object 1 and 2 are identical. object 1 is dropped from 40 m high, while object 2 is dropped from 10 m high. ignoring air resistance, when they hit the ground the kinetic energy of object 1 is:

When setting up the sixth harmonic, its resonant wavelength will be longer than that of the seventh harmonic.

This is because as the harmonic number increases, the wavelength decreases and the frequency increases. Therefore, the seventh harmonic has a higher frequency and shorter wavelength than the sixth harmonic.

How does wavelength change with harmonics?

For the first harmonic, the length of the string is equivalent to one-half of a wavelength. If the string is 1.2 meters long, then one-half of a wavelength is 1.2 meters long. The full wavelength is 2.4 meters long. For the second harmonic, the length of the string is equivalent to a full wavelength.

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Answer:

The bicyclist goes at 5 m/s

Explanation:

Motion With Constant Acceleration

It's a type of motion in which the velocity of an object changes uniformly in time.

The equation that rules the change of velocities is:

\(v_f=v_o+at\)

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

It's given a bicyclist is traveling at v0=+25 m/s and decelerates at \(a=-4\ m/s^2\). We are required to calculate the speed after t=5 seconds.

Applying the formula:

\(v_f=25+(-4)*5\)

\(v_f=25-20=5\)

\(v_f=5\ m/s\)

The bicyclist goes at 5 m/s

The second stone hits the ground exactly one second after the first.

The distance traveled by each stone down the cliff is calculated using second kinematic equation;

\(h = v_0_yt + \frac{1}{2} gt^2\)

where;

\(h = \frac{1}{2} gt^2\)

The time taken by the first stone to hit the ground is calculated as;

\(t_1 = \sqrt{\frac{2h}{g} }\)

When compared to the first stone, the time taken by the second stone to hit the ground after 1 second it was released is calculated as

\(t_2 = \sqrt{\frac{2h}{g} } + 1\)

\(t_2 = t_1 + 1\)

Thus, we can conclude that the second stone hits the ground exactly one second after the first.

"Your question is not complete, it seems be missing the following information;"

A. The second stone hits the ground exactly one second after the first.

B. The second stone hits the ground less than one second after the first

C. The second stone hits the ground more than one second after the first.

D. The second stone hits the ground at the same time as the first.

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Answer:

They contain iron.

Explanation:

Iron is made of metal and magnets attract to metal Iron.

Yes, it is commonly attributed to Albert Einstein that he said, "Compound interest is the eighth wonder of the world. He who understands it, earns it... he who doesn't... pays it."

However, there is no direct evidence that he actually said this, and some sources suggest that the quote may have been misattributed to him. Nonetheless, the quote has become popular in the world of finance and investing as a way to emphasize the power of compound interest in generating wealth over time.

Compound interest refers to the process of earning interest on both the initial amount of an investment and on the accumulated interest. This means that as time goes on, the amount of interest earned can grow exponentially, leading to significant gains in the value of an investment over the long term. This is why compound interest is often referred to as the "eighth wonder of the world" as it can have a dramatic impact on financial outcomes.

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Answer:

Yes, in case of uniform velocity

Explanation:

This is the case of uniform velocity. If a body covers equal displacement in equal intervals of time, then the velocity of a body is said to be ‘Uniform Velocity’. It meas that the velocity of a body remains constant during the motion and it does not change.

Since, acceleration is defined as the rate of change of velocity.

Therefore, if there is no change in velocity or in other words the change in velocity is zero, then the acceleration is also zero.

a = ΔV/t = 0/t

a = 0 m/s²

So, the acceleration of the body is 0 m/s², but it has a uniform velocity

Hence, it is possible for an object that, object with zero acceleration have velocity, which is the case case of uniform velocity.

The force F1 is equal and opposite to the downward force thus, F1 is equal to 60 N. The force F2 is inclined to 30 ° from leftward force and it is equal to 38.97 N in magnitude.

Force is an external agent acting on a body to deform it or to change its state of motion or rest. Force is a vector quantity and it is characterised by its magnitude and direction.

If two forces acting on a body from the same directions, then the net force will be the sum of these two forces. If they are acting from opposite directions, they will cancel each other in magnitude.

The force F1 is equal and opposite to the force acting downward. Thus its magnitude is 60 N. The force F2 is inclined to 30 ° from horizontal direction.

F2 = 45 cos 30 = 38.9 N.

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When a ball is rolling down an inclined plane without slipping, the force responsible for causing its rotation is the frictional force. This force acts between the surface of the ball and the surface of the inclined plane, in the opposite direction to the direction of the ball's motion.

Frictional force causes a torque on the ball, which leads to its rotation. It is important to note that the frictional force acts only when the ball is rolling without slipping. If the ball is slipping, then the force responsible for its rotation would be the external force applied to the ball.

In summary, when a ball is rolling down an inclined plane without slipping, the frictional force is responsible for its rotation.
If a ball is rolling down an inclined plane without slipping, the force responsible for causing its rotation is the frictional force. When the ball rolls down the inclined plane, gravity pulls it downwards, which results in a component of force parallel to the inclined plane. This force tries to make the ball slide down the incline.

However, if there is sufficient friction between the ball and the surface, the frictional force acts in the direction opposite to the motion of the ball, preventing it from slipping. As the ball rolls, the point of contact between the ball and the surface momentarily comes to rest, which allows the frictional force to generate torque. This torque causes the ball to rotate around its center of mass, maintaining its rolling motion without slipping.

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The harmonics are sometimes referred to as the overtone series.

The frequencies that are capable of forming standing waves on a string attached at both ends from the fundamental frequency on up are called harmonics. In music, harmonics are overtones that accompany a sound wave's fundamental frequency.

These waves are at frequencies that are whole number multiples of the fundamental frequency (f₀).

These waves are at frequencies that are whole number multiples of the fundamental frequency (f₀).

2f₀ is twice f₀, 3f₀ is three times f₀, and so on.

These harmonics exist in a series of discrete frequencies that are proportional to the frequency of the fundamental pitch. Therefore, the harmonics are sometimes referred to as the overtone series.

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In Rutherford's famous set of experiments, the fact that some alpha particles were deflected at large angles indicated that the atom contains a dense, positively charged nucleus.

Rutherford conducted experiments where he bombarded a thin gold foil with alpha particles. According to the prevailing model at the time, the Thomson model, it was believed that the positive charge in an atom was spread uniformly throughout the atom, much like plum pudding.

However, Rutherford's observations revealed that some alpha particles experienced significant deflections and even bounced back at large angles. This unexpected result could not be explained by the Thomson model.

Rutherford proposed a new atomic model known as the nuclear model, suggesting that the atom consists of a tiny, dense, positively charged nucleus at the center and the majority of the atom is empty space. This explained the deflection of alpha particles, as they were repelled or deflected by the positive charge concentrated in the nucleus.

The deflection of alpha particles at large angles indicated the presence of a compact and positively charged nucleus within the atom, leading to a fundamental revision of the understanding of atomic structure.

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Answer:

C. Cables transmit infrared waves over longer distances.

Explanation:

A.pex

Answer:

The answer is C.Cables transmit infrared waves over longer distances.

Explanation:

I took AP EX quiz.

When the gold cube is immersed in mercury, the tension in the string in Newtons is 3.142N.

Tension is the force acting on the linear object like string, chain or rope due to pulling.

Volume of gold V = mass / density

V = 1.18 /19.3x 10³ =61.1 x 10⁻⁶ m³

Tension in the string after immersing will be

T = [ρ(Gold)  -ρ(Hg)] g. V

T =[ 19.3x 10³ - 13.6 x 10³] x 9.81 x 61.1 x 10⁻⁶

T =3.416 N
Thus, the tension in the string is 3.42 N.

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As ice melts into water, kinetic energy is being added to the particles. This movement causes them to be 'excited' and causes the break in the bonds which hold them together as a solid. This also results in a change of state from solid to liquid.

kinetic energy can be described as a form of energy that an object or a particle possess by reason of its motion.

Kinetic energy is a property of a moving object or particle and that depends on the motion and mass of the object involved in the motion.

The change in state of an object is due to the change in the average kinetic energy of the particles. This average kinetic energy is proportional to the temperature of those particles.

The reason is that heat is a form of energy and if you add heat energy to ice you "excite" the water molecules which in turn breaks the interactions in the lattice structure and forming weaker, looser hydrogen-bonding interactions.

In conclusion, the change in state of an object is due to the change in the average kinetic energy of those particles.

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Answer:

\(m_B > m_A\)

the mass of body B must be greater than the mass of body A

Explanation:

Newton's second law establishes a linear relationship between the force, the mass of the body and its acceleration

        F = m a

        a = F / m

Let's analyze this expression tells us that the force is of equal magnitude for the two bodies, but body A goes faster than body B, this implies that it has more relationships

         a_A > a_B

         \(\frac{F}{m_A} > \frac{F}{m_B}\)

         \(m_B > m_A\)

Therefore, for this to happen, the mass of body B must be greater than the mass of body A

Explanation:

K = 5kg\((2 m/s)^{2}\)/2 = 10 J

Answer:

51 miles/hour

Explanation:

Talia is on a road trip with some friends. in the first 2 hours, they travel 100 miles. then they hit traffic and go only 30 miles in the next hour. the last hour of their trip, they drive 75 miles. calculate the average speed of talia’s car during the trip. give your answer to the nearest whole number.

The average speed would be 51 miles/hour.

The average speed of a moving object is defined as the total distance traveled relative to the total time taken fro the journey. Mathematically, it is given as:

  total distance traveled/total time taken.

In this case;

Total distance traveled = 100 + 30 + 75 = 205 miles

Total time taken = 2 + 1 + 1 = 4 hours

Therefore;

Average speed = 205/4 = 51.25 miles/hour

To the nearest whole number = 51 miles/hour

Answer:

direction of the afar and somali people

Answer:

1. states

2. kinetic theory

3.particles cqlled atoms

4.motion

5.collide

thats all I remember

Answer:

the index of refraction of the coating is 1.33  

Explanation:

Given the data in the question;

refraction index of  interior portion of the rod η\(_{interior\) = 1.55

angle of incidence θ\(_i\) = 59.5°

From Snell's law, we know that;

η\(_{interior\) × sinθ\(_i\)  = η\(_{coating\) × sinθ\(_r\)

where η\(_{interior\)  is the index of refraction of the rod ( material 1 )

θ\(_i\)  is the angle of incidence

η\(_{coating\) is the index of refraction in outer coating ( material 2 )

θ\(_r\) is the angle of refraction

so we substitute our values into the equation;

η\(_{interior\) × sinθ\(_i\)  = η\(_{coating\) × sinθ\(_r\)

1.55 × sin( 59.5° )  = η\(_{coating\) × sin( 90° )

1.55 × 0.861629  = η\(_{coating\) × 1

1.3355 = η\(_{coating\) × 1

η\(_{coating\) = 1.33   { 2 decimal places }

Therefore, the index of refraction of the coating is 1.33  

Answer:

It would quadruple

Explanation:

Have a great day!

Answer:

by a lot

Explanation:

Not very helpful lol im really just trying to get points to ask questions

Approximately 1825 kilowatt-hours of electrical energy are consumed in one year by using ten 100-watt lightbulbs for five hours per day.

To calculate the kilowatt-hours of electrical energy consumed in one year by using ten 100-watt light bulbs for five hours per day, we need to first calculate the total watt-hours consumed in one day and then multiply it by 365 (days in a year).

Total wattage of ten 100-watt light bulbs = 10 x 100 = 1000 watts
Watt-hours consumed in one day = 1000 watts x 5 hours = 5000 watt-hours
Kilowatt-hours consumed in one day = 5000 watt-hours / 1000 = 5 kWh
Kilowatt-hours consumed in one year = 5 kWh x 365 = 1825 kWh

Therefore, approximately 1825 kilowatt-hours of electrical energy are consumed in one year by using ten 100-watt lightbulbs for five hours per day.

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Answer:

B) Caused by the Sun

Explanation:

If you look at a picture of a solar system, you will see the sun in the middle. The sun is the powerhouse of the solar system. So that means that the sun is the biggest star and can provide enough light to reach earth and keep it lit.

The meaning of the word solar in the article "Fire Up the Sun" is caused by the sun so, option B is correct.

The sun is the star that the earth and the other planets in the solar system orbit. With more than 99 percent of the system's total mass, it is the dominant body. A portion of the tremendous quantity of energy coming from the Sun powers the light and heat that keep Earth habitable for life.

The sun is in the center of a solar system if you look at a picture of one. The solar system's center of gravity is the sun. This indicates that the sun is the largest star and that it can illuminate the earth and keep it bright.

The Sun is a G2 V star, which means that it has a surface temperature of roughly 5,800 kelvins (K), making it the second-hottest star in the yellow G class.

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Answer:

D

Explanation:

because it is.

The tangent of the angle at which the items slide equals the coefficient of static friction. The measurement of k can be done in a similar way. To accomplish it, push the upper object while angling it upward. The tangent of that angle equals k when the upper object slides along at a constant speed.

Why is the coefficient of static friction determined using an incline?

By calculating the angle at which the force of gravity overcomes the static friction, you can utilize an item that is inclined to calculate the static coefficient of friction.

How can you tell which way static friction is prevailing?

Static friction pushes in the direction you're trying to travel when you walk (see Figure 2 below). In the absence of friction, the foot would slip backwards as it presses on the ground (like walking on ice).

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Answer:

31.404 seconds

Explanation:

To answer this equation, SUVAT is your best option utilizing and rearranging the known values to solve for the unknown.

here we have the values for

s=895

u=22

v=35

t= the unknown value

in this instant the equation s=0.5 x (u+v)t is the best equation to use

so we sub in the known values

895=0.5 x (22+35)t

rearrange to solve for t

895=28.5t

895/28.5=t

t=31.404 seconds (rounded to 3 decimal places)

Answer:

Explanation: you can choose B or C but i would choose C

The net force on the object on which four forces are acting on is 20 N to the right.

The net force acting on an object is the vector sum of all the forces that act upon an object.

Net force gives the resultant force acting on a given object at given period of time.

Mathematically, the net force on an object can be obtained by applying Newton's second law of motion as follows.

F(net) = ma

where;

m is the mass of the object

a is the acceleration of the object

The net vertical force on the object is calculated as follows;

F(upward) = 100 N - 100 N = 0 N

The net horizontal force on the object is calculated as follows;

F(horizontal) = 50 N - 30 N = 20 N

Thus, the net force on the object is acting towards the right of the object.

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Answer:

the one that is clicked in the photo I think is right

Answer:

Explanation:

To find how long it took we use the formula

\(t = \frac{d}{v} \\ \)

d is the distance

v is the velocity

From the question we have

\(t = \frac{30}{15} \\ \)

We have the final answer as

Hope this helps you