calculate the centripetal force on the end of a 52.0 m (radius) wind turbine blade that is rotating at 0.42 rev/s. assume the mass is 3.8 kg.

Given that the radius of the circular path is r = 142 m and the coefficient of the friction is

The condition for the car to travel safely is

Frictional force = centrifugal force

Here, m is the mass of the car and the acceleration due to gravity is g = 9.8 m/s^2.

v is the maximum speed of the car.

Explanation:

Three equations of motion are as follows:-

the transverse Wave which is Answer:2

Answer:

1

Explanation:

amplitude is the maximum distance from the rest of the particles. amplitude is thus measured from the rest position to the peak of a crest or of a trough.

as seen below, graph 1 has an amplitude of 1 while both graph 2 and 3 has an amplitude of 2.

Answer:

The distance from an object to light is not a well-defined concept. However, light intensity decreases as the distance between the object and light source increases. This is because light spreads out as it travels away from its source

Answer: hello the image is missing but am able to provide you with an answer to your but I am unable to attach the image

Explanation:

Molecules at point A compared to molecules at point B shows that they are

The movement of molecules is caused by the application of energy in various forms especially thermal energy

Answer:

The answer is A!

Explanation:

Got it right on edge 2021 :>

In a capacitor, the peak current and peak voltage are related by the capacitance of the capacitor and the frequency of the alternating current passing through it. This relationship is given by the formula Ipeak = C x Vpeak x 2πf, where Ipeak is the peak current, Vpeak is the peak voltage, C is the capacitance, f is the frequency of the alternating current, and 2π is a constant.

In a capacitor, the peak current and peak voltage are related by the capacitive reactance (Xc). The capacitive reactance is given by the formula Xc = 1/(2πfC), where f is the frequency of the alternating current (AC) signal, and C is the capacitance of the capacitor.

The peak current (Ip) can be calculated using Ohm's Law: Ip = Vp/Xc, where Vp is the peak voltage. So, the peak current and peak voltage are related through the capacitive reactance in a capacitor.

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Answer:

B. The law of conservation of energy

Explanation:

The law of conservation of energy states that energy can neither be created or destroyed which means that a perpetual motion machine, which creates its own power and energy, cannot be true since energy cannot be created.

The centripetal force of the object with a mass of about 100g will be 31.42 Newtons.

A centripetal force is a net force which acts on an object to keep it in the state of motion along a circular path.

The angular velocity is defined as "the angle changing over time."

From the given of the problem:

m = 100g

rate of revolution = 50 rev / min

Therefore, using the formula:

angular velocity = rate of revolution x 2*pi / revolution

Angular velocity = (50 revs / min) x (2*pi radians / rev) = 100*pi radians / min

Centripetal force = mass × angular velocity

Centripetal force = 0.1 × 100π

Centripetal force =  31.42 Newtons

Therefore, the centripetal force will be 31.42 Newtons.

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An electrical cabinet is installed so the door can be opened to 75° before being stopped by another piece of installed equipment. This is a violation.

The scenario described in the question is a violation of the National Electrical Code (NEC) 110.26(A)(2), which requires that working spaces around electrical equipment be of sufficient size to allow safe operation and maintenance of the equipment. Specifically, the NEC requires that the minimum clear distance in front of electrical equipment be 3 feet or the width of the equipment, whichever is greater, and that the working space around the equipment must extend from the floor to a height of 6 feet 6 inches or the height of the equipment, whichever is greater.

In the scenario described, the door of the electrical cabinet can only be opened to 75 degrees before being stopped by other equipment, which may prevent safe operation and maintenance of the equipment, and thus violates NEC 110.26(A)(2).

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Answer:

1 deg C = 5/9 deg F         (Ex. 212 F - 32) * 5/9 = 100

So deg F = 9/5 deg C = 9/5 * 2.9 = 5.2 deg F

International space station is the mission of NASA. It has launched 134 successful space missions.

International space station is a huge place in the space but in the close orbit with all possible facilities for astronauts , scientists and others

The National Aeronautics and Space Administration (NASA) is an acronym for the National Aeronautics as well as Space Administration. NASA was established as a division of the United States government on October 1, 1958. NASA is just in charge of all research and technology related to aviation and space in the United States.

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Answer:

Cold temps. . .

Explanation:

Hope it helps!

Gravity causes cast of gases to clump together to begin forming new stars and planets.

Gravity binds the gas and dust together. If the cluster is large enough, it produces a star—increased pressure from gravitational collapse boosts the temperature, forcing nuclear fusion to occur in its center.

The dust and gases in a nebula are widely dispersed, yet gravity can gradually bring clumps of dust and gas together. As these clusters grow in size, their gravity grows stronger and stronger. The clump of dust and gas eventually becomes so large that it collapses due to its own gravity.

