(c) __________ ___________ The Horse in Motion . (c) __________________ _______________________famous series of photographs documenting a horse in motion were made possible by a number of cameras placed side by side as a horse broke each wire.

Answer:

Acceleration (b) not sure tho

Explanation:

Answer:

Vf = final velocity = 1.96 [m/s]

Explanation:

To solve this problem we must use the following equation of kinematics.

\(v_{f}^{2}=v_{o}^{2}-2*g*x\)

where:

Vf = final velocity [m/s]

Vo = initial velocity = 9.98 [m/s]

g = gravity acceleration = 9.81 [m/s²]

x = vertical distance [m]

\(v_{f}^{2}=(9.98)^{2}-2*9.81*4.88\\v_{f}^{2} = 99.6-95.74\\v_{f}=\sqrt{3.8544}\\v_{f}=1.96[m/s]\)

Note: The negative sign of the gravity acceleration means that the gravity acceleration is pointing in the opposite direction of the movement.

Answer:

f = 295.06 Hz

Explanation:

Este es un típico ejercicio de efecto doppler donde tenemos una fuente emisora de una frecuencia.

En este caso, vemos una ambulancia que se está desplazando a cierta velocidad emitiendo una frecuencia particular. Un observador que está en la calle decide alejarse, corriendo a una velocidad, que obviamente es menor que la de la ambulancia, pero el caso es que se está alejando de la fuente emisora del sonido, en este caso de la ambulancia.

Como se están alejando, podemos usar la siguiente expresión:

f = (v - v₀ / v) * f₀

Donde:

f: frecuencia percibida por la persona.

v: velocidad de la ambulancia

v₀: velocidad de la persona

f₀: frecuencia emitida por la ambulancia.

Teniendo todos esos valores, solo debemos reemplazar en la expresión:

f = (34 - 1 / 34) * 304

f = (33/34) * 304

Espero te ayude

The speed of the  Toyota Corolla would have  been 143.9 mph.

The acceleration of the F-15 can be calculated as follows:

Acceleration = Velocity Change / Time = (Take-off Speed) / Time

where;

Take-off Speed = √(2dg /t²)

Take-off Speed = √(2 x  (270 ft)  x 32.2 ft/s² / (2 s)²)

T  = √(17496) = 131.6 ft/s

Acceleration = Velocity Change / Time

= (131.6 ft/s) / (2 s) = 65.8 ft/s²

We can use the same acceleration to launch the Toyota Corolla, and calculate its final velocity:

Final Velocity = Initial Velocity + Acceleration x Time

where;

Final Velocity = 0 + (65.8 ft/s²) * (2 s) = 131.6 ft/s

Finally, we can convert the velocity from feet per second to miles per hour:

Velocity (mph) = Velocity (ft/s) x (1 hour/3600 s) x (5280 ft/mile)

= 131.6 ft/s x  (1 hour/3600 s)  x (5280 ft/mile)

= 143.9 mph

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Newton's Law of Cooling is described by the first-order linear differential equation dt/dT = k(T - Ts), where T(t) is the temperature of the object at time t, Ts is the surrounding environmental temperature, and k is the constant of proportionality.

The temperature of an object, governed by Newton's Law of Cooling

(i) To find the temperature of the object as a function of time, we first solve the differential equation dt/dT = k(T - Ts). This is a separable differential equation, and the solution can be obtained by rearranging and integrating:

dt/dT = k(T - Ts)

dt = k(T - Ts) dT

∫ dt = ∫ k(T - Ts) dT

t = k * ∫ (T - Ts) dT

t = k * (T^2/2 - Ts*T) + C

Now, we apply the initial condition T(0) = T0. At t=0, the temperature of the object is T0:

T(0) = T0

k * (\(T0^2\)/2 - Ts*T0) + C = T0

C = T0 - k * (\(T0^2\)/2 - Ts*T0)

C = T0 - k * (\(T0^2\)- 2 * Ts * T0) / 2

C = T0 - k * (\(T0^2\) - 2 * Ts * T0) / 2

So, the equation becomes:

t = k * (\(T^2\)/2 - Ts*T) + (T0 - k * (\(T0^2\)- 2 * Ts * T0) / 2)

(ii) Now, we can find the temperature of the object after 5 minutes (t = 5 minutes). We'll use the initial condition T(0) = T0 and the formula obtained in part (i):

t = 5 minutes = 5/60 hours = 1/12 hours

T(t) = Ts + (T0 - Ts) * exp(-kt)

T(1/12) = Ts + (T0 - Ts) * exp(-k * (1/12))

This equation gives us the temperature of the object after 5 minutes, considering the given initial temperature T0 and the surrounding environmental temperature Ts.

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Answer:

b

Explanation:

Bears hibernate in the winter

Answer:

Ans

Explanation:

Length*Breadth

oK

That's it

Answer:

Length×breadth

Explanation:

L × B hope it help youシ︎

Answer:

Answer:

Option B

Explanation:

Option B talks about how the frequency of the wave increases the shorter it's wavelengths

Answer:

b

Explanation

B: As the frequency of a wave increases, the shorter its wavelength is.

The velocity of the rode at the end of the time 4.33 seconds is 42.434 m/s.

Velocity is the rate of change of displacement.

To calculate the velocity of the, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the velocity at the end of the time is 42.434 m/s.

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ANSWER:

polarized

STEP-BY-STEP EXPLANATION:

When negative charges are concentrated at one end of an object that is made of a conductive material, this happens when the object is polarized.

Frequency and wavelength are inversely proportional to each other. The wave with the greatest frequency has the shortest wavelength. Twice the frequency means one-half the wavelength. For this reason, the wavelength ratio is the inverse of the frequency ratio.

Answer:

The final velocity v₂ is 45 m/s

The highest point reached by the rocket is 101.25 m

The total time spent in air by the rocket is 7.5 s

Explanation:

Given;

initial velocity of the rocket, v₁ = 0

final velocity of the rocket, v₂ = ?

upward acceleration of the rocket, a = 15 m/s²

time of acceleration, t = 3 s

The final velocity is given by;

v₂ = v₁ + at

v₂ = 0 + (15 x 3)

v₂ = 45 m/s

The highest point reached by the rocket is given by;

v² = u² + 2ah

where;

u is the initial velocity of rocket when it started decelerating.

thus, u = v₂

v is the final velocity of the rocket at its highest point = 0

0 = v₂² + 2ah

0 = (45)² + (2 x -10 )h

0 = 2025 - 20h

20h = 2025

h = 2025 / 20

h = 101.25 m

Time taken for the rocket to reach its highest point is given by;

h = ut + ¹/₂at²

101.25 = 45t + ¹/₂(-10)t²

101.25 = 45t - 5t²

5t² - 45t + 101.25 = 0

t² - 9t + 20.25 = 0

t = 4.5 s

The total time spent in air by the rocket is given by;

T = upward time + downward time

T = 3 s + 4.5 s

T = 7.5 s

Answer:

v = 0.363 m/s

Explanation:

Given that,

The table is 0.55m tall and the tennis ball lands 0.12m away from the table.

Here, u = 0 (at rest) for initial vertical velocity as it rolls off the edge of a table.

Let t is the time to fall from the vertical height. So,

\(h=ut+\dfrac{1}{2}at^2\\\\t=\sqrt{\dfrac{2h}{g}} \\\\t=\sqrt{\dfrac{2\times 0.55}{9.8}} \\\\t=0.33\ s\)

It can be assumed to find the initial horizontal velocity of the tennis ball. It can be given by :

\(v_x=\dfrac{x}{t}\\\\v_x=\dfrac{0.12}{0.33}\\\\v_x=0.363\ m/s\)

Hence, the initial horizontal velocity is 0.363 m/s.

If you have charges that were made against you but were dropped by the person who made them but are still on record, you can still take steps to address the situation. It is important to note that having charges on your record can have negative effects on your life, such as hindering your ability to secure employment and housing.

To address this situation, you may need to seek legal advice or the assistance of a criminal defense attorney. They will be able to guide you through the process of getting the charges removed from your record, or having them expunged. This will involve filing a petition to the court, providing evidence that the charges were dropped, and demonstrating that you meet the eligibility criteria for expungement or record sealing

. The process may vary depending on your location and the type of charges you faced, so it is important to seek guidance from a legal professional.To summarize, if you have charges that were made against you but were dropped by the person who made them but are still on record, you can seek legal advice or the assistance of a criminal defense attorney to have the charges removed from your record through a petition to the court.

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Answer:

6

Explanation:

because the numbers before the decimal point are whole numbers so that would mean the 4 & 0 before the points the ones and tens place. and anything behind a decimal goes in order as usual ones,tens,hundredths, thousandths, ten thousandths, and so on. so that what makes the 6 be in the hundredths place.

Answer:

True

Explanation:

Gas always live in free state but some gas is not . We can said that mostly gas volume can be changeable during disturbing by environment situation.

To choose the correct box plot, verify each of the options and make sure all the values in the plot match the values provided.

In a box plot, this value is represented by a vertical line located in the middle of the graph.

The maximum is the value located on the farthest right, while the minimum is located on the farthest left.

Divide the graph into 4 and analyze how much each quartile represents.

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Answer:

To choose the correct box plot, verify each of the options and make sure all the values in the plot match the values provided.

Explanation:

As the velocity of a stream carrying a mixture of particles decreases, the heaviest particles will most likely be deposited first. This phenomenon is known as sedimentation.

The process of sedimentation separates particles of different sizes and densities from a mixture by allowing them to settle at different rates due to gravity. The heavier particles settle faster than lighter ones. Therefore, they are the first to be deposited.Sedimentation can occur naturally or artificially. For example, in a river, sedimentation can occur naturally due to changes in water flow and velocity. Artificial sedimentation can be used in water treatment plants to remove impurities from water

The heaviest particles will most likely be deposited first as the velocity of a stream carrying a mixture of particles decreases.Explanation: This is due to the process of sedimentation, which separates particles of different sizes and densities from a mixture by allowing them to settle at different rates due to gravity. The heavier particles settle faster than lighter ones, and hence they are the first to be deposited.

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The marble travel from the top of the ramp is  56.25 m.

Ramp is can be understand in physics, such as the inclined planes, also referred to as ramps . That means,ramp is a type of simple machine which manipulate the direction and magnitude of a force. It is very useful machine by which we can understand the problems in mechenics .

We are given that,

The marble rolls down from the ramp in time = t = 5s

Acceleration of the marble due to gravity = a = 4.5 m/s²

Therefore , for getting the distance (s) of the marble which travelled from the top of the ramp by using the equation of motion i.e. given as,

s = ut + (1/2) at²

Here the marble released from thew rest at the top of the ramp so that initial velocity u = 0 , therefore after putting the value above equation can be written as,

s = (1/2)× 4.5 m/s²×5s × 5s

s = 56.25 m

Hence, the marble travel from the top of the ramp 56.25 m after 5 seconds.

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An audience member covers her ears during a loud concert shows evidence that matter can reflect waves.

An audience member covers her ears during a loud concert is an event that provides evidence that matter can reflect waves because a sound is heard again and again due to the reflection of waves. This repetition of sound is due to the property of reflection of sound waves.

So we can conclude that an audience member covers her ears during a loud concert shows evidence that matter can reflect waves.

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Answer:

A laser beam bounces off a series of mirrors

Explanation:

It will take the 10.0 hp motor 5.18 seconds to lift the 2000 lb elevator a distance of 19.3 feet.

The time it will take a 10.0 hp motor to lift a 2000 lb elevator a distance of 19.3 feet can be determined using the formula for work, which is

Work = Force × Distance.

In this case, the force is the weight of the elevator, which is 2000 lbs, and the distance is 19.3 feet. Therefore, the work done is:

Work = Force × Distance = 2000 lbs × 19.3 feet = 38600 ft-lbs

To convert the work done to time, we use the formula for power, which is

Power = Work ÷ Time.

Here, the power of the motor is 10.0 hp, which is equivalent to 7457 watts.

Therefore, we can substitute the values we have into the formula to solve for time:

Power = Work ÷ Time7457 watts = 38600 ft-lbs ÷ TimeTime = 38600 ft-lbs ÷ 7457 watts = 5.18 seconds

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The time it would take a 10.0 hp motor to lift a 2000 lb elevator a distance of 19.3 feet would be 7.01 seconds. This is calculated using the conversions and the concept of power which is work done per unit time.

To calculate how many seconds it will take a 10.0 hp motor to lift a 2000 lb elevator a distance of 19.3 feet, we need to understand the relationship between power, force, distance and time. Power (P) is the rate at which work is done, or energy is transferred. In this case, we can use the formula P = work/time. The work done in lifting the elevator can be found by multiplying the force (weight of the elevator) by the distance.

First, convert the power from horsepower to watts: 1 hp = 745.7 watts, so 10.0 hp = 7457 watts. Secondly, convert the weight of the elevator to Newtons (N), knowing that 1 lb is approximately equals to 4.448 N, thus 2000 lbs = 8896 N. Lastly, convert the distance from feet to meters: 1 foot = 0.3048 meters, therefore 19.3 feet = 5.88 meters.

The work done is therefore 8896 N * 5.88 m = 52303.68 Joules. Using the power formula P = work/time, we can rearrange to solve for time: time = work / power, thus the time taken is 52303.68J / 7457W = 7.01 seconds.

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Using the appropriate number of significant figures, the product of 2.856 x 0.45 is 1.3.

The correct answer to the product 2.856 x 0.45 is 1.2852. However, we must use the appropriate number of significant figures. The number with the least amount of significant figures in the product is 0.45, which has two significant figures. Therefore, the final answer should also have two significant figures.

To round to two significant figures, we look at the third significant figure. If it is 5 or greater, we round up the second significant figure. If it is less than 5, we keep the second significant figure as is. In this case, the third significant figure is 8, so we round up the second significant figure from 2 to 3.

Therefore, the final answer with the appropriate number of significant figures is 1.3.

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Answer:

Insulators is the correct answer

Explanation:

A few electrons make up the insulators, which allow for very little electrical current to flow. While the conductors are excellent electrical conductors. Rubber is a poor insulator compared to metal, which is a very good conductor.

The insulator is a material that consists of a few electrons and they permit very little flow of electrical current. While the conductors are very good conductors of electricity. Metal is a very good conductor while rubber is a poor insulator.

Hence the answer is conductors possess free electrons, while insulators have few free electrons

The conductor has thus been used for wiring purposes and can be effectively used made to use energy; The insulator is a poor absorber and thus are unable to transfer energy.

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The given statement "a magnet at rest inside a coil of wire will induce a current" is true. Option A. As the magnet is moved in and out of the coil, an electric current is induced.

Faraday's law of electromagnetic induction states that if there is a change in magnetic flux linkage through a coil of wire, an emf is induced in the coil. This emf induces an electric current if a circuit is present around the coil. Thus, a magnet at rest inside a coil of wire will induce a current. As the magnet is moved in and out of the coil, the magnetic field around the coil changes, which induces an emf in the coil. This emf causes a current to flow in the coil if there is a closed circuit around it. Answer option A.

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Answer:

slow

Explanation

because it weighs 1,200 kg and has a velocity of 30 m/s west. with all the friction causing it to become slower.

Answer:

The net force is equal to the sum of the two forces

Explanation:

Forces Acting in the Same Direction

If two forces act on an object in the same direction, the net force is equal to the sum of the two forces. This always results in a stronger force than either of the individual forces alone.

1.When the non-sticky sides of the two pieces of tape recording are brought together, they repel each other. This is due to the buildup of electric charge on the  face of the tape recording when it was  hulled off from the flat  face.

2.The pieces didn't change when the tape recording was from different sets.  When two top or two  nethermost pieces of tape recording are brought together, they repel each other.

3.When a top and  nethermost piece of tape recording are brought together, they attract each other. This is  harmonious with the actuality of only two types of charge, positive and negative. The results support the fact that the top and  nethermost pieces of tape recording had  contrary charges.  The top tape recording attracted the arm hair, while the bottom tape recording didn't attract the arm hair. Arm hair is  generally neutral, but it can be  concentrated by the electric field of the charged tape recording.

4.The top tape recording is negatively charged, and it  concentrated the arm hair, which has a positive charge. This redounded in  magnet between the top tape recording and the arm hair.  The pieces of tape recording labeled" T1" and" B2" are  appreciatively charged, while the pieces of tape recording labeled" B1" and" T2" are negatively charged. This can be determined from the  compliances.

5.When the  appreciatively charged tape recording was brought  near to a negatively charged tape recording, they attracted each other. When two  appreciatively charged  videotapes or two negatively charged  videotapes were brought  near together, they repelled each other.  Like charges repel each other,  contrary charges attract each other, and neutral bodies aren't affected by electric fields.  

6.The force of  magnet or aversion between the pieces of tape recording increases as they get  near together and decreases as they move  further  piecemeal. This change happens gradationally, not  snappily.      

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Answer: Yes I am alive.

From the information provided and the calculations, the energy of the drop is 1.51 eV

The Rydberg formula is used to obtain the energy of a photon or the wavelength of a photon.

Thus;

1/λ = 1.097 * 10^7 (1/3^2 - 1/5^2)

1/λ = 1.097 * 10^7(0.11 - 0.04)

λ = 1.3 * 10^-6 m

Since;

E = hc/λ

E = 6.6 * 10^-34 * 3 * 10^8/1.3 * 10^-6

E = 1.51 * 10^-19 J or 1.51 eV

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Answer:

0.97eV

Explanation:

The energy emitted during n=5 is 0.54 eV

The energy emitted during n=3 is 1.51 eV
(This information is on the Physics Reference Table 2006 edition)

We find the change in the energy level which is:  

1.51eV-0.54eV = 0.97eV

Therefore the energy emitted by the photon is 0.97eV.