When you amplify something, you decrease it; in the case of sound, you decrease the volume of the sound.
True
False

Answer:Combust Methane

Reaction

Explanation:Seperate

The distance that the car travel during each time is:

During this time, the car will travel a total distance of 250 meters.

This can be calculated by using the equation for displacement: displacement = initial velocity x time + 0.5 x acceleration x time^2.

Therefore, the displacement of the car after 10 seconds is:

D= (0 x 10 + 0.5 x 5 x 10^2) = 250 meters.

t= 12 sec

D= (0 x 12 + 0.5 x 5 x 12^2) = 300 meters.

t= 15 sec

D= (0 x 15 + 0.5 x 5 x 15^2) = 375 meters.

t= 18 sec

D= (0 x 18 + 0.5 x 5 x 18^2) = 450 meters.

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Two  charged objects are on the y axis. The first object has a charge of Q = + 3 μC and is located at y = 6 cm, and the second object is located at y = 3.0 cm, so the charge on the object is 0.36 μC or 0.40 μC.

The charge on the object is dependent upon many factors, and to calculate the charge, Coulomb's Law is applied, which is F=kQq2/[tex]{r}^2[/tex], as here the r = 3 cm,  Q = 3 μC, F = 32.16 N, k= 9×[tex]{10}^9[/tex] [tex]{Nm}^2/{c}^2[/tex] . So the q2 is derived from this and that is the charge.

Hence, two charged objects are on the y axis. The first object has a charge of Q = + 3 μC and is located at y = 6 cm, and the second object is located at y = 3.0 cm, so the charge on the object is 0.36 μC.

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The energy consumed by the motor is 1008000 J.

Energy is the ability of the capacity to perform work.

To calculate the energy consumed by the electric motor daily, we use the formula below.

Where:

Substitute these values into equation 1

Hence, the energy is 1008000 J.

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The proton's speed as it passes through point P is Vp = 1.72 × 10^6 m/s

A proton is described as a stable subatomic particle, symbol p , H⁺, or ¹H⁺ with a positive electric charge of +1 e elementary charge.

From the question have the following parameters

A fixed charge, Q = -10 nC

Initial position of charge particle, proton (q), ro = 3mm

Final position of charge particle, proton (q),

rp = 4mm

Initial velocity of charged particle,

vo =2.8 x 10^6 m/s

Let

vp be the final speed of proton

We then Apply conservation of Energy:

Initial (Potential + kinetic) Energy = Final (Potential + kinetic) Energy

kQq ro + 1/2mVo² = kQq rp + 1/2mVp²

m = 1.67 x 10^-27

Substituting the values and converting from mm to meters, we have that)

Vp = 1.72 × 10^6 m/s

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The charm quark got its name because it was the third type of quark discovered, after the up and down quarks. The naming convention for quarks is that they are named based on the order in which they were discovered. The first quark to be discovered was the up quark, followed by the down quark, and then the charm quark. The "charm" name was chosen as a playful reference to the way the particle was discovered, as well as its role in the symmetry of the strong nuclear force.

The nuclear force is the force that holds the protons and neutrons in the nucleus of an atom together. It is a very strong force, much stronger than the electromagnetic force that holds the electrons in their orbits around the nucleus. The nuclear force is responsible for the stability of atomic nuclei and for the energy released in nuclear reactions. It is a short-range force, acting only over distances of about 1 to 2 femtometers (10^-15 meters).

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The box's kinetic energy is 845.2J when an 80.0 N box is pulled 20.0 m up a 30.0-degree ramp by a force of 115 N if the coefficient of kinetic friction between the box and the ramp is 0.22.

We know that,

the theorem states the relationship between work and energy. This theorem states that the change in kinetic energy is equal to the work

W = ΔKE = Force × displacement

Now given that,

Weight of the box, w = 80N

Length of the ramp, l = 20m

Angle, θ = 30⁰

Applied force on the box, F = 115N and

coefficient of the kinetic friction, μ = 0.22

first, we find the net force acting on the box

ΣF = Fsinθ - f

here, f is the frictional force

ΣF = Fsinθ - μwcosθ

or ΣF = 115(sin30°) - 0.22(80)cos30° = 115(0.5) - 17.6(0.86)

or ΣF = 42.26N

Now, by applying the work-energy theorem

W = ΣF×d = (42.26N)(20m) = 845.2J

Kinetic energy = 845.2J

Therefore, The box's kinetic energy is 845.2J when an 80.0 N box is pulled 20.0 m up a 30.0-degree ramp by a force of 115 N if the coefficient of kinetic friction between the box and the ramp is 0.22.

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The complete question is:

An 80.0 N box is pulled 20.0 m up a 30.0-degree ramp by a force of 115 N. If the coefficient of kinetic friction between the box and the ramp is 0.22, what is the box's kinetic energy?

The upward component of that force is 1039.23 N.

The parallel component of that force is  600N.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body.

The magnitude of force = 1200 Newtons.

Angle with respect to the ocean = 60°.

The upward component of that force is  = F sin60° = 1200×sin60° N = 1039.23 N.

The parallel component of that force is  = F cos60° = 1200× cos60° N = 600N.

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Answer:
I believe this is what you was asking for.

Explanation:

A. The temperature in °C when the reading on the thermometer is 80 is 60°C.

B. The reading when the temperature is 60°C on this thermometer is 136.

Answer:

C.Magnitude

Explanation:

Because Vector means that a thing have direction and magnitude.

As a result, claim I is accurate. According to this formula, a temperature increase of 1 degree Celsius is comparable to a temperature increase of 9/5 degrees Fahrenheit.

The Celsius scale, sometimes known as the centigrade scale, is a temperature scale based on the water's freezing point at 0°C and boiling point at 100°C. A temperature scale called the Fahrenheit scale is based on the fact that water freezes at 32°F and boils at 212°F.

The relationship between Celsius and Fahrenheit is inversely proportional. The temperature on the Fahrenheit scale rises as the temperature does on the Celsius scale, and vice versa. The change from C to F is therefore 100/180, or 5/9. It is 180/100 or 9/5 from F to C.

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The resultant of the vectors is equivalent to 28.1 meters at an angle of 27.5° with " - x axis ".

Given is that you walk 25m straight west and then 13m straight north.

The resultant of the vectors is equivalent to -

D² = D(x)² + D(y)²

D² = (25 x 25) + (13 x 13)

D² = 794

D = 28.1 meters

tan {Ф} =  D(y) / D(x)

tan {Ф} = 13/25

{Ф} = tan ⁻¹(13/25)

{Ф} = 27.5°

Therefore, the resultant of the vectors is equivalent to 28.1 meters at an angle of 27.5° with " - x axis ".

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It is possible that students may have misunderstood the information taught by Ms. Kontos about human vision due to various factors such as prior knowledge, attention, motivation, and the way the information was presented.

To improve on this lesson and help students gain a more accurate understanding of human vision, two strategies based on contemporary principles and theories of learning and cognition are:

Incorporating visual aids and hands-on activities: By using visual aids such as diagrams, videos, and animations, students can better understand the complex processes involved in human vision. Hands-on activities such as creating simple models or simulations of the eye can also help students connect what they have learned to real-life situations.

Encouraging metacognition: Encouraging students to think about their own thinking processes, or metacognition, can help them understand their own learning style and identify areas where they need further clarification. By encouraging students to ask questions, discuss what they have learned, and reflect on their own understanding, they can build a more accurate understanding of the topic.

These strategies can help students gain a deeper and more accurate understanding of human vision and improve their learning outcomes.

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(a) The work done by Paul is 1,575 J.

(b)  The work done on the object by the block and tackle is 1,311.38 J.

(c) The mechanical advantage of the block and tackle is 3.59.

(d) The efficiency of the system is 83.26%.

The work done by Paul is calculated as follows;

W = F x d

where;

W = ( 375 N ) x ( 4.2 m )

W = 1,575 J

The work done on the object by the block and tackle is calculated as follows;

W = L x d

where;

W = ( 1345 N ) x ( 0.975 m )

W = 1,311.38 J

The mechanical advantage of the block and tackle is calculated as follows;

M.A = Load / effort

M.A = ( 1345 N ) / ( 375 N )

M.A = 3.59

The efficiency of the system is calculated as follows;

E = ( output work / input work ) x 100%

E = ( 1,311.38 J / 1,575 J ) x 100 %

E = 83.26 %

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Answer:  40 cm/s.

Explanation:

To solve this problem, we need to use the formula for velocity, which is velocity = distance/time.

We are given the time it takes for one wave to pass the pile of pickerel as 0.50 seconds and the distance that the pickerel protrude along the beach as 20 cm. Plugging these values into the formula gives us:

velocity = distance/time

= 20 cm / 0.50 s

= 40 cm/s

Since we are given the value of g with two significant digits, we should round our answer to the nearest whole number, giving us 40 cm/s.

When contact is made with the battery, the voltage across the capacitor is zero.

The true choice is C.

The voltage across the capacitor is given by the formula V = Q/C. Voltages of other elements can be found using Kirchoff's first law. The current through the capacitor must always decrease and end at zero because the charge cannot continue to flow through the capacitor.

An RC circuit is one in which a resistor and capacitor are connected in series with a voltage source such as a battery. Like all purely resistive circuits, this RC circuit allows electric current to flow with one change. Batteries connected in series with a resistor produce a constant current.

So, the voltage on the resistor and capacitor connected in series which has the same value will produce a zero-voltage value.

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The flow velocity in km/h is 3 km/hr if the engine duty remains constant.

The direction of movement of the body or item is defined by velocity. Speed is fundamentally a scalar number. Velocity is, in essence, a vector quantity. It is the pace at which distance changes. It is the displacement rate of change.

Here,

Now, let's assume the velocity of boat to be v in still water.

While going down stream its velocity will be v + u

Velocity of boat relative to raft => v + u - u = + v after 1 hr distance between them will be v km.

In 1 hr raft moved by u× 1 = u km

Now while coming back

vb = -(v - u)

vr = + u

vb/r = - (v - u) - u = - v

So we see here that the relative velocity of boat with respect to raft is same as while going downstream or upstream both.

distance between them = v km.

So time in which they meet =

v/v=1 hr

So in next 1 hr they meet at some point,which will be 6 km away from A

Also in next 1 hr the raft would have traveled another u km. so total distance of meeting point from A in 2u = 6 ⇒ u = 3 km/hr

Flow velocity = speed of raft = 3 km/hr

The flow velocity in km/h assuming the duty of the engine to be constant is 3 km.

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Answer:

The speed of an object in uniform circular motion can be calculated using the formula:

v = (G * M / r)^0.5

Where:

v is the speed of the object

G is the gravitational constant (6.67 × 10^-11 N*m^2/kg^2)

M is the mass of the central object (in this case, the Earth)

r is the distance between the object and the center of the circular orbit (in this case, the distance between the rocket and the Earth)

Plugging in the given values, we have:

v = (6.67 × 10^-11 Nm^2/kg^2 * 5.97 × 10^24 kg / 8 × 10^6 m)^0.5

= (3.96 × 10^-5 Nm/kg)^0.5

= 1.99 × 10^-2 m/s

Therefore, the speed of the rocket under uniform circular motion is approximately 0.0199 m/s, which is answer C: 2.04 x 10-3.

Explanation:

The correct answer would be that the force on the car to stop the car will be 7333 N.

The push or pull on a mass-containing item changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. Force is used to describe a body's tendency to alter or change its condition as a result of an external cause. When force is applied, the body may also alter its size, shape, and direction. kicking a ball, pushing and tugging on the door, or kneading bread are a few examples.

