An unmanned satellite orbits the earth with a perigee radius of 10,000 km and an apogee radius of 100,000 km. at how many locations in the orbit is the altitude 10,000 km?

To navigate reversible lanes, drive in the inner lanes corresponding to your desired direction, or stay in the outer lanes for slower traffic. Follow signs and signals for guidance.

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The quantum numbers of the 2 states involved in the transition that emits these photons of energy 1.89 eV of hydrogen is n=3 to n=2

The hydrogen atom is the simplest atom in which an electron moves in the spherically symmetric Coulomb potential of the proton. The total energy of an atom in the center of the mass system can only have discrete values for the stationary states described by the quantum numbers.

Energy of the emitted photon, ΔE=1.89eV. The total energy of a hydrogen atom is given as, En=−13.6/n^2eV, Here, n is the principal quantum number.

An electron absorbs or emits radiation in the form of discrete energy, which equals the difference in energies of the final and initial state. Mathematically, ΔE=Ef−Ei. Here, Ef  is the energy of the final state and Ei  is the energy of the initial state.The difference in energy when an electron makes transition from n=3 to n=2. ΔE3→2= E3−E2=(−1.51eV)−(−3.4eV)= 1.89eV.

Since, ΔE=ΔE3→2. Therefore, the electron makes a transition from n=3 to n=2.

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The tension is in each rope will be 230.535 N .

Tension also known as tensile force is the force developed in a rope, string, or cable when it is stretched by an applied force.

Mass of the gymnast = m = 47 kg

Acceleration due to gravity = g = 9.81 \(m/s^{2}\)

T = m*g

T = 47 * 9.81

T = 461.07 N

Since there are two parallel ropes attached to the ceiling, therefore tension will be equally divided into each rope respectively.

Tension in each rope = t

t = \(\frac{T}{2}\)

t = \(\frac{461.07}{2}\)

t = 230.535 N

The tension in each rope will be 230.535 N, when both the ropes are attached to the ceiling directly above the gymnast.

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The recommended minimum length of time that water should remain motionless in service lines prior to first-draw residential lead sampling is 6 hours.

Lead can leach into drinking water from the service lines and plumbing fixtures, particularly in older homes that may have lead pipes or lead-based solder. When water sits stagnant in these pipes for a period of time, such as overnight or during the day when no one is home, the lead particles that have accumulated in the plumbing system can dissolve into the water. This is why it's important to collect first-draw samples after a period of stagnation.

The EPA recommends a 6-hour stagnation period for collecting first-draw samples from residential plumbing systems because this is typically the longest period of time that water remains stagnant in home plumbing systems. This means that the water has been sitting in the pipes long enough to allow any lead particles to leach into the water, but not so long that the water quality may be affected by other factors, such as microbial growth or chemical reactions.

It's important to note that first-draw samples are used to identify the presence of lead in the plumbing system, but they may not be representative of the actual exposure to lead that a person may experience. This is because the lead concentration in the water can vary depending on factors such as the age and condition of the plumbing system, the water chemistry, and the length of time that water has been sitting in the pipes.

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Answer:

maintaining overall fluid balance regulating and filtering minerals from blood filtering waste materials from food, medications, and toxic substances.

Explanation:

Answer: Nephrons

Explanation: The structural and functional unit of the kidney is known as nephrons. These are microscopic structures found in the kidneys.

A healthy adult has 0.8 to 1.5 million nephrons in the kidney of a adult. Its main function is filtration of the blood.

Blood is filtered and the impurities are collected to excrete out of the body in the form of urine.

Answer:

the answer is Transitional metals

Explanation:

they are hard and have a high density

The answer is;

(A) Akali Metals

Hope this helped.

The correct answer is false.

The surface characteristics of the Sun alter throughout time and are connected to its magnetic field. Sunspots are areas that are cooler than the plasma around them, giving them a darker appearance. The magnetic field lines arc from one sunspot to the next as the sunspots appear in pairs. When gas from the chromosphere or corona is trapped in a magnetic field loop outside the Sun, it forms a prominence. Flares are powerful storms that send fast-moving charged particles and bursts of X-rays into space. Massive bubbles of intense, charged particles known as coronal mass ejections are ejected from the Sun's corona.

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Answer:

1.A

2.C

3.B

4. i.dk about that one

Explanation:

1. It is true that Tracking your exercise can help you stick with an exercise routine.

2. Yes, it is best to do as many different kinds of exercise as possible.

3. Building muscle strength helps with all aspects of fitness

4. Yoga would be the best exercise to achieve this goal.

Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.

The benefits of fitness fluctuate depending on the sort of dying a person experiences. Even if a muscle is stretched, excessive sitting can cause a number of illnesses, many of which are fatal. The individual should engage in mobility activities as well as exercising to improve their stamina.

Thus, exercise is very necessary for health.

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Determining the transit time to Venus for an elliptical trajectory with the departure planet corresponding to the aphelion of the ellipse and the arrival planet at the perihelion depends on several factors.

The transfer time to Venus is affected by the distance between the two planets, the speed at which the spacecraft is traveling, and the gravitational pull of other celestial bodies. The distance between Venus and Earth varies depending on their respective positions in their orbits around the sun, and this can affect the time it takes to reach Venus. The speed at which the spacecraft is traveling is also a crucial factor, as a faster spacecraft will take less time to cover the distance between the two planets. Additionally, the gravitational pull of other celestial bodies, such as the sun and other planets, can also impact the trajectory and duration of the spacecraft's journey to Venus.

In conclusion, there is no single answer to the question of how long it takes to travel to Venus for an elliptical trajectory with the departure planet corresponding to the aphelion of the ellipse and the arrival planet at the perihelion. The exact transfer time would depend on several factors, including the distance between the two planets, the speed of the spacecraft, and the gravitational forces acting on it.

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Answer:

normal force= 480.2 x component=477.4  y component= 110.4

Explanation:

I'm sorry I just did this today in class but i think normal force has to be equal to mg or the mass * gravity of the person and that would be 480.2 newtons. I multiplied 9.8 (gravity) by the mass of 49g

I think for the x and y components you can make a triangle with the angled string and then use sohcahtoa to solve for the tension. I used cos(13) = x/490 to solve for x component and then I used the pythagoran theroem to get the remaining side which would be : a^2 + 477.4^2 = 490^2

hope this can help and that it is correct. good luck

The magnitudes of the x- and y- components of the tension is 477.44N and 110.23N

The normal force acting on the skier is 480.2N

The magnitude of the x- and y- components of the tension is expressed as:

Given the following

Tension T = 490N

x = 490 cos13° = 477.44N

y = 490sin13° =  110.23N

Hence the magnitudes of the x- and y- components of the tension is 477.44N and 110.23N

The normal force acting on the skier is equal to the weight.

N = W = mg

N = W = 49 * 9.8

N = W = 480.2N

Hence the normal force acting on the skier is 480.2N

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Answer:

gravity would pull the ball towards the center of the earth

Answer:

Hope it helps

Explanation:

This is because the force of earth's gravitational field is always directed downwards (towards the center of the earth. ... When the ball is thrown up, it is going against the earth's gravitational field and so, the earth's gravitational force pulls it back down, accelerating it downwards.

Answer:

9 ohms

Explanation:

P = V²/R

R = v²/p = 6²/4 = 36/4 = 9 ohms.

The resistance is 9 Ohm.

To find the resistance, we need to know about the power in term of resistance and voltage.

Thus, we can conclude that the resistance is 9 Ohm.

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Answer:

A resistor is a battery

Answer:

The answer is A

Explanation:

A resistor is a light bulb because it is the flow of an electric current in an electric circuit.

Answer:

true

Explanation:

Dahil ito ay isang uri na laro na

Parang larong may target for you to win

A block of mass has constant velocity and is a distance on a smooth inclined plane, which makes an angle θ with the horizontal.

The work done by Earth on the block can be expressed as W = -mgsinθs. This is because the force of gravity is acting in the opposite direction of the displacement of the block, and the component of the force of gravity along the incline is mgsinθ.
If there is friction between the block and the incline, the work done by Earth on the block would be W = -(mgsinθ + f)s, where f is the force of friction. This is because the force of friction is also acting in the opposite direction of the displacement of the block and must be accounted for in the work done by Earth.
If you are pushing the block so that it is speeding up but there is no friction between the block and the incline, the work done by Earth on the block would still be W = -mgsinθs. This is because the force of gravity is still acting in the opposite direction of the displacement of the block, and there is no additional force of friction to account for. However, the work done by you on the block would be positive, since you are pushing the block in the direction of its displacement.

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A constant force applied to a 2.0 kg object at rest moves it 4.0 m in 2.0 seconds. The impulse of the force applied is 4kg m/s.

Impulse is a term which is used to describe or quantify the effect of force which is acting over time to change the momentum of an object. Impulse is represented by the symbol J and it is usually expressed in the SI unit as Newton-seconds or kg m/s.

Impulse = Change in momentum = ΔP

Momentum = m × v

ΔP = mv -mu

ΔP = 2.0 × 4/2 - 2.0 × 0

ΔP = 2.0 × 2 - 0

ΔP = 4kgm/s

The impulse of force applied is 4 kg m/s.

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Exposure f8 at 1/125 is equivalent to the following exposure settings:

- f/11 at 1/60 (one stop less light)

- f/16 at 1/30 (two stops less light)

- f/5.6 at 1/250 (one stop more light)

- f/4 at 1/500 (two stops more light)

These settings represent the same exposure value (EV) but with different combinations of aperture and shutter speed.