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The contamination hazard that is not considered when installing heating, ventilating, and air conditioning systems is radiation contamination.

One contamination hazard that is not typically considered when installing heating, ventilating, and air conditioning (HVAC) systems is biological contamination from outside sources. While HVAC systems are designed to filter out dust, dirt, and other airborne particles, they may not be equipped to handle biological contaminants, such as bacteria or viruses, that can be introduced from outside sources.

To minimize the risk of biological contamination, it is important to properly maintain HVAC systems, including changing filters regularly, ensuring proper ventilation, and regularly cleaning and disinfecting the system. Additionally, it may be necessary to incorporate additional air purification measures, such as UV germicidal irradiation or biocidal treatments, to ensure a safe and healthy indoor environment.

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Answer:

D. Malleable

Explanation:

Gold is metallic, with a yellow colour when in a mass, but when finely divided it may be black, ruby, or purple. It is the most malleable and ductile metal; 1 ounce (28 g) of gold can be beaten out to 300 square feet. It is a soft metal and is usually alloyed to give it more strength.

When seismic waves pass from a shallower to deeper rock layer, the velocity of the waves increases.

As seismic waves travel through the Earth's crust, they encounter different types of rock and other materials that can affect their velocity. In general, seismic waves travel faster through more dense and rigid materials, and slower through less dense and more elastic materials.

The increase in velocity when seismic waves pass from a shallower to deeper rock layer can cause the waves to refract or bend, which can have important implications for seismic imaging and the interpretation of earthquake data.

For example, if seismic waves encounter a steeply dipping rock layer as they pass from a shallower to deeper layer, the waves may refract and create a pattern of interference known as an "echo" or "ghost" reflection. This effect can make it difficult to accurately locate seismic sources and interpret the structure of the Earth's crust.

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Answer:

b. they move in convection currents.

Explanation:

i learned this in 4th grade

The blower uses 100 volts of the difference in potential when consumes current of 3 c/s in a time of 5.10min

The bulb is filled with a gas, typically a mixture of nitrogen and argon, that reduces the oxygen in the bulb to help stop the filament from burning. A filament with a high electric current resistance is made of a special wire, usually tungsten.

First, we should convert the power and the time:

Power of blower = 3.0 x 10² J/s

                         = 3.0 x 10² W

Time = 5.10 min

                         = 5.10 x 60 s

                                 = 306 s

Now, Charge = I × t

                        = 3 A × 306 s

                                      = 918 C

Finally, we can calculate the potential difference consumed:

                             ΔV = P × t / Q

                          ΔV = (3.0 x 10² W) × (306 s) / (918 C)

                               ΔV = 100 V

An electrical circuit is completed when a switch is turned on, allowing electric current to flow through its wires. Through the switch, along the wires, and into the light bulb, the current flows from the power source.

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The work W done from x = 5 m to x = 10 m by the one-dimensional force depicted in the graph is 250 J

The work done by the force is the product of the force and distance traveled.

The product of the force and distance traveled is the sum of the area of the two triangles that are formed from x = 5 to x = 10

The area of the first triangle = 1/2 * 100 * 1

The area of the first triangle = 50 J

The area of the second triangle = 1/2 * √(100² + 1²) * 4

The area of the second triangle = 0.5 * √10001 * 4

The area of the second triangle = 200 J

Therefore, the work done = 200 + 50 J

Work done = 250 J

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All we need to do in order to find out the direction is to take into account the sign of the charge. As they are both positive, the particles will repel each other, which can be seen on the following drawing:

Thus, particle q2 will try to push particle q1 to the left

The answer is: -

Answer:

Height is 11.25m

Explanation:

Given the following data;

Initial velocity, u = 0

Final velocity, v = 15m/s

Acceleration due to gravity, g = 10m/s²

To find the height, we would use the third equation of motion;

\( V^{2} = U^{2} + 2aS \)

Where;

\( V^{2} = U^{2} + 2aS \)

Making S the subject, we have;

\( S = \frac {V^{2} - U^{2}}{2a}\)

But a = g = 10m/s²

Substituting into the equation, we have;

\( S = \frac {15^{2} - 0^{2}}{2*10}\)

\( S = \frac {225 - 0}{20}\)

\( S = \frac {225}{20}\)

S = 11.25m

Therefore, the ball will reach a height of 11.25m before it begins to fall.

Hooke's Law gives the relationship between applied forces m·g, 2·m·g and extensions of an elastic material x, 2·x based on its elasticity.

Reason:

Given parameter;

Spring constant = 30 N/m

Value of the extension, x = 0.5 m

Extension of the spring by mass, m = x

Extension of the spring by mass, 2·m = 2·x

Required:

To find the value of mass m.

