suppose a rocket travels at the escape velocity from earth (11 km/s). will time on the rocket differ noticeably from time on earth?

Explanation:

weight of the piano = mg

w = 99 x 10 =990 N

The frame of reference you are operating in determines the momentum. The overall momentum will be 0 if you operate in a frame of reference where the center of mass is stationary.

a bomb before explosion does mot have any kind of external forces, and here we see how the momentum does not affected by before Collison.

According to the law of conservation of momentum, the combined momentum of objects that interact stays constant. This implies that the overall momentum prior to  explosion equals the total momentum following a  explosion.

P = mv determines an object's momentum prior to impact.

Its velocity and momentum are unaffected in the absence of an external force prior to the impact.  

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Answer:

resultant force is a overall force acting on a body

hope it helps.

The x-component of A vector is - 2.39 unit.

The y-component of A vector is  - 4.02  unit.

Vector is a colloquial term  that refers to some quantities that cannot be expressed by a single number (a scalar) or to elements of some vector spaces.

The magnitude of A vector is 4.68 unit.

The  direction of A vector is 30.7° to the left of the negative y-axis.

So, A vector is in 3rd co-ordinate.

Hence, the x-component of A vector is = - Asin30.7°

= - 4.68 × sin30.7°

= - 2.39 unit.

Hence, the y-component of A vector is = - Acos30.7°

= - 4.68 × cos30.7°

= - 4.02  unit.

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The final volume of the gas is 77.7 cm3. To solve this problem, we can use the combined gas law which relates the initial and final conditions of pressure, volume, and temperature of a gas. The combined gas law is expressed as : (P₁V₁)/T₁ = (P₂V₂)/T₂.

P₁, V₁, and T₁ are the initial pressure, volume, and temperature, respectively, and P₂, V₂, and T₂ are the final pressure, volume, and temperature, respectively.

In this case, we know that the initial pressure is zero since the container was initially evacuated. We are also given the initial volume, temperature, and amount of gas. Therefore, we can calculate the initial pressure using the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the amount of gas (in moles), R is the universal gas constant, and T is the temperature (in Kelvin).

First, we need to convert the temperature from Celsius to Kelvin by adding 273.15:

T₁ = 20 + 273.15 = 293.15 K

Next, we can substitute the values given into the ideal gas law:

P₁V₁ = nRT₁
P₁ = nRT₁/V₁
P₁ = (0.10 mol)(8.31 J/mol K)(293.15 K)/(0.042 L)
P₁ = 5828.57 Pa

Now that we have the initial pressure, we can use the combined gas law to find the final volume:

(P₁V₁)/T₁ = (P₂V₂)/T₂

Since the process is isobaric (constant pressure), the final pressure is the same as the initial pressure:

P₂ = P₁ = 5828.57 Pa

We also need to convert the final temperature to Kelvin:

T₂ = 290 + 273.15 = 563.15 K

Now we can solve for V₂:

(P₁V₁)/T₁ = (P₂V₂)/T₂
V₂ = (P₁V₁T₂)/(P₂T₁)
V₂ = (5828.57 Pa)(0.042 L)(563.15 K)/(5828.57 Pa)(293.15 K)
V₂ = 0.0777 L or 77.7 cm3 (rounded to 3 significant figures)

Therefore, the final volume of the gas is 77.7 cm3.

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Answer:

I. A radio transforms electrical energy into sound energy = audio sound.

II. A bulb converts electrical energy into heat and light energy = light.

III. A standing fan converts electrical energy into kinetic energy.

IV. The sun converts nuclear energy into light and heat energy.

V. A microwave oven converts wave energy into heat energy.

Explanation:

Energy can be defined as the ability of a body to do work. There are different forms of energy and these includes; electrical energy, sound energy, light energy, wave energy, nuclear energy, solar energy, etc.

According to the law of conservation of energy which states that, energy cannot be destroyed but can only be converted or transformed from one form to another.

Hence, some examples of energy being converted or transformed are;

I. A radio transforms electrical energy into sound energy = audio sound.

II. A bulb converts electrical energy into heat and light energy = light.

III. A standing fan converts electrical energy into kinetic energy.

IV. The sun converts nuclear energy into light and heat energy.

Answer:

S = V t     where S is the horizontal distance traveled

1/2 g t^2 = H       where H is the vertical distance traveled

t^2 = 2 H / g

V^2 = S^2 / t^2 = S^2 g / (2 H) combining equations

tan theta = H / S

V^2 = S g / (2 tan theta)

Using S = L cos theta

V^2 = L g cos theta / (2 tan theta)

Giving V in terms of L and theta

Answer:

40 seconds

Explanation:

Time (measured in seconds) = Work Done (measured in Joules) / Power (measured in Watts)

Time (s) = 1200/30

Time (s) = 40

It will take 40 seconds for a 30W light bulb to transfer 1200J of energy.

Once the brick and the iron are cooled down, they will not have the same thermal energy. Thermal energy depends on the mass and temperature of an object. Brick and iron may have different masses, and even if they have the same mass, their temperatures could be different after cooling. Therefore, their thermal energies would be different.

Regarding temperature, once the brick and the iron reach thermal equilibrium with their surroundings, they will have the same temperature. Thermal equilibrium means that there is no net transfer of heat between the objects and their surroundings.

As for the room temperature water, it will have more thermal energy compared to both the cooled brick and iron. This is because water has a higher specific heat capacity compared to most solid materials. Even at the same temperature, water can store more thermal energy due to its higher heat capacity.

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Answer: u excited for the super bowl?

Explanation:

Answer:

The answer is True

Explanation:

~FuntimeFazbear87

Answer:

Because they travel by interacting within other particles.  

Explanation:

Sound cannot travel in a vacuum, sound waves need to interact with other particles in order to be carried and this makes sound waves a mechanical wave.

Answer: some may argue that while teacher’s only provide service to a single classroom, superstar athletes are entertaining fans all around the world, enticing people with a feeling of relaxation and excitement. Obviously, what these individuals must not be aware of is the most important man in our nation, the president, who makes critical decisions that affect the entire world every day, only makes $400,000 a year. While President Obama is hard at work reviving the economy, the unproven rookie in the MLB is earning way over that figure. Furthermore, police officers, firefighters, and doctors save lives while risking their own for a fraction of what sports stars make. People in the military leave their families at home to defend and protect the country knowing they may never return. It's truly a pity that none of these true heroes are given the same recognition by society as athletes such as Brett Favre or Michael Jordan are given. While I do understand that making it into the pros is not an easy thing to do, and that it takes a tremendous number of hours of hard work and dedication every day to earn a job in professional sports, these people do nothing more than entertain the general public.

Explanation:

Answer:

Wouldn't it be great to make nearly $111 million a year simply to play a game? Tiger Woods, along with many other professional athletes, certainly think so. But do these athletes really deserve all that money?

In my mind, absolutely not. Professional athletes are making too much money in a society where salaries and wages are traditionally based on the value of one's work. In today's society, one should be paid according to the job’s economic importance and their value to society.

Teaching is one of the most economically important occupations because our future economy relies on the education of its youth, yet teachers are paid astronomically less than the average professional athlete is. In fact, each basket Kobe Bryant scores earns him equivalent to the average classroom teacher’s yearly salary.

However, some may argue that while teacher’s only provide service to a single classroom, superstar athletes are entertaining fans all around the world, enticing people with a feeling of relaxation and excitement.

Obviously, what these individuals must not be aware of is the most important man in our nation, the president, who makes critical decisions that affect the entire world every day, only makes $400,000 a year. While President Obama is hard at work reviving the economy, the unproven rookie in the MLB is earning way over that figure.

Furthermore, police officers, firefighters, and doctors save lives while risking their own for a fraction of what sports stars make. People in the military leave their families at home to defend and protect the country knowing they may never return. It's truly a pity that none of these true heroes are given the same recognition by society as athletes such as Brett Favre or Michael Jordan are given.

While I do understand that making it into the pros is not an easy thing to do, and that it takes a tremendous number of hours of hard work and dedication every day to earn a job in professional sports, these people do nothing more than entertain the general public.

Moreover, in my mind, if these athletes want to continue to be rewarded with the fame and fortune that is unfairly bestowed upon them, they must prove to the world that they are going to be positive role models for future athletes, and those who admire them.

Explanation:

found if off some website lol hope it helps! <3

F = G M.m/r²

F = force, N

G = gravitational constant,  6.67 x 10⁻¹¹ Nm²/kg²

m,M = mass of object,  kg

r = distance, m

F = 6.67 x 10⁻¹¹ x 69.3 x 52/1.2²

F = 1.669 x 10⁻⁷

Answer:

The Answer is: ∴t=150 nm.

