In the diagram, the arrow shows the movement of electric charges through a wire connected to a battery.

A battery with an arrow at its top running from left to right. A black line connects the right end of the battery to the left end by making a series of straight lines to form a rectangular box with the battery as part of the bottom side.
What causes the electric charges to flow from one end of the battery to the other?

a balance in electric potential
a balance in resistance
a difference in electric potential
a difference in resistance

Answer:

The big rip theory

Explanation:

      I believe what you are referring to is the big rip theory, in which the universe expands faster than the speed of light Kurzgesagt refers to it as a "horizon" but in reality it's a little more complicated than that. Eventually the expansion of the universe will accelerate far beyond the speed of light creating space between molecules until eventually all matter is fleeting and the entire universe is an endlessly vast cosmic void with not but the occasion molecule left from a time when things weren't so lonely.

The long-range forces acting on the crate while being pulled up a rough, inclined wood board are: normal force, weight, tension, and static friction.

1. Normal force: This force acts perpendicular to the inclined board and opposes the weight component along the plane.
2. Weight: The gravitational force acting on the crate, which points vertically downward.
3. Tension: The force exerted by the tow rope, which pulls the crate up the inclined plane.
4. Static friction: This force acts along the inclined plane, opposing the crate's motion, and helps prevent it from sliding back down.

In summary, when a crate is pulled up a rough, inclined wood board, the long-range forces acting on it are normal force, weight, tension, and static friction. These forces help maintain the crate's stability and enable it to move up the incline.

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The average force on the puck by the stick is 448 N

To find the average force on the hockey puck, we can use the impulse-momentum theorem:

Impulse = Change in momentum

The impulse on the puck can be calculated as:

Impulse = mass x change in velocity
Impulse = 0.16 kg x (9 m/s - (-5 m/s))
Impulse = 0.16 kg x 14 m/s
Impulse = 2.24 N*s

The change in velocity is negative because the puck is moving in the opposite direction after the impact.

The impulse on the puck is equal to the average force multiplied by the time of contact:

Impulse = average force x time
2.24 N*s = average force x 0.005 s
average force = 2.24 N*s / 0.005 s
average force = 448 N

Therefore, the average force is 448 N.

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Speed = Wavelength * Frequency

We will have the following:

So, the nergy is 2.3 J.

This question can be solved using the equations of motion. There are two scenarios where the equations of motion can be used. The first scenario is the free-fall motion of the piece of bread. The second scenario is the uniformly accelerated motion of the bird.

The acceleration of the bird is  "a = 26.13 m/s²".

First, we will calculate the time taken by the bread to fall 3 m. Using the second equation of motion for this free-fall motion:

\(h = v_it + \frac{1}{2}gt^2\)

where,

h = height fall = 3 m

vi = initial velocity = 0 m/s

g = acceleration due to gravity = 9.8 m/s²

t = time taken = ?

Therefore,

\(3\ m = (0\ m/s)t+\frac{1}{2}(9.8\ m/s^2)t^2\\t = \sqrt{\frac{(3\ m)(2)}{9.8\ m/s^2}}\\\\t = 0.78\ s\)

The bird took the same time to catch the bread. Now applying the second equation of motion to the bird's motion:

\(s = v_it + \frac{1}{2}at^2\)

where,

s = distance covered by the bird = 5 m + 3 m = 8 m

vi = initial velocity of the bird = 0 m/s

a = acceleration of the bird = ?

t = time taken = 0.78 s

Therefore, using these values we get:

\(8\ m = (0\ m/s)(0.78\ s)+\frac{1}{2}a(0.78\ s)^2\\\\a = \frac{16\ m}{(0.78\ s)^2}\)

a = 26.13 m/s²

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Mountains, tops of buildings, and high-flying aircraft are all part of Earth's atmosphere, no matter how high they are. On the other hand, space doesn't belong to our atmosphere, it is outside of it. Having this in mind, the best location to place a telescope used to observe x-rays from stars is in space.

