help me please this assignment is due at 11:59 p.m.

Now chose the option below that best completes this sentence: An ammeter is always connected in series because it has very low resistance.

For current, flow rate is inversely proportional to resistance and directly proportional to potential difference. Other flows include permeation, surface diffusion, and the diffusion of one gas through another. a System of Charges' Electric Potential Energy The amount of work required to form a system of charges by bringing them to their specific positions from infinity against the electrostatic force without any acceleration is equal to the system's electric potential energy. U is used to indicate it. The electric force per unit charge acting on a test particle at a specific location in space is represented by the electric field, which is a vector quantity. The electric field is a vector quantity because force is a vector.

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The power in watts is 5 x  10⁷ watts and in horsepower is 67024. 128 Hp

Wattage is calculated by multiplying voltage in volts by the current in amperes. A current of 10 amps at 240 volts produces 2,400 watts of power. This means that if you double the voltage, you can deliver twice the power with the same current. For this conversion, multiply the energy consumption in kWh by 1,000 to get the energy consumption in watt-hours.

calculation:-

power = work x  time

           =  1.0 x  10⁶ x 50.0 s

            = 5 x  10⁷ watts.

1 horsepower = 746 watts

5 x  10⁷ watts./746

= 67024. 128 Hp

Similar to DC circuits, the instantaneous power of AC circuits is given by P=VI. where V and I are the instantaneous voltage and current. Watts measures the percentage of power at a given point in time. Watt-hours measure the amount of power over a period of time one hour. Simply put, a watt-hour is equivalent to 1 watt of power flow for 1 hour. In other words, a 5-watt LED bulb left on for an hour consumes 5-watt hours of energy.

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Answer:

487.13N

Explanation:

According to Newton's second law;

F = ma

F is the net force

m is the mass of the object

a is the acceleration

First we need to find the resultant of the acceleration

a =√810²+910²

a = √656,100+828,100

a =√1,484,200

a = 1218.28m/s²

Ball mass = 0.40kg

Next is to get the magnitude of the net force

F = 0.4 × 1218.28

F = 487.31N

Hence the magnitude of the net force acting on the soccer ball at this instant is 487.13N

To operate a mixer circuit , Anne should use a (motor, buzzer, bulb, or battery) to transfer electric energy into motion. She should also use a (switch, resistor, buzzer, or bulb) to start and stop the flow of current.

An electric-powered circuit consists of a device that gives energy to the charged particles constituting the modern-day, consisting of a battery or a generator; devices that use cutting-edge, including lamps, electric cars, or computer systems; and the connecting wires or transmission traces.

An electrical circuit is an interconnection of electrical components or a version of such an interconnection, consisting of electrical elements. an electrical circuit is a network along with a closed loop, giving a go-back direction for the cutting-edge.

An electrical circuit consists of a source of electrical strength, two wires that can convey electric power present day, and a mild bulb. One stop of both the wires is hooked up to the terminal of a mobile at the same time as their free ends are related to the light bulb. the electric circuit is damaged while the bulb is switched off.

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a ) Thermal energy generated by the brakes as a result = 197.4 KJ

b ) In kilocalories = 41 Kcal

KE = 1 / 2 m v²

KE = Kinetic energy

m = Mass

v = Velocity

m = 1350 kg

v = 61.5 km / h = 17.1 m / s

KE = 1 / 2 ( 1350 * 17.1 * 17.1 )

KE = 197376.75 J

KE = 197.4 KJ

To convert a kilojoule value to a kilocalorie value, divide the kilojoule value by 4.814

KE = 197.4 KJ

KE = 197.4 / 4.814

KE = 41 Kcal

Therefore,

a ) Thermal energy generated by the brakes as a result = 197.4 KJ

b ) In kilocalories = 41 Kcal

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a) the acceleration of the car = -2.75 m/s

b) d = 198 meters. Therefore, the squirrel would survive.

c) the car moving at 100 meters with a speed of 23.22m/s

What is acceleration ?

acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Use the kinematic equation to solve for the acceleration:

v = u +at

v = final velocity

u = initial velocity

a = acceleration

t = time

In this instance, the final velocity is 0 because he comes to a stop. We can solve for the acceleration by plugging in the given values:

0 = 33 + (12)a

0 = 33 + 12a

-33 = 12a

-33 / 12 = a  --> a = -2.75 m/s²

b) Find the amount of distance necessary to stop. Use the formula:

v^2 = u^2 + 2ad

d = distance

Plug in the values:

0² = 33² + 2(-2.75 · d)

0 = 1089 - 5.5d

-1089 = -5.5d

d = 198 meters. Therefore, the squirrel would survive.

c)

Find the velocity at 100 meters by using the same formula as before:

v^2 = u^2 + 2ad

However, in this instance, we are solving for the final velocity. Plug in the given points to solve:

vf² = 33² + 2(-2.75 · 100)

vf² = 1089 + (-550)

vf² = 539

vf = √539

vf ≈ 23.22 m/s.

the car moving at 100 meters with a speed of 23.22m/s

a) the acceleration of the car = -2.75 m/s

b) d = 198 meters. Therefore, the squirrel would survive.

c) the car moving at 100 meters with a speed of 23.22m/s

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If the distance between two objects is decreased to one fourth of the original distance, then the new force of attraction between the objects will be 16 times the initial force.

