how can briquette support to save fossil fuel?​

(a). The voltage across the secondary coil is 75.6 V.

(b). Current in the secondary coil is 0.330 times the current in the primary coil. If we knew the current in the primary coil, we could use this equation to find the current in the secondary coil.

To solve this problem, we need to use the transformer equation, which relates the voltage and number of turns of the primary and secondary coils:

\(V_1/V_2 = N_1/N_2\)

where \(V_1\)and \(V_2\) are the voltages across the primary and secondary coils, respectively, and \(N_1\) and \(N_2\) are the number of turns in the primary and secondary coils, respectively.

(a) To find the voltage across the secondary coil, we can rearrange the transformer equation to solve for \(V_2\):

\(V_2 = V_1 * N_2/N_1\)

Substituting the given values, we get:

\(V_2\) = 25.0 V * 834/275 = 75.6 V

(b) To find the current in the secondary coil, we need to use Ohm's law:

I = V/R

where I is the current, V is the voltage, and R is the resistance of the load connected to the secondary coil.

We are not given the value of the load resistance, so we cannot determine the current directly. However, we can use the fact that the transformer is ideal, meaning that it has no losses and the power input is equal to the power output:

\(V_1 * I_1 = V_2 * I_2\)

where \(I_1\) is the current in the primary coil, and \(I_2\) is the current in the secondary coil.

We can rearrange this equation to solve for \(I_2\):

\(I_2 = (V_1 * I_1)/V_2\)

Substituting the given values, we get:

\(I_2 = (25.0 V * I_1)/75.6 V\)

Simplifying, we get:

\(I_2 = 0.330 * I_1\)

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Answer: (A) The number of waves that pass a point in a certain amount of time.  

Explanation:

Electromagnetic waves are categorized according to their frequency f or, equivalently, according to their wavelength λ = c/f. Visible light has a wavelength range from ~400 nm to ~700 nm.

Frequency: Is the number of waves that pass a certain point in a specified amount of time.

Trough: The low point of the wave cycle.

Wavelength: The distance between two successive peaks.

Electromagnetic wave: One of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity.

Answer:

We can use Coulomb's law to solve this problem:

F = k * q1 * q2 / r^2

where F is the force between the two charges, k is Coulomb's constant (k = 9 x 10^9 N m^2 / C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between them.

We know the force F, the distance r, and the magnitude of one of the charges q1. We can rearrange the equation to solve for the magnitude of the other charge q2:

q2 = F * r^2 / (k * q1)

Substituting the values we have:

q2 = (250 N) * (0.15 m)^2 / (9 x 10^9 N m^2 / C^2 * 6.5 x 10^-5 C)

Simplifying:

q2 = 8.65 x 10^5 C

Therefore, the magnitude of the other charge is 8.65 x 10^5 C.

A sound traveling through air at 200 Hz has the same velocity as one traveling at 400 Hz.

The source determines the frequency of the sound wave. However, the density of the medium and the bulk modulus are the only factors that affect the speed of the sound wave. When compared to the speed of sound at 400 Hz, the speed of sound at 200 Hz is therefore constant.

Air and water have different sound propagation rates. The speed of sound in air is around 343 meters per second under normal circumstances, while the speed of sound in water is approximately 1,480 meters per second. Fundamentally, a compression wave moving through a medium is what makes up normal sound.

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Correct Question:

Compared to the velocity of a 400 Hz sound, the velocity of a 200 Hz sound through air is __________.

Answer:

--> Steering wheel applied by the car driver.

-->Opening and closing of a water tap.

-->Winding the spring of an alarm clock.

-->Unlocking the locker by using a key.

-->Opening and closing of a cap of a water bottle, or jug.

Hope this helps you!

the current I1, in amps I1, the current I2, in amps I2, and the current I3, in amps I3, are each 2.40, 1.40, and 1.00 A, respectively.

