7) Find F1 and F2
HELP PLEASEEE

Where a tap supplies water at 26°c while another supply at 82°c. If a man wishes to bath with water at 40°c, then the ratio of the mass of hot water to that of cold water is: 1/3.

The ratio of the mass of hot water to that of Cold water is determined as follows:

M₁C (82  40) = M₂C (40-26)

Where M₁C is the Mass of Tap 1; and

M₂C is the Mass of Tap 2.

Thus,

M₁C (82  40) = M₂C (40-26)

M₁/M₂ = 14/42

= 1/3

Thus, it is right to state that the ratio of the mass of hot water to that of cold water is: 1/3.

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Answer:

To solve this problem, we can use the formula for weight:

W = m * g

where W is the weight, m is the mass, and g is the acceleration due to gravity. Since we are given the weight of the boots on Earth, we can solve for the mass as follows:

W = m * g

100 N = m * 10 m/s^2

m = 10 kg

Now we can use the mass to calculate the weight on Mars using the same formula but with the acceleration due to gravity on Mars:

W = m * g

W = 10 kg * 4 m/s^2

W = 40 N

Therefore, the boots would weigh 40 N on Mars where the acceleration of free fall is 4 m/s^2.

Answer:

Jump from tallest building (Burj Khalifa) without any protection kit.

The first great electric bassist from Weather Report who played complex unison lines with other melodic instruments in the group was Jaco Pastorius.

Jaco Pastorius joined Weather Report in 1976 and played a crucial role in shaping the sound of the band during his tenure. He revolutionized the role of the electric bass by introducing innovative techniques, virtuosic playing, and a unique melodic approach.

One of Jaco Pastorius' notable contributions to Weather Report was his ability to play complex unison lines with other melodic instruments in the group. He often played intricate bass lines that intertwined with the saxophone or keyboard melodies, creating a tight and cohesive sound.

Jaco Pastorius' playing style was characterized by his exceptional technical skills, harmonic knowledge, and creative improvisation.

His innovative approach to bass playing, which included harmonics, chords, and melodic solos, expanded the possibilities of the instrument and had a significant influence on future generations of bassists.

Overall, Jaco Pastorius is widely recognized as one of the greatest electric bassists in the history of jazz and fusion music. His contributions to Weather Report helped redefine the role of the bass guitar and left a lasting impact on the genre.

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(a) The angular acceleration of the grinding wheel as it came to rest is approximately -0.008 rad/s² (clockwise).

(b) The wheel made approximately 1000 revolutions during the time it was coming to rest.

(a) We can use the formula of rotational kinematics:

ω = ω₀ + αt

where ω is the final angular velocity, ω₀ is the initial angular velocity, α is the angular acceleration, and t is the time.

Given:

ω = 0 rad/s (final angular velocity)

ω₀ = 20.0 revolutions per second = 20.0 * 2π rad/s (initial angular velocity)

t = 50.0 s

Substituting the values into the formula, we have:

0 = 20.0 * 2π + α * 50.0

Solving for α, we get:

α ≈ -0.008 rad/s² (clockwise)

(b) To find the number of revolutions the wheel made during the time it was coming to rest, we can use the formula:

θ = ω₀t + 0.5αt²

where θ is the angular displacement.

Given:

ω₀ = 20.0 revolutions per second = 20.0 * 2π rad/s (initial angular velocity)

t = 50.0 s

α ≈ -0.008 rad/s² (clockwise)

Substituting the values into the formula, we have:

θ = (20.0 * 2π) * 50.0 + 0.5 * (-0.008) * (50.0)²

Simplifying the equation, we find:

θ ≈ 1000 revolutions

Therefore, the wheel made approximately 1000 revolutions during the time it was coming to rest.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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E = k * (Q / r²). Where E is the electric field intensity, k is the Coulomb's constant (9 x 10⁹ N ), Q is one of the rings' charges, and r is the distance between their centres. The electric field strength is 3125 N/C.

Thus, the distance between the centres of the two rings is r = 24.0 cm, and both rings have the same charge, Q = 20.0 nC.

Transforming the charge from nano Coulombs to Coulombs first Q = 20.0 nC = 20.0 x 10⁹ C

The strength of the electric field:

E = [(20.0 x 10-⁹ C) / (24.0 x 10-2 m)] * [(9 x 10 ⁹)

E = (9 x 10⁹ ) * (20.0 x 10⁹) / (0.24)

E = (9 x 10⁹) * (20.0 x 10⁹ C) / 0.0576

E ≈ 3125 N/C.