From Newton's law of universal gravity, the force of attraction between two objects is given as:

F = GM₁M₂ / r²

Where

Obtaining a relationship between the force of attraction and the distance, we have:

F = GM₁M₂ / r²

Cross multiply

Fr² = GM₁M₂

GM₁M₂ = constant

F₁r₁² = F₂r₂²

With the above formula, we can obtain the new force of attraction as follow:

F₁r₁² = F₂r₂²

F × r² = F₂ × (0.25r)²

Fr² = F₂ × 0.0625r²

Divide both side by 0.0625r²

F₂ = Fr² / 0.0625r²

F₂ = F / 0.0625

F₂ = 16F

Thus, the new force of attraction is 16 times the initial force.

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ANSWER

EXPLANATION

To find the centripetal acceleration, we have to apply the formula for centripetal acceleration:

where v = velocity of the vehicle

r = radius of the circular path

Therefore, the centripetal acceleration is:

That is the answer.

In order  to make the electromagnet lift more paperclips, the group can add more wraps of wire around the nail; option D

Electromagnets are materials that work on the principle of electromagnetism.

Electromagnets possess both electric and magnetic properties and are produced as a result of the interaction of the electrical and magnetic fields.

The strength of electromagnets area affected by the following:

The rate of change of flux changeinresilience the field - the strength of electromagnets increases with electromagnetsincreasethe change in the rate of change of flux

the number of turns of the coil - the greater the turn of the ring, the stronger the electromagnetic field produced.

the material of the core - when the material of the core is made of good conductors, the strength of the electromagnetic field produced increases.

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The surface can only withstand a pressure Face A (50cm × 30cm) and Face C (50cm × 15cm) as the surface can only withstand a pressure of 0.25 N/cm³.

The physical force used to apply pressure to an object is defined as such. Per square inch of an object, a force is applied perpendicularly to its surface. For pressure, the fundamental formula is F/A. (Force per unit area). The Pascal is the unit of pressure (Pa).

The four different types of pressure are absolute, atmospheric, differential, and gauge pressure. Have you ever noticed that when you use a straw to drink something, the air actually gets suked out? In reality, you're applying "Pressure" as you drink the beverage.

A box has the dimensions of 50 cm × 30 cm × 15 cm

Let each face be A, B and C

The weight of the box = 150 N

Formula for pressure is

P = F/A

To find out which face of the box can withstand a pressure of 0.25 N/cm

we need find the area of each face and find its pleasure

Face A = 50 cm × 30 cm

Area A = l × b

            = 50 × 30

            = 1500 cm²

Pressure A = 150/1500

                  = 0.1 N/cm³

                    0.25 > 0.1

The surface can definitively withstand the pressure of Face A

Face B = 30 cm × 15 cm

Area A = l × b

            = 30 × 15

            = 450 cm²

Pressure A = 150/450

                  = 0.3 N/cm³

                    0.25 < 0.3

The surface could not withstand the pressure of Face B

Face C = 50 cm × 15 cm

Area A = l × b

            = 50 × 15

            = 750 cm²

Pressure A = 150/750

                  = 0.2 N/cm³

                    0.25 > 0.2

The surface can definitively withstand the pressure of Face C

Thus, The surface can only withstand a pressure Face A (50cm × 30cm) and Face C (50cm × 15cm) as the surface can only withstand a pressure of 0.25 N/cm³.

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The relative density of lead is 11.3 . If the density of water is 1000 kg / m³, then the density of the lad would be 11300 Kg / m³.

It can be defined as the mass of any object or body per unit volume of the particular object or body.

ρ = m /v

As for the given problem, The relative density of lead is 11.3. The density of water is 1000 kg / m³, then the density of the lad would be 11300 Kg / m³

The density of the lead = Relative density of lead × density of water

                                = 1000 × 11.3

                                =11300 kg / m³

Thus, the density of the lad would be 11300 Kg / m³ .

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The density of a block of aluminum that has a volume of 15.0 cm³ and a mass of 40.5 g is 2.7 g/cm³ .

Density is the mass of a material substance per unit volume. Its SI unit is k g /m³ . Mathematically it is given as,

d = M/V,

where d is density,

M is mass and V is volume

Grams per cubic centimeter are a typical unit of measurement for density. Density of a substance is the characteristics of that substance

The density of a block of aluminum that has a volume of 15.0 cm³ and a mass of 40.5 g is 2.7 g/cm³.

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This type of system is a third class lever. FEL where fulcrum, effort and load comes in an arrangement.

Lever  is a simple machine in which the fixed arms are arranged at a fixed point known as fulcrum. There are three types of lever system: first class Lever system, second class lever system and third class lever system. In the first class lever system there is an arrangement like the see saw. In this arrangement the fulcrum is in center and both the arms are like a seesaw. In the second class lever system, output force was between input force and fulcrum. In the third class lever system input force is between output force and fulcrum. 

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The Total time taken for the signal to be transmitted and received after reflecting is 0.261 seconds.

Speed of sound in seawater = 1530m/s.

Total distance travelled by the sound = 200m [ toward fish ] + 200m [ away                                                                                                            from fish ]

Total distance = 400m

As, Speed = [tex]\frac{ Total Distance}{Total Time}[/tex]

     Total Time = [tex]\frac{Total Distance}{Speed}[/tex]

     Total Time = [tex]\frac{400}{1530}[/tex]

  ∴ Total time = 0.261 second

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The new speed with respect to the ground is 512 m/h.

We can tell that is speed is the rate at which the velocity changes with respect to time. In this case, we can see that the jet airliner moving initially at 103 mph (with respect to the ground) to the east moves into a region where the wind is blowing at 441 mph in a direction 19° north of east.

Hence;

→ The east component =  103 + 441 cos(52) = 375 m/h

→ The north component = 441 sin(52) = 348  m/h

We can now get the new velocity by the use of;

√( 375)^2 + (348)^2 =

= 512 m/h

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The velocity of the target ball after the collision is 1.4 m/s and the the mass of the target ball is 1.832 kg.

Define the terms velocity and mass.

By taking into account how long it takes the body to move, we may relate these three using the concept of velocity, which always ensures that the body is in motion. Since mass is a constant quantity, it has no effect on the body's velocity, yet a body in motion has kinetic energy. The kinetic energy is proportional to both velocity and mass.

Let us consider m1 and m2, v'1 and v'2 be the initial masses and velocities respectively and m1 and m2, v1 and v2 be the masses and velocities after Collison.

By law of conservation of momentum,

m1v'1+m2v'2 + m1v1+m2v2

Substitute the known values,

v'1 = 5.2 m/s

v1 = 3.8 m/s

v'2 = 0

Therefore,

0.285×5.2+0 = 0.285×(-3.8)+m2v2

1.482+1.083 = m2v2

m2v2 = 2.565 kg m/s       (1)

Inelastic collision kinetic energy of the system is conserved.

1/2 m1v'1^2+1/2 m2v'2^2 = 1/2 m1v1^2+1/2 m2v2^2

m1v'1^2+m2v'2^2 = m1v1^2+m2v2^2

0.285×(5.2)^2+ m2×0^2 = 0.285×(-3.8)^2+m2v2^2

7.7064+0 = 4.1154+m2v2^2

m2v2^2 = 7.7064 - 4.1154

m2v2^2 = 3.591     (2)

From equation (1) and (2)

m2v2 = 2.565 kg m/s

(m2v2)v2 = 3.591

(2.565)v2 = 3.591

v2 = 3.591/2.565 = 1.4 m/s

and

m2v2 =2.565 m/s

m2(1.4) = 2.565

m2 = 2.565/1.4 kg

m2 = 1.832 kg

Therefore, the velocity of the target ball after the collision is 1.4 m/s and the the mass of the target ball is 1.832 kg.

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Answer:

With new information you can form a new hypothesis.

Explanation:

Answer:

1loaf = 435litres of water

3loaf = 3045 litres of water

1305

The correct answer is 49 minutes. Option A.

A destination can describe where you are going. Travelers destined for Paris or any place is known for a particular purpose. B. A hip new music club for indie rock fans. A place where someone goes, or where something is sent or received. We arrive at our destination, tired and hungry.

The package arrived at its destination two days later. He likes to travel to remote and exotic places. By the time he reached his final destination, he passed through three states. A tourist destination is a city town or other area that is heavily dependent on tourism revenue or a rural city or place that is marketed as a tourist destination or markets itself.

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The driver takes 1.43s in air. the horizontal range is 2.86m .the final vertical velocity is -14.014m/s.

It is the distance travelled by the projectile in the horizontal direction.

it is defined as the rate of change of displacement in a unit second.

unit of velocity is m/s.

mathematically,

v=s/t

Given,

A driver jumps off the 10 meter platform at a swim competition.

They are moving 2 m/s horizontally as they leave the diving platform.

Thus, Height = h = 10 m

initial velocity = u = 2m/s

Thus, according to the formula of time of descent if projectile fired horizontally,

t =√(2h/g)

t = √ {(2×10)/9.8}

t= 1.428 s

t = 1.43s

According to the formula of horizontal range,

x = u×√(2h/g)

x = u×t

x = 2×1.43 = 2.86m

According to the formula of vertical velocity,

v = -gt

v= -(9.8×1.43)

v = -14.014m/s

Hence, the driver takes 1.43s in air. the horizontal range is 2.86m .the final vertical velocity is -14.014m/s.

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Answer:

20n

Explanation:

20 n

the basic principles of exercise  is seen as the reasons why training frequently and regularly is crucial if you as a person want to enhance your performance and they are due to the principles of specificity, also progression, overload, adaptation, as well as reversibility. It  apply to walking as it helps to improve balance.

The most crucial idea in exercise is thought to be the overload principle. Simply put, it indicates that your body will adjust to the demands you place on it.

For instance, physiological changes will occur when you lift a large weight that you haven't done before or when you finish a strenuous aerobic workout that places new demands on your heart and lungs, making it easier for you to do this the following time.

Your cardiovascular system is gradually revved up during a warmup by increasing body temperature and boosting blood flow to your muscles.

Warming up may also assist lower injury risk and muscular discomfort. After working out, you should cool down to allow your heart rate and blood pressure to gradually return to normal.

A Good Warm-Up and Cool-Down tips are:

Before stretching, all the muscles need is five to ten minutes of gentle exercise, like a brief walk. After an aerobic or weight-training activity, you can stretch as well.

Lastly, The good stretches for walkers are:

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Answer:

Maxwell-Ampere Law

Explanation:

I took from what I remembered

Hope this helps tho <3

The helicopter's horizontal distance from the point of takeoff is 979 m after the two legs.

For the first leg,

The length of the path is d = 294 m and the helicopter takes off at an angle of θ = 59.4°

Then,

dₓ = d cos θ

dₓ = 294 × cos 59.4°

dₓ = 147 m

For the second leg,

The length of the path is:

d = 849 m

and the angle of flight is θ = 10.5°.

So,

dₓ = d cos θ

dₓ = 849 × cos 10.5°

dₓ = 832 m

Therefore,

The total horizontal distance will be:

= dₓ ( 1st leg ) +  dₓ ( 2nd leg )

= 147 + 832

= 979 m

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Two representations that are most consistent with the model of an atom that uses probability to locate electrons are :

1. Quantum mechanical model

2. Bohr's model

The probability of an electron is represented as electron probability function and is written as - 4πr2drψ2, where ψ is complex conjugate. The quantum mechanical model explains the probability of finding an electron in the three-dimensional space around the nucleus. It is based on solutions of the Schrödinger equation. The Schrödinger model assumes that the electron is a wave and  describes the space regions where electrons are most likely to be found.

The energy E of the quantum is related to the frequency ν by E = hν, where h is Planck's constant.

Bohr's model consists of a small nucleus that is positively charged and surrounded by negative electrons moving around the nucleus in the orbit. Bohr found that an electron positioned away from the nucleus has more energy than the electron which is closer to nucleus.

l = nh /2π  ; where,

l= angular momentum

n= principal quantum number

h=Planck's constant

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The efficiency of a single movable pulley is not 100 % because the applied load is half of the load to be lifted.

MA = Fo / Fi

MA = Mechanical advantage

Fo = Output force

Fi = Input force

In a single movable pulley,

Fi = 0.5 Fo

MA = Fo / 0.5 Fo

MA = 2

Efficiency = MA * 100

Efficiency = 2 * 100

Efficiency = 200 %

A movable pulley does no have a fixed axis of rotation. In a movable pulley the forces are multiplied at the other end. So the effort required to pull the load is easier than a fixed pulley.

Therefore, the efficiency of a single movable pulley is not 100%

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Energy is conserved by energy being transformed through one form or different forms.

Energy can change from one form to another, but cannot be destroyed.

Energy cannot be created or destroyed.

Similar to this, according to the rule of conservation of energy, energy cannot be generated or destroyed. For instance, kinetic energy is converted to potential energy when a toy vehicle is rolled down a ramp and collides with a wall.

There are three fundamental quantities in mechanics that are preserved. They are power, forward motion, and angular momentum. It can come as a surprise to you that energy is a conserved quantity if you've read instances in prior pages, such the kinetic energy of charging elephants.

Solar heat energy from the sun is used by us.

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The current (or flow of electrons) will rise in direct proportion to the voltage (or electrical pressure) in a circuit; for example, doubling the voltage will result in a doubling of the current flow.

Simply put, voltage—also known as electromotive force—is the amount of energy in one charge. Voltage, then, is the variation in electric potential between two places. Simply put, current is the pace at which electric charge flows.

Voltage is occasionally referred to as the "push" or "force" of the electricity; while this isn't quite accurate, it might help you visualize what is happening. Current cannot flow without voltage, yet voltage can exist without current.

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