A space station travels 5000 kilometers in 4 hours. What is its speed?
Group of answer choices

20000 kilometers/hour

12500 kilometers/hour

2000 kilometers/hour

1250 kilometers/hour

Explanation:

Yes , Both liquid water and steam exist at 100°C

Hope it will help you

Answer:

The force of Static Friction

Explanation:

The friction that prevents an object from actually moving (starting to slide) is the force of Static Friction

Electricity is defined as the flow of electrical current through a conductor.

A fundamental type of energy that is produced by the presence and movement of electric charge is electricity. The passage of electrons or other charged particles across a conductor, like a wire, is what defines the phenomena. It includes the creation, transmission, and use of electric energy, as well as the full field of electric phenomena.

Therefore,

Electricity is defined as the flow of electrical current through a conductor.

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Answer:

23.11

Explanation:

accellus

The focal length of the lens is approximately 115.3 cm. The explaination is  explained below.

To find the focal length of the lens, we can use the lens formula:

1/f = 1/v - 1/u

Where:

f is the focal length of the lens

v is the distance of the image from the lens

u is the distance of the object from the lens

Given:

v = 38.5 cm

u = 57.8 cm

Let's substitute these values into the formula:

1/f = 1/38.5 - 1/57.8

Now, let's calculate the right side of the equation:

1/f = (57.8 - 38.5) / (38.5 * 57.8)

= 19.3 / (2223.3)

≈ 0.008677

Now, we can find the focal length (f) by taking the reciprocal of both sides:

f = 1 / (0.008677)

≈ 115.3 cm

Therefore, the focal length of the lens is approximately 115.3 cm.

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An artificial Earth satellite in an elliptical orbit experiences its greatest centripetal acceleration when it is closest to Earth, at the perigee point of its orbit.

When a satellite is in an elliptical orbit around Earth, its distance from Earth varies throughout its orbital path. The point in the orbit where the satellite is closest to Earth is called the perigee. At this location, the satellite experiences the greatest centripetal acceleration.

Centripetal acceleration is the acceleration directed towards the center of the orbit, which is necessary to keep the satellite in its circular or elliptical path. It is caused by the gravitational force between the satellite and Earth. The closer the satellite is to Earth, the stronger the gravitational force acting on it, resulting in a larger centripetal acceleration.

As the satellite moves away from the perigee and reaches the apogee, the farthest point from Earth in its orbit, the gravitational force weakens, leading to a decrease in centripetal acceleration. Therefore, the perigee, where the satellite is closest to Earth, is the location where the greatest centripetal acceleration occurs in an elliptical orbit.

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Answer:

The frequency of the sound wave is 800Hz

The speed of sound in a is about 340m/s.

Velocity = frequency x wavelength

making wavelength the subject formula

wavelength = Velocity/frequency.

wavelength = 340/800

wavelength = 0.425m.

When a uniform rope hangs from a ceiling and you give the bottom of the rope a wiggle, the speed of the wave as the wave travels up the rope will remain constant.

A wave is a transfer of energy in which energy travels through a medium without the medium itself traveling. When the medium is influenced, this energy transmission can either be a mechanical wave, such as sound waves, or an electromagnetic wave, such as radio waves or light waves.

The way that waves transmit energy determines the characteristics of the wave.

The speed of the wave as it travels up the rope will remain constant due to the transverse nature of the wave that travels along a rope.

When a wave travels along a rope, the particles in the rope move perpendicular to the wave's direction. This is because the wave travels along a transverse plane, which means that it oscillates up and down at right angles to its propagation direction.

As a result, the rope will experience both compression and rarefaction, which will cause the wave to travel along the length of the rope in a manner that will maintain the speed of the wave constant.

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Answer:

20 cm and 180° of angular displacement

Explanation:

In this case, the displacement of a tip in an one hand clock is always twice the length of the hand, therefore:

D = 2 * L

D = 2 * 10

D = 20 cm

Now, we should note that from 12:15 am to 12;45 pm, the clock covers around 12.5 revolutions, and from here can calculate the angular distance:

AD = 12.5 * 360° = 4500°

And the angular displacement (A data you need to complement the displacement of the tip), is half a revolution so, if a revolution covers 360 ° then:

α = 1/2 * 360 = 180°

Hope this helps

Answer:

HEAT?

Explanation:

A person gets a suntan on a beach is not an example of convection. Therefore, the correct option is option C.

The process of convection involves the movement of such a heated fluid, including such air or water, in order to transfer heat. Natural convection is caused by the fact that most fluids have a propensity to expand when heated, becoming less dense and rising due to the increased buoyancy.

Natural convection is caused by the fact that most fluids have a tendency to expand when heated, becoming less dense and rising due to the increased buoyancy. The air inside a heated room or the water inside a kettle are heated uniformly thanks to circulation brought on by this effect. A person gets a suntan on a beach is not an example of convection.

Therefore, the correct option is option C.

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Your question is incomplete but most probably your full question was,  

Which one of the following is not an example of convection?

a) Smoke rises above a fire.

b) An eagle soars on an updraft of wind.

c) A person gets a suntan on a beach.

d) Spaghetti is cooked in water.

e) An electric heater warms a room.  

ω₁ = ω₂ = ω₃ Every particle rotates about the axis of rotation with a constant angular velocity (ω). The rank for velocity is v₃ > v₂ = v₁ because = r and r₁ = r₂<r₃.

A pseudovector used to express how quickly the angular location or orientation of an item changes over time is called an angular velocity or rotational velocity ( or ). (i.e. how quickly an object rotates or revolves relative to a point or axis). The pseudovector's direction is normal to the instantaneous plane of rotation or angular displacement, and its magnitude corresponds to the object's angular speed, or the rate at which it rotates or revolves. The right-hand rule is typically used to specify the direction of angular motion.

The angular velocity comes in two flavors.

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When heated from 200C to 600C, 300 kg of iron gains or loses 5,376,000 J of specific heat.

How much heat a sample absorbs or loses can be calculated using the equation q = mcT, where m is the mass of the sample, c is the specific heat, and T is the temperature change (q).

We can use the following calculation to calculate how much heat 300 kg of iron will gain or lose when heated from 200C to 600C:

Q = m * c * ΔT

Given:

m = 300 kg

c = 448 J/(kg⁰C)

ΔT = 60⁰C - 20⁰C = 40⁰C

When we use the formula with these values, we get:

Q = 300 kg * 448 J/(kg⁰C) * 40⁰C

Q = 5,376,000 J

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Answer:

Earths shadow covering the moon would create a lunar eclipse.

Explanation:

because i just know

A lunar eclipse is occur when Earth’s shadow is covering the moon.

An eclipse happens when one astronomical body like Earth or moon blocks light from or to another.

A lunar eclipse is caused by Earth blocking sunlight from reaching the moon and causing a shadow across the lunar surface.

Sometimes when the Moon orbits Earth, the Moon moves between the Sun and Earth. When this happens, the Moon blocks the light of the Sun from reaching Earth. This causes an eclipse of the Sun, or a solar eclipse.

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A cart moving at a constant speed of 25 m/s possesses 438 J of kinetic energy, and the mass of the car is 1.6 kg.

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object to accelerate it. We must put in the effort to apply force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

Definition: When an object is moving at a constant speed—that is, its speed does not change—we say it is moving at a constant speed. steady rate

Given:

KE = 500 J

v = 25 m/s

The formula for Kinetic Energy is given:

KE = ½ mv²

where: KE - Kinetic Energy

m - mass

v - velocity

Substituting the value of KE and v in the formula,

500 J = (½)(m)(25 m/s)²

m = (500 J)(2)/(25 m/s)²

m = 1.6 kg

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Answer:

2.5 m/s²

Explanation:

Given,

Initial speed ( u ) = 10 m/s

Final speed ( v ) = 20 m/s

Time ( t ) = 4 seconds

To find : Acceleration ( a ) = ?

Formula : -

a = ( v - u ) / t

a = ( 20 - 10 ) / 4

= 10 / 4

= 5 / 2

a = 2.5 m/s²

Therefore,

The acceleration of the scooter is 2.5 m/s²

Our Solar System is located in the Milky Way Galaxy. It is a barred spiral galaxy containing billions of stars and other celestial objects. The Milky Way is approximately 100,000 light-years in diameter and has a central bulge with four spiral arms that extend outward, each containing gas, dust, and stars.

Sun is a part of the Milky Way's Orion Arm, which is about 27,000 light-years from the galactic center. As the Milky Way rotates, our Solar System moves around the galaxy's center at a speed of about 220 kilometers per second.

The Milky Way is part of a group of galaxies called the Local Group, which also includes the Andromeda Galaxy, the Triangulum Galaxy, and several other smaller galaxies. The Local Group is part of the larger Virgo Supercluster of galaxies, which is itself part of the even larger Laniakea Supercluster.

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Answer:

I think C? I'm not sure totally though...

Explanation:

When the light beams that have been reflected or refracted actually touch after reflection or refraction, a true image is created. On a screen, an actual image can be obtained.

projection screen, a surface used to display an optical projector's picture. The main criteria for materials to be used as screens is a high level of reflection. The lenticular, glass bead, and mat white screens are the three most popular kinds of screens.

To generate a picture visible to a human eye, pixels on electrical devices can emit light, filter light, or reflect light. Here is an output from a laser printer that has been enlarged. The output of an inkjet printer printer is magnified below. The dots that make up the finished image can be seen.

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The total amount of passive losses that may be deducted during the current year is $4,000. In order to determine the total amount of passive losses that may be deducted during the current tax year, we need to first calculate the net passive loss.

To do this, we need to subtract the passive income from the passive losses for each type of limited partnership separately.

For the publicly traded limited partnership, the net passive loss is $9,000 ($12,000 passive income - $9,000 passive loss = $3,000 net passive income).

For the nonpublicly traded limited partnership, the net passive loss is $4,000 ($14,000 passive income - $18,000 passive loss = -$4,000 net passive loss).

Since there is a net passive loss for the nonpublicly traded limited partnership, we can use this to offset any passive income from other sources.

Therefore, the total amount of passive losses that may be deducted during the current year is $4,000.

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The voltage is stepped up before being transmitted from a power station through overhead power lines to the consumer in order to reduce power loss and make the overhead power lines lighter, less expensive to build.

Here is the explanation why voltage is stepped up before being transmitted from a power station through overhead power lines to the consumer:

Power loss is inversely proportional to the square of the current. This means that if we can reduce the current, we can also reduce the power loss.

The current is inversely proportional to the voltage. This means that if we increase the voltage, we can reduce the current.

Therefore, by increasing the voltage, we can reduce the power loss.

In addition, the higher the voltage, the smaller the cross-sectional area of the conductors needed to transmit the same amount of power. This makes the overhead power lines lighter and less expensive to build.

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There are five lumbar vertebrae situated in the lumbar region of the spine.

Brief about five lumbar vertebrae situated in the lumbar region?

Therefore, There are five lumbar vertebrae situated in the lumbar region of the spine.

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Answer:

x + 7 = 10

Explanation:

When we put the value of x = 3 in equation x + 7 = 10, we get, LHS = 3 + 7 = 10 = RHS

Hence, x = 3 is the solution of the equation x + 7 = 10

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Answer: I think cars are designed to have crumble zone because lets say you're going 60-70 mph and you hit a brick wall that cant move, it would be a very hard jolt causing the beings inside to get thrown forward, but if it has a crumble zone it would slow the the jolt from is slowing down in the hit.

Planet Gu, located approximately 2 AU from its host star, completes one orbit in approximately 4.43 Earth years.

The time taken by a planet to complete one orbit, known as its orbital period, can be determined using Kepler's third law of planetary motion. This law states that the square of a planet's orbital period is proportional to the cube of its average distance from the host star. In this case, Planet Gu is located approximately 2 AU from its host star.

To calculate the orbital period, we can use the equation:

\(T^2 = (4\pi ^2/GM) * r^3\)

where T represents the orbital period, G is the gravitational constant, M is the mass of the host star, and r is the average distance between the planet and the star.

Since the planet is moving along its orbit at a constant speed, we can assume that it has a roughly circular orbit. Therefore, the average distance between the planet and the star is equal to its distance of 2 AU.

Plugging in the values and solving for T, we find:

\(T^2 = (4\pi ^2/GM) * (2 AU)^3\)

Using the appropriate values for G, M, and converting AU to kilometers, we can calculate the orbital period T. The result is approximately 4.43 Earth years.

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Answer:

B. False

Explanation:

Involvement is not the stage where an actual relationship begins.

Rather, involvement is a stage in the process of forming a relationship, where individuals have established mutual interest and are exploring the possibility of a deeper connection.

The actual relationship begins once the individuals have made a commitment to each other and have established a sense of exclusivity or partnership.

Any of a clear glass plate, metal plate or brown paper can be stuck into the circle to help people notice the door (option D).

A glass door is a door made of glass, usually in a wood or metal frame.

Glass doors are a gorgeous way of opening up a home to create more visual space and brighten up any room. Letting in natural light not only looks beautiful, but helps to save on electricity as well.

Toughened glass doors provide a safe, sturdy and stylish solution for interior doors in your homes or offices.

Glass doors are an especially nice option for homeowners with pets, particularly cats or dogs who like to look outside and watch the natural wildlife roam about.

According to this question, the above image shows glass doors that fit into many offices. However, sometimes, people in a hurry may not see them and bang into them.

Therefore, option D is the best and correct option.

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Answer:

D

Explanation:

D

Answer:

transverse i think

Explanation:

Answer: See below

Explanation:

a) Using Newton's 2nd Law, rearranging and solving for acceleration

\(a &= \frac{F}{m}\\ &= \frac{25\ \text{N}}{0.5\ \text{kg}}\\ &= \boxed{50\ \text{m/s}^2}\)

b) Using the acceleration 50 m/s^2 and the initial velocity v = 0 (since the object starts from rest), the final velocity at t = 20, v can be determined using a suitable equation as follows:

\(v &= u+ at\\ &= 0+ 50\ \text{m/s}^2(20\ \text{s})\\ &= \boxed{100\ \text{m/s}}\)

c) To determine the distance s traveled in the 20 seconds, we'll use a suitable equation:

\(s &= ut+\frac{1}{2}at^2\\ &= 0+\frac{1}{2}(50 \text{m/s}^2)(20\ \text{s})^2\\ &= \boxed{10\ 000\ \text{m}}\)