In an elastic collision, both momentum and kinetic energy are conserved.

Let's denote the 620-g object as object 1 and the 320-g object as object 2.

The initial momenta of the objects are:

 \(p_1 i = m_1 v_1 i\)

       = (0.620 kg)(2.1 m/s)

       = 1.302 kg m/s (to the left)

  \(p_2 i = m_2 v_2 i\)

         = (0.320 kg)(-3.8 m/s)

        = -1.216 kg m/s (to the right)

The total initial momentum of the system is:

\(p_{initial} = p_1 i + p_2 i\)

           = 1.302 kg m/s - 1.216 kg m/s

           = 0.086 kg m/s (to the left)

During the collision, momentum is conserved, so the final momentum of the system is also 0.086 kg m/s to the left.

Let's denote the final velocities of the objects as v₁f and v₂f.

Using the conservation of momentum, we can write:

p₁i + p₂i = p₁f + p₂f

where p₁f = m₁v₁f and p₁f = m₂v₂f.

Since the collision is perfectly elastic, kinetic energy is also conserved. We can write:

\((1/2)m_1v_1i^2 + (1/2)m_2v_2i^2 = (1/2)m_1v_1f^2 + (1/2)m_2v_2f^2\)

Substituting the expressions for p1f and p2f from the momentum equation, we get:

\(m_1v_1i + m_2v_2i = m_1v_1f + m_2v_2f\)

\((1/2)m_1v_1i^2 + (1/2)m_2v_2i^2 = (1/2)m_1v_1f^2 + (1/2)m_2v_2f^2\)

Solving these equations simultaneously, we get:

\(v_1f = (-m_2/m_1)v_2i + (2m_2/m_1)v_1i\)

      = (-0.320 kg/0.620 kg)(3.8 m/s) + (2)(0.320 kg/0.620 kg)(2.1 m/s)

      = -1.87 m/s

\(v_2f = (-m_1/m_2)v_1i + (2m_1/m_2)v_2i\)

       = (-0.620 kg/0.320 kg)(2.1 m/s) + (2)(0.620 kg/0.320 kg)(-3.8 m/s)

       = 5.07 m/s

The final speed of the 620-g object is:

\(|v_1f| = 1.87 m/s\)

The change in kinetic energy of the 620-g object is:

ΔK =\((1/2)m_1v-1f^{2} - (1/2)m_1v_1i^2\)

     = \((1/2)(0.620 kg)(1.87 m/s)^2 - (1/2)(0.620 kg)(2.1 m/s)^2\)

    = -0.062 J

The negative sign indicates that the kinetic energy of the object decreased during the collision.

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Answer: Mendeleev arranged the elements in his periodic table in order of increasing atomic mass. In the modern periodic table, elements are arranged in order of increasing atomic number

Most organisms are unable to take the element nitrogen from the atmosphere. Nitrogen is an element that makes up 78% of the Earth's atmosphere. However, most organisms are unable to utilize atmospheric nitrogen. Atmospheric nitrogen is transformed into a usable form by nitrogen fixation.

Nitrogen fixation is the process of converting atmospheric nitrogen into a usable form. Biological nitrogen fixation is carried out by bacteria that are found in the soil, and it is a crucial part of the nitrogen cycle. Nitrogen-fixing bacteria can be found in the root nodules of some plants, such as legumes, where they convert atmospheric nitrogen into ammonia. Ammonia is converted into nitrates by other bacteria, making it accessible to plants. As a result, these plants have a higher nitrogen content than non-legumes, and they can enrich the soil by releasing nitrogen when they die. Overall, nitrogen fixation is a crucial process for the survival of many organisms, as it provides a way to convert atmospheric nitrogen into a usable form.

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When Lana is gliding across the pond on ice skates. By the time she makes it to the other side of the pond, she has nearly come to a complete stop.  Friction forces has caused her to slow down. Hence option D is correct.

When two surfaces move relative to each other, the friction between them turns kinetic energy into thermal energy (that is, work to heat). As demonstrated by the utilisation of friction caused by rubbing pieces of wood together to ignite a fire, this feature may have severe repercussions. When motion with friction occurs, such as when a viscous fluid is churned, kinetic energy is transformed to thermal energy. Another significant effect of many forms of friction is wear, which can lead to performance deterioration or component damage. The science of tribology includes friction. Ice skates are metal blades affixed to the bearer's feet that are used to drive the bearer across a sheet of ice when ice skating.

Hence option D is correct.

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Answer:

because if someone close to u gets sick you would know how to cure it

Answer:

elliptical

Explanation:

The orbits of the planets are ellipses with the Sun at one focus, though all except Mercury are very nearly circular.

Acceleration is a vector quantity that is defined as ❝ rate of change in velocity ❞

And as per the question, the plane can go from 0 miles to 100 miles/hour in 10 seconds that shows rate of change in its velocity. that is :

from 0 miles/hour to 100 miles/hour. hence Acceleration is the quantity being described about the new plane.

[ v = final velocity, u = initial velocity, t = time ]

So, the Acceleration of the new plane is 10 miles/hour²

Explanation:

The potential energy of an object has the following formula

         Potential energy = mgh

      where m = mass of the object

                   g = acceleration due to gravity

                   h = height of the object

This means that the potential energy of an object depends upon its mass, acceleration due to gravity, and height.

In the given situation we have a bucket full of water. If the mass and acceleration due to gravity are not changed, the only way the potential energy can be decreased is by reducing the height of the bucket full of water.

This can be done by: -

         (i) Lifting the bucket full of water in such a way that you

             decrease its height as compared to the bench.

        (ii) Put the bucket full of water on a stool whose height is

            lower than the bench.

Answer:

1.By decreasing it's contents- this decreases the weight of the bucket thus decreasing the potential energy of the bucket.

2.By decreasing the height of the bench we have decreased the amount of potential energy stored in the bucket

Answer:

\(375\ \text{kg m/s}\)

Explanation:

\(m\) = Mass of biker = \(75\ \text{kg}\)

\(v\) = Velocity of bike = \(5\ \text{m/s}\)

Momentum is given by the product of mass and velocity so,

\(p=mv\)

\(\Rightarrow p=75\times 5\)

\(\Rightarrow p=375\ \text{kg m/s}\)

The momentum of the biker is \(375\ \text{kg m/s}\).

The biker's momentum will be "375 kg m/s".

The proportion or resultant of a subatomic particle mass as well as the speed. Momentum would be a vector quantity, which means it does have a magnitude and therefore an orientation or directions.

According to the question,

Biker's mass, m = 75 kg

Biker's velocity, v = 5 m/s

We know the relation,

Momentum = Mass × Velocity

or,

→ p = mv

By substituting the values, we get

      = 75 × 5

      = 375 kg m/s

Thus the above answer is correct.

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Answer:

152,155 J

Explanation:

115,333 + 36,822 = 152,155J

Explanation:

tan ● = opposite / adjacent

tan 31.5 = 19 / F

0.613 = 19 / F

0.613F = 19

F = 31

sin ● = opposite / hypotenuse

sin 31.5 = 19 / a

0.52 = 19 / a

0.52a = 19

a = 36. 36

Using trigonometry, the base of the triangle is approximately 33.476, and the hypotenuse of the triangle is approximately 38.118.

To find the base and hypotenuse of a right triangle with one angle of 31.5 degrees and a given height of 19:

Here,

Opposite side = height = 19 (given)

Adjacent side = base (unknown)

Hypotenuse = hypotenuse (unknown)

First, let's find the base (adjacent side):

tan(θ) = opposite ÷ adjacent

tan(31.5 degrees) = 19/base

To find the base, we can rearrange the equation:

base = opposite ÷ tan(θ)

base = 19 ÷ tan(31.5 degrees)

Calculating the value:

base ≈ 33.476

So, the base of the triangle is approximately 33.476.

Now, using the Pythagorean theorem, we can write:

hypotenuse² = base² + opposite²

hypotenuse² = (33.476)² + 19²

hypotenuse ≈ 38.118

Therefore, the hypotenuse of the triangle is approximately 38.118.

Thus, base is 33.476, and hypotenuse is 38.118.

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Answer:

The maximum speed of the oscillating object doubles as well.

Explanation:

The oscillatory motion of the object on the spring can be modelled using this equation below:

\(Vmax= A\omega\)

Where

Vmax = the maximum speed of the oscillating object.

A = Amplitude of the oscillating object.

\(\omega\) = angular velocity of the oscillating object.

If the amplitude, A becomes doubled, the new amplitude will be = 2A.

As a result,  \(Vmax = 2 A \omega\)

This shows that the maximum speed has doubled in its value