satellites in near-earth orbit experience a very slight drag due to the extremely thin upper atmosphere. these satellites slowly but surely spiral inward, where they finally burn up as they reach the thicker lower levels of the atmosphere. the radius decreases so slowly that you can consider the satellite to have a circular orbit at all times.

Answer:

μ = 0.55

Explanation:

Given:

m = 43 kg

a = 0.79 m/s²

F pull = 265 N

_____________

μ - ? Friction coefficient

2 Newton's law:

m·a = Fpull  - μ·m·g

μ·m·g = Fpull - m·a

Friction coefficient:

μ = (Fpull - m·a) / (m·g)

μ = (265 - 43·0.79) / (43·9.8) ≈ 0.55

Answer:

A. Because only Mercury and Venus orbit closer to the Sun than we do.

Explanation:

From the earth, the only planetary transits we can see are those of Mercury and Venus, because those are the only planets that can be between us and the sun.

Answer:

a) Because only Mercury and Venus orbit closer to the Sun than we do.

Explanation:

We can’t see planetary transits from planets in our solar system other than Mercury and Venus because, only Mercury and Venus orbit closer to the Sun than we do. Hence, the option (a) is correct.

The undamped natural frequency, the damping ratio and the damped natural frequency are 3.162 rad / s, 0.211 and 3.098 rad / s respectively.

ωn = √ ( k / m )

ζ = c / 2 √ k m

ωn = Undamped natural frequency

k = Stiffness

m = Mass

ζ = Damping ratio

c = Damping co-efficient

m = 150 kg

k = 1500 N / m

c = 200 kg / s

ωn = √ ( 1500 / 150 )

ωn = 3.162 rad / s

ζ = 200 / 2 √ ( 1500 * 150 )

ζ = 0.211

Since ζ < 1,  the system is underdamped and the solution will oscillate.

ωd = ωn √ ( 1 - ζ² )

ωd = Damped natural frequency

ωd = 3.162 √ ( 1 - 0.211² )

ωd = 3.162 √ 0.96

ωd = 3.162 * 0.98

ωd = 3.098 rad / s

Therefore,

The given question is incomplete. The complete question is:

A spring-mass-damper system has mass of 150 kg, stiffness of 1500 N/m and damping coefficient of 200 kg/s. Calculate the undamped natural frequency, the damping ratio and the damped natural frequency. Is the system overdamped, underdamped or critically damped? Does the solution oscillate?

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The net force acting on the airplane is 25N.

Forces acting on the paper airplane when it is in the air:

Given.

Weight of the paper airplane, F1 = 16N

The force of air resistance, F2 = 9N

Net force = F1 + F2

Net force = 25N

Thus, the net force acting on the airplane is 25N.

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The larger the frequency of a photon of light, the increase the energy of the photon.

As frequency increases, the energy of emitted photons will increase. The opposite is also actual. as the frequency of radiation decreases, there may be a corresponding lower in the power of emitted photons.

The higher the frequency, the more energy the photon has. Of path, a beam of mild has many photons. This means that absolutely intense purple light can bring more electricity to a given area than less severe blue light.

The quantity of energy is directly proportional to the photon's electromagnetic frequency and consequently, equivalently, is inversely proportional to the wavelength. The better the photon's frequency, the better its energy. Equivalently, the longer the photon's wavelength, the decrease its power.

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8100 kgm/s is a possible value for the boat's momentum at t- 3.0 s after the engine had started

m=1000kg

a=2.7 m/s^2

t=3

I=F/t

I=2700/2

I=900

F×t=P

P = momentum

t=time

f= force

F×t=P

P=2700×3

P=8100 kgm/s

Momentum is the result of a particle's mass and velocity combined. A vector quantity with both magnitude and direction is momentum. A particle's force is equal to its rate of change in momentum over time, which is stated in Isaac Newton's second equation of motion.

Any grouping of particles has a momentum equal to the vector sum of its momenta. The third law of Newton asserts that forces between particles are equal and opposite, and that any change in one particle's momentum is totally counterbalanced by a similar change in another particle's momentum.

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The force that must be applied down at an angle of 37.8° to the horizontal to make the box start moving is 3.99 N.

Force is obtained by multiplying the mass of a body by its acceleration.

To calculate the force that must be applied to make the box start moving, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the force that must be applied to the box is 3.99 N.

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The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.

Density :

Density is calculated as:

Density = mass/volume

ρ = m/v

where,

ρ = density of the substance

m = mass of the substance

v = volume of the substance

ρ = m/v

ρ = 20.0/4.0

ρ = 5g/ml

so, density is 5g/ml.

The density of a substance with a mass of 20. 0 g and a volume of 4. 0 ml is 5g/ml.

