A 104.328-kg baserunner slides into home base. He starts his slide moving at 8.451 m/s and 6.596 m from home base; when he crosses home plate he is moving at 2.322 m/s. What is the coefficient of kinetic friction between the baserunner and the ground?

Answer:

R2 = 300 Ohms

Explanation:

Let the two resistors be R1 and R2 respectively.

RT is the total equivalent resistance.

Given the following data;

R1 = 100 Ohms

RT = 75 Ohms

To find R2;

Mathematically, the total equivalent resistance of resistors connected in parallel is given by the formula;

\( RT = \frac {R1*R2}{R1 + R2} \)

Substituting into the formula, we have;

\( 75 = \frac {100*R2}{100 + R2} \)

Cross-multiplying, we have;

75 * (100 + R2) = 100R2

7500 + 75R2 = 100R2

7500 = 100R2 - 75R2

7500 = 25R2

R2 = 7500/25

R2 = 300 Ohms

Answer:

b, i think

Explanation:

Collected data plays a crucial role in evaluating whether the criteria for success have been met. By analyzing the collected data, one can assess the progress made towards achieving the desired goals and determine if the criteria have been fulfilled.

Data provides an objective measure of performance or outcomes, allowing for an evidence-based assessment of success. It helps to quantify and track key metrics or indicators related to the criteria for success. By comparing the actual data with the predetermined benchmarks or targets, one can determine if the criteria have been met or if further improvements are required.

Data analysis also enables the identification of trends, patterns, and correlations, providing insights into the factors influencing success. It helps in identifying areas of strength and areas that need improvement. Additionally, data can be used for comparative analysis, benchmarking against previous periods or similar projects, to gain a broader perspective on success.

In summary, collected data provides an objective basis for evaluating progress and success by comparing actual performance against predetermined criteria, identifying areas of improvement, and gaining insights for future decision-making.

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Answer:

Explanation:

Kinematic equation: Final velocity^2 = Initial velocity^2 + 2*acceleration*displacement

As the ball is dropped from rest, initial velocity = 0.

Acceleration = gravity = 9.8m/s^2

Displacement = 7m

So velocity just before it hits ground

= sqrt( 2*9.8*7)

= 11.71m/s

Answer:

b

Explanation:

your welcome :)

Answer:

alloy:using oil and gas

ceramic:mixing metal

and the last goes to the remaining onne

how i know:

i love doing these things so this is simple

The incident angle that light reflected from the surface of this glass completely polarized if the glass is immersed in air is called Polarization Angle.

Brewster's angle, also known as the polarization angle, is the incidence angle at which light with a specific polarization is perfectly transmitted through a clear dielectric surface without reflection. When unpolarized light strikes the surface at this angle, the light reflected from the surface is perfectly polarized. This unique incidence angle is named after the Scottish physicist Sir David Brewster (1781–1868).

Brewster's angle is commonly known as the "polarizing angle" because light that reflects from a surface at this angle is completely polarized perpendicular to the plane of incidence ("s-polarized"). Therefore, a glass plate or stack of glass plates placed at Brewster's angle in a light beam can function as a polarizer.

THE CONCEPT

The concept of a polarizing angle can be extended to the concept of a Brewster wave number in order to account for planar interfaces between two linear bianisotropic materials. In Brewster's angle reflection, the reflected and refracted rays are mutually perpendicular.

Brewster's angle can only exist for one of the incident wave polarizations in magnetic materials, as specified by the relative strengths of dielectric permittivity and magnetic permeability. This has ramifications for the presence of Brewster angles that are generalized for dielectric metasurfaces.

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When you read a piece of paper, it is illuminated because it is reflecting light. The reflection created in this case is diffuse reflection. In a plane mirror, the type of reflection you see is specular reflection. A plane mirror creates a virtual image.

Diffuse reflection occurs when light is scattered in various directions upon hitting a rough or uneven surface, such as paper. This type of reflection causes the light to be dispersed rather than being reflected in a focused or specular manner.

In a plane mirror, the type of reflection you see is specular reflection. Specular reflection occurs when light hits a smooth and flat surface, such as a plane mirror, and reflects at equal angles of incidence and reflection. This results in a clear and sharp reflection with minimal scattering or distortion.