Thus, E = k * (Q / r²). Where E is the electric field intensity, k is the Coulomb's constant (9 x 10⁹ N ), Q is one of the rings' charges, and r is the distance between their centres. The electric field strength is 3125 N/C.

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After the dark wand touched the basket, The basket took on a negative charge, the charge was decreased. The dark wand stole electrons from the pail since it had a negative charge.

Charge is a fundamental property of matter that describes the electrical interaction between objects. It is a scalar quantity with units of Coulombs (C) in the SI system. There are two types of charges: positive and negative.

Positive charges have more protons than electrons and are attracted to negative charges. Negative charges have more electrons than protons and are attracted to positive charges. Objects with the same charge will repel each other.

Charge is conserved, meaning that the total charge in a system remains constant, even though the charge distribution can change. This is known as the law of conservation of charge.

Therefore, After the dark wand touched the basket, The basket took on a negative charge, and the charge was decreased. The dark wand stole electrons from the pail since it had a negative charge.

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Given that the number of hailstones is n = 562

The mass of hailstone is m = 2 g = 0.002 kg

The speed of hailstone is v = 5.8 m/s

The time taken will be t = 92 s

The angle is

We have to calculate the force.

The force can be calculated by the formula

Substituting the values, the force will be

To come up with the precise mathematical form of his law of gravity, newton first had to invent the mathematical techniques that we now call the calculus

calculus is a  department of mathematics concerned with the calculation of instantaneous rates of alter, also known as differential calculus, and the summation of infinitely many small factors to decide a few wholes also known as integral calculus. He was a physicist, mathematician, and cosmologist, His claim work in physics without a doubt brought him to this issue, and he felt a have to solve it with an unused mathematical system that essentially hadn't existed up to that point in time. His focus on gravity and laws of motion are connected to his breakthrough in calculus.

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Answer:

.5 m N

Explanation:

Displacement just means distance from starting point, so moving 3 m north then 2.5 m south is the same as if you took 3 steps forward then 2.5 steps backward. The end point is only .5 away from the start point.

The displacement of a hiker if he travels 3.0 m N and then 2.5 m S is 0.5 m.

It is given that the hiker travels 3.0 m North and then 2.5 m South.

It is required to find the displacement of a hiker.

What is the displacement of a hiker if he travels 3.0 m N and then 2.5 m S?

As we know the displacement is the shortest distance acquired by the body or simply we say that difference between the initial and the final point of the body.

From the given question the hiker moves 3.0 m in the north that is in upward direction and from the same point the hiker comes back 2.5 m in south that is downward at the same line. To find the displacement,

Displacement = Final Point - Initial Point

Displacement = (3.0 - 2.5)m = 0.5 m

Thus, the displacement of a hiker if he travels 3.0 m North and then 2.5 m South is 0.5 m.

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Answer:

B. The Law of Conservation of Energy

Explanation:

In Science, energy can be defined as the ability of an object or body to do work. There are two (2) main types of energy and these are;

I. Kinetic energy: it can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

Where, K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

II. Potential energy: it can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Additionally, the various forms of energy are solar energy, electrical energy, chemical energy, thermal energy, wind energy, nuclear energy etc.

Hence, energy is never created of destroyed, it only transforms from one form to another" is the definition of The Law of Conservation of Energy.

The Doppler method can measure the eccentricity of orbit, semimajor axis of orbit, lower limit mass, and orbital period of exoplanets.

Eccentricity of orbit: The Doppler method can provide information about the eccentricity of a planet's orbit by detecting the periodic variations in the star's radial velocity caused by the planet's gravitational pull.

Semimajor axis of orbit: The Doppler method allows for the determination of the semimajor axis of a planet's orbit. By measuring the periodic changes in the star's radial velocity, scientists can infer the distance between the star and the planet, which corresponds to the semimajor axis.

Lower limit mass: The Doppler method can provide a lower limit estimate of a planet's mass. By observing the periodic variations in the star's radial velocity, scientists can calculate the minimum mass of the planet based on the gravitational influence it exerts on the star.

Orbital period: The Doppler method is particularly effective in determining the orbital period of a planet. By measuring the time it takes for the periodic changes in the star's radial velocity to repeat, scientists can accurately determine the planet's orbital period.

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16 people have been chosen by NASA to join its independent study team on unusual aerial phenomena (UAP). UAP, or UFOs in common usage, refers to objects in the sky that cannot be classified as an aircraft or a natural phenomenon.

According to NASA, the team's results would be made public in full report by the middle of 2023. However, as the study will only focus on unclassified data, don't seek for any classified data there.

We've chosen 16 people to be a part of an independent study team on unidentified aerial phenomena (UAP), or sky observations that cannot be explained by recognized natural phenomena or flying objects. Beginning in nine months is the study on October 24.

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(a) A = B × r is a vector potential for B, where r = {x, y, 0}.

(b) The flux through a surface S can be calculated as Φ = ∫B·dA, where B is the magnetic field and dA is an infinitesimal area vector perpendicular to the surface.

(a) To verify that A = B × r is a vector potential for B, we need to show that ∇ × A = B.

Using the cross product property, we have ∇ × A = ∇ × (B × r). Applying the vector identity (A × B) × C = B(A · C) - C(A · B), we get ∇ × (B × r) = B(∇ · r) - r(∇ · B).

Since ∇ · r = 0 (as r = {x, y, 0}), and ∇ · B = 0 (as B has a constant magnitude in the z-direction), we find that ∇ × A = B, verifying A = B × r as the vector potential for B.

(b) The flux through a surface S can be calculated as Φ = ∫B·dA, where B is the magnetic field and dA is an infinitesimal area vector perpendicular to the surface.

Given that B has a constant strength b teslas in the z-direction, the flux through surface S will be Φ = ∫B·dA = ∫(0, 0, b) · (dxdy) = b∫dxdy = bA, where A is the area of the surface S.

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Answer:The Sun produces energy by the process of nuclear fusion.Nuclear fusion occurs when lighter nuclei combine to produce a larger, heavier nucleus.Energy is released during nuclear fusion.Nuclear fusion requires very high temperatures and pressures.Nuclear fusion occurs in the core of the Sun when hydrogen atoms combine to form helium atoms.

Mars' two moons, Phobos and Deimos, are small and irregularly shaped, making them more similar in character to asteroids than to other moons in our solar system.

They are believed to be captured asteroids that were pulled into Mars' orbit by its gravity. Phobos is the larger of the two moons and is heavily cratered, while Deimos is smaller and smoother. The moons have been the subject of scientific study and exploration, including a number of missions by space agencies such as NASA, the European Space Agency, and the Soviet Union.

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Answer:

86.2 m  range

Explanation:

Vertical component of initial shot = 30 sin 55= 24.575 m/s

Now you can find out for how long it is in the air

     when it hits the ground , position = 0

            0 = 24.575 t  - 1/2 ( 9.81) t ^2

                         finds t = 5.01 seconds       (Using quadratic formula)

HORIZONTAL component = 30 cos 55 = 17.21 m/s

    it travels this speed for 5.01 seconds

               5.01 * 17.21 = 86.2 m

Explanation:

1- El primer paso para calcular la fuerza del brazo en el punto medio de la excavadora para levantar la tierra, es averiguar dónde está el fulcro, que en este caso está en las manos.

2- El segundo paso es calcular el brazo de potencia, al que llamaremos Bp, y el brazo de resistencia, que estará representado por Br.

Si Bp es igual a la distancia de la potencia al fulcro, Bp = 60cm

y si Br es igual a la distancia desde la resistencia al fulcro, entonces

Br = 40 + 60 = 100cm

3- Ahora aplicamos la fórmula de la ley de la palanca. Nosotros

piden que se aplique la fuerza en manos de

en el medio, es decir, la potencia P. La fórmula sería:

Y en el tercer paso, aplicaremos la fórmula de la ley de la palanca, que es:

P = R x Br / Bp

P = 8 x 100/60

P = 13,33 Kgf

Entonces la respuesta final es:

P = 13,33 Kgf

In Newton-cotes formula, if f(x) is interpolated at equally spaced nodes by a polynomial of degree one . The correct answer is A) Trapezoidal rule.

In the Newton-Cotes formula, the Trapezoidal rule is used when f(x) is interpolated at equally spaced nodes by a polynomial of degree one.

The Trapezoidal rule is a numerical integration method that approximates the definite integral of a function by dividing the interval into smaller segments and approximating the area under the curve with trapezoids.

In the Trapezoidal rule, the function f(x) is approximated by a straight line between adjacent nodes, and the area under each trapezoid is calculated. The sum of these areas gives an approximation of the integral.

The Trapezoidal rule is a first-order numerical integration method, which means that it provides an approximation with an error that is proportional to the width of the intervals between the nodes squared.

It is a simple and commonly used method for numerical integration when the function is not known analytically.

Simpson's rule, on the other hand, uses a polynomial of degree two to approximate f(x) at equally spaced nodes and provides a higher degree of accuracy compared to the Trapezoidal rule.

Therefore, the correct answer is A) Trapezoidal rule.

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Answer:

42,944

Explanation: 9,760 kg * 4.4 m/s2 = 42,944

The kinetic energy of the object will have decreased if the net work done by the forces: Zero.

Kinetic energy is the strength an item has due to its motion. If we want to accelerate an item, then we have to practice a force. applying pressure calls for us to do paintings. After paintings have been finished, power has been transferred to the item, and the object may be shifting at a new constant pace.

Solution:-

a) Arm wore energy theorem,

WwW = AE

Sy if AKEDO, WO

Now, the correct option is: achn4 on the project is positive

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Answer:

Explanation:

The force of static friction acting on the box is the frictional force;

Frictional force Ff = Wsin theta (force acting along the ramp)

W is the gravitational force known as the weight

Ff = 112.1sin42°

Ff = 112.1(0.6691)

Ff = 75.00N

Hence he force of static friction acting on the box  if box has a gravitational force of 112.1 N id 75.00N

Answer:

75N i did test

Explanation:

Answer:

the answer is 0.7

Explanation:

because in this this case he asked nearest millimeter so the anwer can be qualified as 0.7 you can covert this into cos tita

A 0.7 m

A meter ruler is a gadget or a sort of ruler that is used to measure the length and distance of various objects.

A meter rule has a length of one meter, which is equal to one hundred centimeters, as the name suggests.

According to the questions,

On a metric ruler, each individual line represents a millimeter (mm). The numbers on the ruler represent centimeters (cm). There are 10 millimeters for each centimeter. To read a metric ruler, each individual line represents .

As 0.7m = 70cm =700mm

Meter ruler can measure up to 100 cm. As the meter ruler is of 1m.

A metre ruler has a length of one metre, which is equal to one hundred centimetres, as the name suggests. A metre rule, on the other hand, is divided into smaller units called millimetres, with each centimetre divided into ten millimetres.

A metre rule, on the other hand, is divided into smaller units called millimetres, with each centimetre divided into ten millimetres.

As a result, up to one millimetre, a metre rule can be used to measure the shortest length.

A metre rule can be used for more than just measuring distances; it can also be used to draw straight lines and cut blades.

Therefore,

0.7m reading is shown to the nearest millimeter.

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The average density of the duck is determined to be 0.28 times the density of water.

To determine the average density of the duck, we can use the principle of buoyancy. When an object floats, it displaces a volume of liquid equal to its own weight. Therefore, the weight of the duck is balanced by the weight of the liquid it displaces.

Let's assume the total volume of the duck is V. Since 28% of its volume is beneath the water, the volume of water displaced by the duck is 0.28V.

The density of water is generally close to 1 g/cm³ or 1000 kg/m³. We can use this value to calculate the average density of the duck.

The weight of the water displaced by the duck is given by:

Weight of water = Density of water × Volume of water = 1000 kg/m³ × 0.28V

Since the weight of the duck is balanced by the weight of the water, the average density of the duck can be calculated as:

Average density of the duck = Weight of the duck / Volume of the duck

Since the weight of the duck is equal to the weight of the water displaced, we have:

Average density of the duck = Weight of water / Volume of the duck = (1000 kg/m³ × 0.28V) / V = 280 kg/m³

Therefore, the average density of the duck is 280 kg/m³.

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Answer:

To find the volume of a rectangular object, measure the length, width and height. Multiply the length times the width and multiply the result by the height. The result is the volume. Give the result in cubic units, such as cubic centimeters.

Explanation:

Answer:

Kinetic energy is the energy possessed by an object due to its motion. If an object is moving, then it has kinetic energy. The amount of kinetic energy depends on mass and speed.

Explanation: