Where should a presence-sensing device be placed on the press of Exercise? Exercise A part-revolution clutch press has a brake stop time of 0.37 second. At what minimum distance should two-hand controls be placed? If the press of Exercise had been a full-revolution press operating at 60 rpm and having four engagement points, at what distance should a two-hand trip device be placed?

The weight of the body on the surface of mars would be 333.9 Newtons.

Weight is the force exerted by the earth on an object at the surface of the earth and this force is directed towards the center of the earth. Mathematically -

W = mg

where -

[m] is the mass of object

[g] is acceleration due to gravity

Given is a body that weighs 900N on the surface of earth. Mars is a planet whose mass is one ninth and radius is one half that of the earth. The same body is now placed on mars.

Since the weight of the body is 900 N on earth, we can write -

W = mg

900 = m x 10

m = 900/10

m = 90 Kg

Now, we know for a body of mass [m] on a planet of mass [M], the gravitational force exerted by planet on the body will be -

F = GMm/r²

but

F = W = mg

So, we can write -

mg = GMm/r²

g = GM/r²

For the planet of mars, we can write -

g = GM[mars]/r[mars]²

g = (6.6743 × 10⁻¹¹ x 0.65 x 10²⁴)/(3185.5 x 10³)

g = 3.71 m/s²

So, the weight of the body on mars will be -

W = mg = 90 x 3.71

W = 333.9 N

Therefore, the weight of the body on the surface of mars would be 333.9 Newtons.

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Answer:

So work require will be 3888×10×10³J

Explanation:

⇒Work done=Change in kinetic energy

⇒KE=1/2mv²

⇒Mass->15000kg

⇒Velocity->72km/h

⇒KE=1/2×15000×(72)²

⇒KE=1/2×15000×5184

⇒KE=7500×5184

⇒KE=3888×10×10³J

Answer:

Star formation occurs most rapidly in the spiral arms, where the density of interstellar matter is highest.

The elevator does 24,000 Joules of work in lifting a 600 N person over a distance of 40 meters.

To calculate the work done by an elevator in lifting a person, we can use the formula:

Work = Force × Distance × cos(θ)

Where:

Force = 600 N (the weight of the person)

Distance = 40 m (the vertical distance the person is lifted)

θ = 0 degrees (cosine of 0 is 1, indicating the force and distance are in the same direction)

Plugging in the values:

Work = 600 N × 40 m × cos(0°)

= 600 N × 40 m × 1

= 24,000 N·m

= 24,000 J (Joules)

Therefore, the elevator does 24,000 Joules of work in lifting a 600 N person over a distance of 40 meters.

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Answer:

What happens when you throw a basketball up

toward the hoop? If you are lucky, the ball sinks

into the net, scoring two points before dropping

back down to the ground. The basketball isn’t

that heavy, so why doesn’t it stay up in the air

saying, “What comes up must come down”?

This saying is a simple explanation for what

causes the basketball to fall back to the ground.

It is being acted on by an invisible force called

gravity, which is the basic force in the universe

that attracts all objects to each other.

1 Gravity has existed since the beginning of the universe. It is hard to understand how or why it

works, but we know it is always there because it holds everything in the universe in place. First,

you need to understand that there is a gravitational attraction between you and Earth, between

Earth and the Moon, and between Earth and the Sun. Even though you can’t feel it, the

gravitational attraction between you and Earth is what keeps your feet planted firmly on the

ground. Imagine spinning around and around on a merry-go-round. As long as you are holding

on, then you stay on the merry-go-round, but if you ever let go, you will fly off and land on the

ground. This is a useful analogy in visualizing the gravitational attraction between Earth and

you. Earth is spinning on its axis and thanks to gravity, you are held to your position on Eart

rather than flying out into space. Explanation: this is what i can do!:)

Answer:

I believe gravity is the most important aspect of our universe. Without it we would all be floating off into the universe. There wouldn’t be any orbits; instead, all planetary bodies would simply float around, running into each other when they crossed paths and just wandering forever.