Solution:

The measures of weight and extension from the diagram are;

\(\begin{array}{|l|cl|}\mathbf{Extension}&&\mathbf{Weight \ (Force), \, F}\\0&&0\\x&&m \cdot g\\2 \cdot x&&2 \cdot m \cdot g\end{array}\right]\)

The rate of change of the extension with the applied force are;

\(Between \ second \ and \ frirst\ row, \ \dfrac{\Delta F}{\Delta x} =\dfrac{m \cdot g}{x}\)

\(Between \ third \ row \ and \ second \ row, \ \dfrac{\Delta F}{\Delta x} = \dfrac{2 \cdot m \cdot g - m \cdot g}{2 \cdot x - x} = \dfrac{m \cdot g}{x}\)

Therefore;

The rate of change of the extension with the applied force, \(\dfrac{\Delta F}{\Delta x}\), is a

constant equal to m·g, and the spring obeys Hooke's law.

Where;

F = The spring force

Therefore;

∴ m·g = -(-k·x) = 30 N/m × 0.5 m

Where;

g = Acceleration due to gravity = 9.81 m/s²

The mass, m ≈ 1.53 kg

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Answer:

•Helps to maintain va proper pH in the body which supports cell function.

•Carries electrolytes such as sodium and potassium to our muscles.

Answer:

fire

Explanation:

burning the the oil

A basketball rolls across a classroom floor without slipping, with its center of mass moving at a certain speed. A block of ice of the same mass is set sliding across the floor with the same speed along a parallel line  (c) The two quantities are equal is correct option.

The ice block and the basketball both move at the same pace, giving them the same amount of kinetic energy. The two values are equal, hence the answer is (c).

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The x, y and z projections of the net force on the loop due to the field in terms of q0 are given by:Fx = ILB0 - I πr2 dB cos q0Fy = 0Fz = I πr2 dB sin q0

The given situation is shown in the following diagram: Current carrying loop in a magnetic field.First we will find the magnetic field B produced by the current carrying loop at a point P. P is located at a distance x from the centre of the loop at a height z from the plane of the loop. This is shown in the following diagram:Biot-Savart's law gives the magnetic field dB produced by a small element of the loop, dL, at P.

The direction of dB is given by the right hand rule. Curl the fingers of the right hand along dL. The thumb points in the direction of dB. In the diagram, dB is into the plane of the paper since dL is directed out of the paper.The magnitude of dB is given by:dB = μ0/4π (I dL sinθ)/r2where θ is the angle between the normal to the plane of the loop and the vector r from the element to the point P.

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The formula of a spring-mass-damper system is given by md2x/dt2 + cdx/dt + kx = F(t).

The spring-mass-damper system is a common model used in physics and engineering to describe the behavior of various mechanical systems, such as a car suspension system or a building during an earthquake. The equation of motion for a spring-mass-damper system is typically given by:

md2x/dt2 + cdx/dt + kx = F(t)

where m is the mass of the object attached to the spring and damper, x is the displacement of the mass from its equilibrium position, t is time, c is the damping coefficient, k is the spring constant, and F(t) is an external force applied to the system at time t.

The term md2x/dt2 represents the acceleration of the mass, while cdx/dt represents the damping force (i.e. resistance to motion) caused by the damper, and kx represents the force exerted by the spring. The external force F(t) can be any force applied to the system, such as an oscillating force or a constant force.

The solution to this differential equation depends on the initial conditions (i.e. the initial position and velocity of the mass) and the specific values of the parameters m, c, and k. The behavior of the system can be analyzed using various techniques, such as finding the natural frequency of the system or using numerical simulations to model the motion over time.

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The answer is W = 1.06 MJ.

Now develop and express of Force required:

                                            F = p*V*g

                                            F = 1000*(2*0.5*x*8*dx)*g

                                            F = 78480*x*dx

- Now, the work done is given by:

                                   W = F.s

Where s is the distance from the top of the hose to the differential volume:

                                        s = (5 - x)

We have the work as follows:

                              dW = 78400*x*(5-x)dx

Now integrate the following express from 0 to 3 till the tank is empty:

 W = 78400*(2.5*x^2 - (1/3)*x^3)

 W = 78400*(2.5*3^2 - (1/3)*3^3)

 W = 78400*13.5 = 1058400 J

To find the weight of water, begin by way of finding the density(1 kg/L at 39.2°) and the extent of water. Convert the volume of water to liters after which multiply by way of the density to discover the burden.

Density is useful in calculating the load of materials which can be tough to weigh. you may decide its weight without a doubt with the aid of multiplying the density by using the dimensions, or quantity, of the item.

The unique weight, additionally called the unit weight, is the weight in keeping with the unit quantity of cloth. A typically used value is the precise weight of water in the world at 4 °C (39 °F), which is nine.807 kilonewtons consistent with cubic meters or 62. 43 pounds-force in keeping with cubic foot.

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Answer:

it matters how far she traveled

Explanation: