a factory uses a motor and a cable to drag a 300kg machine to the proper place on the factory florr. what power must the moto supply to drag the machine at a speed of 0.5 m/s

The correct period of the orbit is approximately \(4.227 \times 10^4\) seconds, the speed of the satellite is approximately 1.208 km/s, the acceleration of the satellite is approximately \(1.704 \times 10^{-3} m/s^2\).

To solve this problem, we need to consider the following:

(a) Find the period of the orbit.

The period of an object in circular orbit can be found using the following formula:

\(T = 2\pi\sqrt{(r^{3} /GM)}\)

Where:

The distance between the satellite and the Earth's surface is given as \(2.20 \times 10^6 m\). However, we need to convert it to the distance from the center of the Earth by adding the radius of the Earth (approximately \(6.371 \times 10^6 m\)) to the altitude:

r = altitude + radius of Earth

r = \(2.20 \times 10^6 m + 6.371 \times 10^6 m\)

r = \(8.571 \times 10^6 m\)

Now we can substitute the values into the formula:

\(T = 2\pi\sqrt{((8.571 \times 10^6 m)^{3} /(6.674 \times 10^{-11} m^{3} /(kg.s^{2} ) \times 5.972 \times 10^{24} kg))\)

Calculating this, we find:

\(T = 4.227 \times 10^4 s\)

Therefore, the correct period of the orbit is approximately \(4.227 \times 10^4\)seconds.

(b) Find the speed of the satellite.

The speed of the satellite can be calculated using the formula:

\(v = (2\pi r) / T\)

Substituting the values, we have:

\(v = (2\pi \times 8.571 \times 10^6 m) / (4.227 \times 10^4 s)\)

Calculating this, we find:

\(v = 1.208 km/s\)

Therefore, the speed of the satellite is approximately 1.208 km/s.

(c) Find the acceleration of the satellite.

The acceleration of the satellite in circular motion is given by the centripetal acceleration formula:

\(a = v^{2} / r\)

Substituting the values, we have:

\(a = (1.208 km/s)^{2} / 8.571 \times 10^6 m\)

Calculating this, we find:

\(a = 1.704 \times 10^{-3} m/s^{2}\)

Therefore, the acceleration of the satellite is approximately \(1.704 \times 10^{-3} m/s^2\).

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Answer:

6. False 7. True 8. False (Unbalanced forces acting upon an object changes the object's motion) 9. False 10. True (I'm not 100% sure if these answers are right though.)

Answer:

I confirm that answer LOL

Explanation:

This is due to the fact that for waves to be conserved when they move from one area to another, the absolute wave duration must remain constant.

For instance, a wave comes back upside down when it hits a fixed end. A wave returns in the same direction it came when it hits a free end.

According to research, waves break when their amplitude reaches a critical point at which a significant portion of their wave energy is converted into turbulent kinetic energy, much like a ball rolling down a hill. The right end is fastened and tightly secured. The wave returns as a downward-displaced pulse after reflecting off this fixed end. Inversion happens when a reflection hits a fixed end.

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Answer:

Mushroom are healthy and they are good your body and energy and other very important health proteins and stuff but it shouldn't only focus on mushrooms because they won't help you survive for your whole life.

Answer:

lol

Explanation:

it was funny

Explanation:

Nasa picture po ang answer

Answer:

D

Explanation:

Among the given options, cultural differences are most likely to be the centrifugal force within the EU in the future. The EU is a political and economic union of 27 member states, and cultural differences among its member states have always been present.

With the increasing number of immigrants from different parts of the world, the cultural differences among EU member states are becoming more prominent. Each member state has its unique language, history, customs, and traditions, which can create misunderstandings and conflicts among the member states.
The EU aims to promote unity and solidarity among its member states, but cultural differences can lead to a lack of understanding and trust between them. The EU's diverse cultural heritage is both a strength and a challenge for the union. The EU needs to find a way to respect the cultural diversity of its member states while maintaining its unity.
However, the cultural differences among the member states can still cause tensions and conflicts in the future. Therefore, it is crucial for the EU to continue to foster cultural awareness and understanding among its member states to maintain the union's cohesion and stability.

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complete question:

Which of these is most likely to be a centrifugal force within the EU in the future?

a. trade barriers

b. closed borders

c. pollution problems

d. cultural differences

The word "love" can have various contextual meaning. It can be a great affection to a person or to a pet. Or the strong desire and devotion towards any physical things or any actions or habit.

"Love" cannot be defined in a single sentence or term. It can be towards anything in world. The great affection and feeling towards a person or thing can be called as love.

The unselfish benevolence and devotion to to something is love. Similarly passion on any thing like in music , dance, painting can be called as love on it.

Similarly great respect and wish to belong with someone and living for them with strong affection is what called love.

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Answer:

It is the same

Explanation:

I Jsut know

The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)

The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.

To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).

The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).

In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).

Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.

If co > co_critical, the system is considered overdamped (Option E).

If co = co_critical, the system is considered critically damped (Option D).

If co < co_critical, the system is considered underdamped (Option C).

Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.

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Answer:

w = 706.32 [N]

Explanation:

The force due to gravitational acceleration can be calculated by means of the product of mass by gravitational acceleration.

w = m*g

where:

w = weight [N] (units of Newtons)

m = mass = 72 [kg]

g = gravity acceleration = 9.81 [m/s²]

Then we have:

\(w = 72*9.81\\w = 706.32 [N]\)

Part A - The apparent displacement of the mark is 4 cm.

The refractive index of a material, n = real depth, D/apparent depth, L.

So, n = D/L

Since the refractive index of the triangular glass prism is 1.5, n = 1.5. Also, the triangular glass prism is 12 cm thick and placed on a mark on a piece of paper resting on a horizontal bench. So, the real depth of the mark on the piece of paper through the triangular prism is D = 12 cm and its apparent depth is L.

Since n = D/L,

making L, subject of the formula, we have

L = D/n

Substituting the values of the variables into the equation, we have

L = D/n

L = 12 cm/1.5

L = 8 cm

so, the apparent depth of the mark is 8 cm.

So, the apparent displacement of the mark is d = D - L = 12 cm - 8 cm = 4 cm

Thus the apparent displacement of the mark is 4 cm.

Part B - The refractive index of water, n = 1.33.

The refractive index of a material, n = real depth, D/apparent depth, L.

So, n = D/L

Since the depth of water in the jar is 24 cm, the real depth, D = 24 cm.

Also, the bottom of the jar appears to be raised by 6 cm. So, the apparent depth, L = 24 cm - 6 cm = 18 cm

Since n = D/L, the refractive index of water n = D/L

Substituting the values of the variables into the equation, we have

n = D/L

= 24 cm/18 cm

= 1.33

So, the refractive index of water, n = 1.33.

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A 1Msun star in a closed binary system with a 2Msun star.

Systems in which the two stars are close to each other are called close binary star system.

The most massive stars have the shortest lifespans. The reason is that they have most fuel, they burn it so enormously that their lifetimes are very short. As a 1Msun star in a closed binary system with a 2Msun star becomes the massive star so it has the shortest life expectancy.

a. No, an isolated 1Msun star has not the shortest life expectancy.

b. No, a 1Msun star in a closed binary system with a 0.8Msun star has not the shortest life expectancy.

c. Yes, A 1Msun star in a closed binary system with a 2Msun star has the shortest life expectancy.

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d. 2 and 4. The student listed assertions 2 and 4 inaccurately. The particles of the medium are not carried along by waves as they move through empty space; rather, waves move across empty space by transferring energy from one particle to the next.

1. Right. As sound waves in the air or water waves through the ocean, waves may convey energy via a material.

2. Inaccurate. Electromagnetic waves are one type of wave that may pass through nothing.

3. Right. When an energy source generates a vibration, such as when a guitar string vibrates to produce sound, waves are produced.

4. Inaccurate. The particles of the medium are not carried by waves as they move through it; instead, energy is transferred from one particle to the next. We refer to this as wave propagation.

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The nebular hypothesis describes that when a cloud collapses into a star system a new star is forming inside this glowing cloud of gas.

The nebular theory proposes that a rotating cloud of material called a nebula, composed primarily of light components, flattened into a protoplanetary disc and developed into a solar system made up of a star and circling planets.

The Sun originated independently from a collapsing cloud of gas and dust, and as the planets passed by it later, they were gravitationally pulled in.

Individual stars and their planets develop from the revolving clouds' flattening into protostellar discs.

Most of the angular momentum is transmitted into the residual accretion disc through an unidentified mechanism that is thought to be related to the powerful magnetic fields associated with a newborn star.

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\(P=U.I => I=\frac{P}{U}=\frac{1500}{110}=\frac{150}{11}<A>\\I=\frac{U}{R}=> R=\frac{U}{I} = \frac{110}{\frac{150}{11} }=8.06< ohm>\)

The answer is: A. 8.06 ohm

ok done. Thank to me :>

Answer:oxygen is converted to chemical energy

Explanation:

I got it right

Answer: Specifically, if an object changes direction in its journey, the total distance traveled will be greater than the magnitude of the displacement between those two points.

Explanation: I Hope that was helpful! (Please mark as brainliest.)

Answer:

horizontal velocity remaing constan thorough out the motion but the vertical motion's velocity changes due to the gravity acting on it.

for everl 1 second the velocity decreases by 9.8 that is the gravity

A.

Smooth-skinned earthworms have a body made up of numerous tiny segments. The lines designating the segments are visible on the body. Each segment possesses tiny, stiff hairs that aid in the worm's movement; occasionally, the hairs are difficult to perceive. They lack a skeleton yet have a large number of muscles.

B.

Because they lack lungs, earthworms breathe through their skin. For dissolved oxygen to enter their bloodstream, their skin must be damp. The mucus-coated skin of earthworms makes them dependent on a wet, moist environment to survive.

C.

The earthworm's characteristic crawling movement is caused by the action of muscles in the body wall. These lengthen and shorten the body in wavelike motions. Four pairs of tiny hard bristles on each segment help the worm grip the ground and hold onto the side of the burrow.

D.

Blackbirds, robins, and song thrushes are ground feeders, and for them, a worm is the only food that compares to it in taste. Large eyes and powerful bills let all of them to see in the early morning light, when earthworms are most active close to the surface. Their strong bills also allow them to pull struggling earthworms from the soil.

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Answer: it is called a open circuit

Explanation:

Answer:

2.72m/s²

Explanation:

Given parameters;

Mass of box  = 27.8kg

Force on box  = 75.7N

Unknown:

Acceleration  = ?

Solution:

Force is the product of mass and acceleration;

   Force  = mass x acceleration

Now insert the parameters and solve;

    75.7  = 27.8 x a

       a = \(\frac{75.7}{27.8}\)  = 2.72m/s²

Answer:

So work require will be 3888×10×10³J

Explanation:

⇒Work done=Change in kinetic energy

⇒KE=1/2mv²

⇒Mass->15000kg

⇒Velocity->72km/h

⇒KE=1/2×15000×(72)²

⇒KE=1/2×15000×5184

⇒KE=7500×5184

⇒KE=3888×10×10³J

Answer:

\(9.8\; {\rm J}\), assuming that the gravitational field strength is \(g = 9.8\; {\rm N \cdot kg^{-1}}\).

Explanation:

Notice that both the speed and the direction of motion of this block are constant. In other words, the velocity of this block is constant.

By Newton's Second Law, the net force on this block would be \(0\). External forces on this block should be balanced. Thus, the magnitude of the (downward) weight of this block should be equal to the magnitude of the (upward) force that the boy applies on this block.

Let \(m\) denote the mass of this block. It is given that \(m = 1\; {\rm kg}\). The weight of this block would be:

\(\begin{aligned}\text{weight} &= m\, g \\ &= 1\; {\rm kg} \times 9.8\; {\rm N \cdot kg^{-1}} \\ &= 9.8\; {\rm N}\end{aligned}\).

Hence, the force that the boy applies on this block would be upward with a magnitude of \(F = 9.8\; {\rm N}\).

The mechanical work that a force did is equal to the product of:

The displacement of this block (upward by \(s = 1\; {\rm m}\)) is in the same direction as the (upward) force that this boy had applied. Thus, the work that this boy had done would be the product of:

\(\begin{aligned}\text{work} &= F\, s \\ &= 9.8\; {\rm N} \times 1\; {\rm m} \\ &= 9.8\; {\rm J}\end{aligned}\).

a) Using energy methods and assuming negligible air resistance, the speed of the ski at the base of the incline is approximately 34.1 m/s. b) The ski will travel approximately 110.6 m along the level snow.

a) When the ski descends the gradient, its original potential energy is transformed into kinetic energy. Friction causes part of this energy to be wasted, which reduces the ski's speed at the bottom of the hill. The ski's ultimate kinetic energy may be calculated by subtracting the work done by friction from its starting potential energy using the laws of energy conservation. b) The ski only has kinetic energy left as it reaches the bottom of the gradient since all of its potential energy has been expelled. The ski's kinetic energy is transformed into thermal energy as it travels down the flat snow by the frictional force pressing on it, slowing it down until it ultimately comes to a stop. making use of energy saving once more.

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Answer:

the attraction between N and S poles

A box is pushed across a rough horizontal floor by a force acting parallel to the floor in the direction of motion. A force doing negative work on the box pushed across a rough horizontal floor is friction.

So, the correct answer is C.

As the box is moved by an applied force parallel to the floor, friction opposes the motion, acting in the opposite direction.

This opposition causes the frictional force to do negative work, as it resists the movement and reduces the box's kinetic energy.

Meanwhile, (a) gravity and (d) the normal reaction force act perpendicular to the motion, resulting in no work being done by these forces. (b) The applied force does positive work, contributing to the box's motion. (e) A fictitious force is not applicable in this scenario.

Hence, the answer of the question is C

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Asteroids can have various surface features, including craters, ridges, and grooves, which are often the result of impacts from other asteroids or collisions with other celestial bodies.

Sure, I'd be happy to help you with your question!

The characteristics of asteroids include the following:

1. Size: Asteroids can vary in size, ranging from small rocky fragments to larger bodies several hundred kilometers in diameter.

2. Composition: Most asteroids are composed of rocky and metallic materials, similar to the composition of the Earth's crust. Some asteroids may also contain small amounts of water and organic compounds.

3. Orbit: Asteroids orbit the Sun, typically in the asteroid belt located between Mars and Jupiter. However, some asteroids can have orbits that bring them closer to Earth.

4. Shape: While most asteroids are irregularly shaped, some larger asteroids may have a more rounded or elongated shape.

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