What is one source error associated with self-report inventories, and what is one of its solutions?
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The total air drag force on the airliner does work at a rate of approximately 9.53 x 10^8 watts when it is flying at a constant altitude and speed with each of its 4 engines delivering 100,000 horsepower of mechanical power.

The total air drag force on the airliner does work against the motion of the airliner, causing it to lose mechanical energy. The rate at which the air drag force does work is given by,

P = F_drag * v

where P is the power (rate of work) in watts, F_drag is the air drag force in newtons, and v is the velocity in meters per second.

To solve the problem, we need to convert the given values to SI units. 100,000 horsepower is equivalent to,

P_mech = 100,000 hp * 746 W/hp = 7.46 x 10^7 W

The total mechanical power delivered by the 4 engines is,

P_total = 4 * P_mech = 2.98 x 10^8 W

The velocity of the airliner is,

v = 550 mi/h * 1609.34 m/mi / 3600 s/h = 245.05 m/s

This force can be expressed in terms of the aerodynamic drag coefficient Cd, the air density rho, and the frontal area A of the airliner:

F_drag = 1/2 * Cd * rho * A * v^2

For the purposes of this problem, we will assume that Cd = 0.02, rho = 1.2 kg/m^3, and A = 200 m^2 (typical values for a large airliner at cruising altitude).

Substituting the given values.

F_drag = 1/2 * 0.02 * 1.2 kg/m^3 * 200 m^2 * (245.05 m/s)^2 = 3.89 x 10^6 N

P = F_drag * v = 3.89 x 10^6 N * 245.05 m/s = 9.53 x 10^8 W

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In component form, the displacement vectors become

• 350 m [S]   ==>   (0, -350) m

• 400 m [E 20° N]   ==>   (400 cos(20°), 400 sin(20°)) m

(which I interpret to mean 20° north of east]

• 550 m [N 10° W]   ==>   (550 cos(100°), 550 sin(100°)) m

Then the student's total displacement is the sum of these:

(0 + 400 cos(20°) + 550 cos(100°), -350 + 400 sin(20°) + 550 sin(100°)) m

≈ (280.371, 328.452) m

which leaves the student a distance of about 431.8 m from their starting point in a direction of around arctan(328.452/280.371) ≈ 50° from the horizontal, i.e. approximately 431.8 m [E 50° N].

Complete question:

A hydraulic jack is used to lift a car by applying a force of 120N at the pump piston, if the area of the ram and pump piston are 100cm squared and 1m squared respectively. What is the weight of the car?

Answer:

the weight of the car is 1.2 N

Explanation:

Given;

applied force, F₁ = 120 N

area of the effort (pump), A₁ = 1 m²

area of the load (ram), A₂ = 100 cm² = 1 x 10⁻² m²

let the weight of the car = F₂

The applied pressure is constant and the following equations can be used to calculate the weight of the car.

\(P = \frac{F_1}{A_1} = \frac{F_2}{A_2} \\\\F_2 = \frac{F_1 \times A_2}{A_1} \\\\F_2 = \frac{120 \times (1\times 10^{-2})}{1} \\\\F_2 = 1.2 \ N\)

Therefore, the weight of the car is 1.2 N

A moving clock must move at a speed of 0.87c faster in order to be seen by a stationary clock.

When something moves you, you feel a strong feeling like sadness, pity, or sympathy. Seeing how much total strangers could care for one another is incredibly touching. Synonyms: moving, heartfelt, impactful, and exhilarating Additional words for moving

Sorry to be the bearer of bad news, but moving usually costs more of it than you anticipate. The cause? During the process, additional moving charges like packing extras, closing fees, and transportation prices pile up. Fortunately, if you understand what to anticipate, there are ways to prepare & budget for such moving costs.ndicate the time.

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The speed of the astronaut after launching our feline superhero is 1.4 m/s.

The speed of the astronaut is determined from the principle of conservation of linear momentum.

Pi = Pf

where;

86vₓ = 4.8 x (25 cos40)

86vₓ = 91.9

vₓ = 91.9 / 86

vₓ = 1.07 m/s

The vertical component of the speed;

86vy = 4.8 x (25 sin40)

86vy = 77.1

vy = 77.1 / 86

vy = 0.9 m/s

The resultant speed of the astronaut is calculated as;

v = √ ( vₓ² + vy² )

v =  √ ( 1.07² + 0.9² )

v = 1.4 m/s

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According to the given statement the number x is 2. The number x represents the dimensions of the term p * a in the given equation.

By comparing the dimensions of both sides of the equation, we find that x is equal to 2.

The equation given is:

Volume per second = k * (p * a) / n

Where:
- k is a constant
- p is the excess pressure (force per unit area)
- a is the radius of the pipe
- n is the frictional quantity of dimension MLT⁻¹


To find the number x, we need to determine the dimensions of each term in the equation.

1. Dimension of Volume per second:

  - Volume has the dimension L³ (length cubed)
  - Time has the dimension T (time)
  - Therefore, Volume per second has the dimension L³  / T

2. Dimension of k:

  - The equation states that k is a constant. Constants are dimensionless.

