we can see 2 horizontal forces acting on the box albeit in opposite directions.

Now, the net force will be;

F_net = 3 - 1

F_net = 2 N

To move a distance of 2 metres, kinetic energy is;

K.E = Force × Distance = 2 × 2 = 4 J

Answer: c

Explanation:

If the net force on the bowling ball is tripled, its new acceleration is 21 m/s². The correct option is d.

The force is the action of push or pull which can move or stop the object.

The initial force is F = mass x acceleration

F = 3.17515 kg x 7 m/s²

F = 22.23 N

When the net force is tripled, the new acceleration will b e

3 x F =m x a'

3 x 22.23 = 3.17515 x a'

a' = 21.003 m/s²

Thus, the new acceleration is 21 m/s². The correct option is d.

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The wavelength of the radiation at the beginning of the range is 5.8 × 10² -  1.86 × 10² meter.

A wave is a non-stop and repeating disturbance of a medium and a pulse is an unmarried disturbance.

Calculation:-

c=λ⋅f

λ= c/f

 = 3 × 10⁸ /  517 × 1000

 =  5.8 × 10²

λ= c/f

 = 3 × 10⁸ /  1612 × 1000

= 1.86 × 10²

Therefore, wavelength range =  5.8 × 10² -  1.86 × 10² meter.

A wave is a propagating dynamic disturbance of one or greater portions. Waves can be periodic, in which case those quantities oscillate repeatedly about an equilibrium cost at some frequency. wave, propagation of disturbances from place to vicinity in a regular and prepared way. maximum familiar are floor waves that journey on water, but sound, light, and the motion of subatomic particles all showcase wavelike houses.

A wave is a disturbance in a medium that contains strength without an internet motion of particles. it is able to take the form of elastic deformation, a variation of stress, electric or magnetic intensity, electric-powered potential, or temperature.

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Answer:

If it is pure, the substance is either an element or a compound. If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.

Explanation:

Answer: The use of S I Unit brings uniformity in measurements.

Explanation:

The S I unit is the international system of units which are used to express the magnitudes or quantities of important natural phenomena. It is used universally as a standard for measurements thereby creating an avenue for uniformity in measurements. The base units that makes up the SI unit are:

--> Length: this is measured in meters (m)

--> Time: this is measured in seconds (s)

--> Mass: this is measured in kilogram (kg)

--> Temperature: this is measured in Kelvin (k)

--> Electric current: this is measured in ampere (A).

--> Amount of substance: this is measured in mole

--> Luminous intensity: this is measured in candela (cd)

These units are used as the standard to make our judgement of measurement more reliable and accurate. And since there is only one basic unit for each quantity (example length which is measured in meters) there is no need for further conversions.

Answer:

Energy is defined as the ability to do work. Forms of energy could be kinetic energy or potential energy. Thermal or heat energy can originate from a hot object such as the sun. Energy is used to produce work. Electrical energy for lighting purposes and heating in homes and factories.

Explanation:

Energy is defined as the ability to do work and can be in various forms such as kinetic energy, potential energy, thermal, chemical, electrical energy etc.

Energy origination depends on the type of energy form in discussion. Thermal or heat energy can originate from a hot object such as the sun or an iron box, chemical energy originates from the interaction of atoms and molecules and electrical energy can be initiated by movements of electrons.

Energy is used to produce work. Different forms of energy can do different tasks such as;

Heat energy for heating water

Electrical energy for lighting purposes

Geothermal energy for producing heat and electricity

Nuclear energy for production of nuclear power

Chemical energy for facilitating chemical reactions

We would apply the relativistic kinetic energy formula which is expressed as

KE = (y - 1)mc^2 = [1/√(1 - v^2/c^2 - 1]mc^2

where

m is the mass of proton

c is the speed of light

v is the speed of the proton

From the information given,

m = 1.67 x 10^-27 kg

c = 3 x 10^8 m/s

v = 0.54c

Thus,

KE = 1.67 x 10^-27 x (3 x 10^8)^2[1/√(1 - (0.54c/c)^2 - 1]

