p. mickelson, y. m. de escobar, p. anzel, b. desalvo, s. nagel, a. traverso, m. yan, and t. killian, journal of physics b: atomic, molecular and optical physics 42, 235001 (2009).

Answer:

Time taken = 2.444sec

Explanation:

Greetings !

Given values :-

Required values:-

Solution/ work-out:-

Firstly change the km/hr value to m/s

Then, recall the Velocity-Time Equation:

\(vf = vi \: + at\)

substitute known variables into the equation

\((12.22) = (0) + (5)t\)

Solve for time

\(t = 2.444sec\)

Hope it helps!!

Answer:

the neutron star becomes a black hole

Answer:

neutron stars

Explanation:

not really sure of an explanation, but maybe try looking up for "What type of star ends up as a blackhole?" should help

The approximate atmospheric pressure at an altitude of 2000 meters is approximately 869.43 millibars. The atmospheric pressure in millibars at altitude x meters can be approzimated by the following function. the function is valid for values of x between 0 and 10,000. \(f(x)= 1038(1.000134)^-x\) when x between 0 and 10,000.

a. The atmospheric pressure at sea level can be found by putting x=0 in the given functionTo find the atmospheric pressure at sea level (x = 0), we can substitute x = 0 into the given function:

f(x) = \(1038(1.000134)^-x\)

f(0) = \(1038(1.000134)^0\)

f(0) = 1038

Therefore, the atmospheric pressure at sea level is approximately 1038 millibars.

b. To find the approximate atmospheric pressure at an altitude of 2000 meters (x = 2000), we can substitute x = 2000 into the given function:

f(x) =\(1038(1.000134)^-x\)

f(2000) = \(1038(1.000134)^-2000\)

Using a calculator or computer program to evaluate this expression, we find that the approximate atmospheric pressure at an altitude of 2000 meters is approximately 869.43 millibars.

c. As altitude increases, the atmospheric pressure generally decreases. This is because as we move higher in the atmosphere, there is less air above us exerting pressure downward. The decrease in atmospheric pressure with increasing altitude is due to the decreasing density of air molecules as we move away from the Earth's surface.

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Answer: -3x+13

Explanation:

The slope of the line that passes through the point (3,4) is 1/3. Then , the intercept of the perpendicular line is 3 . Then, the equation of the line is y = 1/3x + 3.

Coordinates are numbers which describes the position of a shape, curve or line. The coordinates are written in terms of x and y axis values. A line or curve passing through certain points can be represented by an equation.

For a straight line the equation is y = mx + c

where m is the slope of the line and c be the intercept on y- axis.

For two perpendicular lines, the slope will be opposite inverse of each other.

The slope of the line y = -3x + 1 is -3. Then, the slope of the line which is perpendicular to this line is - (1/-3) = 1/3.

Then the equation of the line is y = 1/3 x + c.

given the line passes through the point (3,4).

Then,

4 = 1/3×3 + c

c = 3.

Therefore, the equation of the second line is y = 1/3 x + 3.

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Answer:

v₃ = 9.62[m/s]

Explanation:

To solve this type of problem we must use the principle of conservation of linear momentum, which tells us that the momentum is equal to the product of mass by velocity.

We must analyze the moment when the astronaut launches the toolkit, the before and after. In order to return to the ship, the astronaut must launch the toolkit in the opposite direction to the movement.

Let's take the leftward movement as negative, which is when the astronaut moves away from the ship, and rightward as positive, which is when he approaches the ship.

In this way, we can construct the following equation.

\(-(m_{1}+m_{2})*v_{1}=(m_{1}*v_{2})-(m_{2}*v_{3})\)

where:

m₁ = mass of the astronaut = 157 [kg]

m₂ = mass of the toolkit = 5 [kg]

v₁ = velocity combined of the astronaut and the toolkit before throwing the toolkit = 0.2 [m/s]

v₂ = velocity for returning back to the ship after throwing the toolkit [m/s]

v₃ = velocity at which the toolkit should be thrown [m/s]

Now replacing:

\(-(157+5)*0.2=(157*0.1)-(5*v_{3})\\(5*v_{3})= 15.7+32.4\\v_{3}=9.62[m/s]\)

The velocity with which the astronaut must throw the tool kit is 9.62 m/s.

The given parameters:

Apply the principle of conservation of linear momentum to determine the velocity of the tool kit;

\(m_1 u_1 + m_2u_2 = v(m_1 + m_2)\\\\-0.1(157) \ + 5u_2 = 0.2(157 + 5) \\\\-15.7 + 5u_2 = 32.4\\\\5u_2 = 32.4 + 15.7\\\\5u_2 = 48.1\\\\u_2 = \frac{48.1}{5} \\\\u_2 = 9.62 \ m/s\)

Thus, the velocity with which the astronaut must throw the tool kit is 9.62 m/s.

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Answer:

The time spent by the rock in air is 3 s.

Explanation:

Given;

initial  horizontal velocity of the rock, u = 20 m/s

horizontal distance traveled by rock, R = 60 m

The the range of the projectile is given by;

R = vt

where;

v is the initial  horizontal velocity of the rock

t is the time spent by the rock in air

t = R/v

t = 60 / 20

t = 3 s

Therefore, the time spent by the rock in air is 3 s.

Given values are:

Initial horizontal velocity,

Horizontal velocity,

The range of projectile will be:

→ \(R = vt\)

or,

→ \(t = \frac{R}{v}\)

By substituting the values,

     \(= \frac{60}{20}\)

     \(= 3 \ s\)

Thus the response above is right.

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A. a cantaloupe that is curving to the right as it rolls down the aisle of a grocery store.

B. a heavy coconut that is speeding up as it falls from a tree toward the ground

The acceleration of an object is defined as the change in velocity to change in time of motion of an object.

Mathematically, the formula for acceleration is given as;

a = Δv/Δt

where;

An object moving a constant speed or velocity is not accelerating, because it we apply the formula for acceleration, we will obtain a zero acceleration since the initial velocity of the object will be equal to its final velocity.

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The answer is A. high, low.

When using a spectrometer for turbidity measurements as indicators of growth, high \% absorbance readings are generally associated with a more turbid or cloudy sample that is indicative of bacterial growth. Therefore, the answer is A. high, low.

What is a spectrometer?

A spectrometer is a device used to calculate the optical spectra of light emitted from an object. It is an instrument used to determine the relationship between wavelength and color or frequency and color.

There are various forms of spectrometers that can be used for different purposes. UV-visible spectrometers, fluorescence spectrometers, and infrared spectrometers are examples of spectrometers, and they are used to measure absorbance.

Absorbance, A is related to the transmittance, T of the light beam using the equation A = -log10(T).

Bacterial growth and turbidity in microbiology, turbidity is frequently used as an indirect measurement of bacterial growth in liquid media. Turbidity is a measure of the degree to which the fluid lost its clarity due to the presence of suspended particles or microbial growth.

It is proportional to the number of particles or bacteria present in a sample, and as the number of bacteria in a sample grows, so does the turbidity of the sample. Therefore, as the turbidity of a sample increases, so does the \% absorbance.

The instrument's output is expressed as a percentage absorbance (\%A), which corresponds to the amount of light absorbed by the sample.

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The equation =c/f relates wavelength and frequency. There is an inverse relationship between wavelength and frequency.

One crucial equation connects them all: The speed of light is equal to the frequency times the wavelength of any electromagnetic wave. If we know the other measurement, we can use this connection to calculate the wavelength and frequency of the any electromagnetic wave.

The distance between the crests of two waves is known as the wavelength, which also applies to troughs. The number of vibrations that pass across a certain area in a second is the frequency, which is expressed in seconds per cycle (Hz) (Hertz). This article discusses how wavelength and frequency relate to one another.

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Answer:

The theory of plate tectonics proposes that the Earth's outer layer, or lithosphere, is broken up into a number of large plates that interact with one another. These plates are slowly moving across the Earth's surface, driven by convection currents in the mantle below.

The mantle is the layer of the Earth that lies beneath the crust, and it is made up of hot and viscous rock. At certain depths, the mantle rock can become partially molten, and this creates convection currents. These currents are driven by the heat difference between the deeper, hotter parts of the mantle and the cooler, shallower regions.

As these convection currents move, they push against the base of the lithosphere, which is divided into several plates. The interaction between these plates creates a variety of geological features, including mountain ranges, volcanoes, and earthquakes.

The movement of the plates is hardly noticeable in human terms, with rates of movement averaging to just a few centimeters per year. However, over millions of years, these small movements can add up, leading to significant changes in the Earth's geography and climate. For example, the collision of two plates can result in the formation of a mountain range, while the separation of two plates can create a new ocean basin.

Answer: 10^23

Explanation:10 times 10

Kinetic energy increases because the magnets move in the opposite direction of the field.

A magnet is an object that can attract certain materials, such as iron and steel. Magnets have two poles, a north pole and a south pole, and they can attract and repel other magnets. When two magnets are placed near each other, their magnetic fields interact and the force of attraction or repulsion can be felt. Magnets can also pick up objects made of iron and steel, such as paper clips and nails. Magnets can be made of different materials, including iron, nickel, cobalt, and other alloys. Natural magnets are found in the earth and are known as lodestones.

When two magnets are pulled apart, their relative motion generates a magnetic field that opposes the original field. This increases the kinetic energy stored in the system.

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Answer:

b

Explanation:

Answer:

Each column is called a group. The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements.

Explanation:

Answer:

a) 4

b) 5

c) 2s

d) 10 m/s

e) 5-10m/s^2

want to zøom?

Explanation:

derive its name from a Native American word meaning wild onion

Answer:

To increase the volume of moving water, impoundments or dams are used to collect the water. An opening in the dam uses gravity to drop water down a pipe called a penstock. The moving water causes the turbine to spin, which causes magnets inside a generator to rotate and create electricity.

Explanation:

Hope this helped, Have a Great Day!!

The magnitude of the net force on particle Q₂ is  6.487 x 10⁶ N.

The net force on particle Q₂ is obtained by applying Coulomb's law of electrostatic force.

Force between Q₁ and Q₂;

F₁₂ = kq₁q₂/r²

where;

F₁₂ = (9 x 10⁹ x 20.5 x 10⁻³ x 9.3 x 10⁻³)/(0.98)²

F₁₂ = 1.787 x 10⁶ N

Force between Q₂ and Q₃;

F₂₃ = kq₂q₃/r²

F₂₃ = (9 x 10⁹ x 9.3 x 10⁻³ x 31.6 x 10⁻³)/(0.75)²

F₂₃ = 4.7 x 10⁶ N

The net force on particle Q₂;

F(net) = F₁₂ + F₂₃

F(net) = 1.787 x 10⁶ N +  4.7 x 10⁶ N

F(net) =  6.487 x 10⁶ N

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Answer:

0.00025 kilometers

Explanation:

divide the length value by 1e+6

Answer:

250 mm = 0.00025 km.

Explanation:

250 mm equal 0.00025 km

Conversion details

To convert mm to km use the following formula:

1 mm equals 0.000001 km

So, to convert 250 mm to km, multiply 0.000001 by 250 i.e.,

250 mm = 0.000001 * 250 km = 0.00025 km

(hope this helps can i plz have brainlist :D hehe)

Answer:

united states

Explanation:

give brainiest please

Answer:

La fuerza que realiza el motor es 2035 N.

Explanation:

Podemos encontrar la fuerza del motor usando la siguiente ecuación:

\( F = ma \)   (1)

En donde:

m: es la masa del coche = 550 kg

a: es la aceleración

Se puede calcular la aceleración mediante la siguiente ecuación cinemática:

\( v_{f} = v_{0} + at \)   (2)

En donde:

\( v_{f}\): es la velocidad final del coche = 100 km/h

\( v_{0} \): es la velocidad inicial del coche = 0

t: es el tiempo = 7,5 s

Resolviendo la ecuación (2) para "a" tenemos:

\( a = \frac{v_{f} - v_{0}}{t} = \frac{100\frac{km}{h}*\frac{1000 m}{1 km}*\frac{1 h}{3600 s} - 0}{7,5 s} = 3,70 m/s^{2} \)

Entonces, la fuerza es:

\( F = ma = 550 kg*3,70 m/s^{2} = 2035 N \)

Por lo tanto, la fuerza que realiza el motor es 2035 N.

Espero que te sea de utilidad!

Answer:

Thank me mark me brainliest

Explanation:

I did not explain because i got a photo

The height of the image produced is 1.3 cm. Therefore, the nature and location of the image is a virtual image, 1.3 cm tall, 16.7 cm same side as the object.

The correct option is A virtual image, 1.3 cm tall, 16.7 cm same side as the object.

Given,

Height of the object, h1 = 4.0 cm

Object distance, u = -50.0 cm

Focal length of the diverging lens, f = -25.0 cm

To determine the nature and location of the image, we can use the lens formula, which is given by

1/f = 1/v - 1/u

where:

f is the focal length of the lens

v is the distance of the image from the lens, and

u is the distance of the object from the lens.

The magnification produced by the lens is given by the ratio of the size of the image to the size of the object.

It is given by the formula m = -v/u

where; m is the magnification produced by the lens.

So,1/f

= 1/v - 1/u

On substituting the given values, we get,

1/-25.0

= 1/v - 1/-50.0

we can use the magnification formula. It is given by, m = -v/u On substituting the given values, we get, m = -(-16.7 cm)/(-50.0 cm) = 0.334So, the magnification produced by the lens is 0.334. The negative sign indicates that the image is inverted in nature. The height of the image can be calculated as follows,h2 = |m|h1On substituting the given values, we get,

h2 = 0.334 × 4.0 cm

≈ 1.3 cm

So, the height of the image produced is 1.3 cm. Therefore, the nature and location of the image is a virtual image, 1.3 cm tall, 16.7 cm same side as the object. The correct option is A virtual image, 1.3 cm tall, 16.7 cm same side as the object.

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The value of n is approximately 1.

The value of n can be found using the conservation of momentum and the given information about the elastic collision. Before the collision, the momentum of the system is the sum of the momenta of the two particles: m*v + (-n*m*v). After the collision, the momentum is m*(-1.85*v) + n*m*v_m_final.

Conservation of momentum requires that the initial and final momenta be equal:

m*v - n*m*v = -1.85*m*v + n*m*v_m_final

Dividing both sides by m*v, we get:

1 - n = -1.85 + n*v_m_final

Since the first particle moves in the exact opposite direction with speed 1.85v, we can write:

v_m_final = 1.85 + 1 = 2.85

Now, we can substitute this value into the equation:

1 - n = -1.85 + n*2.85

Solving for n, we get:

n = (1 + 1.85) / 2.85 ≈ 1

So, the value of n is approximately 1.

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332734.34 Joules

Explanation

Kinetic energy is a form of energy that an object or a particle has by reason of its motion and mass, it is represented by the expression

then

Step 1

a) Let

b) now,replace in the formula:

therefore, the answer is 332734.34 Joules

I hope this helps you

A star like the Sun leaves the main sequence due to the exhaustion of its hydrogen fuel.

The core of a main sequence star, including the Sun, is primarily composed of hydrogen undergoing nuclear fusion, converting it into helium. As the hydrogen in the core is consumed, the core contracts and heats up, while the outer layers expand. Eventually, the balance between gravity and the outward pressure from fusion is disrupted, causing the star to evolve. When hydrogen fuel becomes scarce in the core, the fusion rate decreases, leading to a decrease in the pressure supporting the outer layers. This causes the outer layers to expand, and the star enters a new phase known as the red giant phase. As the star expands, it becomes larger and cooler, with its color shifting towards red. The star's luminosity also increases significantly during this phase.

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When you push a pencil off your desk, the energy transformation that takes place is that potential energy transforms into kinetic energy.

The correct answer to the given question is option C.

Potential energy is the energy stored within an object because of its position or configuration.

In this scenario, the pencil has potential energy because of its elevated position on the desk. When the pencil is pushed off the desk, it begins to move, which means that it has kinetic energy. Kinetic energy is the energy of motion.

As the pencil falls off the desk, its potential energy is transformed into kinetic energy, which is the energy that results from its motion. The faster the pencil falls, the greater its kinetic energy will be because kinetic energy is directly proportional to the square of an object's velocity.

Therefore, when you push a pencil off your desk, the potential energy that it has because of its elevated position is transformed into kinetic energy as it falls towards the ground.

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The right answer is (C). These velocities' magnitudes are connected by the formula v(2)v(o)+ v (1)

The direction of a body or object's movement is defined by its velocity. Through its basic form, speed is just a scalar quantity. In essence, velocity is a vector quantity. It refers to the speed at which distance changes. It is the migration change rate.

Velocity is a vector quantity because it has alike magnitude and direction. Speed is a scalar quantity because it just has magnitude and no direction.Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt.

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the complete question is -

An object has velocity v(1) relative to the ground.An observer moving with a constant velocity v(o) relative to the ground measure the velocity of the object tov(2) be (relative to the observer). The magnitudes of these velocities are related by

(a) v(o)≤v(1)+v(2)

(b) v(1)≤v(2)+v(o)

(c) v(2)≤v(o)+v(1)

(d) All of the above are true