Why does the brightness of a bulb not change noticeably when you use longer copper wires to connect it to the battery?.

Answer:

Explanation: We need to find the equivalent of the given imaginary number with 22 power:

Using exponent properties, we can rearrange this as:

The impedance of the circuit having a resistor of resistance 40Ω and a capacitor of capacitance 132.6F is 2.65Ω

The potential of the circuit = 120 V

The frequency of the circuit = 60 Hz

The capacitance of the capacitor = 132.6 F

The resistance of the resistor = 40Ω

The impedance of this circuit can be found using the formula

                           Z = R / (RωC + 1)

where Z is the impedance

          R is the resistance of the resistor

          C is the capacitance of the capacitor

          ω is the angular frequency

First, let us find the angular frequency
                         

                     ω = 1/2πf

where f is the frequency

                     ω = 1/ 2 x 3.14 x 60

                         = 1 / 376.8

                         = 0.00265

So, let us substitute the known values in the impedance formula, we get

                      Z = 40 / ( 40 x 0.00265 x 132.6 +1)

                         = 40 / (14.05 +1)

                         = 40 / 15.05

                        = 2.65Ω

Therefore, the impedance of the circuit is 2.65Ω

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The  SR-71 reconnaissance aircraft would take more time in order to reach the eastern boarder.

Let us recall that velocity is a vector quantity. This implies that velocity would have a magnitude as well as a direction. The magnitude of the velocity as well as its direction is important in this discussion.

We are told that An SR-71 reconnaissance aircraft, the world's fastest aircraft, is flying east at 3000 km/h through a crosswind of 300 km/h. On the other hand, we are also told that the the border lies along a straight north/south line. This is gong to inform the length of time that would be taken owing to the cross winds.

Given that the boarder is on a straight line, we can see that due to the crosswinds, the plane is mandated to use a cross oath which would take a longer time.

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Wave crest is the highest part of a progressive wave above average water level This statement is True.

The valley between wave crests that are lower than the average water level is known as the wave trough. Wave length is the distance horizontally between two troughs, whereas wave height is the vertical distance between a wave crest and the adjacent troughs.

The top of the waves is called as the crest. The lowest point is called the trough. The storm surge is the highest - end change in elevation between both the crest and the trough, whereas the wave length, often known as the wavelength, is the distance between two consecutive crests (or troughs).

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A Chromebook is accelerated out a widow at 8m/s². The amount of  force was needed for this acceleration is (F)=10.88 N

When a object start with a velocity and end with other velocity, The difference of velocity divided by given time is called the acceleration. This is a vector quantity.

To calculate the force we are using the formula here is,

F=ma

Here we are given,

m= The mass of the Chromebook we know = 1.36 kg.

a = The acceleration of the object = 8 m/s².

We have to calculate the value of force = F

Now we put the values in the equation we get,

F=ma

Or, F = 1.36*8

Or, F=10.88N

From the above calculation we can say that, The amount of  force was needed for this acceleration is (F)=10.88 N

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Answer: The amount of force needed for the acceleration is F=10.88N

Explanation:

acceleration is the rate of change of velocity over time, both in terms of speed and direction. It is a vector quantity.

A mass-containing object's change in velocity is referred to as a force when a push or pull is applied to it. A body can change its state of rest or motion when an external force acts on it. It is directed and has a magnitude.

using formula, F=ma

where, F=force ; m=mass ; a= acceleration

given quantities are:

known mass(m) of Chromebook= 1.36kg

acceleration (a)= 8m/s²

on putting the values in the formula we get,

F=ma

F=1.36*8

F=10.88N

therefore amount of force needed for this acceleration of 8m/s² is 10.88N

It defines the direction in which the body or item is moving. In its basic form, speed is a scalar quantity. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.

Speed is the rate of movement of an object along a path in time.

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The amount of time it would take this physics student to reach the bottom of the slope is 15 seconds.