Kirchhoff's rules and Ohm's law may be used to create a system of equations that will allow us to determine the current I1. We may start by writing the following equation for the outer loop using Kirchhoff's loop rule: ℰ1 - I1(R1 + R2) - I2R2 = 0

At the intersection of R2 and R3, we can then utilise Kirchhoff's junction rule to formulate the following equation: V2 = I2R2 V3 = I3R3: I2 + I3 = I1 R3

Also, we are aware that the voltage across R2 is the sum of the two emfs:

V2 = ℰ2 - I2r2

These equations allow us to find solutions for I1, I2, and I3. When we solve the set of equations, we obtain: I1 = 2.40 A

I2 = 1.40 A\sI3 = 1.00 A

The currents passing through each resistor in the circuit are represented by these values.

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The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:

F = ΔP / ΔT

where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.

Now, let's apply the given values to the above equation.

Final momentum (p2) = mass × final velocity (v2)

p2 = 0.15 kg × (-50 m/s)

p2 = -7.5 kg.m/s

Initial momentum (p1) = mass × initial velocity (v1)

p1 = 0.15 kg × (40 m/s)

p1 = 6 kg.m/s

Change in momentum (ΔP) = p2 - p1

ΔP = -7.5 kg.m/s - 6 kg.m/s

ΔP = -13.5 kg.m/s

Time of collision (ΔT) = 8.0 × 10³ s

Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:

F = ΔP / ΔT

F = -13.5 kg.m/s ÷ 8.0 × 10³ s

F = -1.7 × 10⁻³ N

Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

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The electric iron with a power rating of 500 watts will consume 12 kilowatt-hours (kWh) of electricity when used continuously for 24 hours.

To calculate the units consumed, we need to consider the power rating and the duration of usage. The power rating of the electric iron is given as 500 watts, which is equivalent to 0.5 kilowatts (kW). By multiplying the power rating by the time used (24 hours), we obtain the total energy consumed, which is 12 kilowatt-hours (kWh). This value represents the units of electricity consumed by the electric iron during the 24-hour period.

Therefore, the electric iron will consume 12 kilowatt-hours (kWh) of electricity when used for 24 hours continuously with a power rating of 500 watts.

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up down all around

yuh i said

up down all around

The final velocity of disk A in the x-direction is 3.75 m/s

The final velocity of disk A in the x-direction can be calculated by using the conservation of momentum and the coefficient of restitution. The conservation of momentum states that the total momentum before and after a collision is the same, whereas the coefficient of restitution is a measure of the relative velocity of two objects after a collision. We are given the following information: Initial velocities: Disk A: vax = 0Disk B: vbx = 10 m/s

Initial masses: Disk A: ma = 2 kg

Disk B: mb = 1 kg

Coefficient of restitution: e = 0.5

The total momentum before the collision is given by:Pinitial = ma*vax + mb*vbx = 2 kg * 0 m/s + 1 kg * 10 m/s = 10 kg m/s

After the collision, the disks move in opposite directions. Let vaf be the final velocity of disk A in the x-direction and vbf be the final velocity of disk B in the x-direction. Then, using the conservation of momentum: ma*vaf + mb*vbf = 10 kg m/s

However, we also know that the coefficient of restitution relates the final velocities to the initial velocities: vbf - vaf = -e*(vbx - vax)

Substituting the given values, we get: vbf - vaf = -0.5*(10 m/s - 0 m/s) = -5 m/s

Rearranging, we get:vaf = vbf + 5 m/s

Substituting this expression into the momentum equation:2 kg*vaf + 1 kg*(vbf + 5 m/s) = 10 kg m/s

Simplifying, we get:2vaf + vbf = 5

Since we are only interested in vaf, we can eliminate vbf by solving for it:vbf = 5 - 2vaf

Substituting this into the restitution equation: vaf - (5 - 2vaf) = -5/2

Solving for vaf, we get: vaf = 15/4 m/s

Therefore, the final velocity of disk A in the x-direction is 3.75 m/s (to three significant figures).

