4.
A person in a wheelchair exerts a force of 25 N to go up a ramp that is 10 m long
The weight of the person and wheelchair is 60 N and the height of the ramp
is 3 m.

Answer:

Speed of sound ways in railroad = 6,135.8 m/s

Explanation:

Given:

Distance cover by sound wave = 2,350 meter

Time taken by sound wave to cover distance = 0.383 seconds

Find:

Speed of sound ways in railroad

Computation:

Speed = Distance / Time

Speed of sound ways in railroad = Distance cover by sound wave / Time taken by sound wave to cover distance

Speed of sound ways in railroad = 2,350 / 0.383

Speed of sound ways in railroad = 6,135.77

Speed of sound ways in railroad = 6,135.8 m/s

The correct equation for the index of refraction is v_red/v_blue = n_blue/n_red.

The correct equation for the index of refraction (n) in a medium, such as glass, is given by Snell's law:

n = c/v,

where c is the speed of light in a vacuum and v is the speed of light in the medium. According to the equation, the index of refraction is the ratio of the speed of light in a vacuum to the speed of light in the medium.

In the case of the given information, we have the respective indices of refraction for blue light (n_blue = 1.4636) and red light (n_red = 1.4561) in glass. Using Snell's law, we can set up the following equations:

n_blue = c/v_blue,

n_red = c/v_red.

Dividing these equations, we get:

n_blue/n_red = (c/v_blue) / (c/v_red) = v_red/v_blue.

We can rearrange this equation to solve for the ratio of the speeds of light in glass for blue and red light:

v_red/v_blue = n_blue/n_red.

Therefore, the correct equation for the index of refraction is v_red/v_blue = n_blue/n_red.

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By ideal gas approximation, the mass of the helium in the tire is 0.465 grams.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles of gas which represents mass, R is the ideal gas constant (0.0821 L.atm/mol.K) and T is temperature.

From the question above, we know that

V = 365 mL = 0.365 L

P = 7.8 atm

T = 25⁰ C = 298 K

Mr = 4

By using the equation of ideal gas, we get the mass

P . V = n . R . T

7.8 . 0.365 = gr / Mr . 0.0821 . 298

7.8 . 0.365 = gr / 4 . 0.0821 . 298

gr = 0.465 grams

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The collecting ducts of the renal tubules drain into the renal pelvis, which is a funnel-shaped structure located at the center of the kidney.

From there, the urine travels through the ureter to the bladder for storage until it is eliminated from the body through urination. The funnel-shaped, dilated portion of the ureter in the kidney is known as the renal pelvis or pelvis of the kidney. It is created by the large calyces coming together, and it serves as a conduit for urine to move from the major calyces to the ureter. It has a mucous membrane, transitional epithelium covering it, and a lamina propria of loose to dense connective tissue underneath. Along with the other elements of the renal sinus, the renal pelvis is located there.

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Answer: A.

current (thumb) to magnetic field (fingers)

Answer:

A. current (thumb) to magnetic field (fingers)

Explanation:

According to the Right-Hand Thumb rule, if we are holding a current- carrying straight conductor in our right hand such that the thumb points toward the direction of current, then the fingers will wrap around the conductor in the direction of the field lines of the magnetic field.

Hope it helps.

If you have any query, feel free to ask.

Answer:

vector quantity have both magnitude and direction but scalar quantities have only magnitude

The final temperature of the given mass of water at the initial temperature is 45.8 ⁰C.

The change in temperature of the water is calculated as follows;

Q  = mcΔθ

Δθ = Q/mc

where;

Δθ = (10,000)/(0.1 x 4200)

Δθ = 23.8

T2 - T1 = 23.8

T2 = 23.8 + 22

T2 = 45.8 ⁰C

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Answer:

The free fall acceleration toward the sun at the distance of the earth's orbit is 9.8m/s^2

True, Robot behaviors that are repeated throughout a program are indeed good candidates to become functions.

Functions allow for modular and reusable code by encapsulating a set of instructions that perform a specific task. By defining a function for a repeated behavior, you can avoid duplicating code and improve the overall organization, readability, and maintainability of the program. When a behavior is encapsulated within a function, you can easily call the function whenever that behavior is required, rather than rewriting the same code multiple times. This not only reduces the chances of introducing errors but also simplifies program updates or modifications. If you need to make a change to the behavior, you only need to modify the function definition once, and the change will automatically apply to all the places where the function is called.

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Answer:

energy:

-the strength and vitality required for sustained physical or mental activity.

-power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines.

Explanation:

Answer:

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

Explanation:

Answer:

Below

Explanation:

Find distance vehicle travels during this acceleration

d = vo t + 1/2 a t^2    

   a = change in velocity / change in time = 17.9/9.6 = 1.86458 m/s^2

   vo = 0    ( it starts from rest )

then  d = 1/2 ( 1.86458)* 9.6^2 = 85.92  meters

Now divide by the tire circumference to get the number of revs

     85.92 m / ( .38 m * pi )/rev = ~  71.97 revs

Answer: 64.5 rev. ✅

Explanation: The diameter of the tire is 38cm and the car accelerates uniformly from rest to reach a speed of 17.9m/s in 9.6s. The distance covered by the tire can be calculated by using the formula: distance = speed x time.

The distance covered by the tire is 17.9 x 9.6 = 171.84 meters. But when we convert it centimeters it is 17184 cm

The distance covered by the tire is equal to the circumference of the tire, which is equal to 2πd (d is the diameter of the tire). So we can calculate the number of revolutions by dividing the distance covered by the tire by the circumference of the tire.

Number of revolutions = distance covered / Circumference of the tire = 17184/ (2 x π x (38/100)) = 64.5 ✅

The angle A using the appropriate sine or cosine law is 43.29 degrees.

To find angle A, we can use the cosine law, which states that $a^2 = b^2 + c^2 - 2bc \cos{A}$. We have $b=5.3$, $c=7$, and $a=8.2$, so we can plug in and solve for $\cos{A}$:$$8.2^2 = 5.3^2 + 7^2 - 2(5.3)(7) \cos{A}$$$$\cos{A} = \frac{8.2^2 - 5.3^2 - 7^2}{-2(5.3)(7)} = 0.509$$$$A = \cos^{-1}{(0.509)} \approx 43.29^\circ$$The length of side x using the appropriate sine X is 61.32 units.

We can use the sine law, which states that $\frac{a}{\sin{A}} = \frac{b}{\sin{B}} = \frac{c}{\sin{C}}$. We know that $A=101^\circ$ and $a=x$, so we can use the ratio $\frac{a}{\sin{A}}$ to solve for $x$:$$\frac{x}{\sin{101}} = \frac{c}{\sin{38}}$$$$x = \sin{101} \cdot \frac{c}{\sin{38}} \approx 61.32$$Therefore, the length of side x is approximately 61.32 units.

In geometry, the Cosine Decide says that the square of the length of any side of a given triangle is equivalent to the amount of the squares of the length of different sides short two times the result of the other different sides duplicated by the cosine of point included between them.

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System uses 8.0-cm-diameter circular plates separated by 0.95 cm. the space between the plates is filled with milk, which has the same dielectric constant as that of water, The capacitance of the system is C = 377 pF.

Capacitance is the capability of a material object or device to store electric charge. It is measured by the change in charge in response to a difference in electric potential, expressed as the ratio of those quantities.

Given

D = 8.0 cm = 0.08 m

d = 0.95 cm = 0.95*10⁻² m

k = 80.4 (dielectric constant of the milk)

V = 30000 V

C = ?

We can get the capacitance of the system applying the formula:

C = kε₀A/d

where

ε₀ = 8.854*10⁻¹² F/m

and A = π*D²/4 = π*(0.08 m)²/4

⇒ A = 0.00502655 m²

then

C = (80.4)*(8.854*10⁻¹² F/m)*(0.00502655 m²) / (0.95*10⁻² m)

⇒ C = 3.77*10⁻¹⁰ F = 377 pF

Therefore, the capacitance of the system is C = 3.77*10⁻¹⁰ F = 377 pF

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Answer:

Terms in this set (7) Which element forms more compounds than all the other elements combined? Carbon.

Explanation:

Hope its helps you ✌️

Both frequency and wavelength will change. We perceive an increase of frequency as the increased pitch that you described. As the frequency (pitch) increases, the wavelength becomes shorter according to the universal wave equation ( v=fλ ).

Answer: Don't worry I'm here to save u the answer is lithosphere (D) :D

Explanation: I have once done this question and got it right!

Answer:

yes

Explanation:

because you will be hydrated

Answer:

Its good because you can survive without food but you cant survive without water. Extra water can replace empty, sugary calories many people drink with meals.

Explanation:

Answer:

See explanation...

Explanation:

the kinetic energy of the moving tennis racket is converted (not transformed) to the kinetic energy of the tennis ball.

Since not much description is given here, I didn't include the potential energy of the tennis ball. But in normal cases, the kinetic energy of the tennis ball would be converted to potential energy of the ball, and it falls back down after some time (because of gravity) and slows down due to friction on earth- kinetic energy is converted to heat energy because of friction.

other types of energy are not stated since they can be negligible.

Answer:

10.21 m/s

Explanation:

∆x =( v ^2 sin(2θ))/ g

rearrange this to get

v=√Δx·(g÷ sin(2θ))

Plug it in

v=√10·(-9.8÷sin(2·35))

Solve

v=10.21

Answer:

im pretty sure it is C. Insulation

Explanation:

because it says reduced, and basically ur insulating the fire.

We may determine the shot's kinetic energy using the kinetic energy formula. The shot put has a kinetic energy of 162 joules.

We may get the kinetic energy of the shot put by using the equation KE = 1/2mv², where m is the object's mass and v is its velocity:

KE equals 1/2 * 4 kg * (9 m/s)².

KE = 1/(4 kg x 81 m²/s²)

KE equals 162 joules

The shot put has a kinetic energy of 162 joules.

Kinetic energy, which may be seen in the movement of an item or subatomic particle, is the energy of motion. Kinetic energy is present in every particle and moving object.

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The heat lost by water is equal to the heat gained by ice here. The heat lost from water for a temperature change of 25 to 10 degree Celsius is 12300 J.

Calorimetry is an analytical technique used to determine the heat energy absorbed or evolved by a system. The calorimetric equation relating the heat energy q with the mass m, specific heat c and the temperature difference ΔT is :

q = m c ΔT

Here, the heat energy gained by the dry ice is equal to the heat lost from water.

temperature difference for water = 25- 10 °C = 15°C

thus, 15°C is lost from water.

mass of water = 200 g

q =200 g × 4.12 J/°C g × 10°C = 12300 J

Therefore, the heat energy lost from water is 12300 J.

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Weather forecasts are made using barometers. An air pressure gauge, or barometer When the barometer reads "rising," the air pressure is rising; when it reads "falling," the air pressure is lowering.

Barometric pressure, to put it simply, is the measurement of air pressure in the atmosphere, more particularly, the measurement of the weight exerted by air molecules at a certain location on Earth.

barometer, a tool for calculating atmospheric pressure. A barometer may also be used to determine height since air pressure varies with elevation above or below sea level. Mercury and aneroid barometers are the two primary varieties.

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Answer:

rectilinear propagation of light

reflection of light

refraction of light

Answer:

The system of linear equations refers to the solution set of various linear equations.

A consistent system can either be dependent (both equations represent the same line) or independent. In an independent system, the lines intersect at exactly one point, so there is exactly one solution. A dependent system has an infinite number of solutions and  An inconsistent system has no solution, so no system of linear equations can have exactly two solutions.

Timbre refers to the characteristic quality of a sound that distinguishes it from other sounds of the same pitch and loudness. It is determined by the complex combination of frequencies that make up a sound, including the fundamental frequency and the harmonics, as well as other factors such as the envelope of the sound, its duration, and the way in which it is produced.

Timbre is what allows us to differentiate between different musical instruments playing the same note or to recognize different voices speaking the same words.

Noise, on the other hand, refers to an unwanted or unpleasant sound, typically characterized by a random or chaotic pattern of vibrations. Noise can be caused by a variety of sources, including machinery, traffic, construction, and human activity, and can interfere with communication, sleep, and other activities.

The range of audible frequencies for healthy young adults is typically between 20 Hz and 20,000 Hz, although this range can vary depending on individual factors such as age, gender, and exposure to loud sounds over time. As people age, their ability to hear higher frequencies may decline, and exposure to loud sounds can also damage the sensitive hair cells in the inner ear, leading to hearing loss.

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Answer:

In turn, the main factors affecting earthquake shaking intensity are earthquake depth, proximity to the fault, the underlying soil, and building characteristics—particularly height. Let's take a look at the latter two (soil and buildings) and how they interact.

The challenge in developing an accurate rating system for earthquakes is due to complicated relationship between variables such as magnitude and intensity of earthquake.

Earthquakes are associated with magnitude and intensity.

The challenge in developing an accurate rating system for earthquake is due to complicated relationship and dependency between the magnitude and intensity of the earthquake.

Thus, the challenge in developing an accurate rating system for earthquakes is due to complicated relationship between variables such as magnitude and intensity of earthquake.

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Answer:

I think it is 2m/s2

Explanation:

Have a great day:)

Answer: A

Explanation:

The statement its acceleration is positive from 0 seconds to 60 seconds about the object represented in the graph is TRUE (Option B).

Positive acceleration occurs when an object increases its velocity or speed in a measurement that includes not only velocity as vector but also direction (the same sense) in order to produce a movement as a positive value.

Therefore, with this data, we can see that positive acceleration refers to the increase of velocity in a given unit of time having the same direction during this process.

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