the density of mercury is 13.6 gram per centimetre cubic find the volume of 2720 grams of mercury in metres cubic​

Answer:

See below

Explanation:

No energy has been added to the system to make it swing higher than from where it was released....actually....some energy has been LOST in the system due to air friction, so the balloon will not swing QUITE as high as from where it was released.

The feature of sound that distinguishes between noise and music is the presence of regular and organized patterns in the sound waves. Music typically exhibits rhythmic patterns, melodic structures, and harmonious arrangements, whereas noise lacks these organized patterns.

Here are a few key distinctions:

1. Pitch: Music often consists of discernible pitches, where specific frequencies or combinations of frequencies create melodic and harmonic elements. In contrast, noise tends to lack a distinct pitch and may contain a random mixture of frequencies.

2. Rhythm: Music typically follows a rhythmic pattern with a regular beat and timing, providing a sense of structure and synchronization. Noise, on the other hand, lacks a consistent or intentional rhythmic pattern and may appear random or chaotic in terms of timing.

3. Melody and Harmony: Music commonly features melodic lines and harmonies created by intentional arrangements of tones and chords. These melodic and harmonic elements contribute to the aesthetic quality and organized structure of music. Noise generally lacks intentional melodic or harmonic patterns.

4. Subjective Perception: The subjective perception and interpretation of sound can also play a role in distinguishing between noise and music. Different individuals may have varying preferences or cultural contexts that influence their perception of what is considered noise or music.

It is important to note that the distinction between noise and music can be subjective to some extent, as certain genres or styles of music may incorporate unconventional or experimental elements that challenge traditional notions of musicality.

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The final kinetic energy of the rifle is about 3.48 times greater when firing the heavier bullet.

We can use the conservation of momentum to find the velocity of the rifle after the bullet is fired. Since the rifle is initially at rest, the total momentum before the bullet is fired is zero. After the bullet is fired, the total momentum is:

\(p = mvbullet + MVrifle\)

where m is the mass of the bullet, vbullet is its velocity, M is the mass of the rifle, and Vrifle is the velocity of the rifle after the bullet is fired. Since there are no horizontal external forces acting on the rifle-bullet system, the total momentum is conserved, so we have:

0 = mvbullet + MVrifle

Solving for Vrifle, we get:

\(Vrifle = -mvbullet/M\)

Note that the negative sign indicates that the rifle moves in the opposite direction of the bullet.

The kinetic energy of an object is given by:

\(K = (1/2)mv^2\)

where m is the mass of the object and v is its velocity. The ratio of the final kinetic energies of the bullet and rifle is:

\(Kbullet/Krifle = (1/2)mvbullet^2 / (1/2)MVrifle^2\)

Substituting the expression for Vrifle that we found above, we get:

\(Kbullet/Krifle = (m/M)(vbullet/Vrifle)^2\)

For the first bullet, we have m = 5.00 g = 0.005 kg and vbullet = 300 m/s. Substituting these values, we get:

Kbullet/Krifle = (0.005 kg / 3.00 kg) (300 m/s / (-0.005 kg / 3.00 kg))^2

Simplifying, we get:

Kbullet/Krifle = 0.0025

For the second bullet, we have m = 10.5 g = 0.0105 kg and vbullet = 300 m/s. Substituting these values, we get:

Kbullet/Krifle = (0.0105 kg / 3.00 kg) (300 m/s / (-0.0105 kg / 3.00 kg))^2

Simplifying, we get:

Kbullet/Krifle = 0.0087

Therefore, the ratio of the final kinetic energies of the bullet and rifle for the two cases is:

0.0087 / 0.0025 = 3.48

So the final kinetic energy of the rifle is about 3.48 times greater when firing the heavier bullet.

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The types of microscopes that reveals the surface features of small molecules is an atomic force microscope.

The Atomic Force Microscope (AFM) is useful for imaging the surface topography of living, soft materials in their natural settings. It can be used to examine the inherent elastic modulus and receptor-ligand interactions of cells and extracellular matrix, among other mechanical properties. SEM pictures can investigate surface features that are several tenths of a nanometer in size, but AFM resolution is less than 0.1 nm. As a result, AFM can discern objects on flat surfaces with molecular dimensions.

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The thermal equator connects all the points that have the highest annual mean temperatures compared to other locations at their longitude.

The thermal equator is an imaginary line that connects all the points that have the highest annual mean temperatures compared to other locations at their longitude. It is a product of the Earth's solar heating and the resulting global atmospheric circulation patterns.

The thermal equator generally lies slightly north of the geographical equator and shifts slightly north or south depending on the seasonal changes in solar heating. The thermal equator has implications for agriculture, as it defines the regions where crops that require high temperatures can be grown successfully.

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Answer:

C. Atoms

Explanation:

The basic unit of matter and the smallest, indivisible unit of a chemical element. It comprises a nucleus (neutrons + protons) that is surrounded by a cloud of electrons.

The student must maintain a minimum average speed of 70 km/h to arrive home no later than 5:00 PM.

To determine the minimum average speed the student must maintain to arrive home no later than 5:00 PM, we need to consider the total time available for the trip and the distance to be covered.

The student starts at 7:00 AM and wants to arrive home by 5:00 PM. This means she has a total of 10 hours available for the trip (from 7:00 AM to 5:00 PM).

The distance to be covered is 700 km.

To find the minimum average speed, we divide the total distance by the total time:

Minimum average speed = Total distance / Total time

Minimum average speed = 700 km / 10 hours

Minimum average speed = 70 km/h

Therefore, the student must maintain a minimum average speed of 70 km/h to arrive home no later than 5:00 PM.

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Answer: You could measure the baseball's mass, the distance the ball traveled to hit the window, and finally find the time it took for it to reach the window. With this information, we can calculate the velocity of the baseball, and then the kinetic energy using the formula KE=1/2mv^2.

Answer:

i would like some more explanation i dont understand the question enough

Explanation:

Answer:

Its D.

Explanation:

Answer:

8.803 s

(but this is only if it's a free fall, which we assume since we didn't get the mass of the hulk)

Given:

The length of the outdoor track is: l = 400 m

The time taken to complete one complete lap around the track is: t = 100 s

To find:

The average speed and the average velocity

Explanation:

The average speed of an object is defined as the total distance covered by an object divided by the total time it took to complete that distance. It is given as:

Here, d is the total distance covered by Carl and t is the total time he took to complete the total distance d.

Substituting the values in the above equation, we get:

Now, the average velocity of an object is defined as the displacement of an object divided by the total time it took to displace from its initial position.

As Carl runs one complete lap around an outdoor track, after one round he returns to his original initial position from where he had started running. Thus, the displacement D of the Carl will be zero.

Thus, D = 0 m

The average velocity V is calculated as:

Substituting the values in the above equation, we get:

Final answer:

Thus, the average speed of Carl is 4 m/s and his average velocity is 0 m/s.

The the time required to reach the bottom of the incline is calculated to be 6.77 s.

Displacement of the bar = 18.8 m

Angle of inclination θ = 8°

Coefficient of friction factor μk = 0.055

We have to find the time taken to reach the bottom.

We know that the formula for weight of the soap bar is given as,

Fg = mg sinθ

The frictional force acting on this soap bar is determined by,

Ff = μ mg cosθ

Let us determine the constant acceleration of the bar,

F = Fg - Ff

Fg - Ff = ma(mg sinθ) - μ mg cosθ = m a

a = g sinθ - μg cosθ

where,

Fg is force imparted due to weight

Ff is frictional force

m is mass of the bar

g is acceleration due to gravity

a is acceleration of the bar

If the bar starts from rest, equations of motion involved are,

s = 1/2 a t²

t = √(2s/a)

where,

s is the distance moved by the bar

t is the time taken to reach the bottom

Putting in the known values, we have,

t = √(2× 18.8/a)

a = g sinθ - μg cosθ = 9.8 sin8° - 0.055× 9.8 cos8° = 1.364 - 0.543 = 0.821 m/s²

t = √(2× 18.8/a) = t = √(2× 18.8/0.821) = 6.77 s

Thus, the time required to reach the bottom of the incline is calculated to be 6.77 s.

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Kathy’s speed is 5 miles per hour and Cheryl’s speed is 3 miles per hour.

Kathy and Cheryl are walking in a fundraiser. Kathy completes the course in 3.6 hours and Cheryl completes the course in 6 hours. Kathy walks two miles per hour faster than Cheryl.

Let the speed of Kathy be x Then the speed of Cheryl will be (x - 2)

Distance covered by both of them will be the same.

Therefore,(x)(3.6) = (x - 2)(6)3.6x = 6x - 12(3.6)12 = 2.4x

x = 5

Thus, the speed of Kathy = 5 miles per hour and the speed of Cheryl = 3 miles per hour.

So, the  Kathy’s speed and Cheryl’s speed is: Kathy’s speed is 5 miles per hour and Cheryl’s speed is 3 miles per hour.

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Answer:

B is directed from N to S     (upwards at the open end)

Let the magnet be oriented with the open end at the north

F = q * v X B

A positive charge would be deflected towards the East using v X B

This is the direction of the "conventional" current which is B to A

Actual charges flow from A to B but the sign of the charge is -q

To convert 5.7 kilometers into decameters, you can divide 5.7 by 0.1.

1 kilometer = 1000 meters

1 decameter = 10 meters

So,

1 kilometer = 100 decameters

Therefore,

5.7 kilometers = (5.7 x 100) decameters = 570 decameters.

Answer: The final Velocity, V, of the car is 7.9m/s

Explanation:

Given the following :

Toy car starts from rest, therefore,

Initial Velocity (u) = 0

Acceleration (a) = 1.5m/s^2 E for time, t = 5.25s

Final velocity (V) of the car =?

Using the motion equation:

v = u + at

Where v = final Velocity

u = Initial Velocity

a = acceleration

t = time

v = 0 + 1.5(5.25)

v = 0 + 7.875

v = 7.875m/s

v = 7.9m/s

It will take approximately 22.037 years for the amount of the radioactive isotope to equal 317 grams.

To determine how long it will take for the amount of the radioactive isotope to equal 317 grams, we can set up an equation using the given formula:

A(t) = 500e^(-0.02828t)

In this case:

Initial amount (A₀) = 500 grams

Target amount (A(t)) = 317 grams

We need to find the time (t) when the amount of the isotope is equal to 317 grams. We can rearrange the equation and solve for time:

A(t) = A₀e^(-0.02828t)

317 = 500e^(-0.02828t)

317/500 = e^(-0.02828t)

Taking the natural logarithm (ln) of both sides to isolate the exponent:

ln(317/500) = -0.02828t

t = ln(317/500) / -0.02828

t ≈ 22.037 years

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The fragments reaction is 7.59 MeV/nucleon and  8.39 MeV/nucleon

What is nucleus ?

Neutrons and protons, which have opposite electric charges, make up atomic nuclei. The strongest basic force now understood, known as the strong force, is what holds these things together. A normal atom's nucleus generally holds more than 99.9% of the atom's mass yet takes up considerably less than.01 percent of its volume.

What is fission ?

When a neutron collides with a bigger atom, it excites it and causes it to split into two smaller atoms, which are known as fission products. This process is known as fission. A chain reaction might start as a result of additional neutrons that are also emitted. Huge amounts of energy are produced during the splitting of each atom.

1) m_proton + m_netron + m_electron - m_U

= 92*1.007276466812 + 92*5.4857990943e-4 + 143*1.008664916 - (235.0439299)

= 1.9151 u

= 931.494061 * 1.9151 MeV

= 1784 MeV

= 1784/235 = 7.59 MeV/nucleon

2) m_proton + m_netron + m_electron - m_Cs

= 55*1.007276466812 + 55*5.4857990943e-4 + 82*1.008664916 - (136.9070895)

= 1.2338 u

= 931.494061 * 1.2338 MeV

= 1149 MeV

= 1145/137 = 8.39 MeV/nucleon

Therefore, the fragments reaction is 7.59 MeV/nucleon and  8.39 MeV/nucleon.

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The friction between the b;ock and surface is given by mass and accelerartion.

Force = mass * acceleration

a simple lifting machine consisting of a rope which unwinds from a wheel on to a cylindrical drum or shaft joined to the wheel to provide mechanical advantage. reeeeeeeeeeeeeeeeeeeeeeeeee

If a new "minor planet" were to be found in a circular orbit with a radius of 13 AU, 47 years would be its orbital period.

The amount of time it takes for an astronomical object to complete one orbit around another object is known as the orbital period (also called the revolution period). It typically refers to planets or asteroids that orbit the Sun, moons that orbit planets, exoplanets that orbit other stars, and binary stars in astronomy.

The relationship between an object's average distance from its object of orbit and its period is depicted by Kepler's third law. In its most basic form, this can be applied to anything naturally orbiting around other things. Formula: Where: P2=ka3 The orbit's time-based period is called P.

A year is a time it takes for a planet to circle the Sun once, which for Earth is just over 365 days.

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Answer:

Weight is a body's relative mass, or the quantity of matter contained by it.

Explanation:

Hope this helps

Answer: The wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength.

Explanation:

Dr. Hewitt's experiment using the bowling ball to showcase the relationship between momentum, energy and speed of a body in motion. In his first attempt, the ball returns and stops almost exactly at the point it was launched.

Therefore, the ball stopped at the position of initial launch during the first trial.

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Answer:

No, it does not violate Newton's first law

Explanation:

Newton's first law of motion states that, "A body will continue in its state of rest or uniform motion in a straight unless acted up by a force to make it act otherwise" This means a force is required to initiate movement and also required to halt it.

For a skate positioned to roll down a bank, Here, the force of gravity acting on the skate acting downward will make the skate roll without having to push off the skate with a foot. Because the position of the skate doesn't balance the Gravitational force acting on it. Hence. The Gravitational force is enough to set the skate in motion.

The tension in the string for waves of frequency of 39 Hz to have a wavelength of 0.740 m is 1166 N.

The velocity(v) of a wave in a string is given by the following formula

V = 1/2L x √(T/μ) .........(i)

Here, L is the length of rope

T is the tension

μ is the mass per unit length i.e, M/L

We know that v = f x λ

Where f is the frequency and λ is the wavelength

So, the equation becomes

f x λ =  1/2L x √(T/μ)

Putting f = 39 Hz, lambda = 0.740 m, L= 2.80 m and m = 0.125 kg

39 x 0.740 = 1/2(2.80) root T/(0.125/2.80)

On solving the above equation

T = 1166 N.

Hence, the tension in the string for waves of frequency of 39 Hz to have a wavelength of 0.740 m is 1166 N.

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Answer:

D: D= m/v

Explanation:

That is the right formula. I like to remember that finding density takes a lot of HEART because it is shaped like a heart

Answer:

No, when water converts to steam on heating, the temperature remains constant at the boiling point and the heat supplied to the water is used for the vaporisation of water, rather than increasing the temperature of water.

This energy used for the vaporisation is termed as the latent heat of vaporisation.

You’ll find similar observations if you try heating ice - the temperature remains at 0∘ Celsius. Here, it’s the latent heat of fusion.