A telescope is an optical instrument that uses lenses, curved mirrors, or a combination of both to observe distant objects, or a variety of devices that emit, absorb, or reflect electromagnetic radiation to observe distant objects.

You can get started for less than $200. Once your budget exceeds $400, you will be able to purchase very capable telescopes. When you spend $600 or more, the scopes become more powerful and feature-rich.

The telescope made its debut in the Netherlands. The national government in The Hague discussed a patent application for a device that aided in "seeing faraway things as if they were nearby" in October 1608, according to the national government. It was made up of a convex and concave lens housed in a tube. Objects were magnified three or four times by the combination.

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Answer:

The static "frictional force" and the "kinetic friction" will act on the box.

When  A force is applied to a box to move it to the right across the kitchen floor, static friction force comes into play before start moving. When the box starts moving, dynamic friction force comes into play.

The resistance provided by surfaces in touch as they move past one another is known as friction.

To walk without slipping, traction is provided by friction. In most situations, friction is advantageous. They do, however, give a strong amount of opposition to the move.

When  A force is applied to a box to move it to the right across the kitchen floor, static friction force comes into play until it starts moving. When the box starts moving, dynamic friction force comes into play.

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The minimum speed that a 200 g puck needs to make it to the top of a frictionless ramp that is 3.2 m long and inclined at 20∘ is 4.64 m/s.

To find the minimum speed a 200 g puck needs to make it to the top of a frictionless ramp that is 3.2 m long and inclined at 20°, follow these steps:

Convert the mass of the puck to kilograms, 200 g = 0.2 kg

Calculate the gravitational potential energy (PE) at the top of the ramp;

PE = mgh, where m is mass, g is the gravitational constant (9.81 m/s²), and h is the height of the ramp.

To find the height (h), use the sine function;

h = sin(θ) × length of the ramp, where θ is the angle of inclination. So, h = sin(20°) × 3.2 m ≈ 1.099 m.

Now, calculate the gravitational potential energy;

PE = 0.2 kg × 9.81 m/s² × 1.099 m ≈ 2.153 J (joules).

Since the ramp is frictionless, the initial kinetic energy (KE) must equal the gravitational potential energy at the top of the ramp;

KE = 0.5mv², where m is mass and v is velocity.

Solve for v;

2.153 J = 0.5 × 0.2 kg × v²

Rearrange the equation and solve for v;

v² = (2.153 J) / (0.1 kg) ≈ 21.53

Then take the square root: v ≈ √21.53 ≈ 4.64 m/s.

So, the minimum speed the puck needs to make it to the top of the frictionless ramp is approximately 4.64 m/s.

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If an object is moving with a constant velocity and the force of 20 newton is applied on the object then the object will first slow down then comes to rest for a moment and finally it will accelerate into the opposite direction of its motion.

According to the first law of motion proposed by Newton,

If an object is in a state of rest or in a state of motion it will continue to stay in it state until and unless and external force comes into play and changes the state of the motion.

If an object is moving with a constant velocity it means that there is no net external force working on the object.

If the external force of 20 Newton start acting on the object in the opposite direction. This force will first slow down the speed of the object, and after moment really coming into the state of rest the object will start to accelerate in the opposite direction because of the action of the external force of 20N.

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1. The part that shows the body is accelerating is the first 2 hours (ABE). The acceleration is 20 Km/h²

2. The part that shows the body is coming to rest the last 2 hours (CDF)

3. The distance travelled in the first 2 hours is 40 Km

Acceleration is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

Where

From the diagram (ABE), we can see that the body starts from rest and attain a final velocity (40 Km/h) within the first 2 hours. This clearly indicates that the body is accelerating.

The acceleration can be obtained as followed:

a = (v – u) / t

a = (40 – 0) / 2

a = 20 Km/h²

From the diagram (CDF), we can see that the object velocity changes from 40 to 0 within the last 2 hours. This clearly indicates that the object caming to rest.

v² = u² + 2as

v² = 2as

s = v² / 2a

s = 40² / (2 × 20)

s = 40 Km

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C. shorter period of oscillation. The object hanging from the spring with the greater spring constant will have a shorter period of oscillation.

