What is the speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy?

A conductor is a substance that allows heat or electricity to pass through it. Electricity is the flow of electrons. Metals are good conductors while insulators are substances that do not conduct electricity

An electric conductor is a material that allows electrical current to flow through it easily, whereas an electric insulator is a material that blocks the flow of electrical current. In other words, a conductor is any material that offers little resistance to the flow of electrical charge, whereas an insulator is any material that offers a lot of resistance to the flow of electrical charge.Metals are generally good conductors of heat and electricity.

Some of the best electrical conductors include silver, copper, and aluminum. The electrons in the outermost shell of an atom are known as valence electrons. Metals, in general, have only one, two, or three valence electrons that are loosely bound to the atom. This is what makes them good conductors of electricity.

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Answer:

The answer is C. Series.

Answer:

I think it is true I'm not saying it is but if you get another person who says its true say true

Explanation:

ANSWER

EXPLANATION

The speed of a wave is given by the formula:

where λ = wavelength

f = frequency

Hence, the wavelength of the wave is:

Therefore, the wavelength of the sound wave is:

The answer is option B.

Answer:

the answer is kinetic energy

Answer:

one billion to ten billion joules.

Explanation:

To keep a 100-watt light bulb going for one second, one hundred joules of energy will be used.

Answer:

In 3 lightning bolts, there is approximately 1 billion to ten billion joules.

Explanation:

Answer:

right    

Explanation:

The up and down forces cancel

  then you are left with a    -200    and a  + 400

     resulting in a + 200   (to the right)

The total distance covered is 21 km while their displacement is 14.87 km SouthWest.

The distance covered by a moving body is the product of the speed of movement and the total time taken.

Displacement, on the other hand, is the property of a body or an object to be moved from one place to another.

While distance is a scalar quantity, displacement is a vector quantity.

In this case, the total distance covered by Justing can be calculated as:

15 km + 5 km + 1 km = 21 km

The displacement can be calculated from the attached image:

\(hyp^2 = opp^2 + adj^2\)

         = \(14^2 + 5^2\)

               = 221

                 = 14.87 km

Thus, they have been displaced by 14.87 km from the starting point in the SouthWestern direction.

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answer:- external force is 2 N .

The force that impacts the ball motion is external force i.e. 2N.

Given that,

Based on the above information, the calculation is as follows:

= 7N - 5N

= 2N

This 2N represents the external force.

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Answer:

The problems discussed in the meeting of the Gram Sabha are: (i) Construction and maintenance of village roads and waterways, constructions of culverts on them and planting of trees, maintenance and repair of public wells, tanks and pits

Explanation:

Piping water from the Suru river and making an overhead tank in the villages.

(ii) Deepening the handpumps and cleaning the wells.

(iii) Conserving water and recharging it.

(iv) Name of Om Prakash should be in the BPL list.

Answer:

The Bowling Ball is Denser.

Explanation:

If we consider both balls in terms of mass they are very different.  Size and volume can be the same though.

What makes the mass?  Think of what fills each of the balls.

A Basketball is filled with air, which weighs very little.

Meanwhile, a bowling ball is filled with coverstock, made up of plastic, urethane and resin.  These materials weigh considerably more than air!

Answer:it the letter b I was just finished with this test

Explanation:

Answer:

The motorcyclist is 55 miles east of the small town.

Explanation:

Motion With Constant Acceleration

It's a type of motion where the velocity of an object changes uniformly in time.

The equation that rules the change of velocities is:

\(v_f=v_o+at\qquad\qquad [1]\)

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

The distance traveled by the object is given by:

\(\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]\)

Using the equation [1] we can solve for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

Solving [1] for t and substituting into [2] we get the following equation:

\(V_f^2=V_o^2+2aX\)

The motorcyclist has an acceleration of a=4\ m/s^2 and an initial distance of 5 m where he travels at vo=15 m/s.  It's required to calculate the distance when the speed is vf=25 m/s.

Solving the last equation for X:

\(\displaystyle X=\frac{V_f^2-V_o^2}{2a}\)

Substituting:

\(\displaystyle X=\frac{25^2-15^2}{2*4}\)

\(\displaystyle X=\frac{625-225}{8}\)

X = 50 m

Adding the initial distance:

The motorcyclist is 55 miles east of the small town.

A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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Answer:

6.5

Explanation:

Because 1.5+5=6.5

Despite its many benefits, solar energy also has some disadvantages. Socially, the initial cost of installing solar panels can be prohibitively expensive for low-income households, which may limit access to this renewable energy source.

The manufacturing of solar panels can have negative environmental impacts, such as the release of greenhouse gases during production. Economically, the intermittent nature of solar energy production can lead to challenges in integrating it into existing power grids, as well as fluctuations in energy prices. Finally, the use of solar energy can also have unintended consequences, such as land use issues or conflicts with indigenous populations over the installation of solar farms.

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According to the universal law of gravitation, the force due to gravity is directly proportional to the product of the masses of two objects and inversely proportional to the square of the distance between them.

The force of attraction between two objects caused by their masses is described by the universal law of gravitation, a physical principle put forth by Sir Isaac Newton. This law states that every particle of matter attracts every other particle in the cosmos with a force that is directly proportional to the product of their masses and inversely proportional to the square of their separation.

The equation provides the law's mathematical expression:

F = G * (m1 * m2) / r^2

Where r is the distance between the centers of the two objects, m1 and m2 are their masses, and G is the gravitational constant.

The gravitational constant is a fundamental constant of nature that has a value of approximately 6.674 x 10^-11 Nm^2/kg^2.

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Given:

The mass of the ball is

The initial height of the ball is

The initial speed of the ball is

To find:

the impact speed of the ball when it strikes the ground

Explanation:

The initial potential energy of the ball is

The initial kinetic energy is

The final energy of the ball is fully kinetic energy. Let the final impact speed of the ball is

We can write, using the energy conservation principle that

Hence, the final impact speed of the ball is 46.1 m/s.

Indeterminate structures are important because they can distribute loads efficiently, increase structural stability, and provide more aesthetically pleasing designs.

Indeterminate structures are those in which the forces are not completely known and the structural reactions cannot be determined by applying equations of equilibrium alone. These structures require both strength and rigidity for their stability. Moreover, they are often used for large span structures such as bridges and skyscrapers, where they are more efficient and cost-effective.
Indeterminate structures are able to distribute loads efficiently and reduce the size of members. In other words, they can carry more weight with less material. This is because the loads are distributed among several members rather than being concentrated on a single member. As a result, they are lighter and more economical.
Indeterminate structures also provide more stability to the overall structure. This is because they are able to redistribute loads to other members when one member fails. In addition, they are less susceptible to sudden collapse and can withstand a certain degree of deformation or damage.
Lastly, indeterminate structures often provide more aesthetically pleasing designs. Architects are able to create unique shapes and forms, which are not possible with simple structures. For instance, the Sydney Opera House is an example of a structure that is indeterminate in nature. It was designed using computer algorithms to create a unique shell structure, which was not only visually striking but also structurally sound.
In conclusion, indeterminate structures are important for their ability to distribute loads efficiently, provide stability, and offer unique designs. They have been used in many real-life cases, including bridges, skyscrapers, and cultural centers, to provide efficient and aesthetically pleasing structures.

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Answer:

the density is 0.301 :)

Transformation of Energy

Governments assist in enhancing the infrastructure necessary for companies to flourish and helps business provide the goods and services that people need and want.

What is economics?

Economics is the study of how limited resources are used to create outputs, such as commodities and services, that are then distributed among individuals. Resources serve as the resources for creating outputs. Products and services are created by combining resources. The necessary raw ingredients are provided by land and natural resources. Raw materials are turned into finished products and services by labor.

Businesses perform better when they can effectively transport raw materials to factories and deliver finished goods to plants and markets. Governments assist in enhancing the infrastructure necessary for companies to flourish. Roads, bridges, rail lines, airports, seaports, energy transmission lines, and telecommunications networks are all included in this.

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Answer: 120 volts

Explanation:

Answer: D. thousands to millions of years

Explanation: Stages within a rock's cycle cannot happen quickly. The formation and deterioration can take thousands to millions of years to occur.

I hope this helps!

Good luck <3

Answer:

The answer is Continental Grip

Answer:

The capacitance C of a capacitor is defined as the ratio of the maximum charge Q that can be stored in a capacitor to the applied voltage V across its plates. In other words, capacitance is the largest amount of charge per volt that can be stored on the device: C = Q V . 1 F = 1 C 1 V .

Explanation:

A capacitor's capacity to hold an electric charge when a potential difference (voltage) is applied across its plates is measured by the capacitance of the device.

It can be calculated using the formula C = Q/V,

where Q is the electric charge stored on the capacitor in coulombs (C), C is the capacitance in farads (F), and V is the voltage across the capacitor in volts (V). The capacitor's physical properties, such as the area of the plates, the space between them (dielectric separation), and the substance between the plates (dielectric constant), all affect capacitance. A better charge storage capability is indicated by a higher capacitance value.

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The variable atmospheric component that can exist in all three states of matter (solid, liquid, and gas) at the temperatures and pressures that normally exist on Earth is water.

Water is a unique substance that can exist in all three states of matter within the range of temperatures and pressures found on Earth's surface.

In its solid state, water appears as ice or snow, typically at temperatures below the freezing point of water (0 degrees Celsius or 32 degrees Fahrenheit).

In its liquid state, water is the most common form and is present in lakes, rivers, oceans, and other bodies of water. It remains in the liquid state within a specific temperature range, typically between 0 and 100 degrees Celsius (32 and 212 degrees Fahrenheit) at standard atmospheric pressure.

In its gaseous state, water exists as water vapor, which is an invisible gas that is part of the Earth's atmosphere. Water vapor is present in varying amounts and plays a crucial role in the water cycle, including evaporation, condensation, and precipitation.

The ability of water to exist as a solid, liquid, or gas under normal atmospheric conditions is vital for sustaining life and shaping Earth's climate and weather patterns.

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Her mass is approximately equal to 27 kilograms.

First of all, you need to understand that momentum is a conserved quantity and the solution to this problem involves elastic collision.

Momentum can be defined as p = mv where p is momentum, m is mass, and v is velocity. Just like energy, momentum is a physical quantity that is conserved in an isolated system. Momentum is conserved as a result of Newton's third law, which states that \(F_A=-F_B\).

You are given that the ice skaters bounce off each other, meaning the collision is elastic. Remember that in an elastic collision, m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂ where

Suppose that m₁ = 49 kg, m₂ = x, u₁ and u₂ = 0 m/s, v₁ = 2.1 m/s, and v₂ = 3.81 m/s. Then the mass of the other ice skater is as follows:

49 · 0 + x · 0 = 49 · 2.1 + x · 3.81

0 = 102.9 + 3.81x

3.81x + 102.9 = 0

3.81x = -102.9

x ≈ -27

Since a mass value can't be negative, the absolute value of x is 27. Therefore, it's her actual mass in kilograms.

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The pressure of the air after being accelerated isentropically to a velocity of 400 m/s and a temperature of 400 K is approximately 1.639 atm.

To solve this problem, we can use the isentropic relations for an ideal gas. These relations allow us to calculate the pressure ratio of an isentropic process given the initial and final states.

The isentropic relation for an ideal gas is given by:

(P2 / P1) = (T2 / T1) ^ (k / (k - 1))

where P1 and P2 are the initial and final pressures, T1 and T2 are the initial and final temperatures, and k is the specific heat ratio.

P1 = 1 atm

T1 = 300 K

T2 = 400 K

k = 1.4

We can substitute these values into the equation and solve for P2/P1:

(P2 / 1 atm) = (400 K / 300 K) ^ (1.4 / (1.4 - 1))

(P2 / 1 atm) = (4/3) ^ 1.4

(P2 / 1 atm) ≈ 1.639

Now, we can solve for P2 by multiplying both sides of the equation by 1 atm:

P2 ≈ 1.639 atm

Therefore, the pressure of the air after being accelerated isentropically to a velocity of 400 m/s and a temperature of 400 K is approximately 1.639 atm.

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