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The image below provides the solution. To read the text, enlarge the jpeg.

To find the answers learn collision and magnitude.

What is magnitude?

The most straightforward way to define magnitude is "distance or quantity." In either an absolute or relative sense, it displays the size or motion of an object. It serves as a way to convey the size or scope of something. The majority of the time, magnitude refers to a length or size.

What is collision?

Collision, also known as impact, is the sudden, violent coming together of two bodies in direct contact, such as two pool cues, a golf club and a ball, a hammer and a nail, two railroad cars when coupled, or a falling object and a floor.

This is a completely inelastic collision , but Eq. 9−53 (V=m₁/m₁+m₂ V₁i)

is not easily applied since that equation is designed for use when the struck particle is initially stationary. To deal with this case (where particle 2 is already in motion), we return to the principle of momentum conservation:

m₁ V^→₁+m₂V^→₂=(m₁+m₂) V^→ ⇒  V^→ =2(4i-5j)+4(6i-2j)/2+4

(a) In unit -vector notation , then  V^→ =(2.67m/s)i+(-3.00m/s)j

(b) The magnitude of   V^→ is |V^→| =4.01m/s

(c) The direction of   V^→ is 48.4°c (measured clockwise, from the + x axis)

Therefore, unit -vector notation , then V^→ =(2.67m/s)i+(-3.00m/s)j, the magnitude of   V^→ is |V^→| =4.01m/s, the direction of   V^→ is 48.4°c (measured clockwise, from the + x axis)

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Answer:

The ball would fall vertically for 112.45m

Explanation:

The vertical height of a horizontal throw is affected only by the speed of the throw and the acceleration due to gravity.

At this point, we may use this formula to determine the vertical height of the throw

vertical height =

The initial throwing speed has to be converted to m/s to ensure uniformity during the calculations. To do this we multiply by 1000 and divide by 3600

169.1km/hr = 46.972m/s

Maximum height =  m

The pitch would make the ball fall vertically for 112.45m by the time it reached the home plate 18.2 m away

Answer:

The ball's vertical displacement 5.7 cm

Explanation:

Given:

V₀ = 169.14 m

D = 18.3 m

g = 9,81 m/s²

____________

Δh - ?

Ball flight time:

t = D / V₀ = 18.3 / 169.14 ≈ 0.108 s

The ball's vertical displacement:

Δh = g·t² / 2

Δh = 9.81·0.108² / 2 ≈ 0,057 m    or  5.7 cm

To learn about the velocity and momentum.

What is velocity?

The direction of motion of a body or object is determined by its velocity. In most cases, speed is a scalar variable. In their most basic form, vector quantities are speeds. It measures how quickly a distance changes within an area. What counts is the change in displacement rate.

What is momentum?

Mass in motion is quantified by momentum, or how much mass is moving in how much space. It typically has the letter P.

find

how long would it take to complete the entire project Y each story point is two weeks long ?

The product story point is 410 story points and 18 story points per spirit.

so the number of spirits in the product is given as

the number of spirit = 410/18 =  23

23 spirits

the each spirits take a two weeks, so

the time to complete the entire project = so it take to complete entire project.

Therefore, 23 sprint and each sprint is two weeks in duration.

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The impulse one ball receives is equal to average force on it from the other ball multiplied by the time during which the force is applied

The impulse one ball receives is equal to average force on it from the other ball multiplied by the time during which the force is applied. By newton's third law the force that the rubber ball exerts on the steel ball is equal to the force that steel ball exerts on rubber ball. So the rubber ball receives the same amount of impulse , although the directions of impulse are opposite.

Jx = Fx Δt

Jx = Impulse acting on x

Fx = Average force acting on x ( Answer 1 )

Δt = Period of time

Jrubber = Frubber * Δt

Jsteel = Fsteel * Δt

According to Newton's third law,

Frubber = - F steel ( Answer 2 )

Jrubber = - Fsteel * Δt

Jrubber = - Jsteel ( Answer 3 and 4 )

Therefore, the answers are,

The given question is incomplete. The complete question is:

Suppose a rubber ball collides head-on with a more massive steel ball traveling in the opposite direction with equal speed. Which ball, if either, receives the larger impulse?

The impulse one ball receives is equal to the ___ force on it from the other ball multiplied by the time during which the force is applied. By Newton's third law the force that the rubber ball exerts on the steel ball is ___ the force the steel ball exerts on the rubber ball So the rubber ball receives ___ amount of impulse, although the directions of the impulses are ___

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Here is your Answer:-

If the distance separating the objects is tripled, then what is the new force? Explanation: -The electrostatic force is inversely related to the square of the separation distance. So if d is three times larger, then F is nine times smaller – that is, one-ninth the original value.