The period of oscillation for a mass-spring system is given by T = 2π√(m/k), where m is the mass of the object and k is the spring constant. Therefore, for two objects of equal mass hanging from independent springs of unequal spring constant, the object hanging from the spring with the greater spring constant will have a shorter period of oscillation. This is because the greater the spring constant, the greater the force exerted on the mass for a given displacement, leading to a higher acceleration and faster motion.
However, the amplitude of oscillation is not directly affected by the spring constant. The amplitude of oscillation is determined by the initial conditions of the system, such as the initial displacement and velocity. Therefore, the two objects may have different amplitudes of oscillation even if they have the same mass and are hanging from springs with different spring constants.
In summary, the correct answer is c. The object hanging from the spring with the greater spring constant will have a shorter period of oscillation.

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The jet is approximately \(5.41\times10^4\) meters or 54.1 km above the ground.

To find the height of the fighter jet, we can use the principle of conservation of energy.

The total energy of the jet is the sum of its kinetic energy (KE) and potential energy (PE).

Given the mass (m = 9600 kg), velocity (v = 72 m/s), and total energy \((E = 2.60\times10^8 J)\), we can find the height (h) using the equation E = KE + PE.

Rearranging the equation, we get PE = E - KE.

Substituting the values, we get \(PE = 2.60\times10^8 J - (1/2)(9600 kg)(72 m/s)^2.\)

Solving for PE and then converting it to height using the formula PE = mgh, we find that the jet is approximately \(5.41\times10^4\)meters or 54.1 km above the ground.

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Answer:

Electromagnetic waves strike a semiconductor, removing some of

its electrons, which form a current.

Answer:Electromagnetic waves strike a semiconductor, removing some of its electrons, which form a current.

Explanation:

Explanation:

acceleration is the Changing of throut per unit time ....

and in uniform motion .....

in that the speed of an object is uniform means same

weight of sweets and candy is 1.6kg

It is given that a total weight of 2 kg is allowed by the postal service

The weight of cookies is given to be 400gm

we know that 1kg =1000gm

400gm= 400/1000 gm =0.4kg

Therefore weight of sweets and candy that Amy can send=

total weight- weight of cookies

=2kg - 0.4kg

=1.6kg

Therefore, weight of sweets and candy is 1.6kg

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One way that Ms. Morimoto’s perspective is the same as President Truman’s is the belief that working peace is something we all do.

This is referred to as the officer in whom the chief executive power of a nation is vested and in most climes he/she is voted in after a election and the tenure could be four years etc.

The way in which Ms. Morimoto’s perspective is the same as President Truman’s is the belief that working peace is something we all do. This helps to prevent different types of conflict and in severe cases war which is therefore why it should be embraced.

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Answer:

63.8454kgm/s

Explanation:

According to Newton's second law;

Force = mass ×acceleration

Fore = m(v-u)/t

Force = mv-mu/t

MV is the final momentum

mu is the initial momentum = 38kgm/s

Force = 88.3N

Time = 0.338s

Substitute and get mv

88.3 = mv-38/0.338

88.3×0.338 = mv-38

29.8454 = mv-38

MV = 29.8454+34

mv = 63.8454kgm/s

Hence the final momentum is 63.8454kgm/s

Answer:

67.8

Explanation:

im an acellus student, and this is the answer that i got when doing the problem.

Answer:

38 years old.

Explanation:

So, we are given the following data or parameters or information which is going to assist us in solving this particular Question;

1=> The three children are A, B and C respectively.

2=> "the present age of husband is 5 years more than the wife's age."

3=> " the wife's age is twice the present age of A"

4=> the present age of A is 12 years more than the present age of B "

5=> B's present age is one and a half times the present age of C .

6=> "if C is 12 years old at present "

7=> "husband's friend Ram who is 15 years younger than the husband"

We will start from point 5 above that is to say;

B = C × 3/2. = 12 × 3/2 = 6 × 3= 18.

Also, A = 12 + B = 12 + 12= 24.

From the point 3 Above; the wife's age= 2 × A= 2 × 24 = 48 years of age.

From the point 2, we have that the husband's age = 5 + 48 = 53 years of age.

Thus, the present age of husband's friend, Ram who is 15 years younger than the husband = 53 - 15 = 38 years old

Answer:

takes 365 days and it bring us seasons such as, spring,winter and fall.

The true azimuth of the AB alignment is 91º 52' (east of north), the magnetic azimuth is 100º 22' (east of north), and the grid azimuth is 108º 52' (east of north).

To find the true azimuth, magnetic azimuth, and grid azimuth of the AB alignment, we need to consider the magnetic declination. The magnetic declination indicates the angle between true north and magnetic north at a specific location. In this case, the magnetic declination is 8º 30' E, which means that the magnetic north is 8º 30' east of the true north.

To calculate the true azimuth, we subtract the magnetic declination from the grid azimuth. The grid azimuth is given as 100º 22', so subtracting the magnetic declination of 8º 30' E gives us a true azimuth of 91º 52' (east of north).

The magnetic azimuth remains the same as the grid azimuth, which is 100º 22' (east of north).

The grid azimuth is calculated by adding the magnetic declination to the true azimuth. Since the magnetic declination is east, we add it to the true azimuth. Adding 8º 30' E to the true azimuth of 91º 52' gives us a grid azimuth of 108º 52' (east of north).

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Answer:

Explanation:

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They cannot tell the difference between people and other objects.

They will wait for crossing pedestrians even if signaled to keep driving. Explanation:

Just did it

Contact improvisation stems from the idea that each body is unique.

Body contact improvisation is a form of dance which incorporates elements from sporting movement and gymnastics, martial arts, and modern theatre practices.

Contact Improvisation liberate the dancer from the concern of the outward appearance of movement. Instead of giving importance to it’s outside visual aspect, this practice focuses in sensing a partner while having a body dialogue with her/him.

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The intensity level of a sound with an intensity of 5.0 × 10-10 W/m2 is 27 dB.

The intensity level of a sound can be calculated using the following formula:
Intensity level (dB) = 10 log (I/I0), where I is the intensity of the sound and I0 is the reference intensity, which is typically 10-12 W/m2.
Using this formula, we can calculate the intensity level of a sound with an intensity of 5.0 × 10-10 W/m2 as follows:
Intensity level (dB) = 10 log (5.0 × 10-10 / 10-12)
Intensity level (dB) = 10 log (5.0 × 102)
Intensity level (dB) = 10 × 2.7
Intensity level (dB) = 27 dB
Therefore, the intensity level of a sound with an intensity of 5.0 × 10-10 W/m2 is 27 dB. It's important to note that the intensity level is a measure of how loud a sound is perceived by the human ear, and is typically measured on a logarithmic scale. So, a sound with an intensity level of 27 dB is considered relatively quiet, while a sound with an intensity level of 120 dB (such as a jet engine or a rock concert) is considered very loud and can cause hearing damage if exposure is prolonged.

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Answer:

Most energy crises have been caused by localized shortages, wars and market manipulation. Some have argued that government actions like tax hikes, nationalisation of energy companies, and regulation of the energy sector, shift supply and demand of energy away from its economic equilibrium.

The system is open, because there is a net force exerted on the block.

An individual strolling, a taking off baseball, a piece tumbling from a table and a charged molecule in an electric field are instances of dynamic energy at work. An item that isn't moving has zero motor energy.

The energy an item has as a result of motion is known as kinetic energy. A force must be applied to an item in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the item, which then moves at a new, constant speed.

According to question:

On graphing free body diagram of the problem

There is a force = mgsin(37°)

So, the it is a open system.

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Answer:

A balanced chemical equation represents law of conservation of mass.

I hope it'll help u

Answer:

law of conservation of mass

Explanation

Hope it helps!