steam enters the engine at 600c(873k) and exits at 75c(348k). what is its efficiency?

The ground speed is approximately 67.32 km/h and the track is approximately 158.24°.

To determine the ground speed and track, we need to consider the effect of the wind on the aircraft's motion.

The air speed of the aircraft is 100 km/h, which means that it moves through the air at this speed relative to the surrounding air mass. The course of the aircraft is the direction in which it is intended to fly, given as a bearing of 120°.

The wind is blowing from a bearing of 080° with a speed of 50 km/h. To find the effect of the wind on the aircraft, we need to decompose the wind vector into its components relative to the course of the aircraft.

Using basic trigonometry, we can find that the component of the wind perpendicular to the course is 50 km/h * sin(120° - 80°) = 50 km/h * sin(40°) ≈ 32.68 km/h. This component affects the aircraft's ground speed.

The component of the wind parallel to the course is 50 km/h * cos(120° - 80°) = 50 km/h * cos(40°) ≈ 38.24 km/h. This component affects the aircraft's track.

To calculate the ground speed, we subtract the perpendicular component of the wind from the air speed: 100 km/h - 32.68 km/h ≈ 67.32 km/h.

To calculate the track, we add the parallel component of the wind to the course: 120° + 38.24 km/h ≈ 158.24°.

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When you flick a card from beneath a coin, you are illustrating the principles of inertia, friction, support force and equilibrium.

Inertia is the property of an object that resists changes to its state of motion. When you flick a card from beneath a coin, the card will move quickly, while the coin will barely move at all. This is because the coin has a greater mass, meaning it has a greater resistance to changes in its motion. The coin's tendency to remain at rest unless acted upon by an external force is an example of inertia.

Friction is another force that affects the motion of objects, and it acts to slow down or stop the motion of an object by opposing the direction of motion. Support force refers to the force exerted by a surface that supports an object, such as the table or floor that the coin and card are resting on. Equilibrium is the state of a system in which the forces acting on an object are balanced, so that the object remains at rest or moves at a constant velocity.

Support force is the force exerted by the coin on the card. Finally, equilibrium is the state in which all the forces acting on an object are balanced.

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Answer:

About 22 hours in flight time.

Explanation:

It wouldn't give me the walking time.

Hope I helped ya.

< Sarah >

Answer:

Hmm idk u was tryna take the trip or sum

Explanation:

The balanced equation for the reaction of a red spheres and blue spheres is a + b --> 2ab.

The given question, "letting a = red spheres and b = blue spheres, write a balanced equation for the reaction," requires us to write a balanced equation for the given reaction.

Let's say that we have a and b spheres, and we are mixing them. We have to write a balanced equation for this reaction.

Therefore, the balanced equation for the reaction is given as follows:

a(red spheres) + b(blue spheres) -> c(products)The number of red spheres and blue spheres should be equal on both sides of the equation; otherwise, the equation will not be balanced.

In other words, the coefficient of a and b should be equal to the coefficient of c.

This will ensure that the law of conservation of mass is being followed.

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Complete Question:

Letting a = red spheres and b = blue spheres, write a balanced equation for the reaction.

a) 2A+B↔\(A_2B\)

b) 8A+4B↔4\(A_2B\)

c) \(A_2\) +B↔\(A_2B\)

d) 5\(A_2\) +5B↔4\(A_2B\)+\(A_2\) +B

Almost all of the kinetic energy of the incident electrons is converted to-d. a bremsstrahlung photon.

When incident electrons interact with matter, such as a target material, almost all of their kinetic energy is converted into a bremsstrahlung photon. Bremsstrahlung, which means "braking radiation" in German, is produced when electrons are deflected or decelerated by the electric field of atomic nuclei in the target material. The abrupt change in direction or speed of the electrons leads to the emission of photons, which can have a wide range of energies. These bremsstrahlung photons can span a broad spectrum, including X-rays, and carry away the kinetic energy of the incident electrons. The conversion of kinetic energy into bremsstrahlung photons is a fundamental process in X-ray production and is utilized in various applications, such as X-ray imaging and radiation therapy.

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Answer: Microscope is an instrument that is used for observing micro particles, cells, and nanosized particles.

Explanation:

Placing one hand below the stage of the microscope and other hand must be used to hold the arm of the microscope. This facilitates the safety of the microscope as it will provide support to the entire structure of the microscope and also to the lens and mirrors attached to the structure of the microscope. If any of the part get damaged or lost during carrying it will affect the overall functioning of the microscope.

