Which type of satellite has the shortest orbital life?.

Answer:

There are four natural states of matter: Solids , liquids, gases and plasma. The fifth state is the man-made Bose-Einstein condensates. In a solid, particles are packed tightly together, so they don't move much.

Explanation:

The acceleration of a bullet that leaves a 28-in rifle barrel at 2700 ft/s is 1.562 x 10⁶ m/s² and its time in the barrel is 0.0017s

a) How to determine the acceleration of the bullet

Converting inches to a foot

1 inch = 1/12 foot

28-in =  1/12 x 28 ft

28-in = 2.33ft

Therefore, the distance, s, covered by the bullet is 2.333ft

Using one of the equations of motion

2as = u² - v²

The initial velocity is 0

Where a = acceleration of the bullet

            s = distance

             u = initial velocity

             v = final velocity

a = v² - u² ÷ 2s

= (2700 ft/s)² - 0 ÷ 2 (2.333ft)

a = 1.562 x 10⁶ m/s²

b) How to determine the time of the bullet in the barrel

s = v² + u² ÷ 2

t = 2 ÷ (v² + u²)

t = 2 (2.333ft) ÷ (0 + 2700 ft/s)

t = 0.0017s

In summary, a bullet that leaves a 28-in rifle barrel at 2700 ft/s would have an acceleration of 1.562 x 10⁶ m/s², spending a time of 0.0017s in the barrel.

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Answer:

Simple chemical tests can be used to identify the presence of various elements or classes of molecules (Tollen's test). ... Electron spin resonance (ESR): Also referred to as electron paramagnetic resonance (EPR), this method uses the spins of unpaired electrons in molecules to determine structure.

Considering the definition of density, the density of the substance is 1.44×10⁻⁴ \(\frac{g}{cm^{3} }\).

First, you have to know that density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space. In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.

The expression for the calculation of density is:

\(density=\frac{mass}{volume}\)

From this expression it can be deduced that density is inversely proportional to volume.

Also, higher density substances have a greater amount of matter in a certain volume than lower density substances.

In this case, you know that:

Replacing in the definition of density:

\(density=\frac{0.36 g}{2500 cm^{3} }\)

Solving:

density= 1.44×10⁻⁴ \(\frac{g}{cm^{3} }\)

Finally, the density of the substance is 1.44×10⁻⁴ \(\frac{g}{cm^{3} }\).

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Answer:

2.4m/s

Explanation:

Answer:

lol i went by 1 cubic inches and the answer i got was 91.3834

Explanation:

Answer:

heuristic.

Explanation:

Psychology can be defined as the scientific study of both the consciousness and unconsciousness of the human mind such as feelings, emotions and thoughts, so as to understand how it functions and affect human behaviors in contextual terms.

This ultimately implies that, psychology focuses on studying behaviors and the mind that controls it.

A heuristic is an automatic mental shortcut or rule of thumb that avail people the opportunity to make quick and efficient judgement in decision-making process, as well as proffering solutions to a problem. Thus, it allows people to make decisions, pass probability judgement or proffer solutions to problem quickly and efficiently while applying minimal mental effort.

Basically, a heuristic helps an individual to shorten the decision-making time while paying less attention on thinking of his or her next course of action.

Hence, when you're advised to try working backward from the desired goal to the starting point or current state. This advice describes a heuristic.

Answer:

F = 9800(42667 + 16000)

F = 5.75 × 10⁸N

Explanation:

The total mechanical energy of the ball just before it strikes the ground is 43.092 J.

The total of a system's kinetic and potential energy is known as mechanical energy. Whereas potential energy is the energy held in an item as a result of its position or configuration, kinetic energy is the energy of motion. Mechanical energy is simply the energy connected to an object's motion and position.

Given that,

Mass (m)= 0.1kg

Height (h)= 22m

Acceleration due to gravity (g) = 9.81 m/s²

Potential Energy = mgh

                            =  0.1 kg ×  9.81 m/s² × 22 m

                            = 21.546 J

We may consider the potential energy to be equal to the kinetic energy shortly before contact since the ball's potential energy is converted into kinetic energy when it reaches the ground:

Kinetic Energy = Potential Energy

Kinetic Energy = 21.546 J

Therefore,

Total Mechanical Energy = Kinetic Energy + Potential Energy

                                          = 21.546 J + 21.546 J

                                          = 43.092 J

Hence, the total mechanical energy of the ball just before it strikes the ground is 43.092 J.

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Answer:

Explanation:

Velocity is at its greatest when kinetic energy is at its max which is when all the ball's energy has been transformed from potential energy to kinetic energy which is at the lowest point in its travels (assuming the ball is rolling down a ramp). You have no picture here so this answer is a general one, not a specific one.

Answer:

80 Percent

Explanation:

E=energy output/energy input×100

E=8000/10000×100

E=0.8×100

E=80 percent.

Mark brianliest if my answer suit your question

If the machine put, in 8000 J, and the user puts 10,000 J of work then the efficiency of the machine will be equal to 80%.

Work is a physics term used to describe the transfer of energy that takes place when an object changes above a distance because of an external force, at least some of which is given in the vector of the dislocation. The element of the force acting all along the path multiplied by the length of the path can be used to calculate work if the force is constant.

Mathematically, this idea is expressed as W = fd, where W is the effort and f is the force multiplied by d, the distance. Work is completed whenever the force is applied at an angle with about the displacement.

As per the data provided in the question,

Total input energy = 10,000 J

Total output energy = 8,000 J

Then, the efficiency (η) of the machine will be,

η = (output energy/input energy) × 100

η = 8000/10000 × 100

η = 80%.

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To solve this problem, you can use the equations of motion for rotational motion under constant acceleration:

ωf = ωi + αt --(1)

θ = ωit + 0.5αt^2 --(2)

where ωi is the initial angular velocity, ωf is the final angular velocity, α is the angular acceleration, t is the time elapsed, and θ is the angular displacement.

Using equation (1), we can find the angular acceleration of the wheel:

α = (ωf - ωi)/t

= (30.0 rad/s - 10.0 rad/s)/20.0 s

= 1.0 rad/s^2

Using equation (2), we can find the total angular displacement of the wheel during the 20.0 seconds:

θ = ωit + 0.5αt^2

= 10.0 rad/s × 20.0 s + 0.5 × 1.0 rad/s^2 × (20.0 s)^2

= 400.0 rad

To find the time at which the wheel has undergone half of this angular displacement, we can use equation (2) again:

θ/2 = ωit + 0.5αt^2

Rearranging and solving for t, we get:

t = [(-ωi) ± sqrt(ωi^2 + 2αθ)]/α

Since we are looking for a positive time, we take the positive root:

t = [(-10.0 rad/s) ± sqrt((10.0 rad/s)^2 + 2 × 1.0 rad/s^2 × 400.0 rad)]/1.0 rad/s^2

≈ 12.4 s

Therefore, the answer is B, 12.4 s.

Answer: Through a series of collisions between the gas molecules and dust particles, this material became organized in the form of a circumstellar disk. The circumstellar disk is where the planets formed. ... Not shown, eventually the star blows away the excess gas and some of the dust to become visible.

Explanation: Google

Answer:

It can be reused in another star because the law of conservation of matte states that matter is neither created nor destroyed.

Explanation:

hope this helps

Answer:

mass (m) = 0.075 kg

acceleration (a) = 550000 m/\(s^{2}\)

F = ( 0.075 kg )( 550000 m/\(s^{2}\) ) = 41250 N

Explanation:

F = ma ; force is equal to mass times acceleration

mass (m) = 0.075 kg

acceleration (a) = 550000 m/\(s^{2}\)

F = ( 0.075 kg )( 550000 m/\(s^{2}\) ) = 41250 N.

do you get these options in the drop down?

The tension in the wall of the bubble is 0.0165 N/m.

The tension in the wall of the bubble can be found using the Laplace's law, which states that the pressure difference across the wall of a spherical bubble is directly proportional to the surface tension and inversely proportional to the radius of the bubble:

ΔP = 2γ/r

where ΔP is the pressure difference across the bubble wall, γ is the surface tension, and r is the radius of the bubble.

We can rearrange this equation to solve for the surface tension:

γ = rΔP/2

Substituting the given values, we get:

γ = (250 μm)(2 mm Hg)/(2) = 125 μm Hg = 0.0165 N/m

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The measured variable is the measurement device's output. Option A.

The physical quantity or attribute being measured and recorded by the measurement device is referred to as the measured variable. Temperature, pressure, voltage, current, or any other quantifiable quantity could be used.

Changes in the measured variable are sensed or detected by the measurement device and converted into a form that may be displayed, recorded, or processed.

The feedback signal is basically a signal that is used to control and regulate the system output. There is a very big difference between the measured variable and signal feedback as a result. As a result, the right answer is A.

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Answer:

Someone who writes software or programs for computers is called a programmer.

Explanation:

Answer:

Acceleration, \(a=4\ m/s^2\)

Explanation:

Given that,

Initial velocity, u = 20 m/s

Final velocity, v = 60 m/s

Time, t = 10 s

We need to find the acceleration of the car. It is equal to the change in velocity divided by time.

\(a=\dfrac{v-u}{t}\\\\a=\dfrac{60-20}{10}\\\\a=\dfrac{40}{10}\\\\a=4\ m/s^2\)

So, the acceleration of the car is \(4\ m/s^2\).

Answer:

answer down below

Explanation:

hi! newton's third law applies to a lot of things. this is shown when we jump, bounce a ball, or push something, for example. the law states that for every action, there an equal and opposite reaction. when you bounce a ball, it bounces back up at the same force at which you dropped it.

hope this helps!

Answer:

a. The arrow follows a parabolic path

b. As the arrow hits the ground,

Explanation:

a Describe the arrow's trajectory, in particular noting approximately when the arrow has the most deceleration, the most acceleration, and then why the shift begins to happen. Cover all major points in the trajectory from initial shot to final resting place.

