Why is overriding your headlights at night dangerous?

A transformer is used to step up or down the voltage in power lines. It uses two coils that are near but not connect to each other. The ratio of turns in the two coils determines the voltage because magnetic field produced in the primary coil interacts with the secondary coil and according to faraday's law magnetic field in the primary produces voltage in the secondary.  

Transformer is used to step up or step down the voltage by the relation

N₁/N₂ = V₁/V₂

when there is more number of turn in secondary than primary the voltage gets step and and vice verse.

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The force that acts in a direction opposite to the motion of the moving object is called drag or air resistance.

Drag or air resistance is a force that acts on a moving object in a fluid medium, such as air or water, opposing its motion. It acts in a direction opposite to the motion of the object and is caused by the friction and pressure differences between the fluid and the object's surface. Drag force increases with the velocity of the object and its surface area, and it's usually modeled as a quadratic function of the velocity. For example, when a car is moving, the air resistance acts in the opposite direction of the car's motion, slowing it down. The drag force is not the only force that acts on the object, but it's one of the most significant forces acting on it, especially for objects moving at high speeds.

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Answer: Energy is added, by the man, to the golf club from point X to point Y.

Explanation: i think :)

Doubling the kinetic energy of a car does not change its momentum. Momentum is determined solely by the mass and velocity of the object, independent of its kinetic energy.

Kinetic energy and momentum are two different physical quantities that describe the motion of an object. Kinetic energy depends on the mass and velocity of an object, while momentum depends only on the mass and velocity.

When the kinetic energy of a car is doubled, it means that the car's velocity is increased while its mass remains the same. However, momentum is the product of mass and velocity, so if the mass remains constant, any change in kinetic energy does not directly affect momentum.

Mathematically, the formula for kinetic energy is KE = (1/2)mv^2, where KE represents kinetic energy, m represents mass, and v represents velocity. On the other hand, momentum is given by the formula p = mv, where p represents momentum. As we can see, kinetic energy involves velocity squared, while momentum only involves velocity.

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Answer:

7. 1ml = 20 drops

325ml = 6500

( 325 x 20 = 6500)

there are 6500 drops in a pepsi can

8. not sure sorry ; (

9. 1 mile per hour = 88 feet per minute

45 miles per hour = 3960 feet per minute

( 88 x 45 = 3960)

there are 3960 feet per minute in 45 miles per hour

Answer:

Electricity produced via friction is a development of electric charges on articles. Energizes construct when negative electrons are moved starting with one article then onto the next. The article that surrenders electrons turns out to be decidedly charged, and the item that acknowledges the electrons turns out to be contrarily charged. This can occur in a few different ways.

Explanation:

\(\mathrm {All, done!}\)

Explanation:

Let's solve the problem by using conservation of momentum:

m1 u1 + m2 u2 = m1 v1 + m2 v2

where:

m1 = 3.5 g  is the mass of the blue marble

m2= 1.2 g is the mass of the red marble

u1 = 15 cm/s  is the initial velocity of the blue marble

u2 = 3.5 cm/s is the initial velocity of the red marble

v1 = 5.5 cm/s is the final velocity of the blue marble

We can find the final velocity of the red marble by re-arranging the equation and solving for v2 :

v2 = 1/m²(m1 u1 + m2 u2 - m1 v1)=

=1/1.2(3.5×15+1.2×3.5−3.5×5.5 )=31cm/s

Answer:

jus did this, the answer is A, -0.8 m/s^2 :)

Explanation:

Answer:

Reliable, infallible, trustworthy apply to persons, objects, ideas, or information that can be depended upon with confident certainty. Reliable suggests consistent dependability of judgment, character, performance, or result: a reliable formula, judge, car, meteorologist.

Explanation:

The D. critical path is a series of events and activities with no slack time.

It is a path that defines the longest duration required to complete a project. It is significant in the project management methodology as it helps the project manager establish a timeline for the project while also identifying the activities that are most critical to the project's completion. If an activity on the critical path takes longer than anticipated, the whole project will be delayed, and if an activity is completed earlier than expected, then it might not be worth it to continue the project, and the client might not be willing to pay for it.

The critical path analysis allows managers to identify and control the critical factors that can impact a project's success, enabling them to focus on the most important areas and make informed decisions about the project. So the correct answer is D. critical path, is a series of events and activities with no slack time.

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Answer:

The velocity-time graph is illustrated and it shows the speed and direction that's traveled by the bicycle.

A velocity-time graph simply shows the speed and the direction that an object travels over a particular period of time.

It should be noted that they're also known as the speed-time graph. On the vertical axis is the velocity of the object.

Since 60 minutes = 1 hour 3 minutes will be converted to hour. This will be:

= 3/60 = 1/20 hour.

5 minutes will be changed to hour. This will be: = 5/60 = 1/12 hours.

Explanation:

Answer:

Metamorphic

Explanation:

Metamorphic rocks form when rocks are subjected to high heat and high PRESSURE.

Answer:

Explanation:

According to Newton's second law

F = ma

m is the mass = 0.12kg

a is the acceleration = v-u/t

a = 5-0/0.6

a = 5/0.6

a = 8.333m/s²

Get the force

F = 0.12 * 8.333

F = 1.0N

Hence the average resultant force acting on the ball while it is being hit is 1.0N

The work required to bring a seventh particle of charge q from very far away and place it at the center of the circle is \(W =  \frac{6k(q^2)}{r}\).

1. Since there are six particles equally spaced around the circle, the distance between the center of the circle and each particle is r.
2. The work required to bring a particle of charge q close to another particle of charge q is given by Coulomb's Law:

\(W =  \frac{k(q1 * q2)}{d}\),

where k is the electrostatic constant, q1 and q2 are the charges of the particles, and d is the distance between them.
3. In this case,

q1 = q2 = q and d = r.

So the work required to bring the seventh particle close to one of the six particles is \(W =  \frac{6k(q^2)}{r}\).
4. Since there are six particles, the total work required to bring the seventh particle to the center of the circle is the sum of the work done to bring it close to each of the six particles. Therefore, the total work is \(W =  \frac{6k(q^2)}{r}\).
The work required to bring a seventh particle of charge q from very far away and place it at the center of the circle with six equally spaced particles of charge q is \(W =  \frac{6k(q^2)}{r}\).

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Answer: When a child is riding on a sled down a steep, snow-covered hill, his elevation decreases and hence Kinetic energy increases and potential energy decreases.

i think this will help you

An object must travel at a speed of 0.14 times the speed of light for its total energy to be 1% more than its rest energy. To have its total energy 99% more than its rest energy, the object must travel at a speed of 0.8654 times the speed of light.

To determine how fast must an object travel for its total energy to be 1% more than its rest energy and 99% more than its rest energy, we use the formula for relativistic kinetic energy K = (γ - 1)mc² where γ = 1/√(1 - v²/c²). The object must travel at a speed of 0.14 times the speed of light for its total energy to be 1% more than its rest energy.

Similarly, the object must travel at a speed of 0.8654 times the speed of light for its total energy to be 99% more than its rest energy. The speed at which an object must travel to achieve relativistic speeds becomes closer and closer to the speed of light as the object's total energy approaches infinity. At the speed of light, an object's total energy would be infinite.

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The element (A) F (fluorine) doesn't have similar chemical properties to neon (Ne).

The noble gases comprise a group of the periodic table, consisting of six chemical elements: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The noble gases are the chemical elements that are the least reactive.

They are the lightest and have the smallest atomic radii of any element in their respective periods. Their non-reactivity makes them very useful in a wide range of applications. They are used in lighting, cryogenics, as pressurized gases for spacecraft propulsion, and in the semiconductor industry. The noble gases are located in the last column of the periodic table. The number of electrons in their outermost shell (the valence shell) is the same as the group number.

For example, helium and neon have two valence electrons, and argon has eight. Fluorine, represented by F on the periodic table, is a chemical element with the atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As a member of the halogen group, it is a highly reactive element. Therefore, the option (A) F (fluorine) is not a noble gas and doesn't have similar chemical properties to neon (Ne).

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Answer:

89km

Explanation:

Don't know how to explain without a pic.

When  the core of a star reaches a temperature of about 100 million degrees (k), the new event named  triple-alpha process happens where the helium will begin to fuse into carbon.

The triple-alpha mechanism, which turns three helium nuclei into one carbon atom, will start to fuse helium into carbon when the temperature in the core reaches roughly 100 million degrees. There is a lot of heat produced by this.

The triple-alpha process is unusually sensitive to temperature; when the reaction's temperature is doubled, it proceeds nearly a trillion times faster! Therefore, while the fusing helium heats the core, which cannot expand to cool down, the increasing temperature prompts the helium fusion to abruptly proceed millions of times faster, which very quickly heats the core even more, which in turn prompts the helium to fuse way, way faster.

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Answer:

using cleats other than gym shoes

Explanation:

the cleats hwve spikes and help gain speed

Answer:

13,482m deep

Explanation:

1,498×9 =13,482m deep

To calculate the minimum speed of the book bag in order to just negotiate the top of the circle, we need to consider the forces acting on the book bag at the top of the circle.

At the topmost point, the net force is given by:

Net force = T - mg

Since the book bag is just able to negotiate the top of the circle, the net force is equal to zero. Therefore:

T - mg = 0

Solving for T:

T = mg

Now, we can calculate the minimum speed required to just negotiate the top of the circle. At the topmost point, the centripetal force required to keep the book bag moving in a circular path is equal to the tension force:

T = m * v^2 / r

where v is the velocity of the book bag and r is the radius of the circle.

Setting T equal to mg:

mg = m * v^2 / r

Canceling the mass (m) on both sides:

g = v^2 / r

Solving for v:

v^2 = g * r

v = sqrt(g * r)

Substituting the values:

v = sqrt(9.8 m/s^2 * 0.5 m)

v ≈ 3.13 m/s

Therefore, the minimum speed of the book bag in order to just negotiate the top of the circle is approximately 3.13 m/s.

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Answer:

a=3.5m/s^2

Explanation:

f=ma(f=force m=mass a=acceleration)

1575=450a

a=1575/450

a=3.5m/s^2

Answer:

3.5ms^-2

Explanation:

m = 450kg, F = 1575N, a = ?

Since F = ma

Making acceleration subject of the formula

We have;

a = F/m

Substituting we have;

a = 1575/450

a = 3.5ms^-2

Answer:

16kg

Explanation:

Force = mass x acceleration

80 = m (5)

m=16kg

Answer:

If you want to hear a train approaching from far away,it is more convenient to put the ear to the track.This is because sound can travel through railway track (solid ) faster than through air.

Here's a C program that takes three integers as input and finds the maximum and minimum values among them:

An integer  is a whοle number (nοt a fractiοnal number) that can be pοsitive, negative, οr zerο. Examples οf integers are: -5, 1, 5, 8, 97, and 3,043.

c

#include <stdio.h>

int main() {

   int num1, num2, num3;

   int max, min;

   printf("Enter three integers: ");

   scanf("%d %d %d", &num1, &num2, &num3);

   // Assume num1 is the maximum and minimum initially

   max = num1;

   min = num1;

   // Check if num2 is greater than current max

   if (num2 > max) {

       max = num2;

   }

   // Check if num3 is greater than current max

   if (num3 > max) {

       max = num3;

   }

   // Check if num2 is smaller than current min

   if (num2 < min) {

       min = num2;

   }

   // Check if num3 is smaller than current min

   if (num3 < min) {

       min = num3;

   }

   printf("Maximum value: %d\n", max);

   printf("Minimum value: %d\n", min);

   return 0;

}

In this program, we declare variables num1, num2, and num3 to store the input integers. We also declare max and min to keep track of the maximum and minimum values, respectively.

The scanf function is used to take input from the user. The user is prompted to enter three integers, which are stored in num1, num2, and num3.

Next, we compare each input integer with the current maximum and minimum values. If an input is greater than the current maximum, we update the max variable. If an input is smaller than the current minimum, we update the min variable.

Finally, we display the maximum and minimum values on the screen using the printf function.

When you run the program and enter the three integers, it will output the maximum and minimum values among them.

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Answer:

The cue ball crashing into the eight balls on a pool table.

Explanation:

Elastic and inelastic collisions are two types of collisions.

For elastic collision, both the momentum and the kinetic energy before and after the collision remains conserved.

Out of the given options, the option that shows an example of an elastic collision is option A " The cue ball crashing into the eight balls on a pool table." All the eight balls after crashing moves with different velocity.

Option A, The magnitude of the net force acting on the object is more than 20 N.

We can find the magnitude of the net force following up on the item by utilizing the Pythagorean hypothesis.

The north force and then the east force are opposite to one another, so they can be treated as the different sides of a right triangle, and the net force is the hypotenuse.

Utilizing the Pythagorean hypothesis:

net force² = (toward the north force)² + (toward the east force)²

net force² = 10² + 10²

net force² = 200

Taking the square base of the two sides:

net force = √(200) = 14.14 N

Subsequently, the extent of the net force following up on the item is more prominent than 20 N (choice A).

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