Answer:

wrapping the electrical cord around the arm of the microscope

Explanation:

just took the test

An electromagnetic wave with a wavelength about the same as the diameter of an apple would be infrared radiation.

What is a wave?

The term "wave" refers to a disturbance or oscillation that travels through a medium or space, carrying energy from one place to another. In the case of an electromagnetic wave, this oscillation is created by the interaction of electric and magnetic fields, and the wave carries energy in the form of photons. The wavelength of an electromagnetic wave is the distance between two consecutive peaks or troughs of the oscillation. Shorter wavelengths correspond to higher energy photons, while longer wavelengths correspond to lower energy photons.

Wave with a wavelength the same as the diameter of an apple:

In the case of an electromagnetic wave with a wavelength about the same as the diameter of an apple, the most likely option would be infrared radiation. This is because infrared radiation has wavelengths ranging from about 700 nanometers to 1 millimeter, which overlaps with the size of an apple (which is around 8-10 centimeters in diameter). Infrared radiation has lower energy than x-rays or UV radiation, but higher energy than microwave or radio waves.

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The equilibrium distance of A on the beam HP is 7 meters because of the increased weight which is a force at point H.

An equilibrium is utter to be stable if small, externally induced displacements from that state manufacture forces that tend to oppose the movement and return the body or particle to the equilibrium state. There are three types of equilibrium: stable, unstable, and neutral.

systematic for Equilibrium with Three Forces only. select zero degrees to be the +x-axis, and 90° to be the +y-axis. When this force system is acting on a body, equilibrium is possible only if an opposite balancing force is applied by the body (or its supports).

So we can conclude that the Equilibrium of a body is a state in which all the forces acting on the body are steady, and the net force acting on the body is zero.

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Answer:

around 23 miles per hour

The difference between the measure of weight of a piece of lead in air and water is due to the buoyancy force of water. Difference between the two readings on the scale is 50.

Volume of lead is ratio of the weight it to the density of the lead. Thus,

= V = W/ρ

The value of the density for the lead material is 11.3 g/cm cubed.

The volume of the lead = 50 cm³

The experiment was performed two times, once in the air and once in water. As the density of the lead is 11.3 gram per cm cubed, the weight of the lead is =

= W = V X ρ

= W = 11.3 X 50

= W = 565 g

Hence, the total weight of the piece of lead is 565 grams.

If the air force is negligible then the weight of the piece of lead is 565 grams when the experiment is done in the air with spring scale.

The density of the water is 1 gram per cubic centimetre of water and the buoyancy force applied by the water on the piece of lead with 50 cm³ volume is 50 g.

Thus, the weight of the piece of lead when the experiment is done in the water with spring scale is=

= W' = 565-50

= W' = 515 g

Thus, the weight of the piece of lead when the experiment is done in the water with spring scale is, 515 grams.

Difference between the two readings on the scale =

= 565 -515

= 50g

Hence, the difference between the two readings on the scale is 50g.

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Answer: it is located over Ellesmere Island, Canada

Explanation

it is now drifting away from North America and toward Siberia.

Answer:ellesmere island, Canada

A unit train of coal consists of 110 carloads, with each carload carrying 100 tons of coal. The trainload of coal contains approximately 2.64 x 10¹⁴ J of energy and the power plant requires approximately 0.234 trainloads of coal per day to run at full capacity.

Part A:

The total weight of the coal in the train is:

110 carloads x 100 tons per carload = 11,000 tons

Since 25% of the weight of the coal is water, the weight of the coal itself is:

11,000 tons x (1 - 0.25) = 8,250 tons

The total energy contained in the coal is:

8,250 tons x 3.2 x 10¹⁰ J/ton = 2.64 x 10¹⁴ J

Therefore, the trainload of coal contains approximately 2.64 x 10¹⁴ J of energy.

Part B:

The power plant can produce electricity at a rate of:

978 MW = 978 x 10⁶ W

However, coal power plants are only 38% efficient in converting energy in coal to electricity. Therefore, the actual amount of energy produced by the power plant from a given amount of coal is:

0.38 x 3.2 x 10¹⁰ J/ton = 1.216 x 10¹⁰ J/ton

To produce 978 MW of electricity, the power plant needs:

978 x 10⁶ W / 1.216 x 10¹⁰ J/ton = 80.4 tons of coal per hour

Since each trainload carries 8,250 tons of coal, the power plant needs:

80.4 tons/hour x 24 hours/day / 8,250 tons per trainload = 0.234 trainloads per day

Therefore, the power plant needs approximately 0.234 trainloads of coal per day to keep running at full capacity.

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There are 9 square feet in a yard.

A yard is a unit of measurement in the Imperial system that is used to measure length or distance. It is equal to three feet or 36 inches. However, when it comes to measuring an area, we have to multiply the length and width to get the area in square feet.

Therefore, a square yard has an area of 9 square feet. This conversion is commonly used in measuring the size of a lawn or garden. Knowing how many square feet are in a yard is essential for homeowners who want to buy sod, fertilizer, or other lawn care products.

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A furnace with a rated value of 96,000 - 128,000 BTU per hour would be needed to heat a 3,200 ft2 passive solar home in Austin, Texas, using the rule of thumb method.

The rule of thumb method for sizing a furnace is to estimate the required heating capacity based on the square footage of the home. A common guideline is to have a furnace with a heating capacity of 30-40 BTU per square foot.

For a 3,200 ft2 passive solar home in Austin, Texas, we can estimate the required heating capacity as follows:

Heating capacity = (30-40) BTU per square foot x 3,200 square feet

Heating capacity = 96,000 - 128,000 BTU per hour

Therefore, a furnace with a rated value of 96,000 - 128,000 BTU per hour would be needed to heat a 3,200 ft2 passive solar home in Austin, Texas, using the rule of thumb method.

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The equivalent resistance of the circuit is 2.67 ohms.

The current following in the circuit is 4.5 A.

The power dissipated in the circuit is 51.4 W.

The equivalent resistance of the circuit is calculate  as follows;

1/Re = 1/4 + 1/8

1/Re = 3/8

Re = 8/3

Re = 2.67 ohms

The current following in the circuit is calculated as;

I = V/Re

I = 12 / 2.67

I = 4.5 A

The power dissipated in the circuit is calculated as;

P = I²R

P = 4.5² x 2.67

P = 54.1 W

The voltage drop in each resistor is calculated as;

V1 = 4.5 x 2.67

V1 = 12.01 V

V2 = 8 x 2.67

V2 = 21.36 V

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Answer:

amount and speed of traffic on the acceleration lane and expressway.

They try not to influence the subjects

Explanation:

Answer:

Everything is made up of tiny particles called Matter

Answer:

60 km/h

Explanation:

Simplify the speed:

120÷2=60

Hence, the average speed is 60 km/h.

The mechanical advantage of the screwdriver is 0.208.

Mechanical advantage is the ratio of the output force produced by a machine (especially a simple machine) to the applied input force.

The efficiency of a simple machine is determined by calculating their mechanical advantage (MA). Mechanical advantage is a measure of the force amplification attained by the machine.

According to this question, the screwdriver has a radius from the center to the outermost edge of the tip of 50.0 mm, and the radius of the handle of 240 mm. The mechanical advantage can be calculated as follows:

M.A = 50/240

M.A = 0.208

Therefore, 0.208 is the mechanical advantage of the simple machine.

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When a diesel cycle and Otto cycle work at the same compression ratio, the ideal cycle with the lowest thermal efficiency is  Otto cycle because the area shown in the P-V  graph for the same ratio is more than diesel cycle.

In an engine cylinder the ratio of maximum and minimum volume of the combustion chamber and cylinder is termed as compression ratio.

Hence, When a diesel cycle and Otto cycle work at the same compression ratio, the ideal cycle with the lowest thermal efficiency is  Otto cycle because the area shown in the P-V  graph for the same ratio is more than diesel cycle.

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Answer:

466J

Explanation:

Given parameters:

Mass of steel  = 1kg  = 1000g

Initial temperature  = 21°C

Final temperature  = 22°C

Unknown:

Amount of heat required for this temperature increase  = ?

Solution:

To solve this problem, we use the expression below:

  So;

Heat absorbed  = mass x specific heat of steel x change in temperature

Specific heat of steel  = 0.466J/g°C  

Therefore;

 Heat absorbed  = 1000 x 0.466 x (22  - 21)  = 466J

Therefore, the time required for an object t roll down an inclination plane will shorten as the weight (body) of the object increases.

A measurement of how much matter is present in or makes up a physical body. In physical laws, an object's mass is crucial to Newton's laws because it influences the force needed to accelerate it and, consequently, how much inertia it has.

Digital scientific weights and beams balances, like a triple beam balance, are examples of several sorts of balances. The metric system uses both grams or kilograms as the basic unit of measurement for mass.

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Answer:

Im pretty sure its kingdom

Explanation:

I have a test with the same question and I got it right putting the answer as kingdom.

A fresh planet is found to be revolving around a solitary star. The world has a single moon. The star is located at one of the elliptical orbit's foci.

The "giant impact theory" is the accepted explanation for how the moon arose. According to this theory, the moon was created when the earth and another huge object crashed. Along with scientific motivations, political motivations also led to the start of the Moon exploration program. According to this theory, the Moon was created after the Earth collided with a smaller planet that was around Mars' size. The Moon was created when the impact's leftover debris gathered in an orbit around Earth.

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Answer:

E) 147 V

Explanation:

Ra+Rb+Rc = 14.0

V = IR

V = (10.5)(14.0)

V = 147 V

The potential difference across the source will be c)12V

Ohm's law states that  the current through a conductor between two points is directly proportional to the voltage across the two points .

since , R(A) , R(B) AND R(C) are in parallel combination , hence  equivalent

resistance of the circuit will be

1/R = 1/R(A) + 1/ R(B) + 1/ R(C)

1/R= 1/2 + 1/4 +1/8

1/R = 7/8

R = 8/7 ohm

from ohm's law

Voltage = current * resistance

V( source ) = current (in circuit ) * R (equivalent resistance)

V = 10.5 * (8/7)

V = 12 V

The potential difference across the source will be c) 12V

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The final velocity of the composite object is 12.20 m/s.

Given,Mass of the first object, m1 = 3 kg, Initial velocity of the first object, u1 = 5 i m/s, Mass of the second object, m2 = 2 kgInitial velocity of the second object, u2 = 23 j m/s. After the collision, both the objects stick to each other and move with a common velocity, v. Let's apply the law of conservation of momentum before and after the collision. Before collision:

m1u1 + m2u2 = 3 × 5 + 2 × 0

= 15 kg m/s + 0

= 15 kg m/s

After collision, the two objects stick together and move with a common velocity, v. Hence, using the principle of conservation of momentum:

m1u1 + m2u2 = (m1 + m2)v

⇒ 3 × 5 + 2 × 23

= (3 + 2)v

⇒ 15 + 46

= 5v

⇒ v = 61/5 m/s

So, the final velocity of the composite object is 12.2 m/s along a direction making an angle with the x-axis given by

tanθ = v_y/v_x

⇒ θ = tan⁻¹(v_y/v_x)

In this problem, we have an object of mass 3.00 kg, moving with an initial velocity of 5.00 i ^ m/s and a second object of mass 2.00 kg with an initial velocity of 23.00 j ^ m/s. The two objects collide and stick to each other. We are asked to find the final velocity of the composite object. To solve the problem, we need to apply the law of conservation of momentum. Before the collision, the total momentum is:

m1u1 + m2u2 = 3.00 × 5.00 + 2.00 × 0

= 15.00 kg m/s

After the collision, the two objects stick together and move with a common velocity v.

Hence, using the principle of conservation of momentum:

m1u1 + m2u2

= (m1 + m2)v

⇒ 3.00 × 5.00 + 2.00 × 23.00

= (3.00 + 2.00)v

⇒ 15.00 + 46.00

= 5.00vv

= (15.00 + 46.00)/5.00

= 12.20 m/s

The final velocity of the composite object is 12.20 m/s.

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Maria Mitchell was an American astronomer who lived from 1818 to 1889. She was born on August 1, 1818, in Nantucket, Massachusetts, and passed away on June 28, 1889, in Lynn, Massachusetts. One interesting science-related aspect of Maria Mitchell's life is that she discovered a comet in 1847, known as "Miss Mitchell's Comet." She made this remarkable discovery using a telescope, becoming the first American woman to do so.

Apart from her contributions to astronomy, Maria Mitchell was also an advocate for women's rights and education. She was actively involved in promoting equal educational opportunities for women, serving as the first female professor at Vassar College in Poughkeepsie, New York. Her appointment at Vassar College marked a significant milestone in women's education, as it was the first women's college in the United States to offer astronomy as a course.

Maria Mitchell's most significant scientific contribution was her pioneering work in the field of celestial navigation. She meticulously observed and recorded the positions of celestial objects, such as stars and comets, and used her data to create accurate charts for navigators. Her work greatly improved the accuracy of celestial navigation, enabling safer and more efficient maritime travel. In recognition of her accomplishments, Maria Mitchell received numerous honors and accolades during her lifetime. She became the first woman elected to the American Academy of Arts and Sciences in 1848, and she was also elected as the first female member of the American Association for the Advancement of Science in 1850.Overall, Maria Mitchell's groundbreaking discoveries, her advocacy for women's education, and her advancements in celestial navigation solidified her as a prominent figure in the field of astronomy and a trailblazer for women in science.

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