Decreasing the aperture (higher f-number) or increasing the shutter speed (higher denominator) decreases the amount of light entering the camera, while increasing the aperture (lower f-number) or decreasing the shutter speed (lower denominator) increases the amount of light entering the camera.

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Answer: 4 s

Explanation:

Given

The applied force is 70 N

mass of the rock is 28 kg

initial velocity \(u=25\ m/s\)

final velocity \(v=15\ m/s\)

Deceleration provided by force is

\(a=-\dfrac{70}{28}=-2.5\ m/s^2\)

using the equation of motion

\(v=u+at\\\Rightarrow 15=25-2.5t\\\Rightarrow 2.5t=10\\\Rightarrow t=4\ s\)

Answer:

Excessive paranoia, worry, or anxiety.

Long-lasting sadness or irritability.

Extreme changes in moods.

Social withdrawal.

Dramatic changes in eating or sleeping patter

Explanation:

hope it helps brainliest if right thx :)

Answer:

Average speed = 1.3 m/s

Explanation:

Given that a student walks 160 m in 150 s. The student stops for 30 s and then walka 210 m farther in 140 s.

Neglect the time the student stops.

The total distance covered will be

Distance = 160 + 210

Distance = 370 m

The total time of the whole distance journey will be

Time = 150 + 140 = 290 s

The formula for speed is

Speed = distance/time

Speed = 370/290

Speed = 1.276 m/s

Therefore, the average speed is 1.3 m/s approximately

Answer:

The components of the object's velocity 3 seconds after launch are

\(v_x = 30\) m/s and \(v_y=-9.43\) m/s.

Explanation:

The given components of initial velocity are

\(v_x= 30\) m/s,

\(v_y= 20\) m/s.

Assuming the y-axis is along the direction of gravitational force, so, the velocity along the x-axis will remain unchanged.

So, the x-componebt of the velocity after 3 seconds, \(v_x = 30\) m/s.

Using the equation of motion along the y-direction, the final velocity, v, of a mass after time, t, having initial velocity, u is

v=u+at

In this case, \(u=y_y= 20 m/s, a=-9.81 m/s^2\) ( as upward direction is taken as positive)

So, at time, t=3s, the final velocity in y-direction is

\(v= 20+(-9.81)\times 3\)

\(\Rightarrow v=20-29.43\)

\(\Rightarrow v= -9.43 m/s\)

So, the y-component of the final velocity is 9.43 m/s in the downward direction.

Hence, the components of the object's velocity 3 seconds after launch are

\(v_x = 30 m/s\) and \(v_y=-9.43 m/s\).

The final vertical velocity of the object after 3 seconds is 49.4 m/s.

The final horizontal velocity of the object is 30 m/s.

The given parameters;

The final vertical velocity of the object after 3 seconds is calculated as follows;

\(v_f_y = v_0_y + gt\\\\v_f_y = 20 + 3(9.8)\\\\v_f_y = 49.4 \ m/s\)

The final horizontal velocity of the object is the same as the initial horizontal velocity because horizontal motion is not affected by gravity.

\(v_f_x = v_0_x = 30 \ m/s\)

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The reading on the scale is equal to the weight of the student which is 646.8 N.

The given parameters;

The reading on the scale is determined by applying Newton's second law of motion as follows;

\(R = ma+ mg\\\\R = m(a + g)\\\\R = m(0 + g)\\\\R = mg\)

The student is at rest and not accelerating, a =0

\(R = 66 \times 9.8\\\\R = 646.8 \ N\)

Thus, the reading on the scale is equal to the weight of the student which is 646.8 N.

The complete question is below:

A 66 kg student stands on a very light, rigid board that rests on a bathroom scale at each end as shown in (Figure 1). what is the reading on the scale?

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Answer:

Explanation:

For this one I'd say D. Placing data into tables, charts, and graphs is the easiest way for scientists to quickly sort their dat...

the force that the winning player exerts on the ground to move forward is equal to their mass times acceleration. The explanation is as follows:When an object is in motion, the force applied to it is equal to the object's mass multiplied by its acceleration.

The same principle applies to the winning player who exerts force on the ground to move forward.When a player moves forward while playing a game, he applies force to the ground, and the ground applies an equal and opposite force to the player. The player's mass plus equipment equals 106 kg. This is the force that the ground exerts on the player to move forward,

which can be represented as:F = maWhere F is the force applied, m is the mass of the player plus equipment, and a is the acceleration of the player. The force that the player applies to the ground is the same as the force that the ground applies to the player. Therefore, the force that the winning player exerts on the ground to move forward is equal to their mass times acceleration.

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