In order to determine the amount of time it would take this physics student to reach the bottom of the slope, we would apply the second equation of motion. Mathematically, the second equation of motion is given by:

S = ut + ½at²

Where:  

Making time, t the subject of formula, we have:

Time, t = 1/a[-u ± √(u² + 2aS)]

Substituting the given parameters into the formula, we have;

Time, t = 1/2.0 × [0 ± √(0² + 2 × 2.0 × 225)]

Time, t = 1/2.0 × [0 ± √(900)]

Time, t = 1/2.0 × [30]

Time, t = 15 seconds.

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The power used is 2W.

Power is used to describe the rate at which energy is consumed. In other words, it's a measure of how quickly you're using energy. Whether you're running up a flight of stairs in 5 seconds or slowly climbing the same flight of stairs in 40 seconds, you'll get the same amount of work done. Globally we get most of our energy from oil followed by coal gas and hydropower.

It turns out that the work done is equal to the force or the component of the force in the direction of displacement times the displacement. So the force here is due to a gravitational acceleration of 5g g=9.8ms^-2 and a displacement of 5 meters. So the work done equals 245J. Power comes from the Latin word potere which means can. But those with power go far beyond their capabilities - they can wield a lot of power.

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When 20 Coulomb of charge flows past a certain point in 5 seconds. The strength of an electric current will be (I)= 4A

When a battery is connected in a wire there is a electron flow from negative to positive portal. To maintain the value there is a flow which flows from positive to negative portal and help the light to glow that called the electric current. It can be measured in Ampere.

To calculate the electric current we are using the default formula of electric current that is, I=Q/t

Here we are given,

Q= The charge of the electric structure. = 20C.

t= The time being the current is flowing. = 5S.

We have to calculate the strength of an electric current= I

Now we put the values in the known equation, we get,

I=Q/t

Or, I=20/5

Or, I=4A

From the above calculation we can say that, the strength of an electric current will be (I)= 4A

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The drag force is inversely proportional to velocity squared. Consequently, we may express the force ratio as,

F1 / F2 = V²1 / V²2

We can write values in place of them.

2.3 / F2 = 20² / 35.6²

F2 = 7.29 N

As a result, at 35.6 m/s, our drag will be 7.29 N.

The drag force is the force a solid body experiences while it is moving in relation to a fluid. Drag, for instance, on a moving ship or a flying jet. Thus, a drag force is the resistance a body traveling through a fluid, such as air or water, produces.

One example of the drag force, which is the force that objects experience when moving through a fluid, is air resistance (liquid or gas). Drag force is reactive, like kinetic friction, in that it only exists when an object is moving and it faces away from the direction of the object's motion through the fluid.

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As a noun, increase can mean the same thing as growth.

Increase has a number of popular synonyms, including augment, enlarge, and multiply. While all of these verbs indicate "to make or become greater," "increasing" denotes progressive expansion in size, amount, or intensity when used in the passive. When employed in the active, however, it could also suggest simple addition rather than progressive growth. Increase can be used as a noun to denote growth.

To decrease is to drop or decrease. Reduce your speed if you are going over the speed limit to avoid receiving a ticket. Students frequently ask teachers to provide less homework. Increase, which meaning to raise, is the polar opposite of reduction.

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Answer:

a way in which something is usually done, especially within a particular area or activity."the woman who overturned so many conventions of children's literature"

OR. 

an agreement between countries covering particular matters, especially one less formal than a treaty."the convention, signed by the six states bordering on the Black Sea, aims to prevent further pollution"

Explanation: Depends on what your using it for. Similar words:

agreement /

accord /

protocol /

compact /

pact /

treaty /

concordat

The acceleration of the plane is obtained to be  1393 m.

Let us recall that the term acceleration is used to describe the change in the velocity of the object with time. We must now turn to the equations of the uniformly accelerated motion.

Now we have;

s= ut + 1/2at^2

s = distance covered

a = acceleration

t = time taken

u = initial velocity

Assuming that the airplane started from rest then;

s = 1/2at^2

s = 0.5 * 2.30 * (34.8)^2

s = 1393 m

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Answer: What do you need help with?

Explanation: I'm afraid nobody can help you if they don't know how to help you.

A roller coaster starts at the top of a hill at v₁ =0m/s at a time of t₁=0/s . When it reaches the bottom of the hill at t₂=6/s it has a velocity of v₂=36m/s. The roller coaster’s acceleration is 6m/s²

Acceleration is a physics term that means how much the object change its velocity within a given time. It is a vector quantity. It can be measured in m/s², Cm/s².

To calculate the roller coaster’s acceleration we have to use the formula here is,

a=(v₂-v₁)/(t₂- t₁)

Here we are given,

t₁= The initial time of the roller coaster = 0 s

t₂=The final time of the roller coaster = 6 s

v₁ = The initial velocity of the roller coaster= 0m/s

v₂=The final velocity of the roller coaster = 36 m/s

We have to calculate the acceleration of the roller coaster  = a m/s²

Now we put the values in the above equation,

a = (36-0)/(6-0)

Or, a=36/6

Or, a= 6m/s²

According to the calculation, The roller coaster’s acceleration is 6m/s²

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The horizontal component of the truck’s velocity is 24.45 m/s.

The horizontal velocity component (vₓ) describes the influence of the velocity in displacing the projectile horizontally.

The horizontal components of a velocity is the velocity of the object along the horizontal direction.

The horizontal component of the truck’s velocity is calculated as follows;

vₓ = v cosθ

where;

vₓ = 25 m/s  x  cos(12)

vₓ = 24.45 m/s

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Physics uses math because it allows us to calculate useful answers. Making option A the correct answer to the question.

Why do physics uses math?

Physics as a science subject taught in schools, requires a fundamental knowledge in Mathematics because the theories, the widely acceptable laws could be expressed based on Mathematical equations. Physics uses theoretical concepts and practical concepts.

In summary, from the question, physics uses math not because we want Physics to be as difficult as possible, but because explaining and understanding physical phenomenon requires a knowledge of mathematics.

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During vegetative propagation, a new plant grows from parts of the parent plant.

During binary fission, a cell divides to produce a new genetically identical cell.

Asexual reproduction involves fission, budding, fragmentation, and parthenogenesis, whereas sexual reproduction is achieved by combining the germ cells of two individuals. The statement describing asexual reproduction is Offspring are born that have the same DNA as the parent.

Only one parent is needed to produce a child. Includes cell division similar to cell division in mitosis. Asexual reproduction is a form of reproduction in which the offspring produced are exactly like their parents. Also, there is no formation of two different gametes, nor the involvement of two different sexes. In unicellular organisms, mitosis is the mode of asexual reproduction.

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Changing the volume of something like flattening a ball of aluminum foil into the shape of a boat change its density because has a smaller volume compared to its mass.

As folded piece of aluminum is closer to that of a solid piece of aluminum, therefore It has a smaller volume compared to its mass. As it is folded, atoms of aluminum are forced to be compacted together. Hence, it's density is higher and greater than 1.

Objects react quite differently in water because of their density. Aluminum foil ball has more density because its pennies are crowded into a smaller space than in the foil boat. The foil boat has lesser density because it is spread out and filled with air.

Density is used to measure how heavy something is as compared to its size. If an object has density more than water then it will sink when placed in water and if density is less than water then it will float. Density is that property of a substance that doesn't depend on the amount.

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Answer:

Explanation:

Yes, the nucleus contains neutrons along with protons.

Height can be calculated from GPE by mgh.

Gravitational energy or gravitational potential energy is the potential energy that a massive object has due to gravity relative to another massive object. It is the potential energy associated with the gravitational field that is released when  objects fall towards each other.  Gravitational potential energy depends on several things: it depends on the mass of the object, the gravitational acceleration of the object due to the ground, and the displacement of the object from the ground. Gravitational potential energy is measured in joules (J).

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The ball's speed and direction are 3.1 m/s at its lowest point in its trajectory, and it swings to the other side at the same angle.

We are given that,

The weight of the ball = m = 500g

The height of the string = h = 41.0 cm

The pendulum is pulled at the angle of = θ = 25.0°

At the lowest point, we'll suppose that 100% of the motion will convert to kinetic energy. Now, the height difference will be,

Δh = (41.0cm– 41.0cos 2.5°) = 0.41cm

The change in potential difference is given as,

ΔP.E = mgΔh

ΔP.E = 9.8m/s² × 0.50kg × 0.0041 m

ΔP.E = 0.02009J

Then the kinetic energy of the pendulum is given by,

K.E = (1/2)mv²

Therefore , from the law of conservation the potential energy is equal to the kinetic energy of the pendulum and putting the values from the above i.e.

P.E = K.E

P.E = (1/2)(0.50kg)(v²)

v² = (0.02009J)/(0.5)(0.50kg)

v² = 0.08036m/s

v = 0.2834 m/s

Thus the speed of the pendulum would be 0.2834m/s.

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Answer:true

Explanation:i just took the test

Answer:

1.3 Pa

Explanation:

from general gas equation

p1v1/TO =P2V2/T2

Because of the reduced density of the hydrocarbon fluids and gases, oil and natural gas move from sedimentary source rocks to reservoir rocks after their production.

By implication, good reservoir rocks need to have high porosity and permeability. The term "natural gas" refers to a variety of gaseous hydrocarbons produced beneath the surface of the Earth and entrapped in the pores of sedimentary rocks.

Although not always, these natural gases have close ties to the various liquid hydrocarbons, primarily liquid paraffins, naphthenes, and aromatics, which together make up oil.

The following are some characteristics of the depositional environment that have an impact on sedimentary rock properties:

(1) Lithology: This term explains the minerals that make up the crystals that make up sedimentary rock as well as the texture of those crystals. This depositional environment is where these minerals are found.

(2) Structure. Rock can have a variety of structures, including cross-bedding and ripple markings that indicate the direction of wind and water flow.

(3) Fossil content. Sedimentary rocks include fossils that are imbedded in them.

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To enter orbit, a spacecraft leaving the Earth's surface must travel at least 11 kilometers (7 miles) per second, or more than 40,000 kilometers per hour (25,000 miles per hour). One of the most difficult challenges in space travel is achieving escape velocity.

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The time submarine passes a marker that is 125 km from shore is 3.87 hr.

Speed is the directional velocity of an object in motion as a demonstration of its price of alternate in function as discovered from a particular frame of reference and as measured by way of a specific preferred time.

velocity is the top indicator of the placement in addition to the rapidity of the item. it may be described as the distance protected by way of an item in unit time. velocity may be defined as the displacement of the item in unit time.

velocity is the quickness of movement or movement. A synonym is a celerity; a less difficult phrase is pace. In physics, pace especially refers to the dimension of the price and route of an alternate in the function of an item.

calculation:-

velocity = displacement/time

             = 290 / 9

              = 32.22 km/hr

new distance = 125 km

velocity is constant = 32.22 km/hr

time = displacement/velocity

        = 125/32.22

         = 3.87 hr

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The magnetic field, which is defined as a field around a magnet that exerts a magnetic force on electrically charged particles present in the magnetic field, can be characterized as a scalar entity with the sole magnitude in space. The magnetic field can be measured in teslas.

An electric current runs through a wire coil when it is moved over a stationary bar magnet because the electrons are moving due to the magnetic field's force on them.

Consequently, the magnetic force is what causes the current to flow around the coil.

A magnetic field, a vector field that affects an electric current, an electric charge, and magnetic materials magnetically. A force perpendicular to the magnetic field and its own velocity acts on a moving charge in a magnetic field.

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