KE = 28.27 x 10^-12 J

We would convert from joules to mev

1 J = 6,241,509,343,260 MeV

28.27 x 10^-12 = 28.27 x 10^-12 x 6,241,509,343,260

KE = 176.48 Mev

the translational kinetic energy is 176.48 Mev

Explanation:

The potential energy of an object has the following formula

         Potential energy = mgh

      where m = mass of the object

                   g = acceleration due to gravity

                   h = height of the object

This means that the potential energy of an object depends upon its mass, acceleration due to gravity, and height.

In the given situation we have a bucket full of water. If the mass and acceleration due to gravity are not changed, the only way the potential energy can be decreased is by reducing the height of the bucket full of water.

This can be done by: -

         (i) Lifting the bucket full of water in such a way that you

             decrease its height as compared to the bench.

        (ii) Put the bucket full of water on a stool whose height is

            lower than the bench.

Answer:

1.By decreasing it's contents- this decreases the weight of the bucket thus decreasing the potential energy of the bucket.

2.By decreasing the height of the bench we have decreased the amount of potential energy stored in the bucket

Answer:

The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

Explanation:

Hope this helps & plz mark brainiest

Answer:

energy that is still

Explanation:

( long definition)

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors

// have a great day //

Answer:

The projectile's horizontal speed is constant throughout the entire trajectory because gravity only acts downwards in the vertical direction.

Explanation:

I did this in Physics a while ago but I believe my answer is correct.

Hope this helps! (:

The walker is walking at a uniform speed that is constant speed.

An object is considered to be moving with uniform speed when it covers the same distance in the same amount of time, as opposed to non-uniform speed when it covers different distances in the same amount of time. The distance-time graph has a steady slope. As a result, it demonstrates that the rate at which distance changes is constant. Thus, it depicts a constant speed. We refer to an object as travelling at a constant speed when its speed is constant and neither rises nor falls.

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Rolling the barrel is more work.

Work in physics is the energy that is transferred to or from an item when a force is applied along a displacement. In its simplest form, it equals the product of the force's magnitude and the distance traveled for a constant force directed in the direction of motion.

Work = force x distance. In units, Joules = Newtons x meters.

When a body is lift than angle is right angle so work done is zero as force and displacement is perpendicular while in case of rolling it is at theta angle so work is done in this case.  

Rolling the barrel is more work.

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The period of rotation of the cow in the diagram is 1.85 seconds

First, we shall determine the length. Details below:

L² = 75² + 40²

L² = 5625 + 1600

L² = 7225

Take the square root of both sides

L = √7225

L = 85 cm

Finally, we shall obtain the period of rotation. Details below:

T = 2π√(L/g)

T = (2 × 3.14) × √(0.85 / 9.8)

T = 6.28 × √(0.85 / 9.8)

T = 1.85 seconds

Thus, we can conclude from the above calculation that the period of rotation is 1.85 seconds

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Answer: the period of rotation is 1.85 seconds

Explanation: the other guy is right

To make a 200 ml solution of 5 mm sucrose from a 100 mm sucrose solution we have to take a volume of: 10ml of the concentrated solution

To solve this problem, the formula and the procedure that we have to use is:

c1 * v1 = c2 * v2

Where:

Information about the problem:

Applying the dissolution of concentrations formula and clearing the volume of the concentrated solution (c1) we get:

c1 * v1 = c2 * v2

v1 = (c2 * v2)/ c1

v1 = (5 mm * 200 ml)/ 100 mm

v1= 10 ml

In chemistry a solution is known as a homogeneous mixture of two or more components called:

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Answer:

At point A, the comet has the least kinetic energy because the comet is resting. 3. From point B to point D its orbit's potential energy is decreasing and its kinetic energy is increasing meaning it's moving more and more