what are the magnitude and location (with respective to point a) of the resultant force on the horizontal gate? the gate width is w. fluid density is r. you can leave your answer in terms of variables (w, r, and g).

Answer:

(a) Kinetic energy of the cart is 648.32 J.

(b) Speed of the cart is 11.44 m/s.

Explanation:

From the attached below figure we came to know that,

Mass of the crate is 10 kg (m)

Initial speed of the crate is 1.2 m/s (v)

Coefficient of friction on a rough plane is 0.286 (µ)

Force on the cart is 150 N (F)

The distance which crate is moved (d) is 8.05 m.

Calculation of kinetic energy:

Acceleration of the cart:

We know that,

F = F – m × g × sinθ - µ × m × g × cosθ (F = ma)

m × a =  F – m × g × sinθ - µ × m × g × cosθ

10 × a = 150 – (10 × 9.8 × sin 27) – (0.286 × 10 × 9.8 × cos 27)

10 × a = 150 – 44.49 – 24.97

10 × a = 80.54

Calculation of speed:

Change in kinetic energy = m × a × d

Change in kinetic energy = 10 × 8.054 × 8.05

Change in kinetic energy = 648.32 J

Explanation:

All of the objects that have been listed in the question have been ranked on the basis of the orbital period around the Sun from shortest to longest in the solar system below.

The items included are all objects that are present in the solar system other than the planets, moons, and stars. These objects, just like every other body, have an orbit in which they revolve and their revolution takes place around the Sun as well.

The order on the basis of their orbital period around the Sun from shortest to longest is as thus -

A typical asteroid in the asteroid belt, a trojan asteroid, a typical Oort cloud object, a typical Kuiper belt object

The orbital period of the items is also as thus -

A typical asteroid - 3 to 6 years

A trojan asteroid - 150 to 200 years

A typical Oort cloud object - 200 years

A typical Kulper Belt object - About 10,500 years

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Answer:

133m/s

Explanation:

b/c 250÷2.2÷0.85=133

1.) Its angular speed is 6.28 rad/s.

2.) The speed of the tip of the hand 9.42 cm every second.

The angular speed of the second hand on a watch is calculated as the ratio of the circumference of the circle the hand follows to the total time taken to complete one rotation, typically measured in radians per second. The radius of the circle the second hand moves on is 1.5 cm. So, the circumference of the circle is 2π ×1.5 cm, which gives us 9.42 cm. Thus, the angular speed of the second hand is 6.28 rad/s.

The speed of the tip of the second hand can be calculated as the product of the radius of the circle it moves on and its angular speed. Thus, the speed of the tip of the second hand is equal to 9.42 cm/6.28s or 1.51 cm/s.

To express the answer in Angular Velocity, we would say the tip of the second hand has a rotational speed of 1.51 cm/s at an angular velocity of 6.28 rad/s. This means that the tip of the second hand spins around six times each second and covers a distance of 9.42 cm every second.

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A runner achieves a velocity of 11.1 m/s 9 seconds after he begins. His acceleration is 1.23 m/s2, and he covered a distance of 49.815 m.

The runner's acceleration of 1.23 m/s2 tells us that the runner's velocity increased by 1.23 m/s every second. In other words, the runner's velocity was 0 m/s at the start, 1.23 m/s after 1 second, 2.46 m/s after 2 seconds, and so on. After 9 seconds, the runner's velocity had increased to 11.1 m/s.

The distance covered by the runner can be found using the equation d = v × t, where d is the distance, v is the velocity, and t is the time. In this case, the distance covered by the runner is d = 11.1 m/s × 9 s = 99.9 m.

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According to the information it takes approximately 15.3 seconds for the car to slow down from 52.0 m/s to 6.0 m/s.

To find the time it takes for the car to slow down, we can use the kinematic equation:

Where:

Rearranging the equation to solve for time, we have:

Substituting the given values:

According ot the information we can infer that it takes approximately 15.3 seconds for the car to slow down from 52.0 m/s to 6.0 m/s when it accelerates at a rate of -3.0 m/s².

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Answer: 1000 Hz

Explanation:

You can calculate frequency by dividing velocity by wavelength

Frequency = velocity/wavelength

Find velocity first.

900 m/3 s = 300 m/s

Plug values in to find frequency.

F = (300 m/s)/0.3 m

F = 1000 Hz

Trigonometry allows to find the result for the question about the height of the mountain is:

Trigonometry allows finding relationships between the angles of a right triangle.

         \(tan \theta = \frac{y}{x}\)  

Where θ is the angle, y the opposite leg (height) and x the adjacent leg (horizontal distance).

In the attachment we can see a diagram of the system. They indicate that for x  distance the angle is 14.67º  

         tan 14.67 = \(\frac{y}{x}\)  

At the other point the angle is 10.38º.

        tan 10.38 = \(\frac{y}{x+15860}\)

We look for the horizontal distance (x) with these equations.

        x tan 14.67 = (x + 15860) tan 10.38

        x tan 14.67 / tan 10.38 = x + 15860

        x 1,429 = x + 15860

        x 0.429 = 15860

        x = \(\frac{15680}{0.429}\)

        x = 36955.3 ft

We calculate for the height.

        y = x tan 14.67

        y = 36955.3 tan 14.67

        y = 9674.4 ft

In conclusion using trigonometry we can find the result for the height of the mountain is:

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Answer:Elas são ondas tridimensionais e transversais que viajam na velocidade da luz, transportando exclusivamente energia. Ademais, apresentam-se na forma de ondas de rádio, micro-ondas, infravermelho, luz visível, ultravioleta, raios x e raios gama, em ordem crescente de frequência e energia.

Explanation:

Answer:

0.000001 kg

Explanation:

because 1 kg equal 1,000,000 milligrams

we take   \(\frac{1}{1,000,000}\) which equals 0.000001 kg

Answer:

the first one looks like a spiral galixy

the 2nd one looks like a lenticular galixy ?? (im pretty sure but not 100%)

the 3rd one looks like a elliptical galixy

Explanation:

Answer:

1. Spiral

2. Not sure but i think its irregular.

3. Elliptical

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In equations that explain the three-dimensional motion of the atmosphere, vectors are utilised since they carry magnitude in addition to direction. The study of the atmosphere of the Planet is a focus of atmospheric science.

Physical quantities can be represented using vectors.The most common uses of vectors in physics are to describe acceleration, velocity, and displacement. Vectors are depicted as arrows and combine magnitude and direction.

A vector is necessary to "carry" something from point A to point B; the Latin root of the word vector denotes "carrier". The first to use it were astronomers in the 18th century who were researching planetary rotation around the Sun.

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Question:

Why are vectors used so frequently in atmospheric science?

a. Vectors have magnitude as well as direction and can be quickly solved

through scalar algebraic operations.

b. Vectors have magnitude but no direction, so it becomes easy to express

physical quantities involved in the atmospheric science.

c. Vectors can be solved very accurately through geometry, which helps to

make better predictions in atmospheric science.

d. Vectors have magnitude as well as direction and are used in equations that

describe the three-dimensional motion of the atmosphere.

Your question is incomplete please provide proper question.

The diagram of the eye correctly focuses a distant object onto the retina when the eye is air-filled. The image formed will be behind the retina if the eye is filled with water.

The diagram of the eye is shown below: It correctly focuses a distant object onto the retina when the eye is air-filled. If the eye is actually filled with water, the image formed will be behind the retina. This is because the refractive index of water is higher than that of air, and this causes the image to be formed further back. The diagram below shows this change when the eye is filled with water.

The diagram of the eye correctly focuses a distant object onto the retina when the eye is air-filled. The image formed will be behind the retina if the eye is filled with water.

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The diagram of sodium atom contains 2 electrons in the K shell, 8 electrons in the L shell and 1 electron in the M shell.

The name of the atom given is sodium. it has the following basic characteristics;

To draw the diagram of sodium, note the following;

Thus, the diagram of sodium atom contains 2 electrons in the K shell, 8 electrons in the L shell and 1 electron in the M shell.

The diagram of the atom is found in the image attached.

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Answer:

4km

Explanation:

Distance=speed x time

Knowing this we know the time and speed

so it is 8 x .5= D

And 8 x .5 =4

If you have any questions let me know

The force that will cause the given torque on the see-saw is 100 N.

The given parameters:

The force that will cause the given torque on the see-saw is calculated as follows;

τ = Fr

\(F = \frac{\tau}{r} \\\\F = \frac{200}{2} \\\\F = 100 \ N\)

Thus, the force that will cause the given torque on the see-saw is 100 N.

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The nuclear reaction becomes:

U₉₂²³⁸ → Th₉₀²³⁴+ α⁴₂

Thus, here (i) 234 and (ii) 90

Uranium-238 decays to thorium-234 via alpha decay. (The numbers after the chemical names indicate the number of protons and neutrons.) Uranium-238 loses two protons and two neutrons in this process, forming the isotope thorium-234.

Reactors based on thorium are safer since the reaction is simple to stop and does not need to be carried out under intense pressure. When compared to uranium reactors, thorium reactors produce significantly less waste, and the waste produced is far less radioactive and far shorter in duration.

Now, here (i) 234 and (ii) 90

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Answer:

(i) 234 and (ii) 90

Answer:

the answer would be the first choice!

Explanation:

The planet closest to the sun is Mercury. It is the smallest planet in our solar system. It orbits the sun at a distance of about 58 million km or 36 million miles. It takes Mercury only about 88 Earth days to complete its orbit around the sun. Mercury has a very thin atmosphere that is composed mainly of sodium and helium.

Due to its close proximity to the sun, Mercury's surface can become extremely hot during the day, with temperatures reaching up to 800 degrees Fahrenheit. However, at night, the temperature can drop to -290 degrees Fahrenheit. Mercury is a rocky planet with a heavily cratered surface, similar to the Earth's moon.

It has no moons or rings. Although it is the closest planet to the sun, it is not the hottest planet in our solar system. That distinction belongs to Venus, which has a thick atmosphere that traps heat and makes it the hottest planet with surface temperatures reaching up to 864 degrees Fahrenheit.

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Answer:

The magnetic field strength is H=I/2πr

Explanation:

A current I through a long, straight wire produces a magnetic field with strength H=2πr at distance of r from the wire. So the field strength is inversely proportional to the distance from the wire.

The energy consumed by the toaster is 0.05 kWh use in the morning if it is in operation for a total of 5.7 min.

Power is given in watts and time in minutes, and we must find energy in kilowatt-hours (kWh).So, the given data is: Power, P = 500 W, Time, t = 5.7 min

We have to find the energy consumed in the given time by the toaster.

Energy consumed by a device is given by the relation: E = P × t Where, E = Energy

P = Power of device (in watts)t = Time for which device operates (in hours)

Now, we can substitute the given values in the above formula:

E = 500 W × 5.7/60 h= 47 Wh (Watt-hours)

To convert it into kWh (kilowatt-hours), we can divide the energy in Wh by 1000 kWh/kWh. Thus, we have

E = 47 Wh/1000 kWh/kWh

= 0.047 kWh or 0.05 kWh (rounding to two significant figures).

Therefore, the conclusion is that the energy consumed by the toaster is 0.05 kWh.

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The total vapor pressure of the solution is (c) 99.3 mmHg.

A substance's or an object's temperature is a measurement of how hot or cold it is. It is a characteristic of matter that has to do with the typical kinetic energy of the atoms or molecules that make up the thing or material. Normally, temperatures are expressed in either degrees Celsius (°C) or degrees Fahrenheit (°F).

Raoult's law, because substance A's mole fraction is 0.35, it follows that substance B's mole fraction must be 0.65. (since the two mole fractions must add up to 1). The partial pressures of A and B in the solution can be determined using Raoult's law:

A's partial pressure is calculated as 0.35 x 87 mmHg, or 30.45 mmHg.

B's partial pressure is equal to 79.3 mmHg (0.65 x 122 mmHg).

The partial pressures of A and B are added to determine the solution's overall vapor pressure:

Total vapor pressure equals partial pressures of A and B, or 30.45 mmHg, 79.3 mmHg, and 109.75 mmHg respectively.

Rounding to the nearest tenth, we obtain 109.8 mmHg, which is the value that is most similar to option (c) 99.3 mmHg. Hence, the correct response is (c) 99.3 mmHg.

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The velocity of the load right after the brake of the lorry is suddenly applied at t = 6 s, is 16.9 m/s.