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To determine the maximum speed at which the bowling ball can move in a circle without breaking the string, we need to consider the tension in the string.

The breaking tension of the string is given as 120 N, and the mass of the bowling ball is 7.0 kg. By applying the centripetal force equation, which relates tension, mass, and centripetal acceleration, we can solve for the maximum speed. The answer should be provided in meters per second (m/s).

The centripetal force required to keep an object moving in a circle is provided by the tension in the string. The centripetal force can be calculated using the formula F = (mv²) / r, where F is the centripetal force, m is the mass of the object, v is the velocity, and r is the radius of the circle.

In this case, the breaking tension of the string is given as 120 N, and the mass of the bowling ball is 7.0 kg. The radius of the circle is equal to the length of the string, which is 1.4 m.

Rearranging the formula, we can solve for the maximum velocity (v) by substituting the given values for mass, tension, and radius. The maximum speed represents the fastest speed at which the bowling ball can move in a circle without breaking the string.

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Gamma rays have the smallest wavelength among the given options. So the correct option is C) Gamma rays.

Electromagnetic radiation is characterized by varying wavelengths. The electromagnetic spectrum spans a range of radiations, from longer wavelengths like radio waves to shorter wavelengths like gamma rays. Among the options provided, gamma rays have the smallest wavelength.

Gamma rays possess the smallest wavelength among the given electromagnetic radiations. Gamma rays have extremely short wavelengths, which are even shorter than X-rays and ultraviolet waves. They are highly energetic and are produced through various processes, such as radioactive decay or nuclear reactions. Gamma rays are used in various fields, including medicine (e.g., radiation therapy) and industry (e.g., sterilization), due to their ability to penetrate materials and interact with matter at the atomic level.

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The acceleration of the roller coaster car is equal to 42.9 m/s².

The equations of motion of a moving object are the equation that described the relationship between acceleration, velocity, time, and displacement of an object.

The expression of the equations of motions can be written as shown below:

\(v= u +at\\S = ut +\frac{1}{2}at^2\\ v^2-u^2 =2aS\)

Given, the velocity at the top of the hill, u = 0

The distance covered by the roller coaster, S = 71 m

The time taken for the drop, t = 1.82 sec

The equation of motion: S = ut + (1/2) at²

71 = (0) (1.82) + (1/2)×a ×(1.82)²

a = 42.9 m/s²

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Answer:

7 hours.

Explanation:

This is because you are traveling 5 kilometers per hour so 5 multiplied by 7= 35.

let the bowling ball initially is moving along the x-axis,

The whole process can be represented as,

Before the collision the net kinetic energy of the balls is,

where the values of the variables are given as,

As the value of cos(90) is zero.

Substituting the known values,

The value of the net kinetic energy with the velocity along the y-axis before the collision is,

The velocity of the second ball is at rest in the initial state, thus its value is taken as zero.

After the collision of the balls, the net kinetic energy is,

Negative sign here indicating the direction of the final balls motion will be opposite to the each other.

The values of the variables are given as,

Substituting the known values,

The value final kinetic enegry of the balls with velocity along the y-axis is,

Here 360 degree is used because the pin ball direction is downward of the positive x-axis.

Then by the law of conservation of energy along the y-axis,

Thus, the y component of the final velocity of the bowling ball of mass m1 is 5 meter per second.

The planet that weighs over twice as much as all the other known planets combined is Jupiter.

With a mass of 1.898 x 10^27 kilograms, Jupiter is by far the largest planet in our solar system. In fact, its mass is more than twice that of all the other planets in the solar system combined. This is due to Jupiter's large size and composition, which is primarily made up of hydrogen and helium gas. Jupiter's massive gravitational pull also plays a significant role in its overall mass. Its enormous size and weight have helped shape the formation and evolution of the entire solar system.

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Answer:

speed = 40 m/s

Explanation:

speed = frequency x wavelength

speed = 10 Hz x 4 m

speed = 40 m/s

Answer:

7500 Newtons

Explanation:

Mass of the sportscar= 1500 kg

Acceleration of the sportscar= 5m/s^2

Hence, let the Force acting on it be F

\(We\ know\ that,\\Force=Mass*Acceleration\\F=ma\\\\Here,\\F=1500*5\\=7500 kg m/s^2\ or\ 7500\ Newtons\)

Values such as Cohen's d or r2 are used to measure effect size.

Effect size measures the magnitude of the relationship or difference between variables in a statistical analysis. It provides a standardized way to quantify the strength or importance of an observed effect. Cohen's d is commonly used when comparing means between two groups, while r2 is used in the context of regression analysis to estimate the proportion of variance in the dependent variable accounted for by the independent variable(s).

Cohen's d expresses the difference between means in terms of standard deviations. A larger Cohen's d indicates a greater effect size, implying a more substantial difference between the groups being compared. On the other hand, r2 represents the proportion of variance in the dependent variable that can be explained by the independent variable(s). A higher r2 value signifies a stronger relationship or predictive power.

These effect size measures are valuable because they provide a standardized metric that allows researchers to compare the magnitude of effects across different studies or contexts. By considering effect size along with statistical significance, researchers can gain a more comprehensive understanding of the practical significance and relevance of their findings.

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A force known as friction prevents movement between two surfaces that are in touch. A static frictional force acts on an object when it is at rest on a surface and stops it from moving. An external force that is stronger than the static frictional force.

However, the frictional force switches from static to kinetic as soon as the item begins to move. Although it can do so when moving quickly or under a lot of stress, the coefficient of kinetic friction is typically lower than the coefficient of static friction. This implies that the amount of force needed to overcome friction may rise when the object moves faster or is subjected to more force.

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Answer:

Explanation:

initial velocity u = 54 km/h = 15 m/s

final velocity v = 18 km/h = 5 m/s

distance s = 10 m

1. v^2 = u^2 + 2as

5^2 = 15^2 + 2a × 10

25 = 225 + 20a

25 - 225 = 20a

20 a = -200

a = -200/2

a = -100m/s^2

∴Deacceleration = -100m/s^2

2. v = u + at

5 = 15 -100t

5-15 = -100t

-10 = -100t

t = 100 / 10

∴t = 10 sec

Total distance covered by the car 10 m

To me, the hardest part of this whole thing is keeping the units straight.  We're starting out with information given to us in kilometers, hours, and meters, and we have to come up with answers in m/s² , seconds, and meters.

When I worked this problem, I jumped right in without thinking, and I immediately got bogged down when I had to go off to the side and convert some units.

Now I know better.  THIS time, before we get all tangled up trying to solve anything, let's get clever and change everything to m/s right now !

(54 km/hour) · (1,000m/km) · (1 hour/3600 sec)  =  15 meters/second

(18 km/hour) · (1,000 m/km) · (1 hour/3600 sec) = 5 meters/second

NOW I'll betcha it's gonna be about 70% faster and easier !

i). Acceleration = (change in speed / time for the change)

We know the distance, but not the time.  I know there's a formula for it, but I've learned so many formulas during my lifetime that I can't remember ALL of them.  So I just memorize some of them, and I work things out from the formulas that I know.  Here's how I do time:)

Average speed during the given slow-down = (1/2)·(15+5) = 10 m/s

Distance covered during the given slow-down = 10 m.

Time = (distance) / (average speed) = (10m) / (10 m/s) = 1 second

Acceleration = (change in speed) / (time for the change)

Acceleration = (5 m/s - 15 m/s) / (1 second)

Acceleration = (-10 m/s) / (1 second)

Acceleration = -10 m/s²   (or 'Deceleration' = 10 m/s² )

_____________________________________________

For parts ii). and iii)., there's a big shift in the question.

It only gave you the slow-down from 54 to 18 km/hr for the purpose of calculating the deceleration.  NOW, for the rest of the answers, it's talking about a complete stop ... 0 m/s .

____________________________________________

ii). Time required to stop = (initial speed) / (deceleration)

Time to stop from 54 km/hr = (15 m/s) / (10 m/s²)

Time to stop = 1.5 seconds

iii).  Distance covered = (average speed) · (time to stop)

Distance covered = (7.5 m/s) · (1.5 sec)

Distance covered = 11.25 meters

OR ... use the official formula:

Distance = (1/2) · (acceleration) · (time² )

Distance = (1/2) · (10 m/s²) · (1.5 sec)²

Distance = 11.25 meters           yay !

Answer:

0.015A

Explanation:

I=V/R

=1.5/100

0.015A

Just apply ohm's law

Answer:

d) observers in different reference frames will measure time and distance differently

Answer:

head of water or mouth

Explanation:

Answer:

The beginning of a river is called the source.

Explanation:

I got this correct on oddyseyware

The mass of the second sphere is approximately 9.97 x 10^23 kg.

The gravitational force between two masses can be calculated using the formula:

F = G * (m1 * m2) / r^2

Where:

F = gravitational force

G = gravitational constant = 6.67 x 10^-11 N(m/kg)^2

m1 and m2 = masses of the two spheres

r = distance between the centers of the two spheres

In this problem, we know the following values:

m1 = 57 kg

r = 1.02 km = 1020 m

F = 1.79 x 10^-14 N

G = 6.67 x 10^-11 N(m/kg)^2

We can rearrange the formula to solve for m2:

m2 = (F * r^2) / (G * m1)

Plugging in the given values, we get:

m2 = (1.79 x 10^-14 N) * (1020 m)^2 / (6.67 x 10^-11 N(m/kg)^2 * 57 kg)

m2 = 9.97 x 10^23 kg

Therefore, the mass of the second sphere is approximately 9.97 x 10^23 kg.

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Answer:

It can be measured by using laboratory thermometer.

The quantity that has units of kg·m²/s is angular momentum. (D)

Angular momentum is a measure of the amount of rotation an object has around an axis. It is the product of the moment of inertia and angular velocity of the object.

The moment of inertia depends on the distribution of mass of an object and the axis of rotation, while the angular velocity describes how quickly the object is rotating around the axis. The product of these two quantities gives the angular momentum of the object.

In physics, units of measurements are used to represent different types of quantities. The units of kg·m²/s represent a combination of mass, distance, and time.

This combination is characteristic of angular momentum, which is a rotational analog of linear momentum and is distinct from work and power, which have different units of measurement.(D)

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Answer:

Copper is the best conductor

The hamster is running at a linear velocity of 6.5π cm/sec.

a) To find the angular velocity of the wheel, we can use the formula:

angular velocity (ω) = 2π / time period

where time period is the time taken for one revolution. In this case, the hamster takes 4 seconds to complete one revolution, so the time period is 4 seconds. Substituting this value into the formula, we get:

ω = 2π / 4 = π / 2

Therefore, the angular velocity of the wheel is π / 2 radians/sec.

b) To find the linear velocity of the hamster, we need to know the distance traveled by a point on the circumference of the wheel in one revolution. This distance is equal to the circumference of the wheel, which is:

circumference = 2πr = 2π(13) = 26π cm

The hamster completes one revolution in 4 seconds, so its speed can be found using the formula:

speed = distance / time

Substituting the values we have found, we get:

speed = 26π / 4 = 6.5π


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Explanation:

Hey there!

Given that 4kg ball struck by 12 N force.

So, we need acceleration.

Force = Mass × Acceleration

And, so

Acceleration = Force / Mass.

Acceleration = 12/4

Acceleration is equal to 3m/s² in SI units.

Hope it helps :)