A virtual image is an optical illusion created by the reflection of light rays in a mirror. It appears to be located behind the mirror and cannot be projected onto a screen. In the case of a plane mirror, the virtual image is the same size as the object being reflected and appears to be located at the same distance behind the mirror as the object is in front of it.

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Answer:

An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.

The net charge on the Earth's surface is zero.

The simplifying assumption is that the Earth has an inwardly directed electric field that is a constant 85 N/C and directed towards the center of the Earth. This means that the electric field is acting inwards on any charges that may be present on the Earth's surface. Since electric fields exert forces on charges, the net charge on the Earth's surface must be zero, otherwise, there would be an unbalanced force acting on it, and the charge would be pulled towards the center of the Earth.

This is because the inward electric field is balanced by the charges on the Earth's surface, positive charges and negative charges are distributed in such a way that the net charge on the Earth's surface is zero, and no unbalanced force is exerted on the charges.

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In the electromagnetic spectrum the greater the frequency the smaller the wavelength, then is the frequency is the lowest in the light spectrum the light will have the longest wavelength. Therefore, the answer is b.

The initial speed of a 0.5 kg arrow when it is fired from the bow is equal to 20 m/s.

Kinetic energy can be described as the energy carried by a moving body due to its motion. Work should be done on the object in order to bring the change in the kinetic energy of a moving object.

The kinetic energy of an object can be determined from the mathematical formula:

K.E. = ½ mv²    

Where ‘v’ is the object's velocity and ‘m’ is the object's mass.

Given, the mass of the arrow, m = 0.5 Kg

The work done = kinetic energy = 100 J

The kinetic energy = (1/2)× m ×(v)²

100 = (1/2)× 0.5 ×(v)²

v² = 400

v = 20 m/s

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The shinny outer surface of an electric kettle reflects heat, which reduces energy loss. This helps to make the kettle more efficient, as it takes less energy to heat the water to the desired temperature.

What is the energy ?

Energy is the capacity for doing work. It is a fundamental concept in physics, and is defined as the ability to do work or transfer heat. It is a measurable quantity that can be converted into different forms, such as mechanical, electrical, thermal, chemical, or nuclear energy. Energy is necessary for all types of physical activities, including movement, growth, and development. It is also necessary for many natural processes, such as photosynthesis and respiration. In addition, energy is used to power many of the technologies we use in everyday life, such as computers and cars.

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Answer: A & B

Explanation:

Took The test

Answer:

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m

m

m

m

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n

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kjbn

Answer:

-2.5 is the answer to your question

Answer:

\(a=0.1\ m/s^2\)

Explanation:

Given that,

Initial velocity, u = 0

Final velocity, v = 2 m/s

Time, t = 20 s

We need to find the acceleration of the swimmer. The acceleration of an object is equal to the change in velocity per unit time. It can be given by :

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{2\ m/s}{20\ s}\\\\a=0.1\ m/s^2\)

So, her average acceleration of the swimmer is \(0.1\ m/s^2\).

Answer:

=> Rheostat is an electric device used as a variable resistance, like the regulator of the fan. It is used to change the electric resistance in the electric circuit.

=> Rheostat works on the principle of Ohm’s law. Ohm’s law states that current in a circuit is inversely proportional to the resistance at the given temperature.

\( \infty \infty \infty \)

The following is true about a comet that is on an elliptical orbit around the sun is b. The comet's speed is greatest when it is nearest the sun.

A comet is an object in space with a visible coma or atmosphere, along with a "tail" that can extend for millions of miles through space. A comet's orbit is elliptical or oval-shaped; that is, it is more elliptical or oval-shaped than a planet's or moon's orbit.

As a result, when it approaches the sun, its velocity increases.When the comet is closest to the sun, its speed is greatest. This is due to the fact that as a comet travels closer to the sun, it falls under the sun's gravitational pull, causing its speed to increase. As a result, the comet's velocity at its closest approach to the sun is the highest.

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Well as you've seen before most likely, an apple can fall right off a tree, and stay perfectly fine. its all dependent on the variables. What angle is the apple falling at? Whats the speed, height, even the size of the apple? We must take into aware anything can happen, but its all behind the variables.

Brainliest if helpful

P.S Fact Check with the second person who just answered

Answer:

yes

Explanation:

i had an apple tree and it happens all the time most often they don't break open.

As a low-mass main-sequence star runs out of fuel in its core, it grows more luminous due to the expansion of its outer layers. This expansion is caused by the increase in temperature and pressure in the core.

