If we assume a typical efficiency for the body, as quoted in the video, how much energy input would it take to climb a ladder, increasing your body’s potential energy by 5,000 j?.

Answer:

electrons can be knocked loose from one object and picked up by the other. The object that gains electrons becomes negatively charged, while the object that loses electrons becomes positively charged.

Answer:

B

Explanation:

That is solar energy and the sun will be releasing energy constantly for the rest of its life, meaning renewable

The forces of attraction between water molecules and the glass walls and within the molecules of water themselves are what enable the water to rise in a thin tube immersed in water.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Force is defined as the product of mass and acceleration. Its unit is Newton.

Surface or interfacial forces lead to capillarity. The forces of attraction between the water molecules and the glass walls and among the water molecules themselves are what causes the water in a thin tube submerged in water to rise.

Hence, the water rises up a thin capillary tube can be explained by Newton's third law.

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Answer:

490N

Explanation:

W=m×g

W=50×9.8=490N

Answer:

g=9.64m/s^2.

Explanation:

Gravitational field strength (in other words, gravitational acceleration) is given as follows:g=GMR2g=R2GM​where G=6.674×10−11m3kg⋅s2G=6.674×10−11kg⋅s2m3​ is the gravitational constant, M=5.972×1024kgM=5.972×1024kg is the mass of the Earth, and R=6.371×106m+0.06×106m=6.431×106mR=6.371×106m+0.06×106m=6.431×106m is the distance from the center of the Earth to the required point above the surface (radius plus 60 km).

G = 9.4 m/s²

Gravitational acceleration (symbolized g) is an expression used in physics to indicate the intensity of a gravitational field.

It is expressed in meters per second squared (m/s²).

At the surface of the earth, 1 g is about 9.8 m/s 2 .

According to the question,

Gravitational field strength is given as follows:

[tex]g = \dfrac{GM}{R^2}[/tex]

​Where[tex]G = 6.674\times 10^{-11}\dfrac{m^3}{kg\cdot s^2}[/tex]    is the gravitational constant,

[tex]M = 5.972\times 10^{24}kg[/tex] is the mass of the Earth,

and [tex]R = 6.371\times 10^{6}m + 0.06\times 10^{6}m = 6.431\times 10^{6}m[/tex]

Here, m is the distance from the center of the Earth to the required point above the surface (radius plus 60 km).

Thus, obtain:

[tex]g = \dfrac{6.674\times 10^{-11}\cdot 5.972\times 10^{24}}{(6.431\times 10^{6})^2} \approx 9.64m/s^2[/tex]

g ≈9.64m/s 2

Therefore ,

The gravitational field strength is g = [tex]9.64m/s^2[/tex]

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.

#a

This is because red color has higher wavelength and it can clear universe and our atmosphere better,

This has the same reason as how we can see only red color during sunset.

#b

[tex]\boxed{\sf z=\dfrac{ \lambda-\lambda_o}{\lambda_o}}[/tex]

lambda_o be x

Put values

[tex]\\ \rm\Rrightarrow 7.6=\dfrac{2\times10^{-6}-x}{x}[/tex]

[tex]\\ \rm\Rrightarrow 7.6=\dfrac{2\times 10^{-6}}{x}-1[/tex]

[tex]\\ \rm\Rrightarrow 8.6=\dfrac{2\times 10^{-6}}{x}[/tex]

[tex]\\ \rm\Rrightarrow x=0.23\times 10^{-6}m[/tex]

[tex]\\ \rm\Rrightarrow x=0.23\mu m[/tex]

[tex]\huge\color{Basic}{\boxed{\tt{answer}}}[/tex]

Answer: yes it cannot be 100% efficient

Explanation:

only an ideal machine with 0 friction can have 100 percent efficiency

Home heating systems work through negative feedback by regulating the temperature through thermostat.

In thermostat, when the temperature of the room environment increases by the negative feedback system the furnace gets turn off, allowing the room to get to its normal temperature and when the temperature lower down it turns on again and maintain the temperature in equilibrium state.

So we can conclude that home heating systems work through negative feedback by regulating the temperature through thermostat.

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The interior part of Jupiter and Saturn are different from each other due to difference of core and magnetic field.

The interiors of Jupiter and Saturn differ from one another because Jupiter has a larger metallic hydrogen core as compared to Saturn. It has stronger magnetic field as compared to Saturn.

So we can conclude that the interior part of Jupiter and Saturn are different from each other due to difference of core and magnetic field.

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Answer:

B

Explanation:

F=[tex]\frac{Gm1m2}{r^2}[/tex]

F=(6.67 x 10^-11)[tex]\frac{63.7X9,750.6}{7.5^2}[/tex]

F=7.36502254e-7

The statement that best describes Keisha errors is an object in either state of equilibrium must have no net force acting on it.

An object is said to be on a dynamic equilibrium when it moves at a constant speed, and all the forces on the object are balanced.

An object is also said to be on static equilibrium when it is unable to move because all the forces which act on it compensate for one another.

Therefore, the statement that best describes Keisha errors is an object in either state of equilibrium must have no net force acting on it.

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Hi!

Inside an electric motor, permanent magnets are set onto a ring surrounding a coil of wire. The communicater mother is what makes it spin

Communications: Laura develops programs that flag suspicious network activity.

Communication involves the transfer of information from one person (sender) to another (recipient), especially through the use of semiotics, symbols, signs and network devices.

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Answer:

The food supply chain comprises all the stages that food products go through, from production to consumption

Explanation:

Answer:

Without it, we could not survive on Earth. Earth orbits the sun due to the gravity of the sun, which maintains us at a convenient distance from it to enjoy the sun's warmth and light. It keeps the air we need to breathe and our atmosphere in place. Our planet is held together by gravity.

Answer:

During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again.

Explanation:

In nuclear fission the nucleus of an atom breaks up into two lighter nuclei. The process may take place spontaneously in some cases or may be induced by the excitation of the nucleus with a variety of particles (e.g., neutrons, protons, deuterons, or alpha particles) or with electromagnetic radiation in the form of gamma rays. In the fission process, a large quantity of energy is released, radioactive products are formed, and several neutrons are emitted. These neutrons can induce fission in a nearby nucleus of fissionable material and release more neutrons that can repeat the sequence, causing a chain reaction in which a large number of nuclei undergo fission and an enormous amount of energy is released. If controlled in a nuclear reactor, such a chain reaction can provide power for society’s benefit. If uncontrolled, as in the case of the so-called atomic bomb, it can lead to an explosion of awesome destructive force.

Answer:

In nuclear fission, atoms are split apart, which releases energy. All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation.

An omnidirectional antenna radiates radio frequency (rf) energy equally in all directions around its axis.

An omnidirectional antenna is an antenna which radiates radio frequency (rf) energy equally in all directions around its axis.

Radio frequency energy is a form of electromagnetic radiation.

An antenna receives as well as sends out radio frequency energy.

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Answer:

3586

Explanation:

by using formula s=it+0.5at^2

Answer:

[tex]\fbox {Velocity = 60 m/s, Distance = 3600 m}[/tex]

Explanation:

Part (i) : Velocity at end of 2 minutes

Equation used ⇒ [tex]\boxed {v = u + at}[/tex]

⇒ t = 2 minutes = 2 x 60 = 120 seconds

⇒ v = 0 + (0.5)(120)

⇒ v = 60 m/s

Part (ii) : Distance covered

Equation used ⇒ [tex]\boxed {S = \frac{v^{2}-u^{2}}{2a}}[/tex]

⇒ S = (60)² - (0)² / 2(0.5)

⇒ S = 3600 m

A car initially traveling at 15.0 m/s accelerates at a constant rate of 4.50 m/s2 over a distance of 45.0 m, the time taken to cover this distance  is mathematically given as

t = 2.24 s

Generally, the equation for Kinematic relation is mathematically given as

S = ut + (1/2)at^2

Therefore

45 = 15t + 2.25 t^2

2.25 t^2 + 15 t -45 = 0

t = 2.24 s

In conclusion, the time is taken to cover this distance

t = 2.24 s

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1. Coulomb's Law

Coulomb's law states that the force of a charged object on another charged object is directly proportional to the product of their charge(s) and inversely proportional to the square of the distance between them.

[tex]F_{elec}=k\frac{|q_1||q2|}{r^2}[/tex]

k is a constant.

2. The Force Would Decrease.

Coulomb's law predicts the electric force between two charged objects in a medium.

[tex]F=\frac{1}{4\pi\in_0 } \frac{|q_1q_2|}{r^2}[/tex]

where K is the medium's dielectric constant.

Vacuum: [tex]k=1[/tex]

Plastic: [tex]k > 1[/tex]

Therefore, the force between the two balls will decrease when the plastic sheet is inserted.

3. The Junction Rule states that the sum of magnitudes of the currents directed into a junction equals the sum of the magnitudes of the currents directed out of the current.

4. A Toroid is a doughnut shaped object whose surface is a torus. It annular shape is generated by revolving a circle around an axis external to the circle. Some example uses are RF chokes which is an inductor to have a high impedance to RF current and low impedance to DC current. Another use is variable-frequency oscillator (VFO). The frequency is set by a tuned circuit using capacitors and inductors. The frequency can be changed by adjusting the components in the tuned circuit. Just one last example is in mixers. These are used in transformers for Diode Ring Mixers. Which result in being ready, built, and homebrew.

Answer:

The force of the string at the bottom is greater than the weight of the ball. The correct option is B.

When two or more forces are acting on the system of objects, then the to attain equilibrium, net force must be zero.

A girl at a state fair swings a ball in a vertical circle at the end of a string.

When the ball is at the bottom, the force acting will be

The tension in the string , T = mass x centripetal acceleration + Force of gravity

So, T = m x ac + mg

The tension in the cable at the bottom will have centripetal force and weight forces acting on it.

Thus, the force of the string at the bottom is greater than the weight of the ball.

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Answer:

Answer 740 H z, 1110 H z, 1480 H z

Explanation:

The F sharp note (370 Hz) makes the next three harmonics with frequencies of 740 Hz, 1110 Hz, and 1480 Hz, respectively.

It is necessary to have an understanding of the relationship between harmonics and the fundamental frequency in order to calculate the frequencies of the following three harmonics produced by the note F sharp, which has a pitch of 370 Hz.

The fundamental frequency, denoted by f1, is the first harmonic and corresponds to the frequency of the note (F sharp in this example) when it was initially played. Its pitch is 370 hertz.

The fundamental frequency (f1) is multiplied by two to get the second harmonic frequency (f₂), which is written as f₂ = 2 × f1.

The frequency of the third harmonic (f₃) is equal to three times the frequency of the fundamental tone, or f₃ = 3 × f₁.

The frequency of the fourth harmonic, denoted by f₄, is equal to four times the frequency of the fundamental tone. f₄ = 4 × f₁

If we know that the fundamental frequency, or f₁, is 370 hertz, then we can figure out the frequencies of the following three harmonics, which are as follows:

f₂ = 2 × 370 Hz, which equals 740 Hz

f₃ = 3 times 370 Hz, which equals 1110 Hz; f₄ = 4 times 370 Hz, which equals 1480 Hz

Following the frequency of the F sharp note (370 Hz), the next three harmonics produced have frequencies of 740 Hz, 1110 Hz, and 1480 Hz respectively.

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The statement which best describes Deena's error is: B. Include the area of the rectangle under the line to find displacement for constant acceleration.

A velocity vs. time graph can be defined as a type of graph that is used to graphically represent the rate of change of velocity of an object with respect to time.

Based on the information provided in the table shown (see attachment), the statement which best describes Deena's error is her not including of the area of the rectangle under the line, so as to enable her find displacement for constant acceleration.

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Complete Question:

Deena made a chart to summarize features of a velocity vs. time graph for objects with constant acceleration and objects with constant velocity.

Which best describes Deena's error?

A. The line for constant velocity is not horizontal; it is diagonal and slopes downward.

B. Include the area of the rectangle under the line to find displacement for constant acceleration.

C. Find acceleration by finding the area of the rectangle above the line.

D. Find velocity by calculating the slope of the line.

Answer:

B.1/2v1 that's the answer

Answer:

1.) color

2.) Gamma Rays

Explanation:

The difference in height between the ground floor and the third floor is

The pressure measured by the pressure gauge is called the gauge pressure.

Given is the the pressure in a water pipe in the ground floor of a building is 4×10⁵ Pa and three floors up is 2×10⁵ Pa. Density of water ρ = 1×10³ kg/m³​

From the Bernoulli's theorem,

ΔPg = ρgΔh

( 4×10⁵ -  2×10⁵) = 1000 x 9.81 x Δh

Δh = 20.4 m

Thus, the difference in height is 20.4 m

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The vector which shows the velocity of the yo-yo at this moment is A and is denoted as option A.

This is referred to the rate of change of distance with time and the unit is metre per seconds.

A shows the direction of motion is same as the direction of velocity and is the tangent at that particular point hence why it was chosen as the most appropriate choice.

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The initial velocity and the height of this building are 29 m/s and 780 meters respectively.

In order to calculate the initial velocity, we would apply the second equation of motion:

S = ut - ½at²

200 = u10 - ½(9.8 × 10²)

200 = u10 - 490

u10 = 490 - 200

u10 = 290

u = 290/10

Initial velocity, u = 29 m/s.

Next, we would determine the height of the building:

H = ut + ½at²

H = 29(10) + ½(9.8 × 10²)

H = 290 + 490

Height, H = 780 meters.

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The force of gravity increases as the product of their individual masses' increases

Hope it helps!

Given that one marble is twice as heavy as the other, the correct statement is: the heavier marble has twice as much kinetic energy as the lighter one

KE = PE = mgh

KE₁ = mgh

KE = PE = mgh

KE₂ = 2mgh

KE₂ / KE₁ = 2mgh / mgh

KE₂ / KE₁ = 2

Cross multiply

KE₂ = 2 × KE₁ =

KE₂ = 2KE₁

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