Explanation:

this is the best match

Answer:

dude if any body could answer that they deserve a Nobel prize because the formula to solve that would require the exact measurement of hadar or as commonly known beta centauri

Explanation:

The Number of turns that we can have in the secondary from the calculation is 8 turns.

A transformer is an electrical device that is used to transfer electrical energy from one circuit to another through the principle of electromagnetic induction. It consists of two or more coils of wire wound around a common iron core.

Given that;

Ns/Np = Vs/Vp

Then we have that;

Ns/100 = 120/15000

Ns = 120/1500 * 100

Ns = 8

Transformers are used for a variety of applications in electrical power systems and electronic circuits. They are commonly used to step up or step down the voltage of AC power.

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To find the wavelength (l) of the light when it is traveling in air and the smallest thickness (t) of the air film for which there is constructive interference, we can follow these steps:

Step 1: Identify the given values

- Thickness t1 (constructive interference) = 650 nm

- Thickness t2 (next constructive interference) = 910 nm

Step 2: Find the difference in thickness between t1 and t2

Δt = t2 - t1 = 910 nm - 650 nm = 260 nm

Step 3: Use the constructive interference formula for a thin film
2 * t = m * l

where m is the order of interference r) and l is the wavelength in air.

Step 4: Calculate the order of interference (m)

Since Δt corresponds to one order of interference (from one constructive interference to the next), we have:

2 * Δt = m * l
2 * 260 nm = m * l
m = 1 (smallest thickness for constructive interference)

Step 5: Find the wavelength (l) in air

Using m = 1 and t1 = 650 nm:

2 * t1 = l

2 * 650 nm = l

l = 1300 nm

Answer (a): The wavelength (l) of the light when it is traveling in air is 1300 nm.

Step 6: Find the smallest thickness (t) for constructive interference

Using m = 1 and the found value of l:

2 * t = 1 * 1300 nm

t = 1300 nm / 2

t = 650 nm

Answer (b): The smallest thickness (t) of the air film for which there is constructive interference for this wavelength of light is 650 nm.

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Answer:

W = 600 N

Explanation:

The mechanical advantage of any machine is the ratio of the load or weight to the effort applied. Hence, the general formula for mechanical advantage is as follows:

M.A = W/P

where,

M.A =Mechanical Advantage of Hammer = 10

W = Maximum force that could be generated = ?

P = Force created by me = 60 N

Therefore,

10 = W/60 N

W = 10*60 N

W = 600 N

A virtual and erect image is formed by concave mirror.

The focal length of the mirror is the distance between the lens and the image sensor.

It is also defined as the distance from a lens or mirror to the focal point.

It is also stated by the formula

\(\frac{1}{y} +\frac{1}{u} = \frac{1}{f}\)

u = -50 cm and f = 0.50 m (50cm)

\(\frac{1}{v} +\frac{1}{-50} =\frac{1}{50}\)

v= -50 cm

where - sign shows that image is virtual.

Magnification  m= \(\frac{v}{u}\)

m = -50/50

m = 0

hence, virtual and erect image will be formed.

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If a geothermal power plant produces 6000 watts of power for every 13000 watts of heat from water, so its efficiency is 46%.

Efficiency is defined as the proportion of energy which is wasted during a process. The rate at which energy is wasted needs to be reduced and there are a many ways to save energy, such as thermal energy. The formula of efficiency is equals to useful power out divided by total power in. Mathematically it is written as

Efficiency = useful power out ÷ total power in

Some amount of energy is always wasted from every machine, the efficiency should always be less than 1 or less than 100%. No machine is 100 percent efficient.

So we can conclude that if a geothermal power plant produces 6000 watts of power for every 13000 watts of heat from water, so its efficiency is 46%.