3. Dimension of p * a:

  - Pressure has the dimension M / (L * T² ) (mass divided by length and time squared)
  - Radius has the dimension L (length)
  - Multiplying pressure by radius results in the dimension M / (L * T² ) * L = M / (L²  * T² )

4. Dimension of n:

  - Given in the question, n has the dimension MLT⁻¹
(mass times length times time to the power of -1)

Now, we can equate the dimensions:

L³  / T = k * (M / (L²  * T² )) * MLT⁻¹


Simplifying the dimensions:

L³  / T = k * M / (L²  * T² ) * MLT⁻¹


L³  / T = k * M / L²  * M / T²  * L^-1 * T⁻¹


L³  / T = k * M²  / L²  * T⁻¹


To equate the dimensions, both sides of the equation must have the same dimensions. Therefore:

L³ / T = k * M² / L² * T⁻¹


Comparing the dimensions on both sides, we can conclude:

L³ / T = k * M² / L²* T⁻¹

The dimensions on the left side are L^3 / T, and the dimensions on the right side are (k * M²) / (L² * T).

Therefore, the number x is 2.

The number x represents the dimensions of the term p * a in the given equation.

By comparing the dimensions of both sides of the equation, we find that x is equal to 2.

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Answer:

1,3,7,8

Explanation:

Edge 2021

Answer:

Self demagnetization means when magnets' poles are free (suspended) for too long, their magnetic attraction becomes weaker and thus, self demagnetizes.

According to the Third Kepler Law, the average distance from the Sun (A) is directly proportional to the cube root of the orbital period (T). So, for a new planet with an orbital period of 6548 years, we can calculate the average distance (A) using the equation: A = (T^(1/3)) x (A_earth^(2/3)), where A_earth is the average distance of the Earth from the Sun, which is approximately 150 million km.
Plugging in the given values, we get: A = (6548^(1/3)) x (150x10^6 km)^(2/3) = ∼260AU.

Therefore, the average distance from the Sun for the newly-discovered planet in our solar system is ∼260AU.
The average distance from the sun for the newly-discovered planet in our solar system is approximately 240AU.Kepler's third law states that the square of the orbital period is proportional to the cube of the semi-major axis of the orbit. It states that "the square of the period of revolution of a planet is proportional to the cube of the semi-major axis of its orbit." Kepler's third law mathematically connects the distance of a planet from the sun and its orbital period, that is, a planet's "year" or "revolution."The equation used to relate the third Kepler law is: T2 = (4π2 a3) / GMWhere T is the orbital period, a is the semi-major axis of the orbit, G is the gravitational constant, and M is the mass of the Sun. The value of T is provided as 6548 years, which is substituted in the equation above:6548^2 = (4π2 × a3) / (6.674 × 10-11 × 1.989 × 1030)Solving for a, we get:a = 239.8 ≈ 240 AU.Hence, the answer is option C. ~240AU.

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The statement is true when we insert parentheses following the order of operations (PEMDAS) and the correct statement is (64 / 2) x (4 / 2) = 64.

To make the statement true by inserting parentheses in 64 / 2 x 4 / 2 = 4 we need to insert parentheses that follows the rule of order of operations.

We need to remember PEMDAS which stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

We will use this to determine the correct placement of the parentheses

64 / 2 x 4 / 2 can be written as (64 / 2) x (4 / 2).

Let's evaluate this expression:

(64 / 2) x (4 / 2) = 32 x 2

Simplifying further:

32 x 2 = 64.

By inserting parentheses as (64 / 2) x (4 / 2), the statement becomes true, and the result is 64.

Therefore, the statement is true when we insert parentheses following the order of operations (PEMDAS) and the correct statement is (64 / 2) x (4 / 2) = 64.

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How Maria can correct her error is by changing the fourth point to "applies to accelerating objects.". Option D. This is further explained below.

Generally, Einstein’s special relativity is simply defined as how speed affects matter, time, and space.

In conclusion, The theory contains a method for defining the link between energy and matter using the speed of light.

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Answer:

Displacement (km)

Explanation:

The y axis is the vertical axis pointing up and down. This is labeled as the the displacement (km) in the graph.

A. covalent. The covalent compound must possess a covalent link in which the two atoms involved have substantial disparities in their electronegativity for a polar covalent bond to exist.

The most electronegative element is fluorine. Therefore, C and F exhibit the largest variation in electronegativity . The most polar bond is the C-F one as a result.

The electron pair is shared evenly by the two linked atoms in a non-polar covalent connection. H2 is a kind of hydrogen gas. Since the two hydrogen atoms are the same, their bond is non-polar.

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Answer:

The distance travelled by car is 6km.

Explanation:

4km+2km=6km

Answer:

Work shown below!

Explanation:

\(Time=\frac{Distance}{Speed} =\frac{1km}{1.2mm/s}=\frac{1}{1.2}=0.8333333\)

The mineral that is most needed during the clotting cascade is d. calcium.

Calcium plays a crucial role in blood clotting by assisting in the activation of certain clotting factors and promoting the formation of fibrin, which is necessary for clot formation. Without sufficient calcium, the clotting cascade cannot proceed properly. Magnesium, sodium, iron, and adenosine diphosphate (ADP) are not primarily involved in the clotting cascade. Calcium is the mineral that is essential for the clotting process to occur effectively.

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Explanation:

The magnitude of the net force acting on the tennis ball is 209.8 N.

To determine the net force acting on the tennis ball, we can use the kinematic equation:

\(v^2 = u^2 + 2as\)

where v is the final velocity (46.0 m/s), u is the initial velocity (0 m/s), a is the acceleration, and s is the distance traveled (41.4 cm or 0.414 m). Rearranging this equation to solve for the acceleration, we get:

\(a = (v^2 - u^2) / 2s\)

Substituting the values given in the problem, we get:

\(a = (46.0^2 - 0^2) / (2 * 0.414) = 2491.3 m/s^2\)

Next, we can use Newton's second law of motion, which states that the net force acting on an object is equal to its mass times its acceleration (F = ma). Substituting the values given in the problem, we get:

\(F = ma = 0.0525 kg * 2491.3 m/s^2 = 209.8 N\)

Therefore, the magnitude of the net force acting on the tennis ball is 209.8 N.

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Answer

hdhcu very much xbeyxbuxbduxb shx

The amount of power is dissipated as heat inside the battery is 12 W.

Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.

Power = P

Voltage = V = 12 V

Resistance = R = 7.54 Ω

Current = I = 0.999 A

Power = P =

= Power = Voltage X Current

= P = V X I

= P = 12 X 0.999

= P = 12 W

Thus, the power dissipated by the battery is 12 W approximately.

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The value of charge q on an equipotential surface that surrounds a point charge is calculated to be 12.52× 10⁻⁹ C.

The expression to find out electric potential at a distance r is given by,

v = k q /r

where,

v is electric potential

q is charge

r is distance

k is coulomb's constant (9 × 10⁹ Nm²/C²)

Electric potential is given as 490 V.

Area is given as 1.1 m². The expression for area is A = 4 π r².

Making r as subject, we have,

Radius r = √(A/4π) = √(1.1/4π) = √0.087 = 0.23 m

To find out charge, let us make q as subject,

q = v r / k = (490 × 0.23)/(9 × 10⁹) = 12.52× 10⁻⁹ C

Thus, the charge on an equipotential surface that surrounds a point charge is calculated to be 12.52× 10⁻⁹ C.

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ANSWER

EXPLANATION

The voltage, E, is related to the number of windings, W, by the equation:

To find the number of windings that will produce 760 V, we have to solve for W when E is 760 V. That is:

That is the answer.

NASA estimates that a white dwarf's surface has 350,000 times as much gravity as Earth has.

The density of a white dwarf the size of Earth is 1 x 109 kg/m3. The density of the Earth itself is only 5.4 x 103 kg/m3. Therefore, a white dwarf has 200,000 times as much density.

Sirius B is smaller than Earth at 7,500 miles (12,000 kilometers) in diameter, but it is more denser. A 150-pound individual would weigh 50 million pounds standing on its surface due to the star's strong gravitational field, which is 350,000 times stronger than Earth's.

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Answer:

0.1667Hz

Explanation:

by explanation frequency is given by 1/time

after carrying out the calculation of time we can easily get frequency.

time=speed/distance

=18/3

=6s

but frequency=1/time

hence=1/6

=0.1667hertz

Answer:

Car A has a velocity of 40 km/hr  west.

Explanation:

The velocity of an object is a vector quantity. It has both magnitudes as well as direction.

Arrows are used to show direction.

Car A is moving towards west. Car B is moving towards east-south direction. Car C is moving towards South direction. Car E is moving towards North direction.

So, the correct option is (a) i.e. Car A has a velocity of 40 km/hr  west.

Answer:

I believe it's B.

Explanation:

The force that a magnet exerts on certain materials, including other magnets, is called magnetic force. The force is exerted over a distance and includes forces of attraction and repulsion. North and south poles of two magnets attract each other, while two north poles or two south poles repel each other.

Answer:

Time, t = 50.8 seconds.

Explanation:

Given the following data;

Mass = 6000 kg

Force = 2950 N

Initial velocity = 4 m/s

Final velocity = 29 m/s

To find time;

First of all, we would determine the acceleration of the truck using the following formula;

Force = mass * acceleration

2950 = 6000 * acceleration

Acceleration = 2950/6000

Acceleration = 0.492 m/s²

Next, we find time using the first equation of motion;

\( V = U + at\)

Where;

V is the final velocity.

U is the initial velocity.

a is the acceleration.

t is the time measured in seconds.

Making time, t the subject of formula, we have;

\( t = \frac{V - U}{a}\)

Substituting into the equation, we have;

\( t = \frac{29 - 4}{0.492}\)

\( t = \frac{25}{0.492}\)

Time, t = 50.8 seconds.

Answer:

It states that the rate of change of velocity of an object is directly proportional to the force applied and takes place in the direction of the force. It is summarized by the equation: Force (N) = mass (kg) × acceleration (m/s²). Thus, an object of constant mass accelerates in proportion to the force applied.

Explanation:

Answer:

F=ma where F is the force , m is mass  and a is acceleration.

Explanation: