An artificial satellite moves at a steady 25,000 km/hr in a circular orbit around earth. is it accelerated?

5.1.1. The force that the wall will exerts on the car during this time will be 360000N.

5.1.2. The force the wall will now exert will be 120000N.

What is force?
Force is a physical influence that is capable of changing the motion of an object or altering its shape and structure. It is a vector quantity that is measured in newtons and is often described as a push or pull. Force can be caused by many different sources such as gravity, friction, and electromagnetism. Force can also be created through the application of energy, such as when a person pushes an object or when an object is acted upon by a magnetic field.

5.1.1. The force that the wall will exert on the car during the 0.25 seconds is calculated using the equation F=m*a, where F is force, m is mass and a is acceleration.

F = 900 kg * (100 km/h / 0.25 s)

F = 360000 N

5.1.2. The force that the wall will exert on the car during the 0.75 seconds is calculated using the same equation.

F = 900 kg * (100 km/h / 0.75 s)

F = 120000 N

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Answer:

Human-powered generators are the best energy source for the rescue team. Evidence 1: Solar cells transfer energy from the sun to a battery. Evidence 2: Human-powered generators can be used to transfer energy any time someone is there to turn the crank.

hope it helps

pa brainliest po

An energy-capturing bike could potentially be a good solution for a rescue team, but its effectiveness would depend on several factors. Let's consider the pros and cons:

Pros:

1. Portability: A bike is a portable mode of transportation that can navigate through areas where larger vehicles might have difficulty reaching. This is particularly advantageous in rescue operations, where quick access to remote or rugged locations is often essential.

2. Energy Efficiency: The concept of an energy-capturing bike implies that the bike can generate and store energy while in use. If this energy can be harnessed to power essential equipment like communication devices, lighting, or even medical equipment, it can greatly extend the team's operational capabilities without relying solely on external power sources.

Cons:

1. Energy Generation Limits: The energy generated and captured by a bike might not be sufficient to power all the necessary equipment required in a rescue operation, especially if the operation lasts for an extended period or involves energy-intensive devices.

2. Physical Exertion: In rescue scenarios, the team members' physical energy and endurance are of paramount importance. If the energy-capturing system requires the rescuers to exert extra effort while riding the bike, it might negatively impact their overall performance and effectiveness.

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Answer:

Push or Pull

Gravity

Strong Nuclear Force

Weak Force

Explanation:

Answer:

Unlike hard disks, which use magnetic charges to represent 1s and 0s, Compact Disks, DVD's or Blue Rays use reflected light.

Explanation:

The way CD's work is that they are hit by a laser beam which is reflected on the surface of the disc. These disks have some valleys and mountains that reflect light differently so the CD player will interpret these differences in reflection as data which will then be turned into music, videos or computer files.

Answer:The electric field and magnetic field in a plane wave are related by the wave impedance of the medium. In a nonmagnetic medium, the wave impedance is given by:

Z = sqrt(μ0/ε0) = 377 Ω

where μ0 is the vacuum permeability and ε0 is the vacuum permittivity.

The electric field can be related to the magnetic field by:

E = cB/Z

where c is the speed of light in the medium.

Substituting the given values:

E = (3.00 x 10^8 m/s)(yˆ/377)(60e^−10z cos(2π×10^8 t−12z))

Simplifying:

E = yˆ(1.59 x 10^-6)e^-10z cos(2π×10^8 t−12z) V/m

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If the speed of the magnet is doubled, the induced voltage will be four times as great.

According to Faraday's Law of Electromagnetic Induction, the magnitude of the induced voltage in a coil is directly proportional to the rate of change of magnetic flux through the coil. When the speed of the magnet is doubled, the rate of change of magnetic flux through the coil also doubles, resulting in a doubling of the induced voltage.

However, since the induced voltage is directly proportional to the rate of change of magnetic flux, a doubling of the speed of the magnet results in a fourfold increase in the rate of change of magnetic flux, which leads to a fourfold increase in the induced voltage. Therefore, if the speed of the magnet is doubled, the induced voltage will be four times as great. This effect is important in many applications, such as electrical generators, where the speed of the rotor is used to control the output voltage of the generator.

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The correct sequence of energy transfer during electricity generation is from the primary source of energy (such as coal, natural gas, nuclear fuel, or renewable sources like wind or solar) to mechanical energy, then to electrical energy.

The process of electricity generation involves the conversion of one form of energy into another. The primary source of energy, such as coal, natural gas, nuclear fuel, or renewable sources like wind or solar, is used to generate heat, which in turn is used to produce mechanical energy. This mechanical energy is then converted into electrical energy using generators, which use the principles of electromagnetic induction to produce a flow of electrons. The electrical energy is then transmitted through power lines to homes, businesses, and other consumers.

For example, in a coal-fired power plant, the coal is burned to produce heat, which is used to generate steam. The steam then drives a turbine, which produces mechanical energy that is used to spin a generator, producing electrical energy. This electrical energy is then transmitted through power lines to consumers. In the case of renewable sources such as wind or solar power, the primary source of energy is directly converted into electrical energy using turbines or photovoltaic cells, respectively.