As a low-mass main-sequence star runs out of fuel in its core, it goes through a series of changes that cause it to become more luminous. The core of a star is the region where nuclear fusion takes place, and this is where the star's energy is generated. As the fuel in the core is used up, the star begins to shrink in size and the pressure and temperature in the core increase.
This increase in temperature and pressure causes the outer layers of the star to expand, which makes the star more luminous. The increased luminosity is a result of the increased surface area of the star, which allows more energy to be radiated into space. As the star continues to use up its fuel, it will eventually become a red giant, which is even more luminous than a low-mass main-sequence star.

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Answer:

E = V / d       125 V / .018 m = 6940 V/m     electric field

F = E Q       force on Q due to E

F = E n e     where n is the number of electrons in Q

m g = E n e

n = m g / E e     where n is the number of electrons e needed to support drop

n = 1.6 * 10E-16 * 9.8 / (6940 * 1.6 * 10E-19)

n = 1.41

Since n needs to be an integral number of charges, the drop would

not be suspended (motionless under these conditions).

Hudson Bay is the  restricted basin that has the coolest temperatures

Hudson Bay is a restricted basin which  remains frozen or is dominated by ice over the summer solstice and through- out much of the high-sun season. This basin experiences a harsh continental climate.

The average annual temperature in almost the entire bay is around 0 °C (32 °F) or below. In the extreme northeast, winter temperatures average as low as −29 °C or −20.2 °F. The region of this basin has very low year-round average temperatures.

This basin starts freezing up by early November, and the northern part of the basin is typically entirely iced over by the end of the month.

correct answer is Hudson bay

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Answer:

A light bulb

Explanation:

Sorry of it wrong

The normalized deflection is given as yEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x].

The deflection of the beam can be determined using the following formula:

y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x], where

- EI is the flexural rigidity of the beam.

The normalized deflection is given as yEl/ wLvs.x/L. Therefore, substituting the given values of the load distribution and using the above formula,

the deflection of the beam is:y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x]

Normalized deflection, yEl/ wLvs.x/L = (W0 L2 sin phi/24 EI) [x3 - 3L2x2 + 2L3x] / W0 L2/Lvs.x/LyEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x]

Therefore, the deflection of the beam is given as y(x) = (W0 L3 sin phi/24 EI) [x3 - 3L2x2 + 2L3x] and the normalized deflection is given as yEl/ wLvs.x/L = (1/24 EI) [x3 - 3L2x2 + 2L3x].

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The elastic potential energy is stored in the spring force -2.5 mJ of work when you pull spring with spring constant k = 50N/m.

The magnitude of the work is :

  1/2kx²=1/2×(50 N/m)×(1cx)²

                         = -25(N/m)×(1×10⁻²)

                          = -25.×10⁻³

The potential energy in the spring force is - 2.5 mJ

The work will be negative and the force will be opposite to the point of application's displacement as the compressed spring pushes the agency. As a result, the spring force has done -2.5 mJ of work.

The potential energy that is stored as a result of the deformation of a specific elastic object, such as a spring, is known as the potential energy of the spring. It depends on the spring constant k and the distance stretched to describe the work required to stretch the spring.

The simple fact that you only need to measure one variable—the displacement x—to determine the stored energy explains the slight preference for 1/2 kx². If you use 1/2 F/x, you must measure displacement and force—the force is frequently difficult to measure.

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If  600-nm  wavelength light and a slit separation of  0.12  mm, then the angular position of the first maximum is  0.005  radians and the angular position of the third maximum is 0.015 radians.

An interference pattern is a pattern of bright and dark fringes that results from the superposition of waves. It is observed when waves from different sources overlap and interfere constructively or destructively.

The angular position of the nth bright fringe in a double-slit interference pattern can be given by:

θn = n × λ / d

where θn is the angular position of the nth bright fringe, λ is the wavelength of light, d is the distance between the two slits, and n is the order of the bright fringe.

For the first maximum:

θ1 = (1) × (600 x 10⁻⁹ m) / (0.12 x 10⁻³ m)  =  0.005 radians

For the third maximum:

θ3  =  (3) × (600 x 10⁻⁹ m) / (0.12 x 10⁻³ m)  =  0.015 radians

Therefore, the angular position of the first maximum is 0.005  radians and the angular position of the third maximum is 0.015  radians.

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