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The acceleration of the 12-kg box which push up a ramp is 4.96 m/s²

To solve this problem, we need to use the formula for the acceleration of an object on an inclined plane:

a = g(sin θ - μcos θ), where g is the acceleration due to gravity (9.81 m/s²), θ is the angle of the ramp, and μ is the coefficient of friction (which is 0 in this case since the surface is frictionless).

First, we need to find the angle of the ramp. We can use the fact that for each 5.00 m along the ramp, the box gains 3.00 m of height.

This means that the slope of the ramp is given by:

slope = rise/run = 3.00 m / 5.00 m = 0.6 To find the angle of the ramp, we can use the inverse tangent function:

θ = tan⁻¹(slope) = tan⁻¹(0.6) = 31.0°

Now we can plug in the values into the formula for acceleration:

a = g(sin θ - μcos θ) a = 9.81 m/s²(sin 31.0° - 0cos 31.0°) a = 4.96 m/s²

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Answer:

a

Explanation:

Answer:

=(220^2 +150^2)

/

put this on a square root

for you to get 266.2705391

round it to a whole number =266km/h

Explanation:

p

Safety symbols, danger symbols, or safety labels are graphical symbols that warn of or indicate hazards linked with an area or object. Images, pictograms, forms, words, phrases, sentences, or statements placed on walls, boards, buildings, doors, entrances, machinery, equipment, tools, transportation, roadways, or any other visible location are examples of safety symbols. The symbol alerts people to the presence of hazardous products or substances, as well as a hazardous environment, and warns them on how to stay safe or the potential repercussions if not avoided.

The given symbol means hammer.

A hammer is a hand tool that consists of a weighted "head" attached to a long handle and swung to produce an impact to a limited region of an item. This may be used to drive nails into wood, shape metal, or crush rock.

While all of these hammers have a round head for driving nails, the claw end may be used for prying, splitting wood, ripping drywall, and other minor demolition chores. A claw hammer's claw is curved, whereas a framing hammer's claw is straight. These hammers are ideal for the following tasks: woodworking

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Answer:

The sound is louder.

A longitudinal wave in an elastic medium, especially a wave producing an audible sensation.

The intensity of a sound wave is related to the amplitude of the wave, which is a measure of how much the air molecules are displaced from their resting position. When the amplitude of a sound wave increases, it causes more air molecules to be displaced, resulting in a higher sound pressure level and a louder sound.

This relationship between amplitude and perceived loudness is why, for example, turning up the volume on a stereo system increases the amplitude of the sound waves produced, leading to a louder sound.

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It is true that insurance is the defense for managing money because it ensures that your money is efficiently utilized even in your absence.

Insurance refers to a means of indemnity against a future occurrence of an uncertain event such as an accident, death, robbery etc.

Insurance is a way to protect one's assets from getting lost when faced with unforeseen circumstances.

For example;

Therefore, it is true that insurance is the defense for managing money because it ensures that your money is efficiently utilized even in your absence.

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Answer:

La velocidad angular del niño y del carrusel cuando se mueven juntos es 0.208 radianes por segundo.

Explanation:

Asumamos que tanto el niño como el carrusel no tienen carga externa aplicada sobre aquellos, de modo que se puede aplicar el Principio de Conservación de la Cantidad de Movimiento Angular:

\(m\cdot v \cdot R = (m\cdot R^{2}+I)\cdot \omega\) (1)

Donde:

\(m\) - Masa del niño, medida en kilogramos.

\(v\) - Velocidad lineal inicial del niño, medida en metros por segundo.

\(R\) - Radio máximo del carrusel, medida en metros.

\(I\) - Momento de inercia del carrusel, medida en kilogramo-metros cuadrados.

\(\omega\) - Velocidad angular final del sistema niño-carrusel, medida en radianes por segundo.

Si sabemos que \(m = 25\,kg\), \(v = 2.5\,\frac{m}{s}\), \(R = 2\,m\) y \(I = 500\,kg\cdot m^{2}\), tenemos que la velocidad angular final es:

\(\omega = \frac{m\cdot v\cdot R}{m\cdot R^{2}+I}\)

\(\omega = \frac{(25\,kg)\cdot \left(2.5\,\frac{m}{s} \right)\cdot (2\,m)}{(25\,kg)\cdot (2\,m)^{2}+500\,kg\cdot m^{2}}\)

\(\omega = 0.208\,\frac{rad}{s}\)

La velocidad angular del niño y del carrusel cuando se mueven juntos es 0.208 radianes por segundo.

Answer:

condensation, the process of changing from a gas to a liquid

The correct option is (e) 1,020 N/C.

The maximum value of the electric field at the upper atmosphere of the earth can be calculated using the formula:

E = c*sqrt(I/(2*ε0))

Where c is the speed of light, I is the intensity of sunlight, and ε0 is the permittivity of free space.

Substituting the given values, we get:

E = 3 x 10^8 m/s * sqrt(1,380 W/m^2 / (2 * 8.85 x 10^-12 F/m))

E ≈ 1,020 N/C

Therefore, the maximum value of the electric field at the upper atmosphere of the earth is approximately 1,020 N/C.

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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: Option C.

Explanation:

As the speed of plane increases and it moves forward it allows to push air on the bottom of the wings of the plane which results in increasing the pressure

The fact of air pressure on top of planes wing decreases with the increase bin plane's speed is based on Bernoulli’s Principle which states that with the fast moving air, the pressure decreases.

Therefore,n when the plane moves up it's wing pushes air down and on the same time the air pressure decreases at the top of the wing, this difference between the high and low pressure allows the flight to lift up.

Hence, the correct option is C.

The average velocity of the car for the entire trip is 0.018 km/h.

The velocity of the trip is determined from the ratio of change of displacement to total time of motion.

The total displacement of the motion = ( 30 m North -  30 m South) + 40 m est = 40 m west = 0.04 km west

The total time of motion = 2.22 hours

The average velocity of the car for the entire trip is calculated as follows;

v = ( 0.04 km ) / ( 2.22 hrs )

v = 0.018 km/h

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The speed between P and Q remains the same throughout the 2.0-second interval.

The speed of the bubble between positions P and Q can be determined by dividing the displacement by the time taken. In this case, the displacement is the distance between positions P and Q, and the time taken is 2.0 seconds.

To calculate the speed, we need to know the numerical values for the displacement and the time taken. Let's assume that the displacement is represented by Δx, and the time taken is 2.0 seconds.

The speed can then be calculated using the formula: speed = displacement / time.

For example, if the displacement Δx is 10 meters and the time taken is 2.0 seconds, the speed of the bubble between P and Q would be 10 meters / 2.0 seconds = 5 m/s. It's important to note that in this scenario, since the bubble is rising at a constant speed, the speed between P and Q remains the same throughout the 2.0-second interval.

The question was incomplete. find the full content below:

A student determines the average speed of a bubble rising through a liquid at constant speed. When the student starts the stopwatch the bubble is at position P. After 2.0 s the bubble is at position Q.

What is the speed of the bubble between P and Q?

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The star Betelgeuse is about 600 light-years away. If it explodes tonight, approximately: we won't know about it until 600 years from now.

Rather than measuring time, a light-year measures distance (as the name might imply). The distance a light beam travels in a single Earth year is measured in "light-years," which is roughly equivalent to 6 trillion miles (9.7 trillion kilometers).

Because the cosmos is expanding, the light that goes the farthest is stretched the most, resulting in the object that emitted that light being farther away. The expanding cosmos is the reason we can see things up to 46.1 billion light-years away. According to a common model of the Universe, some of the most recently discovered objects may be more than 13 billion light years away.

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Answer:

Distance = 10m

Imagine a triangle

Length = 4 - 1 = 3

Height = 2 + 2 =4

Hypothenuse = Displacement

Displacement = 5