An example of a Natural electric field is

Answer:

312hz

Explanation:

thanks me later

when we burn a paper it undergoes the combustion reaction.

Answer:

Refer to the attached image.

Answer:

0.1 m/s

Explanation:

Please see attached photo for explanation.

Mass of 1st cart (m₁) = 500 g

Initial velocity of 1st cart (u₁) = 0.25 m/s

Mass of 2nd cart (m₂) = 750 g

Initial velocity of 2nd cart (u₂) = 0 m/s

Velocity (v) after collision =.?

m₁u₁ + m₂u₂ = v(m₁ + m₂)

(500 × 0.25) + (750 × 0) = v(500 + 750)

125 + 0 = v(1250)

125 = 1250v

Divide both side by 1250

v = 125 / 1250

v = 0.1 m/s

Thus, the two cart will move with a velocity of 0.1 m/s after collision.

The velocity of the cart will be 0.1 m/sec.Velocity is the rate of change of displacement. Its unit is m/sec.

According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.

The given data in the problem is;

(m₁)  is the mass of  cart 1 = 500 g

(u₁)  is the initial velocity of  cart  1= 0.25 m/s

(m₂) is the mass of 2nd cart = 750 g

(u₂) is the initial velocity of 2nd cart  = 0 m/s

(v)  is the velocity after collision =.?

According to the law of conservation of momentum;

Momentum before collision =Momentum after collision

\(\rm m_1u_1 + m_2u_2 = v(m_1 + m_2)\\\\(500 \times 0.25) + (750 \times 0) = v \times (500 + 750) \\\\ 125 + 0 = v \times (1250) \times 125 \\\\ \rm v= \frac{125}{1250} \\\\ \rm v== 0.1 m/sec\)

Hence the velocity of the cart will be 0.1 m/sec.

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Mark's work decreases when he climbs the same flight of stairs again in the same amount of time without the cello.

The correct answer is option D.

The amount of work Mark does depends on the weight of the cello, as well as the distance he climbs and the time it takes. Work is calculated using the formula :

Work = Force × Distance.
In the given scenario, Mark is carrying a full-sized cello while climbing the stairs. The weight of the cello adds to the force he exerts. So, the total force Mark exerts is the weight of the cello plus his own weight (375 N).

When Mark climbs the stairs with the cello, he is doing work against the force of gravity.

The work done is equal to the force exerted multiplied by the distance climbed (375 N + weight of cello) × 4 m.

Now, if Mark were to climb the same flight of stairs again in the same amount of time (3 seconds), but this time without the cello, the amount of work he does would decrease. This is because without the cello, the force exerted would only be Mark's weight (375 N), which is less than the total force exerted with the cello.

Therefore, mark's work decreases.

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Answer:

  v ’= v + v₀

a system can be another vehicle moving in the opposite direction.

Explanation:

In an inertial reference frame the speed of the vehicle is given by the Galileo transformational

          v ’= v - v₀

where v 'is the speed with respect to the mobile system, which moves with constant speed, v is the speed with respect to the fixed system and vo is the speed of the mobile system.

The vehicle's speedometer measures the harvest of a fixed system on earth, in this system v decreases, for a system where v 'increases it has to be a system in which the mobile system moves in the negative direction of the x axis, whereby the transformation ratio is

        v ’= v + v₀

Such a system can be another vehicle moving in the opposite direction.

In order to answer the question of where the arrows of the magnetic domains point, one must consider the properties of the magnets' poles: A) The arrows line up and point upward.

Iron or cobalt is a common component of permanent magnets. An alloy composed of aluminum is called alnico. Involves a systematic process minerals are capable of making powerful electromagnets. They are widely utilized in industrial and consumer electronics applications.

The word "lithos magnes" from classical Greek is where the name first appeared. According to Pliny's explanation in his "Naturalis Historia," the term is derived from the myth of the Greek shepherd Magnes on Mount Ida, whose iron staff and the nails in his shoes were drawn to the magnetite stones.

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Answer:

POINTS LEFT

Explanation:

just did it

Answer:

0.0119502868 kilocalorie

Explanation:

Answer:

increases by 50

Explanation:

Table A agrees with the information in the problem. After 25.0 seconds, the velocity of the plane is 187 m/s.

Based on the given problem, we need to determine the velocity of a plane after 25.0 seconds. The plane is initially flying east at a velocity of 115 m/s, and it experiences an acceleration of 2.88 m/s² in the northwest direction.

Let's analyze each option and calculate the final velocity (Vf) of the plane after 25.0 seconds:

Option A:

Vi = 115 m/s

a = 2.88 m/s²

t = 25.0 s

Using the equation Vf = Vi + at, we can calculate:

Vf = 115 m/s + (2.88 m/s²)(25.0 s) = 115 m/s + 72 m/s = 187 m/s

Option B:

V₁ = 2.04 m/s

a = 2.04 m/s²

t = 25.0 s

Using the equation Vf = V₁ + at, we can calculate:

Vf = 2.04 m/s + (2.04 m/s²)(25.0 s) = 2.04 m/s + 51 m/s = 53.04 m/s

Option C:

V₁ = 115 m/s

a = -2.04 m/s²

t = 25.0 s

Using the equation Vf = V₁ + at, we can calculate:

Vf = 115 m/s + (-2.04 m/s²)(25.0 s) = 115 m/s - 51 m/s = 64 m/s

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Answer: The mutual inductance of these solenoids is \(2.88 \times 10^{-7} H\).

Explanation:

Given: Length = 50.0 cm (1 cm = 0.01 m) = 0.50 m

\(N_{1}\) = 6750

\(N_{2}\) = 15

Radius = \(\frac{0.120 cm}{2} = 0.6 cm = 6 \times 10^{-4} m\)

As inner of a solenoid resembles the shape of a circle. So, its area is calculated as follows.

\(Area = \pi \times r^{2} = \pi \times (6 \times 10^{-4})^{2}\)

Formula used to calculate mutual conductance of two solenoids is as follows.

\(M = \frac{\mu_{o} \times A \times N_{1} \times N_{2}}{l}\)

where,

M = mutual conductance

A = area

\(\mu_{o}\) = relative permeability = \(4 \pi \times 10^{-7} Tm/A\)

\(N_{1}\) = no. of coils in outer solenoid

\(N_{2}\) = no. of coils in inner solenoid

l = length

Substitute the values into above formula as follows.

\(M = \frac{\mu_{o} \times A \times N_{1} \times N_{2}}{l}\\= \frac{4 \pi \times 10^{-7} Tm/A \times \pi (6 \times 10^{-4})^{2} \times 6750 \times 15}{0.5 m}\\= 2.88 \times 10^{-7} H\)

Thus, we can conclude that the mutual inductance of these solenoids is \(2.88 \times 10^{-7} H\).

Answer:

The North American tectonic plate.

Explanation:

recall the formula for momentum: p = m * v

the subatomic particles have very small masses while high speeds, so the product results in values with negative exponents in scientific notation.

Negative exponents also result for the house fly when converting mg into kg (10^-6).

The positive exponents in scientific notation for the momentum come for the gigantic mass of the continental plate which exceeds the negative exponents contributed by the small velocity.

The change velocity over a period is known as the acceleration. In a velocity-time graph, the acceleration is given by the slope of the graph.

Thus, when the slope of the line on the velocity-time graph is zero, that is, when the line is horizontal, the object is not accelerating.

The lines in the last two graphs in the question are horizontal. Therefore, those two objects are not accelerating.

And the objects in the first two graphs are accelerating as they are not horizontal lines and their slope is non-zero.

The metaphor "sawing himself in two" highlights the basketball player's agility as his legs and upper body move in opposing directions before coming together at the rim to hit a shot.

Essentially, employing figurative language involves distorting the meaning of words to convey a point, sound clever, or create a joke. Figurative language is a common technique used in narrative writing when the author wants to make the reader feel strongly about something.

Literature forms like poetry, drama, prose, and even speeches use figurative language. Figurative language is a literary element that is employed throughout

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It will take the Hubble Telescope 94,247 seconds or 26.18 hours to complete one full rotation around the Earth.

The Hubble Telescope is in a circular orbit around the Earth at a constant speed of 20 m/s. The distance between the telescope and the center of the Earth is:

300 km + 100 m = 300,100 m.

Orbital period T of the Hubble Telescope = T = 2πr / v

where

In this case, r = 300,100 m and v = 20 m/s, so:

T = 2π(300,100 m) / (20 m/s) = 94247 seconds

Thus, it will take the Hubble Telescope approximately 94,247 seconds, or about 26.18 hours, to complete one full rotation around the Earth.

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If the net work done on a particle is zero, the particle will move with a constant speed.

The principle of work and kinetic energy, often known as the work-energy theorem, states that the change in kinetic energy of a particle is equal to the sum of the entire work done by all of the forces acting on it.

So,

W = ΔKE

Thus, we can say that the kinetic energy of the particle will not change if the net work done on it is equal to zero.

As a result, the state of motion of the particle will not change, and thus the speed of the particle will also remain constant.

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According to the question, the different devices as to broom is a first-class lever.

Broom is an implement used for sweeping. It consists of a set of bristles attached to a long handle. Brooms have been used for centuries to keep floors and other surfaces clean. The bristles are usually made from plant fibers or plastic. They are also sometimes made from metal or wire. Brooms can be used to sweep up dirt and dust, collect small particles, and even push larger items. They are perfect for quick cleanups and can be used on almost any type of floor or surface. They are also great for removing cobwebs and other debris from corners and other hard-to-reach places. Brooms are a convenient and easy-to-use tool that can help keep your home or workspace clean.

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Answer:

upward

Explanation:

In the electromagnetic system of force if the direction of motion of proton does not changes it means that the electric and magnetic forces are such a ways that they are cancelling each other's effect.

Since, electric field lines will exert a force on the proton to the west, hence, the magnetic force must force it to the east. It is well known that magnetic force acts perpendicular to the direction of magnetic field.  magnetic field should point upward direction.

tTe spring constant of the spring, attached with when a mass of 0.20 kg  is 0.059 N/m.

The spring constant, k, is a measure of the stiffness of the spring.

To calculate the spring constant of the spring, we use the formula below.

Formula:

Where:

From the question,

Given:

Susbtitute these values into equation 1

Hence, the spring constant of the spring is 0.059 N/m.

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Explanation:

Acceleration is a vector quantity which is defined as the rate at which an object changes its velocity

Answer:

25N

it will float since the water displaced is less than the weight. buoyancy = 25n down

Explanation:

40 newtons - 25 newtons = 25 newtons

The buoyant force on the ball is 25 Newton and the ball will float.

From the information given, we're informed that a hollow ball weighs 40 newtons and a water tank displaces 15 newtons of water.

Therefore, the buoyant force on the ball will be:

= 40N - 15N = 25N

Since we got a positive value, it means that the ball will float on water.

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Answer:

A. length, diameter, material, temperature

One full weather station reports  wave passing a spot every second is equivalent to a frequency of 1 Hz. The frequency is 48=12=0.5 Hz if 4 waves pass a spot in 8 seconds.

The number of cycles that make up a time unit is the frequency. The frequency of a wave with a 30-second period is therefore 1 30 = 0.033 cycles per second, or 0.033 Hertz (Hz).

A wave's speed and wavelength vary as it crosses a border and enters a new medium, but its frequency doesn't.

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Answer:

ke=648J

Explanation:

ke=1/2mv²

m=9kg

v=12m/s

1/2(9)(12)²

=648J

Each of the five friends needs to pay £12 to cover the cost of their own meals and contribute towards the birthday person's meal. Using mean allows us to distribute the cost equally among the friends, ensuring a fair division of expenses for the meal.

To determine how much each of the five friends needs to pay, we can use the concept of averages (mean) and divide the total cost by the number of people paying.

In this scenario, the total cost of the meal for 6 people is £12 per person. Since the other 5 friends have decided to pay for the birthday person's meal, they will collectively cover the cost of their own meals plus the birthday person's meal.

To calculate the total cost covered by the five friends, we can subtract the cost of one person's meal (since the birthday person's meal is being paid by the group) from the total cost. The cost of one person's meal is £12.

Total cost covered by the five friends = Total cost - Cost of one person's meal

= (£12 x 6) - £12

= £72 - £12

= £60

Now, to find out how much each of the five friends needs to pay, we divide the total cost covered by the five friends (£60) by the number of friends (5).

Amount each friend needs to pay = Total cost covered by the five friends / Number of friends

= £60 / 5

= £12

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Answer:

Mass is constant everywhere,

But weight is different,

If earth g = 10 then moon's is 1.6666667

Now billie's weight in moon is 41.6667

the initial speed of the bullet as it was fired horizontally into the wooden block resting on a horizontal surface is 265m/s.

A conservation law states that the total linear momentum of a closed system remains constant through time, regardless of other possible changes within the system.

Given, A 5.00g bullet is fired horizontally into a 1.20kg wooden block resting on a horizontal surface.

In our case,

Mass of bullet = 5 gram = 0.005 kg

Mass of wooden block = 1.2 kg

the initial velocity of block = 0

Kinetic friction = 0.20

First, we get the velocity of the Wood.

From Conservation of Energy:

1/2m v² = μ mgs

v = √(2 μgs)

Where v is the velocity of the block,

μ is the coefficient of kinetic friction,

s is the displacement of the bullet

g is the acceleration due to gravity (9.81)

v = √(2 *0.2*9.81 * 0.31)

v = 1.1 m/s

so, the velocity of the wooden block after the collision will be 1.10 m/s

Now, we determine the velocity of the bullet. Using Conservation of Momentum.

m₁v₁ + m₂v₂ = MV

0.005 *v + 0 = (1.20 + 0.005) * 1.1

v = 1.325/0.005

v = 265 m/s

Therefore, the initial speed of the bullet as it was fired horizontally into the wooden block resting on a horizontal surface is 265m/s.

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The speed of the car just after the gravel is loaded is 2.8m/s.

An isolated system experiences a change in momentum to zero when the starting and final velocities are equal. The reactions between the particles are separated from the surroundings. Momentum is conserved, so we use the rule of conservation of momentum, which is expressed by the equation

   \(P_{f}\)=\(P_{i}\)(1)

Railway is frictionless due to isolated mechanism. The thing travels at a momentum p-based speed while having mass. m

An object's bulk and velocity v are combined to form a vector.Equation of the form gives the velocity.

\(p=mv\)

Using expression p into equation (1)

\(m_{f}v_{f}\)=\(m_{i}v_{i}\)(2)

The final mass of a car is its original mass plus the mass of the gravel added. A car has an initial mass of.10000Kg  preliminary pace is

\(m_{f}\)=10000Kg+4000Kg=14000Kg

initial speed 4m/s

the final speed should be found after solving the equation(2) for \(v_{f}\)

\(v_{f}\)=\(\frac{m_{i}v_{i} }{m_f} }\)=\(\frac{10000Kg(4m/s)}{1400Kg}\)=2.8m/s

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A. The average speed you can use to pull the safe is 1.02 m/s

B. The time needed to pull the safe up is 17.65 s

First, we shall obtain the force. This is shown below:

F = mg

F = 60 × 9.8

F = 588 N

Finally, we shall obtain the average speed. Details below:

Power = force × average speed

600 = 588 × average speed

Divide both sides by 588

Average speed = 600 / 588

Average speed = 1.02 m/s

The time needed to pull the safe up can be obtained as follow:

Time = Total distance / average speed

Time = 18 / 1.02

Time = 17.65 s

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Complete question:

You know you can provide 600 W

of power to move large objects. You need to move a 60-kg

safe up to a storage loft, 18 m

above the floor.

Part A

With what average speed can you pull the safe straight up?

Part B

What is the time needed to pull the safe up?