The velocity of the load is determined from the ratio of the load displacement and time taken.

Mathematically, the formula for displacement is given as;

Displacement = change in displacement / change in time

The displacement of the load at 6 seconds is calculated as;

D = area under the curve

D = (15 s - 6 s ) x (20 m/s - 0 m/s)  +  ¹/₂ (19 s - 15 s ) x (20 m/s - 0 m/s)

D = 180 m  + 40 m

D = 220 m

The velocity of the load;

v = ( 220 m ) / (19 s - 6 s )

v = 16.9 m/s

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The work required to stop the car is 23,756 J

The work required to stop a car is equal to the amount of energy that the car has due to its motion. This energy is called the kinetic energy of the car. The kinetic energy of a car is calculated as the product of the mass of the car and the square of its velocity.

kinetic energy = 1/2 * mass * velocity²

The mass of the car is 1,168 kg and the velocity of the car is 24 km/hr. We will first need to convert the velocity from km/hr to m/s. To do this, we will multiply the velocity by 5/18. So, the velocity of the car is 24 * 5/18 = 6.667 m/s.

We can now calculate the kinetic energy of the car as follows:

kinetic energy = 1/2 * 1,168 * 6.667² = 23,756 J

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Power require in Watts is 50 watts

Given:

Force = 30 N

Distance = 100m

Time for which force applied = 1 min = 60 sec

To Find:

Power

Solution: A watt is a unit of power. It is the amount of energy an item needs to function; the rate at which energy is consumed. One watt is equivalent to electricity flowing at a rate of one joule (unit of energy) per second

P = W/t

where W is work done by force and t is the time for which force is applied

W = F x d

W = 30 x 100 = 3000

P = 3000/60 = 50 watts

So Power require in Watts is 50 watts

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The displacement of train moves is s = 147.68m.

To calculate the displacement train moves using the formula of equation of motion,

s = 1/2 ( u + v ) t

Where,

s is displacement

u is initial velocity

v is final velocity

t is time

Given data :

u = 4.82 m/s

v = 7.09 m/s

t = 24.8 s

s = ?

Now, putting the values in equation we get,

s = 1/2 (  4.82 m/s + 7.09 m/s ) 24.8 s

s  = 1/2 x 11.91 m/s x 24.8 s

s = 147.68 m

Hence, the displacement of train moves is s = 147.68m.

The fundamental equation of motion in classical mechanics is Newton's second law, which declares that the force F acting on a body is equal to that body's mass m times its center of mass's acceleration a, or F = ma.

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Saudi Arabia and Russia, acting as leaders of the OPEC plus energy cartel, announced the cut in production this week in a bid to increase oil prices.

This is referred to as the process in which goods and services are made or produced from raw materials into finished products and examples include cement, furniture etc.

The leaders of the OPEC plus energy cartel, announced that there will be a cut in production this week so as to raise the prices. This is because when goods become scarce the the price will increase due to very limited numbers being available.

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Population specification errors occur when the researcher does not understand who they should survey. This can be tricky because there are multiple people who might consume the product, but only one who purchases it, or they may miss a segment looking to purchase in the future.

Population specification errors occur when the researcher does not understand who they should survey. This can be tricky because there are multiple people who might consume the product, but only one who purchases it, or they may miss a segment looking to purchase in the future.

Population specification errors occur when the researcher does not understand who they should survey. This can be tricky because there are multiple people who might consume the product, but only one who purchases it, or they may miss a segment looking to purchase in the future.

Population specification errors occur when the researcher does not understand who they should survey. This can be tricky because there are multiple people who might consume the product, but only one who purchases it, or they may miss a segment looking to purchase in the future.

Measurement error is generated by the measurement process itself, and represents the difference between the information generated and the information wanted by the researcher. Generally, there is always some small level of measurement error due to uncontrollable factors.

Changing the length of a string may alter the force in a physical system, like a pulley mechanism, if it impacts its tension and length.

Nonetheless, regarding a digital system such as a software application, replacing the string with another one that does not affect any crucial factors is improbable to cause an alteration in said force amount.

Determining whether changing a component of a method leads to any modifications in strength requires recognizing essential aspects influencing that force while keeping in mind how this modification might hinder these key elements.

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