Therefore, the correct sequence of energy transfer during electricity generation is from the primary source of energy to mechanical energy, then to electrical energy.

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The speed of water spray from the hose after partially blocking it is 8.8 m/s

Diameter of hose, d = 3.3 cm

Water flows from the hose with a speed of, v₁ = 1.1 m/s

Partially block end of the hose, diameter = 0.72 cm

The continuity equation states that the mass of fluid that enters a pipe per unit time is equal to the mass of fluid that exits the pipe per unit time.

Here is the expression for the continuity equation: A₁v₁ = A₂v₂ where,

A₁ and v₁ are the cross-sectional area and velocity of fluid before the constriction

A₂ and v₂ are the cross-sectional area and velocity of fluid after the constriction

,Radius of hose, r = d/2 = 1.65 cm

Radius of block end of hose, R = 0.72/2 = 0.36 cm

Area of hose, A₁ = πr²Area of block end of hose,

A₂ = πR²

From the continuity equation, A₁v₁ = A₂v₂

Substitute the values,

A₁ = πr²v₁ = 1.1 m/s

A₂ = πR²v₂ = ?

πr²v₁ = πR²v₂v₂ = πr²v₁/πR²

Now, substituting the values,

v₂ = (π × 1.65² × 1.1)/(π × 0.36²)v₂ = 8.8 m/s

Therefore, the speed of water spray from the hose is 8.8 m/s.

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An eagle flies due east at 40 miles per hour for 1 hour and 30 minutes and 10 miles in the opposite direction at 20 miles per hour, It flies 50 miles far.

Velocity is the percentage of time an object moves along a path, and Velocity is the speed and direction of an object's movement. That is, velocity is a scalar value and velocity is a vector. Most people can expect him to run a mile in 15 to 22 minutes, according to data collected in his 2019 study over 50 years.

Centers for Disease Control and Prevention the average walk speed is 2.5 to 4 mph. Speed ​​is a scalar quantity and there is only one non-negative quantity. It is either positive or zeroes. It will always be positive. The car speedometer shows distance. The speed is positive even when going backward. Velocity is the distance traveled per unit of time. Velocity is the speed at which the position changes.

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The true statements are:Jupiter's Great Red Spot is in the southern hemisphere.The fastest wind speed recorded in our solar system is on Neptune.

Among the given statements, only two are true. Jupiter's Great Red Spot, a massive storm, is indeed located in the southern hemisphere of the planet. The Great Red Spot is a prominent feature on Jupiter, visible as a giant swirling storm system. On the other hand, the fastest wind speed recorded in our solar system, reaching speeds of up to 2,100 kilometers per hour (1,300 miles per hour), is found on Neptune.

The strong winds on Neptune contribute to its dynamic atmosphere and the formation of features like the Great Dark Spot. The remaining statements about Pluto, Saturn's moon Enceladus, and Uranus are not true according to our current understanding.

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Answer:

Postindustrial

Explanation:

The weight falls 4.9 metres in total throughout the first 1.0 seconds.

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Ranking the speeds of mass movements from slowest to fastest: 1. Creep, 2. Slump, 3. Flow, 4. Fall.

When ranking the speeds of mass movements from slowest to fastest, creep is the slowest. Creep refers to the gradual and slow movement of soil or rock particles downhill due to the force of gravity. Slump, the next in line, involves the movement of a coherent mass of soil or rock along a curved surface. Flow, which is faster than both creep and slump, occurs when the material moves as a fluid, typically involving a mixture of soil, water, and air. Fall is the fastest, where the material rapidly descends under the influence of gravity without significant deformation or internal movement.

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Answer:

possible answer from edge

Explanation:

After World War II the only coal available to burn residentially, either for cooking or warmth, was of poor quality and contained large amounts of contaminants that made its fumes toxic. So when millions of homes in London burned this low quality coal and the local atmosphere over and around London stagnated, there was nowhere for the fumes to go. This stagnation allowed the toxic coal fumes to build up until they became physically harmful to humans and animals.

Burning of low quality coal was ultimately responsible for London’s “killer fog” in 1952.

This is a type of sedimentary rock which is combustible and contain high amounts of carbon and hydrocarbon.

The low quality coal contained a lot of contaminants which was released into the atmosphere thereby creating the “killer fog” which adversely affected residents.

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Answer:

sorry but i cannot understand your language, can you speak in english

Answer:

2500kgm/s

Explanation:

Change in momentum is equal to impulse, numerically.

Ft=m( v-u)

But he begins from rest so u= 0

Then

Ft= mv

500(5)=mv

2500= mv

Answer:

a: True centrifuge works on centripetal force.

b: False separating funnel can't be used to separate blood cells from samples.

e: False separating funnel cannot separate milk and water.

f: Condenser receives high pressure gas from the compressor and convert this gas to a liquid.

By increasing the number of turns of wire in the coilAnswer:

Explanation:

(a) The magnitude of the deceleration of each of the cars is a=f/m=μk mg/m=μkg. If a car stop in distance d , then its speed ν just after impact is obtained from Eq. 2−16 :

Since ν0=0 (this could alternatively have been derived using Eq. 8−31 ). Thus,

νA= \(\sqrt2μkgdA\) = \(\sqrt2(0.13)(9.8m/s 2 )(8.2m)\) =4.6m/s .  

(b) Similarly , νB= \(\sqrt2μkgdB\)= \(\sqrt(2(0.13)(9.8m/s2)(8.2m))\) =4.6m/s .

(c) Let the speed of car B be ν  just before the impact. Conservation of linear momentum gives

mB ν=mA νA + mB ​νB, or

ν= \(\frac{(mA νA + mB νB)}{mB}\)= \(\frac{(1100)(4.6)+(1400)(3.9)}{1400}\)=7.5m/s

Linear momentum, also known as momentum, is a vector quantity that describes the motion of an object. It is defined as the product of an object's mass and its velocity. The unit of momentum is kilogram meter per second (kg m/s). Linear momentum is a conserved quantity, meaning that the total momentum of a system of objects remains constant if no external forces act upon it. This principle is known as the law of conservation of momentum and it is a fundamental concept in classical mechanics.

The momentum of an object can be changed by applying a force on it, causing the object to accelerate. The greater the mass of an object and the faster it is moving, the greater its momentum. Understanding linear momentum is important in various fields including physics, engineering, and sports, where it is used to analyze the motion of objects and predict the outcome of collisions.

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Complete Question: -

In the before part of Fig. 9-60, car A (mass 1100kg ) is stopped at a traffic light when it is rear-ended by car B (mass  1400kg ). Both cars then slide with locked wheels until the frictional force from the slick road (with a low μ k of 0.13) stops them, at distances dA = 8.2m  and dB = 6.1m. What are the speeds of (a) car A and (b) car B at the start of the sliding, just after the collision? (c) Assuming that linear momentum is conserved during the collision, find the speed of car B just before the collision.

Answer:

repetitions of a certain exercise

Explanation:

Answer:

5 m

Explanation:

formula,

speed = frequency x wavelength

speed / frequency = wavelength

sub in values

65/ 13 = wavelength

5 m = wavelength

hope this helps please mark

Answer:

Explanation:

The rocky planets include Mercury, Venus, Earth, and Mars. they are made up of rocks and metals and have solid surfaces.They are the closest four planets to the Sun. The gas giants are  Neptune, Uranus, Saturn, and Jupiter. they are further from the sun and are in the outer part of the solar system. I hope this helps!

Answer:

150,000,000 km 2

Explanation:

Answer: D

Explanation:

Frank’s Furniture trains all of its employees to use computers is an example of an improvement in human capital.

Kisses' power is approximately 490.13 Watts.

Power (P) is defined as the rate at which work is done. The formula to calculate power is:

P = W / t

P is the power,

W is the work done,

t is the time taken.

The work done (W) can be calculated as the product of force (F) and distance (d):

W = F * d

In this case, the force is the weight of Kisses, which can be calculated using the formula:

F = m * g

m is the mass of Kisses,

g is the acceleration due to gravity (approximately 9.8 m/s^2).

m = 57 kg

d = 28 m

t = 32 seconds

g = 9.8 m/s^2

First, calculate the work done:

W = F * d

W = (m * g) * d

Next, calculate the power:

P = W / t

Substituting the given values:

W = (57 kg * 9.8 m/s^2) * 28 m

W ≈ 15684.24 J

P = 15684.24 J / 32 s

P ≈ 490.13 W

Therefore, Kisses' power is approximately 490.13 Watts.

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Answer:

The correct option is;

-Pointing the fan exhaust upward

Explanation:

The fan cart transfers reaction force from the jet of air it blows through the exhaust into motion in the opposite direction of the jet. By pointing the fan exhaust upwards, the direction of motion of the cart is therefore, into the ground. Due to the solid nature of the ground the motion is resisted, and by Newton's first law of motion, a body will remain in motion unless resisted by a force. In the case of the question, the ground is resisting the motion of the cart and the cart will remain at rest and having zero acceleration.

The magnitude of the force on the 2 micro coulomb charge is 16.22mN.

Force on 2 micro coulombs by 1 micro coulomb is given as

F₁ = k · 1 × 2 × 10⁻¹²/r²

Or, F₁ = 9 × 10⁹ × 2 × 10⁻¹² /2²

Or, F₁ = 4.5 mN

Force on 2 micro coulombs by 3 micro coulomb is given as

F₂ = k · 3 × 2 × 10⁻¹²/r²

Or, F₂ = 9 × 10⁹ × 6 × 10⁻¹² /2²

Or, F₂ = 13.5 mN

As charges are placed on equilateral triangles, it means both forces will be 60 degrees separated from each other.

So, the resultant magnitude is given by

F = √F₁² + F₂² + 2F₁F₂cos60°

or F = 16.22 mN

Therefore, the magnitude of the force on the 2 micro coulomb charge is 16.22 mN.

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