hdc problem 2.18. determine the true anomaly f of the point(s) on an elliptical orbit at which the speed equals the speed of a circular orbit with the same radius (i.e., vellipse = vcircle).

The theoretical efficiency is greater than that of the actual efficiency of the engine. This is because heat engine always produces some waste heat.

The Second Law of Thermodynamics states that a heat engine cannot be 100% efficient. In practice, a heat engine is only 100% efficient when it is operating at about 30-50% efficiency.

If we were to multiply this by 100, we would get the efficiency as a percent: 49%. This is the theoretical maximum efficiency. If we were to actually build an engine, it would be less efficient than the theoretical engine. The theoretical engine that can achieve this theoretical maximum efficiency is called the Carnot Engine.

To learn more about the heat engine, refer to the link:

https://brainly.com/question/13155544

#SPJ4

Answer:

15%

Explanation:

Step one:

Given data

Energy source= 300J

Useful energy = 45J

Waste energy = 255J

Required

The efficiency of the solar system

Step two:

The efficiency is computed by factoring only the useful work and the energy source

Efficiency= 45/300*100

Efficiency= 0.15*100

Efficiency= 15%

Answer:

An atom is the part of an element. A particular element is composed of only one type of atom. Atoms are further composed of subatomic particles called electrons, protons and neutrons. Elements can combine with each other to form molecules via chemical reaction.

Answer:

all of the above

Explanation:

because I know

Answer: all of the above

Explanation:

Each answer - choice has a reasonable relevance when using a website.

The acceleration of the car with initial and final speeds is 8.3×10⁻² m/s². and the odometer shows the distance traveled by the car and the speedometer shows the instantaneous velocity.

Acceleration is defined as the change in velocity per unit time. If the velocity increases, it gives acceleration and if the velocity decreases, it represents deceleration. The SI unit of acceleration m/s².

Acceleration (a) = change in velocity/time

the initial speed of the car (u) = 36km/hr = 36×5/18 = 10 m/s  (km/hr is converted to m/min by multiplying 5/18).

the final speed of the car (v) = 54 km/hr = 54 ×5/18 = 15 m/s

time taken of the car = 1 minute = 60 seconds

Acceleration = v-u / t

                      = 15-10/60

                     = 5/60

                     = 0.083 m/s²

                     = 8.3×10⁻² m/s².

The acceleration of the car = 8.3×10⁻² m/s².

The odometer measures the distance traveled by car.

To know more about acceleration :

https://brainly.com/question/28743430

#SPJ1

The question is  incomplete but most probably your full question was,

The odometer of a car reads 36km/hr. A minute later it reads 54km/hr. What acceleration does the car undergo? Express it in the SI unit. What kind of speeds does the odometer show?

Answer:

B.

Goals are scored by kicking the ball through goalposts.

Explanation:

Answer:

Amount of mold

Explanation:

the dependent variable depends on the independent variable. the amount of mold changes if the bread is opened or not. the independent variable is what can change.

The proper time interval between the two events is 0.435 s. Hence, the correct option is (b) 0.435 s.

Given that an observer flying over the stadium at a speed of 0.75c, measures 0.658 s as the time between the two events (hitting and catching the ball).

To find the proper time interval between the two events.

The time interval measured by the observer is called the "dilated" time interval (t').

The proper time interval (Δt) is found using the formula,

Δt = t' / γ

where

γ = 1 / √[1 - (v/c)²] is the Lorentz factor, v is the velocity of the observer, and c is the speed of light.

Given:

v = 0.75c, t' = 0.658 s, and

c = speed of light = 3 × 10⁸ m/s

Thus,

γ = 1 / √[1 - (v/c)²]

= 1 / √[1 - (0.75)²]

= 1 / √(0.4375)

= 1 / 0.6614

= 1.5126

Therefore, Δt = t' / γ

= 0.658 / 1.5126

≈ 0.435 s

Therefore, the proper time interval between the two events is 0.435 s. Hence, the correct option is (b) 0.435 s.

To know more about time interval visit:

https://brainly.com/question/28238258

#SPJ11

Answer:

B can be answered using physics

Two types of errors that can occur when measuring the length of an object are systematic errors and random errors. Systematic errors can be minimized by calibrating measuring instruments and ensuring proper alignment. Random errors can be reduced by taking multiple measurements and calculating the average value.

There are two types of errors that can occur when measuring the length of an object: systematic errors and random errors.
1. Systematic errors: These errors occur consistently and affect all measurements in the same way. They are usually caused by equipment calibration issues or incorrect measurement techniques. Systematic errors can be minimized by:
- Calibrating the measuring instrument regularly to ensure accurate readings.
- Using the appropriate measuring technique, such as aligning the object properly with the measuring device.
- Taking multiple measurements and averaging the results to reduce the impact of any systematic error.
2. Random errors: These errors are unpredictable and can occur due to various factors, such as human error or environmental conditions. Random errors can be minimized by:
- Taking multiple measurements and calculating the average, which helps to reduce the effect of random errors.
- Using a measuring instrument with high precision, as it reduces the likelihood of random errors.
- Ensuring consistent environmental conditions during measurements, such as stable temperature and lighting.
It's important to note that no measurement can be completely free from error.

However, by minimizing systematic and random errors, we can increase the accuracy and reliability of our measurements. Regular calibration, proper technique, and multiple measurements are key strategies to minimize errors when measuring the length of an object.

for more questions on calibrating measuring instruments

https://brainly.com/question/25034625

#SPJ8

The intersection of the three lines in the triangle is the point where the three lines intersect. This point is the centroid or center of gravity of the triangle.

The centroid is the point of balance of the triangle where all three medians meet. A median is a line segment that connects a vertex of a triangle to the midpoint of the opposite side.

The medians of a triangle divide it into six smaller triangles of equal area. The centroid is the point where these six smaller triangles balance out each other's weight.

Therefore, Since the medians divide each other in a 2:1 ratio, the centroid is located 2/3 of the distance from each vertex along the median. Hence, the intersection of the three lines at this point gives us the center of gravity of the triangle.

Learn more about Centre of gravity from

https://brainly.com/question/874205

#SPJ1

The water pressure in the upper pipe is approximately 117.72 Pa if the height difference between the lower and upper pipe is 12 m and the area of the upper pipe is 10 cm2.

The pressure of water in the upper pipe can be calculated using the following formula:

P = ρgh

where P is the pressure, ρ is the density of water (1000 kg/m³), g is the acceleration due to gravity (9.81 m/s²), and h is the height difference between the lower and upper pipe (12 m).

However, the area of the upper pipe is given in square centimeters (cm²), so we need to convert it to square meters (m²) before we can use the formula.

1 cm² = 0.0001 m²

Therefore, the area of the upper pipe is:

10 cm² * 0.0001 m²/cm² = 0.001 m²

Now we can plug in the known values into the formula to get:

P = ρgh = 1000 kg/m³ * 9.81 m/s² * 12 m * 0.001 m²

Simplifying, we get:

P = 117.72 Pa

learn more about pressure here:

https://brainly.com/question/22613963

#SPJ11

Answer:

yes

true

Explanation:

because earth is rotation

For a full cycle, four-stroke engines revolve twice. This indicates that 720 crank degrees are required to complete a cycle.

The four basic engine strokes—INTAKE, COMPRESSION, POWER, and EXHAUST—are presumably already familiar to you. Each stroke corresponds to 180 crank degrees, or half a crankshaft revolution. Two crankshaft revolutions, or 720°, are equal to 4 cycles times 180°.

Engines with a four-stroke cycle. An internal combustion engine with a four-stroke cycle uses the four distinct piston strokes of intake, compression, power, and exhaust to complete one operational cycle.

To know more about 4 stroke engines visit:

https://brainly.com/question/14378516

#SPJ4

Answer:

60 - 45 = A. 15

Explanation:

Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.

A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.

The image that follows illustrates how an object appears when viewed via a plane mirror.

Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

To learn more about Plane mirror, refer to the link:

https://brainly.com/question/13101215

#SPJ2

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

m is the mass

f is the force

From the question we have

\(a = \frac{70}{7} = 10 \\ \)

We have the final answer as

Hope this helps you

Answer:

she can answer : which part of the magnet is said strongest at attracting iron & how fast does iron lose its magnetism?

a. The electrostatic potential difference between point A and B, ΔVAB, can be calculated using a path integral, and ΔVAB does not depend on the integral path used.

b. A common reference point for electrostatic potential is V=0 at infinity.

c. The magnitude of work required to bring a charge q from point A to point B is ∣qVBA∣.

d. eV is a unit for potential.

e. When a charged particle is accelerated in vacuum from rest by an electric field, the amount of kinetic energy increased equals the amount of potential energy decreased, i.e., |(1/2)mv^2| = |qΔV|.

a. The electrostatic potential difference ΔVAB between point A and B can be calculated using a path integral, and it does not depend on the integral path used.

This is a fundamental property of conservative electric fields, which implies that the work done in moving a charge between two points is independent of the path taken.

b. A common reference point for electrostatic potential is V=0 at infinity. This is chosen as a reference to define the potential at other points.

c. The magnitude of work required to bring a charge q from point A to point B is given by ∣qVBA∣, where VBA is the potential difference between point B and A.

d. eV is a unit for potential, commonly used in atomic and particle physics, where e represents the elementary charge.

e. When a charged particle is accelerated in vacuum from rest by an electric field, the amount of kinetic energy gained by the particle equals the amount of potential energy decreased.

This is derived from the conservation of mechanical energy, where the work done by the electric field is equal to the change in potential energy, which is then converted into kinetic energy.

To know more about "Electrostatic potential" refer here:

https://brainly.com/question/31148592#

#SPJ11

The VRIO analysis will provide valuable insights into the internal factors that contribute to Mercedes Benz's competitive position in the automotive industry.

VRIO Analysis

In addition to the Strategy Diamond, the group will also conduct a VRIO analysis as part of their collective analysis of Mercedes Benz.

VRIO stands for Value, Rarity, Imitability, and Organization, and it is a framework used to evaluate the resources and capabilities of a company.

The VRIO analysis helps assess the competitive advantage of a company by examining whether its resources and capabilities are valuable, rare, difficult to imitate, and well-organized.

This analysis allows the group to identify the company's key strengths and weaknesses and understand how they contribute to its overall strategy.

By applying the VRIO framework to Mercedes Benz, the group can determine which aspects of the company's operations and resources provide a sustainable competitive advantage.

They will evaluate the value of Mercedes Benz's brand reputation, technological innovation, manufacturing capabilities, and distribution network.

They will also assess the rarity of these resources and capabilities and analyze whether competitors can easily imitate or replicate them. Lastly, the group will examine how well Mercedes Benz's organization and management effectively leverage these resources to create value for the company.

The VRIO analysis will provide valuable insights into the internal factors that contribute to Mercedes Benz's competitive position in the automotive industry.

It will help the group understand the unique aspects of the company's operations and guide their analysis of the broader strategic context outlined in the Strategy Diamond.

To know more about Mercedes refer here:

https://brainly.com/question/978174#

#SPJ11

When birds sit on a single power line, they are not grounded, which means they do not provide a path for current to flow from the high voltage power line through their body to the ground. But if they were to place one foot on each of two lines, they would complete a circuit, and current would flow through their body, and they would receive a terrible shock.

Electricity flows through a circuit when there is a path for current to flow from a power source to the ground. The power lines carry high voltage electricity, which can be dangerous to living organisms, including birds. However, birds sitting on a single power line don't get shocked because they are not providing a path for current to flow from the power line through their body to the ground.The reason birds are not grounded when they sit on a single power line is that they have only one point of contact with the power line.

Therefore, the current cannot flow through their body and reach the ground. In other words, they are not part of the circuit.In conclusion, birds sitting on a single power line do not get shocked because they are not grounded and do not provide a path for current to flow through their body to the ground. However, if they were to place one foot on each of two lines, they would complete a circuit, and current would flow through their body, resulting in a terrible shock.

To know more about shocked visit :

https://brainly.com/question/26847052

#SPJ11

To solve this we must be knowing each and every concept related to variables. Therefore, because the evidence cards all represent variables, none of them should be deleted.

A variable is any trait, characteristic, number, or quantity that changes over time or may take on different values in different contexts (as contrast to constants, such as n, which do not change).

Magnetic pole configuration is a variable since its values can vary.

The quantity of coils is indeed a variable since it might have several numbers.

Rail material is indeed a variable since its values might vary.

The distance between the automobile and the launcher is flexible since it might take various values.

Therefore, because the evidence cards all represent variables, none of them should be deleted.

To learn more about variables, here:

https://brainly.com/question/28900893

#SPJ1

Let x be the amount of Kool-Aid in Lake Alpha t hours after the crash. We can use the law of conservation of mass to determine the incremental change in the amount of Kool-Aid in Lake Alpha over time.

At any given time t, the amount of Kool-Aid in Lake Alpha is x kilograms. The Kool-Aid in Lake Alpha is flowing into Lake Beta at a rate of 400 liters per hour, so the concentration of Kool-Aid in Lake Alpha is decreasing by 400x / (500,000 liters) = 0.0008x kilograms per hour. At the same time, Lake Beta is flowing into Lake Alpha at a rate of 400 liters per hour, so the concentration of Kool-Aid in Lake Alpha is increasing by 0.0008y kilograms per hour, where y is the amount of Kool-Aid in Lake Beta at time t. Therefore, the incremental change in the amount of Kool-Aid in Lake Alpha over a small time period Δt can be approximated by: Δx ≈ (-0.0008x + 0.0008y) Δt. Note that this is an approximation since the concentration of Kool-Aid in Lake Beta also changes over time, but it should be accurate enough for small time periods.

To learn more about Kool-Aid click the link below

brainly.com/question/13813435

#SPJ4

The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

Learn more about period here: https://brainly.com/question/29813582

#SPJ1

Answer:

They will never meet.

Explanation:

Given that three sharks are located at the vertices of an equilateral triangle whose side equals LL. They all start moving simultaneously with a constant speed vv, with the first shark heading constantly toward the second, the second toward the third, and the third toward the first. How soon will the sharks converge at one point ?

Since the three sharks are located at the vertices of an equilateral triangle whose side equals, and the first shark is moving toward the second, the second is moving toward the third, and the third shark is moving toward the first, the movement of the three shark will form a circular motion.

Since the three sharks are moving at a constant speed, the three sharks will never meet because the distances between them are also the same.

The three sharks will therefore continue to move till infinity.

Answer:

pectoral muscles

Explanation:

Answer:

Negative 3

Explanation:

Bc scientific notation is the zeros either ahead or behind the actual numbers

Answer:

-3

Explanation:

Slow cooling of magma beneath the surface of Earth

Rocks with light and dark color and coarse texture can form in a variety of ways, depending on the specific type of rock. However, one common way that this type of rock can form is through a process called igneous rock formation.

Igneous rocks are formed when molten rock (magma) cools and solidifies. The type of igneous rock that forms depends on the composition of the magma and the rate at which it cools. When magma cools slowly beneath the Earth's surface, it can crystallize and form large, coarse-grained igneous rocks called plutonic or intrusive rocks.

Learn more about rocks:https://brainly.com/question/19930528

#SPJ1

\(\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}\)

Actually Welcome to the concept of Efficiency.

We know that, efficiency is given as,

E (eta) = Output work / Input Work

hence, here, E = 29% and Output work = 225

hence, 29% = 29/100 in real..

hence, the work done on piston is given as,

29/100 = 225/I

therefore, I = 225*100/29 ==> I = 22500/29 ==> I = 775.8 joules

hence, the work done on the pistons is 775 J

Answer:

speed=330m/s

Explanation:

the speed of wave is given as

speed(meter per second) =frequency(hertz) * wavelength(meters)

so using the above formula we substitute the figures given in the question in the formula we get

speed = 0.4*825

speed =330m/s

note m/s is the si unit for speed which is read as meter per second

therefore speed =330m/s