Which of the following forces does NOT act on an object sliding down an incline plane?

A. force of tension
B. force of gravity
C. normal force
D. force of friction

The average power developed by the boy during the climb is approximately 29.4 W.

In physics, the amount of energy transferred or converted per unit time is called power.

total height = number of steps x height of each step

total height = 30 x 0.15 m = 4.5 m

Given, time = 60 s

As power = work done / time

work done = force x distance

force = mass x gravity

mass is boy's mass (40 kg) and gravity is acceleration due to gravity (9.81 m/s²).

force = 40 kg x 9.81 m/s² = 392.4 N

The distance that the boy moves is equal to the total height that he has climbed: distance = total height = 4.5 m

work done = force x distance

work done = 392.4 N x 4.5 m = 1765.8 J

power = work done / time

power = 1765.8 J / 60 s

power ≈ 29.4 W

Therefore, the average power developed by the boy during the climb is approximately 29.4 W.

As for the anomalous behavior of water, water has a higher boiling point and melting point as compared to other substances with similar molecular weight. This is due to the strong hydrogen bonding between water molecules, which requires more energy to break the bonds and change the state of water from solid to liquid to gas.

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Therefore, the energy stored in the capacitor is 2.95 × 10⁻¹¹ joules (J).

The separation between the plates of a capacitor is increased to 4.40 mm. How much energy is stored in the capacitor now?

A capacitor is an electrical device that stores electric charges. The energy stored in a capacitor can be determined by the formula

E = (1/2) × C × V²

where E is the energy stored, C is the capacitance, and V is the voltage across the capacitor.

Let us assume that the capacitance of the capacitor in question remains constant as its separation is increased.

Therefore, the voltage across the capacitor will decrease due to the increase in separation between its plates, as shown by the formula

V = Q/C

where V is the voltage, Q is the charge on the capacitor, and C is the capacitance.

The amount of charge on the capacitor remains constant, since no external factors affect the charge on the capacitor.

Thus, the decrease in voltage across the capacitor can be calculated using the formula

V₁/V₂ = d₂/d₁

where V₁ is the initial voltage, V₂ is the final voltage, d₁ is the initial separation, and d₂ is the final separation.

Therefore,

V₂ = V₁ × d₂/d₁

Substituting the values of V₁, d₁, and d₂, we get

V₂ = (1.5 × 10⁻⁶ C)/(8.85 × 10⁻¹² F × 3.2 mm) × 4.4 mm

V2 = 0.777 V

Therefore, the energy stored in the capacitor can be calculated using the formula

E = (1/2) × C × V²

Substituting the values of C and V, we get

E = (1/2) × 8.85 × 10⁻¹² F × (0.777 V)²

E = 2.95 × 10⁻¹¹ J

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The string is under 4.82N of tension.

Tension is the pulling force exerted on a string, rope, cable, or wire when it is stretched or pulled. The tension on a string is equal to the amount of force applied to it divided by its cross-sectional area.

The tension on the string of a conical pendulum can be calculated using the equation:

\(T =\frac{ (4\pi^2m)}{(L^2T^2)},\)

where T is the string's tension, m is the pendulum's mass, L is the string's length, and T is the pendulum's period of motion.

m=mass of pendulum=0.400kg

L=length of string =0.9m

T=pendulum's period of motion=1.4s

Plugging in the given values, we get:

\(T =\frac{ (4 \pi^2 * 0.400 kg) }{ (0.9 m^2 * 1.4 s^2)}\\\\T = 4.82 N\)

Therefore,The Tension on the string is 4.82N

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The magnitude of force exerted on the woman by the floor when the lift is accelerating is 150 Newton.

Given the following data:

To calculate the force exerted on the woman by the floor when the lift is accelerating, we would apply Newton's Second Law of Motion:

Mathematically, Newton's Second Law of Motion is given by this formula;

\(Force = mass \times acceleration\)

Substituting the given parameters into the formula, we have;

\(Force = 60 \times 2.5\)

Force = 150 Newton.

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We have that the dipole moment in nCm is considering the parameters

electric field strength 1.5 cm and  the axis of the dipole, is 1.5×105 N/C. is

From the question we are told

The electric field strength 1.5 cm from an electric dipole, on the axis of the dipole, is 1.5×105 N/C.

Generally the equation for the Electric field  is mathematically given as

\(E=\frac{2P}{4\pi*r^3}\\\\Therefore\\\\P=\frac{ 1.5×10^5*1.5*10^{-3}}{2}\\\\\)

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Answer:

If your form is correct (b)

Answer:

The answer is B if your form is correct

That is correct

There is not answer choices but I think its true

Are you good with compare and contrasting?

If so, look at my recent question please

It would have the least kinetic energy at point A

Kinetic energy is the energy an object possesses as a result of its motion. It is the energy associated with the movement of an object and is proportional to the mass of the object and the square of its velocity. The formula for kinetic energy is given by:

KE = 0.5 * m * v^2

where m is the mass of the object and v is its velocity. Kinetic energy is a scalar quantity and is measured in joules (J) or other units of energy.

Since the motion commenced at the point A, that is the point of the least kinetic energy.

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(a) Lowest energy for electrons: 171.6 eV. Quantum numbers: (n1=1, n2=1, n3=1) to (n1=2, n2=2, n3=1). (b) Lowest energy for non-exclusion particles: 21.45 eV. Quantum numbers: (n1=1, n2=1, n3=1).

For electrons (which obey the exclusion principle), each energy state can be occupied by two electrons with opposite spins. The energy states are filled in ascending order, and the energy for each state is given by E = (h^2/8mL^2)(n1^2 + n2^2 + n3^2), where h is Planck's constant, m is electron mass, and n1, n2, n3 are quantum numbers. Filling the lowest eight energy states, we get a total energy of 171.6 eV.

For particles with the same mass as an electron but not obeying the exclusion principle, all particles can occupy the lowest energy state with quantum numbers (n1=1, n2=1, n3=1). The lowest energy for this system is 21.45 eV.

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Answer:

D.

Driving and talking on any type of cell phone increases the chance of missing traffic signals.

Explanation:

correct on edge2021

Answer:

the answer is d thank me later

Explanation:

Answer:

it is very hard but i am trying to help you.

Explanation:

Answer:

b and c are the answers

A is an opinion, D is a superstitious belief because they haven’t found Jesus obviously

Answer:

can you take a picture of the whole paper so I can see exactly what else it says so I can figure out the solution the only thing I see is wave speeds and speed of the sounds and distance and frequency

Answer:

0.2 hours

Explanation:

\( \frac{7}{35} = 0.2\)

The original dimensions of the piece of metal were approximately 14.62 inches by 24.62 inches.

Let's assume the original width of the rectangular piece of metal is "x" inches.

According to the given information, the length of the rectangular piece is 10 inches longer than its width. Therefore, the length can be represented as "x + 10" inches.

When squares with sides 2 inches long are cut from the corners, the width and length of the resulting box will be reduced by 4 inches each (2 inches from each side). So, the dimensions of the box will be:

Width: x - 4 inches

Length: (x + 10) - 4 inches, which simplifies to x + 6 inches.

The volume of a rectangular box is given by the formula: Volume = Length × Width × Height.

In this case, the height of the box is 2 inches.

Given that the volume of the box is 913 in^3, we can set up the equation:

(x - 4) × (x + 6) × 2 = 913

Simplifying the equation:

2(x^2 + 2x - 24) = 913

2x^2 + 4x - 48 = 913

2x^2 + 4x - 961 = 0

Using the quadratic formula, we find:

x ≈ 14.62 or x ≈ -32.62

Since the dimensions cannot be negative, the width of the original piece of metal is approximately 14.62 inches.

The length can be calculated by adding 10 to the width:

Length ≈ 14.62 + 10 ≈ 24.62 inches.

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Conversion of electromagnetic (EM) energy from the sun into other forms of energy occurs for the following options:

a. Biofuels

c. Solar thermal power

e. Wind power (EM to air movements)

A- Biofuels: During photosynthesis, plants capture electromagnetic energy from the sun and convert it into chemical energy, stored in the bonds of organic molecules, such as glucose. This process allows for the conversion of EM energy to chemical energy in the form of biofuels.

c. Solar thermal power: Solar thermal power plants use mirrors or lenses to concentrate sunlight, which is then converted into heat energy. This thermal energy can be used to generate steam, which drives a turbine and produces mechanical energy.

e. Wind power: Wind turbines harness the kinetic energy of moving air, which is ultimately driven by the sun's uneven heating of the Earth's surface. The sun's energy heats the atmosphere, creating temperature and pressure gradients that result in wind currents.

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(105 N/m) x (0.1 m)  =  10.5 Newtons.

Answer:

(105 N/m) x (0.1 m) = 10.5 Newtons.

Explanation:

apex quiz

Answer:

0.833m/s

Explanation:

1hr=60min

=30min

{1×30)÷60=1/2

4.5/1.5=3km/hr

3×5/18=5/6or0.833m/s

In component form, the displacement vectors become

• 350 m [S]   ==>   (0, -350) m

• 400 m [E 20° N]   ==>   (400 cos(20°), 400 sin(20°)) m

(which I interpret to mean 20° north of east]

• 550 m [N 10° W]   ==>   (550 cos(100°), 550 sin(100°)) m

Then the student's total displacement is the sum of these:

(0 + 400 cos(20°) + 550 cos(100°), -350 + 400 sin(20°) + 550 sin(100°)) m

≈ (280.371, 328.452) m

which leaves the student a distance of about 431.8 m from their starting point in a direction of around arctan(328.452/280.371) ≈ 50° from the horizontal, i.e. approximately 431.8 m [E 50° N].

plants

i hope its right and have a nice day

Answer:

number 1

Explanation:

A group of proteins that act as electron carriers make up the electron transport chain.

All of the electrons that enter the transport chain come from NADH and FADH2 molecules created during the glycolysis, pyruvate oxidation, and citric acid cycle, which are early phases of cellular respiration.

Electrons are transferred from one molecule to another in the electron transport chain, and the energy released during these electron transfers is utilised to create an electrochemical gradient. The energy held in the gradient is utilized in chemiosmosis to produce ATP.

NAD +start superscript, plus, end superscript (nicotinamide adenine dinucleotide, as illustrated below) and FAD are two forms of electron carriers that are particularly significant in cellular respiration (flavin adenine dinucleotide).

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A displacement of 14.14 m, connecting the identical beginning and finishing points, is larger than a distance of 20 m.

The sequence's displacement is computed as follows;

Δx = √[(x₂ - x₁)² + (y₂ - y₁)²]

Δx = √[(-5 - 5)² + (-5 - 5)²]

Δx = 14.14 m

This leads us to the conclusion that a displacement of 14.14 m, which links the identical beginning and finishing points, is more than a distance of 20 m.

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Answer: I think cars are designed to have crumble zone because lets say you're going 60-70 mph and you hit a brick wall that cant move, it would be a very hard jolt causing the beings inside to get thrown forward, but if it has a crumble zone it would slow the the jolt from is slowing down in the hit.

Answer:

a) the building of irrigation systems

Explanation:

Although b and c would also allow for farmers to grow more crops, I believe that the building of irrigation systems had the most impact. Irrigation systems allowed for farmers to have larger fields without having to spend a large amount of time watering the entire field.

Answer: I think it is a

Explanation:

The minimum work needed to push a 1000 kg car 300 m up a 17.5-degree incline

Given by the following steps;

Step-We calculate the gravitational potential energy (GPE) of the car as it's lifted up the incline. This will be equal to the minimum work required to push the car up the incline. The GPE is given by;GPE = mgh. Where m = mass of the car = 1000 kg; g = acceleration due to gravity = 9.81 m/s²; h = height gained = 300 sin(17.5°) = 84.4 mGPE = mgh = 1000 × 9.81 × 84.4 = 829,944 J

Step 2If we consider friction, we can calculate the minimum work required as follows:Total work done = work done against gravity + work done against frictionW = GPE + work done against friction

Where the work done against friction is given by; Wf = friction force × distance × cos(θ)Here θ = angle of incline = 17.5° and the friction force is given by the product of the effective coefficient of friction (µ) and the normal force. The normal force is equal to the component of the weight of the car that acts perpendicular to the incline.Nf = mg cos(θ)Wf = µNf × distance × cos(θ) = µmg cos²(θ) × distance × cos(θ) = µmgdcos²(θ)W = mgh + µmgdcos²(θ)Substituting m, g, h, d, and µ into the equation gives;W = 1000 × 9.81 × 84.4 + 0.25 × 1000 × 9.81 × 300 × cos²(17.5)W = 1,454,392 J

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L = I, where L is angular momentum, I is rotational inertia, and (the Greek letter omega) is angular velocity, is the formula for angular momentum.

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Answer: b. The United States Constitution

Explanation:

Montesquieu argued that the best form of government, was one where the legislative arm, executive arm, and judicial powers were separate. and in doing so helped kept each other in check to prevent any branch from becoming too powerful. Montesquieu’s separation of powers was not accurate when compared the government of England, But this was later adopted by Americans as the foundation of the U.S. Constitution.