We have specified that the automobile weighs m = 1000 kg.

initial vehicle speed, 22m/sec

The vehicle's ultimate velocity is v = 0 m/sec

when it comes to a stop. Given as t = 3 sec, the time is.

According to the first equation of motion, v = u+at.

So, a= v-u/t = 0-22/3 = -22/3 = -7.33m/sec

Force F = ma, according to Newton's Second Law.

so force, F= 1000 x 7.333= 7333N

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The difference in the wavelength of the lights in the glass is 147.88 nm.

The difference in their wavelengths inside the glass is calculated by applying the following formula as shown below.

The wavelength of light A inside the glass is calculated as;

nA = ( 656.3 nm ) / ( 1.516 )

nA = 432.9 nm

The wavelength of light B inside the glass is calculated as;

nB = ( 435.8 nm ) / ( 1.529 )

nB = 285.02 nm

difference in wavelength = 432.9 nm - 285.02 nm = 147.88 nm

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Answer: I think it’s b

Explanation:

Total work done is 900KJ.

Here, Kinetic energy of car at rest is 0.

When it accelerates from rest to a speed of 30 m/s, it's kinetic energy is :

                                               K.E = 1/2mv^2

Given, m = 2000Kg and v = 30 m/s

Putting these values in above equation, we get: K.E = 900000J = 900 KJ

We know that Work done is change in Kinetic energy.

So, W = 900KJ

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The nerve trunk either response maximally or not respond at all. - this  is true about all or non-rule. Option (D) is correct.

The all-or-none law in physiology states that a single nerve fiber will always respond maximally to stimulation and generate an electrical impulse with a single amplitude.

The height of the impulse will remain constant even if the stimulus's intensity or duration are raised. The nerve fiber either responds fully or not at all.

Thus, either the nerve trunk responds fully or not at all.

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Useful energy is transferred away from the MP3 player by light and sound.

The law of conservation of energy states energy can neither be created nor destroyed but can be transformed from one form to another.

This implies that energy can be converted from one form to another such as;

The MP3 player uses the energy from electricity supplied to it to play music. The basic energy conversion process that occurs to achieve this include;

electricity → light energy → sound energy → heat energy.

Thus, MP3 player conserves energy by converting the energy supplied to it into useful energy.

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Simple sugars and amino acids are absorbed into the blood capillaries of the small intestine. Lipids, on the other hand, are absorbed into the lacteals of the small intestine. The lacteals are small, specialized tubes that are part of the lymphatic system and are responsible for transporting absorbed lipids away from the small intestine and into the bloodstream.

Answer:

small intestine

Explanation:

After digestion, absorption of amino acid takes place in the small intestine which is a principal organ for the absorption of nutrients. The capillaries of villi collect the amino acid and sugars taken up by the villi into the bloodstream through diffusion. Villi are meant for absorption in the small intestine.

Impulse needed to stop the 1300 kg car driving at a speed of 18 km/h or 5 m/s is 6500 kg m/s.

Impulse of a moving body is the change in its momentum. The ability to make the applied force increasing the displacement of a body is called its momentum. It is the product of mass and velocity of the body.

Impulse is the product of force and time. Here, the impulse we need to calculate is required to stop the car. Hence the final momentum is zero.

Given = 1300 kg

velocity = 18 km/h = 5 m/s

then initial momentum = 1300 kg × 5 m/s = 6500 kg m/s.

Final momentum = 0

thus, impulse  = 6500 kg m/s - 0 = 6500 kg m/s

Therefore, the impulse of the car needed to stop it is 6500 kg m/s against the momentum.

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Answer:

(C) Has the symmetry for a direct application of Ampere's Law:

B * 2 π * a = μ0 * I

You know the radius a of the loop and I the current in the loop.

Answer: 7 newtons in the negative direction

Explanation:

If the directions measured are only negative and positive then the resultant should just be the addition of the two vectors.

Adding the vectors we have (+3N) + (-10N)

This gives us a final answer of (-7N) or 7 newtons in the negative direction