Answer:

Explanation:

Given:

r₂ = 3·r₁

________

F₂ / F₁ - ?

According to Coulomb's law:

F₁ = k·q₁·q₂ / r₁²

F₂ = k·q₁·q₂ / r₂²

F₂ / F₁  = (r₁ / r₂)²

F₂ / F₁  = ( r₁ / (3·r₁)² = (1 / 3)² = 1 / 9

Strength will decrease by 9 times

The angle at which a ray of light leaves the other side of a window pane is the same as the angle at which it strikes the glass.

Refraction is the change in direction of a wave when it passes from one medium to another or from a gradual to a sudden change in the medium.

When a wave of light passes from one medium to another, its direction is changed. This phenomenon is called refraction. It occurs because the speed of light is different in different media.

The amount of refraction that occurs depends on the difference in the speed of light in the two media, and the angle at which the light wave is incident on the boundary between the two media. The greater the difference in the speed of light, the greater the amount of refraction. The angle of incidence also affects the amount of refraction; the greater the angle, the greater the refraction.

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There solar and lunar eclipses aren't every month  because the Moon’s orbit is tilted with respect to Earth’s orbit.

When the moon passes between the sun and the Earth, a solar eclipse occurs. As a result, the moon creates a shadow on the Earth by preventing the sun's light from reaching its surface. This takes place in new moon. Up to five solar eclipses can be seen annually.

When Earth passes between the sun and the moon, a lunar eclipse occurs. As a result, the Earth's shadow falls over the moon, preventing the moon from receiving light from the sun. It happens on a full moon day. Up to three lunar eclipses can be seen annually.

The plane of the Moon's orbit around the Earth is tilted by around 5.15° in relation to the plane of the Earth's orbit around the Sun. That's way,  there aren't solar and lunar eclipses every month.

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Because Friction between gas orbiting at different speeds transfers angular momentum, also generating heat.

Friction is nothing but the opposing force acting on the device. In this case when accretion disks moves, it transfers angular momentum and and due to friction it also generates heat.

And as we know from conservations of energy that whatever heat is generated and angular momentum gets transferred, both will act as a negative parameter for a accretion disks.

That is the reason it is vey important to know and take care of the friction during designing or using of accretion disks.

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Answer:

I think the answer is d; as the object is revolving around the earth in a circular motion due to centripetal force provided by gravity and if you "turned off" the gravity then it would tend to continue away from the planet but in the same direction.

In order to prevent the Ferris wheel from accelerate, the forces must be balanced. Newton's first law of motion states that unless an unbalanced force acts upon a body.

it will remain in its state of rest or uniform motion. The Ferris wheel moves at a consistent speed in a vertical circle, as stated in the question. Unbalanced force is what happens when two forces operating in opposition to one another on a body are not of the same size and magnitude and accelerate.

Keep in mind that the constant speed implies that the forces are in balance, as the Ferris wheel would accelerate under an unbalanced force.

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While pulling the speed is 37.24 m/s and distance before 70.76 m

Acceleration due to gravity

a = 9.8 m/s2

a. by the equation of motion

V = U + at

=  0 + (9.8 m/s2) ×(3.8 s)

= 37.24 m/s

b. distance fallen

S = ut + (1/2)at

= 0 + (1/2)×9.8×3.82

= 70.76 m

A parachute acts like a wing on an airplane though it acts with the same force as a human when falling. The T-11's main canopy uses a unique deployment sequence to reduce shock and canopy vibration when opening. The T-11 is designed for an average descent velocity of 19 feet per second for the 95th percentile service member, compared to 24 feet per second for the T-10C.

Even if the main parachute fails he can use his backup parachute to land. There are even tactics you can use to increase your chances of surviving a free fall to Earth if your reserves also fail. So if you have two parachutes of the same size and shape but different materials and one is heavier than the other the heavier parachute will fall faster.

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In 1964 Gell Mann and Zweig introduced a baryonic triplet consisting of three hypothetical particles that are termed as Quarks.

The quark model is able to explain many features of elementary particles and gives a good insight into the structure of baryons and mesons.

Quarks are the fermions as the basic building block if we use fermions then we can get fermions and bosons. These bosons are assumed as antiquark pairs.

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The reason for the sound is the fact that there are other channels that are interfering with the particular channel that she was looking for.

We know that radio waves are part of the electromagnetic waves. These are waves that do not require any material medium for them to become propagated thus they are able to move from one place to another even in a vacuum. Radio waves are known to have a long wavelength thus they can travel a far distance.

Given what we have said, we know that a radio is a device that have been built so as to be able to receive the radio waves. However, there are a number of frequencies that we are looking at that could be received by the radio at the same time. This could be referred to by the use of the word co channel interference.