This is because, the arrow is a projectile and its path follows a parabolic curve as it goes from initial shot to final resting place.

Its equation of motion is governed by y = ut - 1/2gt² where y = parabolic path, u = initial speed of arrow, t = time and g = acceleration due to gravity.

As the arrow rises, it undergoes the most deceleration. This is because as it rises, its speed decreases until it gets to the peak of its path, where its velocity is momentarily zero.  

Also, as the arrow drops, it undergoes the most acceleration. This is because as it drops from its peak, its speed increases until it gets to the bottom of its path, where its velocity is maximum and given by v = u' - gt where u' = velocity at peak = 0 m/s. So, v = 0 - gt = -gt.

b. When is the arrow moving fastest?

As the arrow hits the ground, its velocity is highest (maximum), so it is fastest at this point.

Answer:

Below

Explanation:

4. You can use this formula to calculate the acceleration of an object

     acceleration = velocity / elapsed time

Plugging our values in....

     acceleration = 1700 m/s / 25 s

                          = 68 m/s^2

5. You can use this formula to calculate the final velocity of an object

     finalvelocity = initialvelocity + (acceleration) (time)

Plugging our values in....

     finalvelocity = 1.5 m/s + (2.4 m/s^2) ( 3 seconds)

                         = 8.7 m/s

Hope this helps! Best of luck <3

Explanation:

6gtvctyvyvyvyvyfcfufy

Answer:

yes

true

Explanation:

because earth is rotation

Well, it depends on the subject matter:

Physics

\(\displaystyle \frac{v}{f} = \lambda\)

The Grecian lettre, known as lambda \(\displaystyle [\lambda],\)symbolises the wavelength, and is determined by the division of the frequency \(\displaystyle [expressed\:in\:Hz]\)and wave velocity \(\displaystyle [expressed\:in\:km/s, m/s, km/h, mi/h, etcetera].\)The majourity of calculations are strictly perfourmed in metric units. If the frequency is in kilohertz \(\displaystyle [kHz]\)or the wave velocity is in kilometres per hour \(\displaystyle [km/h],\)you must convert these quantities to Hertz and metres per second \(\displaystyle [m/s]\)by multiplying by 1000 \(\displaystyle [10\:kHz = 10000\:Hz].\)

Mathematics [Calculus (Real-Word situations)]

\(\displaystyle F^{-1} = T\)

Now, a prime example of a real-world situation is a Ferris Wheel. At any point you are told to write a cosine and\or sine equation, and you are given the frequency of a wave, \(\displaystyle F,\)double it and set \(\displaystyle \pi\)up against it because remember, in Physics, the formula for finding the wavelength in lengths of time is written above.

*If you need examples on this, check my past responces to real-world situations to regain that ideya of how to find the wavelength of trigonometric equations.

I am joyous to assist you at any time.

The force vector of the particle is (-10cos(t), 0, 10e^t) N.

option D.

The force vector of the particle describes the impact of mass and acceleration of the particle in the given direction.

To find the force vector, we need to take the second derivative of the position vector with respect to time, and then multiply it by the mass:

The position given

s(t) = (cos(t), t, e^t) m

First derivative

v(t) = (−sin(t), 1, e^t) m/s

Second derivative

a(t) = (−cos(t), 0, e^t) m/s^2

F = ma = 10a(t) = (−10cos(t), 0, 10e^t) N

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Answer: friction :)

Explanation:

I took the test and got 100%

The velocity of the platform after a sudden rain falls down depends on the intensity and duration of the rain, as well as the design and condition of the platform. If the rain is light and short-lived, the velocity may not be affected significantly.

When a platform moves at a constant velocity on a horizontal surface, it means that it is moving at a steady speed without any changes in its direction or acceleration. However, if there is a sudden rain that falls down on the platform, the velocity of the platform may be affected in different ways depending on the intensity and duration of the rain.
If the rain is light and only lasts for a short period of time, the velocity of the platform may not be affected significantly. The rain may create some friction on the surface of the platform, which may slightly slow down its velocity, but it may not be noticeable.
However, if the rain is heavy and lasts for a longer time, the velocity of the platform may be significantly reduced. This is because the rainwater may accumulate on the surface of the platform and create more friction, which will slow down the movement of the platform. Additionally, if the platform is not designed to handle wet conditions, it may also experience some mechanical issues that can affect its velocity.
In summary, the velocity of the platform after a sudden rain falls down depends on the intensity and duration of the rain, as well as the design and condition of the platform. If the rain is light and short-lived, the velocity may not be affected significantly. However, if the rain is heavy and lasts for a long time, the velocity may be reduced due to increased friction and potential mechanical issues.

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Explanation:

Its organism are one cell I think

Answer:

Montesquieu called the idea of dividing government power into three branches the "separation of powers." He thought it most important to create separate branches of government with equal but different powers. That way, the government would avoid placing too much power with one individual or group of individuals.

Explanation: