A small object begins a free-fall from a height of =81.5 m at 0=0 s . After τ=2.20 s , a second small object is launched vertically up from the ground with an initial velocity of 0=40.0 m/s . At what height from the ground will the two objects first meet?

Answer:

131 N

Explanation:

F = 82.0 kg x 1.60 m/s^2 = 131.2 N

1. Reducing Carbon Entering: Planting more trees at the location is an effective way to reduce the amount of carbon at this location.

Carbon is an element found in abundance in the Earth's atmosphere and is one of the most abundant elements in the universe. Carbon is a key component of all living organisms and serves as the backbone of life on Earth. Carbon exists in several different forms, including coal, oil, natural gas, and diamonds, and can be found in many other materials, such as plastics, paper, and fabrics.

Trees absorb carbon dioxide from the atmosphere and use it to produce oxygen through photosynthesis. This process helps to reduce the amount of carbon entering the location.
2. Increasing Carbon Exiting: Installing solar panels at the location is an effective way to increase the amount of carbon exiting the location. Solar panels convert solar energy into electricity, releasing carbon dioxide into the atmosphere during the process. This helps to reduce the amount of carbon at the location by releasing it back into the atmosphere.

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First, for this problem, we will need to know the formula for time dilation

Where t is the time in the reference frame on earth

t0 is the time on the ship

v is the velocity relative to lightspeed

and c is light speed in a vacuum

For this problem, we will need to convert .93x10^8 to a fraction of light speed.

.93x10^8 = .31c

Now, we can plug in the numbers we get from the given

t0 = 6 hours since the ship has been in the air for 6 hours

t = 6.31089

For the answer to be valid, we will convert .31089 to minutes by multiplying it by 60 (60 minutes in a hour)

18.654 minutes

Answer:

Both are analogous terms.

Explanation:

Linear momentum is used to refer to a body moving on a straight path whereas angular momentum is used for a body moving on a circular path.

The momentum of the kid weighing 30kg is 210kgm/s.

Momentum in physics refers to the tendency of a body to maintain its inertial motion i.e. the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

According to this question, a 30kg kid on a bike is moving in the positive direction at 7 m/s. The momentum is calculated thus;

Momentum = 30kg × 7m/s = 210kgm/s

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The bird has the most potential energy when it is at the highest point of its dive into the ocean.

1. Potential energy is the energy possessed by an object due to its position or state.

2. In this case, we are considering the potential energy of a bird diving into the ocean.

3. The potential energy of an object depends on its height and mass.

4. When the bird is at the highest point of its dive, it has the maximum potential energy.

5. As the bird dives deeper into the ocean, its height decreases, resulting in a decrease in potential energy.

6. At the moment the bird reaches the surface of the water, its potential energy is at its minimum, as it is at its lowest height.

7. The potential energy is converted into kinetic energy as the bird accelerates towards the water.

8. Kinetic energy is the energy possessed by an object due to its motion.

9. When the bird enters the water, its potential energy is completely converted into kinetic energy.

10. The bird continues to possess kinetic energy as it moves through the water.

11. Once the bird comes to a stop in the water, its kinetic energy is reduced to zero.

12. At this point, the bird's potential energy is also zero, as it is at its lowest height and not in motion.

13. Therefore, the bird has the most potential energy when it is at the highest point of its dive into the ocean.

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Answer:

A mushroom rock, rock pedestal, or gour is a typical mushroom-shaped landform that is formed by the action of wind erosion. ... In some cases, harder rocks are arranged horizontally over a softer rock, resulting in such erosion.

Explanation:

Answer:

wind erosion

Explanation:

The motion of a Brownian particle can be described by an overdamped Langevin equation.

The Langevin equation for an elastically bounded Brownian particle is given by the following equation:

dx dV my. - + f(t) dt dx where the potential is given by

The mean square displacement (MSD) of the particle can be computed using the following formula:

MSD =  = (2kBT/my) t

The MSD of a Brownian particle increases linearly with time and is proportional to the temperature of the system, where kBT is the thermal energy of the particle, m is its mass, and y is the damping coefficient.

In the overdamped limit, the particle's velocity can be ignored, and the motion can be described entirely by its position. The particle's motion can be influenced by random fluctuations caused by the thermal energy of the system, which can be modeled as a Gaussian white noise process f(t) with zero mean and a variance of 2D.

The particle's motion is confined to a bounded region by an elastic potential, which exerts a force on the particle that is proportional to its displacement from the origin. The potential has a minimum at the origin, and its strength is determined by the spring constant k.

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Answer:

According to the principle of the Conservation of Energy, energy can neither be destroyed or created, energy can be transformed from form to another

The forms of energy the car has at the different stages is given by virtue of either the position of the car, which is the car's potential energy, or the speed of the car, which gives the potential energy of the car

However, due to the frictional forces acting on the car, there is a frictional force which requires work to be done for the car to move between points in the roller coaster

Therefore, based on the Conservation of Energy principle, we have;

The total energy of the roller coaster, M.E. = m·g·\(h_{max}\)

Where;

m = The mass of the roller coaster = 4,500 kg

g = The acceleration due to gravity ≈ 9.81 m/s²

\(h_{max}\) = The maximum height = 30 m

Therefore, M.E.\(_A\) = 4,500 × 9.81 × 30 = 1,324,350 J

The energy at point B, \(M.E._B\) = 4,500×15×9.81 + (1/2) ×4,500×17.15² = 1,323,950.625

The energy at point B, \(M.E._B\) = 1,323,950.625 J

At point C, the total energy, \(M.E._C\) = (1/2)·m·v²

Where;

v = The velocity of the roller coaster at point c = 24.25 m/s

Therefore;

\(M.E._C\) = (1/2) × 4,500 × 24.25² = 1,323,140.625

At point C, the total energy, \(M.E._C\) = 1,323,140.625 J

Therefore, given that the energy at point A, M.E.\(_A\) is larger than the energy at point B, \(M.E._B\), is larger than the energy at point C, \(M.E._C\), the loss in energy can be explained by the presence of the friction which require energy for movement of the roller coaster between the points

Explanation:

The linear acceleration of the disk is \(8.17 m/s^{2}\).

We know that, a rotating disk has two acceleration:

                       Radial acceleration (\(a_{r}\)) = ω^2 * r  and  

                       Tangential acceleration\((a_{t} )\) = \(\alpha r\)

where ω = angular velocity

           \(\alpha\) = angular velocity

           r = radius

Given, ω = 4 m/s , \(\alpha\) = 3.4 \(m/s^{2}\) , r = 0.5m

Putting these values in above equation we get

           \(a_{r} = 8 m/s^{2} \\a_{t} = 1.7 m/s^{2}\)

The linear acceleration is given by:

           \(a = \sqrt{a_{r} ^{2} + a_{t} ^{2} }\)

Putting respected values in above equation we get a = 8.17 \(m/s^{2}\).

So the linear acceleration of the disk is \(8.17 m/s^{2}\).        

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The angle of reflection is  35°.

The angle of refraction is  59.36°.

It is referred to as light reflection when a light ray hits a polished, smooth surface and bounces back. The incident light rays hit the surface and are reflected off of it. The beam that returns is referred to as the reflected ray.

Given that: a light beam in air has an angle of incidence of 35 degrees at the surface of a glass plate.

The index of refraction for glass is = 1.50.

Hence, angle of reflection is = angle of incident = 35°.

The angle of refraction is = sin⁻¹(μsini)

=  sin⁻¹(1.50sin35°)

= 59.36°

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The quantum number of an electron confined in a 5.0-nm-long one-dimensional box, with a de Broglie wavelength of 2.0 nm, can be determined using the formula n = L/λ, where n is the quantum number, L is the length of the box, and λ is the de Broglie wavelength.

In a one-dimensional box, the allowed energy levels for a particle are determined by the length of the box and the de Broglie wavelength associated with the particle. The quantum number n represents the number of nodes or segments that can fit within the box.

Using the formula n = L/λ, we can calculate the quantum number by dividing the length of the box (L = 5.0 nm) by the de Broglie wavelength (λ = 2.0 nm).

Substituting the values, we get n = 5.0 nm / 2.0 nm = 2.5. However, quantum numbers must be integers, so we round down the result to the nearest whole number. Therefore, the quantum number for the electron confined in the 5.0-nm-long one-dimensional box with a de Broglie wavelength of 2.0 nm is 2.

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Ek=kinetic energy  (J)

m=mass of object (Kg)

v=speed of object  (m/s)

We have the following formula:

Ek=(1/2)mv²   ⇒ m=2(Ek)/v²

In this case:

m= mass of the child + mass of the bike

m=30 kg + m₁       (m₁=mass of the bike).

We would have to modify our formula like this:

m=2(Ek)/v²

m=30 kg + m₁

30 kg +m₁=2(Ek)/v²

m₁=2(Ek)/v²-30 kg

We have the following data:

v=0.6 m/s

Ek=12.4J

m=30 Kg + m₁

Therefore:

m₁=2(Ek)/v²  - 30 kg

m₁=2(12.4 J)/(0.6 m/s)²  - 30 kg

m₁=24.8 J/(0.36 m²/s²)  -30 kg

m₁=68.89 Kg - 30 kg

m₁=38.89 Kg

Answer: the mass of the bike is 38.89 Kg.

Answer:

the correct answer is B) 27.

Explanation:

To find the angle of refraction, you can use the formula:

n1 * sin(angle of incidence) = n2 * sin(angle of refraction)

where n1 and n2 are the refractive indices of the two media (in this case, air and the liquid), and the angles are measured from the normal to the surface.

Plugging in the values from the problem, we have:

1 * sin(40) = 1.5 * sin(angle of refraction)

Solving for the angle of refraction, we get:

angle of refraction = sin^-1(1/1.5 * sin(40))

Using a calculator or a table of trigonometric functions, we can find that the value of sin^-1(1/1.5 * sin(40)) is approximately 27.3 degrees.

Therefore, the correct answer is B) 27.

Answer:

Newton's second law is F=ma. And since inertia is the resistance an object has against a change in velocity or force, you must push a lot harder to start moving an object, but once it starts to move, it is a lot easier, until you go to stop it.

Explanation:

Answer:

68.6N

Explanation:

Given parameters:

Mass of object  = 7kg

Unknown:

Weight  = ?

Solution:

The weight is the downward force of gravity on a body;

              Weight  = mass x acceleration due to gravity

             Weight  = 7 x 9.8 = 68.6N

A

An object at rest will remain at rest unless acted on by a force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by a force.

Explanation:

Answer:

Law of inertia is Newton's first law of motion..

Explanation:

It means that a body will tend to be in it's motion or tend to move in a straight line unless any external force is acted upon it..

Eg: while you are travelling in bus.. If breaks are suddenly applied your body falls forward because you were in motion with bus but it tries to be in motion when breaks are applied...

Therefore, the kinetic energy of the goose is approximately 928.2 joules.

To calculate the kinetic energy of the goose, we need to convert its mass from pounds to kilograms, and its velocity from miles per hour to meters per second.

1 pound = 0.453592 kg

1 mile/hour = 0.44704 meters/second

Using these conversion factors, we can find the mass and velocity of the goose in SI units:

mass = 20.3 lb x 0.453592 kg/lb = 9.20513 kg

velocity = 10.1 miles/hour x 0.44704 meters/second = 4.51444 m/s

The kinetic energy of the goose is given by the formula:

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

here KE ia all about the kinetic energy, and m is the mass, here v is the velocity.

Put all the values so that we have found, and we get:

KE = (1/2)(9.20513 kg)\((4.51444 m/s)^{2}\) = 928.2 joules

Therefore, the kinetic energy of the goose is approximately 928.2 joules.

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Answer:

V = 6720 [Lt]

Explanation:

The volume of a paralepiped can be found by means of the following expression:

V = L*W*H

where:

L = length = 14 [m]

W = width = 80 [cm] = 0.8 [m]

H = heigth = 60 [cm] = 0.6 [m]

V = volume [m³]

V = 14*0.8*0.6

V = 6.72 [m³]

Now we must apply the conversion factor of cubic meters to liters, this factor tells us that 1000 liters is equal to one cubic meter.

\(6.72[m^{3}]*1000\frac{lt}{1m^{3} } \\\)

V = 6720 [Lt]

Answer:

increase to four times its initial value

hope this helps you ☺️☺️

Answer:

Applied Force.

Gravitational Force.

Normal Force.

Frictional Force.

Air Resistance Force.

Tension Force.

Spring Force.

Explanation:

:)

Answer:

B. They are expensive to collect and transform into energy.

Explanation:

All of the other options are positive aspects of renewable resources. B is the only disadvantage of renewable resources given in the question.

Answer:

They are expensive to collect and transform into energy.

Explanation:

Edge

Answer:

where's ur answer?

Explanation:

hihi

Answer:

Vf = 60 [m/s]

Explanation:

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

\(v_{f}= v_{i}+(a*t)\)

where:

Vf = final velocity [m/s]

Vi = initial velocity = 0

a = acceleration = 1 [m/s^2]

t = time = 60 [m]

Now replacing:

Vf = 0 + (1*60)

Vf = 60 [m/s]

Answer:

D.Elastic energy| Magentic energy