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Point at which potential energy is being transformed to kinetic energy is point F.

An object has potential energy when it is not in motion. Once a force has been applied, the potential energy changes to kinetic energy.

When an object is released from height, it is naturally pulled down towards the ground by the force of gravity. Object falls towards the ground as potential energy transforms into its kinetic energy.

Potential energy becomes kinetic when the object storing the potential energy starts to move. Since the potential energy is stored in the object, movement would release the energy.

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Answer:

The Tesla moves approx. 25 meters from rest before reaching 60 mi/hr

Explanation:

Given:

Initial velocity = 0 m/s

Final velocity = 26.8 m/s

Time = 1.9 seconds

Acceleration = change in velocity/time

[tex]a = \frac{26.8}{1.9}[/tex]

The equation to find displacement (Δx) with given starting and final velocity, time, and acceleration is:

[tex]x = x_{0} + v_{0}t + \frac{1}{2} at^{2}[/tex]

Starting position and initial velocity both equal 0, so

[tex]x = \frac{1}{2} at^{2}[/tex]

[tex]x=\frac{1}{2} (\frac{26.8}{1.9})(1.9)^{2}[/tex]

x = 25.46m

Rounded to the nearest whole number, x = 25m

The weight or force due to gravity  (Fg) is equal to the sum of the tensions in both wires.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Frictional force allows the ball to stay in the hand while muscular force is employed to stop the motion of the ball during catching. Throughout this activity, the Earth's gravitational pull on the ball is constant.

The weight or force due to gravity  (Fg) is equal to the sum of the tensions in both wires.

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When a spring is only pulled by Bob with 200 N force, the spring stretches 20 cm. If the same spring is pulled by Bob and Carlos with 200 N forces each, the string will stretch 40 cm.

The elasticity is followed the Hooke's Law:

F = kx

Where:

F = force applied

k = spring constant

x = length of extension / compression

From the Hooke's Law, we know that the applied force is directly proportional to the change of length, or

F2 : F1 = x2 : x1

Parameters given in the problem:

F1 = 200 N  (Force applied by Bob)

x1 = 20 cm

F2 = 200 + 200 = 400 N (Forces applied aby Bob and Carlos)

Therefore,

400 : 200 = x2 : 20

x2 = 400 x 20 / 200 = 40 cm

Thus, when both Bob and Carlos pulls the spring, the spring will stretch 40 cm

Complete question:

The left end of a spring is attached to a wall. When Bob pulls on the right end with a 200 N force, he stretches the spring by 20 cm . The same spring is then used for a tug-of-war between Bob and Carlos. Each pulls on his end of the spring with a 200 N force.

How far does the spring stretch?

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Answer:

below

Explanation:

When it is melted , the can undergoes a phase change from a solid to liquid.

The magnitude of a single extra force necessary to keep the rod in its mechanical equilibrium is 20N in the same direction with the 5.0kg blocks' weight force.

A system is in the mechanical equilibrium when it is at rest and the resultant of the force working on the system is equal to zero (0) or no movement happen within the system.

Please take a look at the drawing below.

The existance of 2 blocks attached to each of the rod's ends are enable the rod to move in a circular form. Hence, we could conclude that both of the blocks are giving centripetal forces to the rod.

Centripetal force is the force that works in a system and make a system to move within the curved path. The direction of this force is always perpendicular to the system fixed center point.

On the case, the center point is the center of gravity of rod, where the weight force (W) working in the system. Assuming that the rod is a symetrical solid rod, hence the center point is exatcly at the middle of the rod.

Both of the blocks are giving weight forces to the system with their mass. However since they are differences on their mass, their weight forces are also working differently.

Both of the blocks are working to the system and moving the system into their respective direction, which are the opposite of each other.

Hence, we could conclude that we need to give extra force into one of the block's force direction to balance all the forces working in the system.

Because we want the system to be in its mechanical equilibrium, we have to use the First Law of Newton where the force resultant of the system must be equal to zero (0).

We could write the equation for this system:

∑F = 0

Fs1 - Fs2 + Fs3= 0

(W1 × 1) - (W2 × 1) + (F3 × 1) = 0

(7×10×1) - (5×10×1) + F3 =0

70 - 50 + F3 = 0

F3 = - 20N

Hence, we need to give an extra 20N force in the same direction with the 5.0kg blocks' weight force to make system reaches its mechanical equilibrium.

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Answer:

3 m/s

Explanation:

distance (rise) over time (run) gives speed, that is velocity

it can be found using the gradient (m) formula

m=(y2-y1)/(x2-x1)

m=(15-3)/(4-0) =12/4=3 m/s

Answer:

3 m/s

Explanation:

.....as the answer for your question is 3m/s ..

THANK YOU..