When a space shuttle was launched, the astronauts onboard
experienced an acceleration of 29.0 m/s2.

When filled with extra air its mass increased to 0.428kg also the top of polythene container mass connected to the perplex box of volume 1000cm³ and the number of times of air inside was 7.2 times. The density of the air filled in the polythene container is approximately 1.25 kg/m³.

The density of air filled in the polythene container can be determined by considering the change in mass and volume of the container before and after filling it with air. Given that the mass of the empty container is 0.419 kg and the mass of the container when filled with extra air is 0.428 kg, and the volume of the perplex box is 1000 cm³.

Calculate the mass of the air inside the container by subtracting the mass of the empty container from the mass of the container when filled with air:

Mass of air = Mass of filled container - Mass of empty container

= 0.428 kg - 0.419 kg

= 0.009 kg

Calculate the volume of the air inside the container using the given number of times the air inside is 7.2:

Volume of air = Volume of perplex box * Number of times air inside

= 1000 cm³ * 7.2

= 7200 cm³

Convert the volume of air to cubic meters (m³) by dividing by 1000000:

Volume of air = 7200 cm³ / 1000000

= 0.0072 m³

Calculate the density of air using the formula:

Density = Mass / Volume

Density = 0.009 kg / 0.0072 m³

≈ 1.25 kg/m³

Therefore, the density of the air filled in the polythene container is approximately 1.25 kg/m³.

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Mirror isn't a color, it's a reflection of you.

Answer:

It is not a color but a reflection

Explanation:

Newtons 3rd law of motion states there is always equal and opposite reaction.

The answer would be a positive value and the same as the first part.

3.38x10^7

Answer:

917 N

Explanation:

I hope this helps!!

1 reffers to wavelength

2 is amplitude

3 is crest

4 refers to trough

The potential energy of the system have been observed as 0.7 J.

We know that the potential energy is the energy that is possessed by an object that is found at a given height. The implication of this is that the potential energy depends on the height of the object.

If we decrease the height of the object then the potential energy of the body would also change. We have been told that the mass of the balls are 30 g each hence a total mass of 120 g or 0.12 Kg.

The change in the potential energy is;

0.12 * 9.8 * (0.9 - 0.3)

= 0.7 J

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42 times must he repeat this exercise to burn off the energy in one slice of pizza.

What is energy?

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.

Energy burn by the weightlifter = potential energy

Potential energy = mgh

Potential energy = 25.(9.8)(0.50)

Potential energy = 122.5 Joule.

Assume 25% of efficiency so energy burn = 122.5*25/100

energy burn = 30.625 joule

Number of times = 1260/30.625

Number of times = 42 times.

42 times must he repeat this exercise to burn off the energy in one slice of pizza.

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Answer:

Photovoltaic detection is a technique that converts light into electrical energy. It is a process that involves the use of a photovoltaic cell, which is made up of semiconductor materials, to generate an electric current when exposed to light.

The photovoltaic cell absorbs the photons of light, which then knock electrons out of their orbits, creating a flow of electricity. The amount of electricity produced is proportional to the intensity of the light. The photovoltaic cell is commonly used in solar panels to generate electricity from sunlight. The efficiency of the photovoltaic cell is dependent on several factors, including the type of semiconductor material used, the purity of the material, and the thickness of the cell.

The photovoltaic cell has many applications, including in solar power generation, telecommunications, and remote sensing. The technique of photovoltaic detection is an important area of research, as it has the potential to provide a clean and renewable source of energy that can help mitigate climate change.

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The type of energy that creates the electrical energy is Option D) The electrical energy comes from the attraction between charges in the cloud and the ground creating an electric potential.

Lightning is a natural electrical discharge of very high voltage that occurs in the atmosphere. It is a result of the buildup of charges in the atmosphere. The atmosphere contains different types of gases, including water vapor. As warm and cold air masses mix, they create turbulence and water vapor rises, forming clouds. These clouds contain millions of water droplets, ice crystals, and other particles. Within these clouds, there are electrical charges that build up.

The electrical energy in lightning comes from the attraction between the positive and negative charges in the cloud and the ground. When there is a large enough charge separation between the positive and negative charges in the cloud, an electric potential is created. This electric potential can build up to a point where it overcomes the insulating properties of the atmosphere and a lightning bolt is discharged. The lightning bolt is essentially a giant spark of electricity that bridges the gap between the cloud and the ground, creating a flow of electrical energy.

In summary, the electrical energy in lightning is created by the attraction between the positive and negative charges in the cloud and the ground, creating an electric potential that can discharge as a lightning bolt. Therefore, Option D is Correct.

The question was Incomplete, Find the full content below :

Lightning is a very large flow of electrical energy. Describe the type of energy that creates the electrical energy.

A) The electrical energy comes from the thermal energy stored up in the water molecules.

B) The electrical energy comes from the gravitational potential energy of the water molecules.

C) The electrical energy comes from the chemical potential energy of the water molecules in the clouds.

D) The electrical energy comes from the attraction between charges in the cloud and the ground creating an electric potential.

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Answer: c.2

Explanation:

Answer:

The Answer is c. 2

Explanation:

I literally just got done with the quiz

The voltage is higher the faster you pedal. Generating electricity from an adapted bicycle requires a dynamo, which is a device that uses a spinning shaft to produce a rotating magnetic field.

Electricity is a form of energy that is generated by the movement of charged particles, such as electrons. It is a form of energy that is used to power electrical appliances, and is also transmitted through electrical cables, wires and other conduits. Electricity is generated by a variety of sources, including fossil fuels, hydroelectricity, solar power and nuclear energy. It is also used to provide lighting, to heat and cool buildings, to power vehicles and to provide power for communications networks. Electricity is also used to power a wide range of industrial processes, including manufacturing, power generation and transportation. Electricity is a vital part of modern life and is essential for the functioning of modern infrastructure and technology.

The faster the shaft spins, the stronger the magnetic field and the higher the voltage generated. This means that pedaling faster will produce more electrical energy.

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For signs of such collisions on the moons of the outer planets, look for craters, ray systems, fissures and fractures, melted or evaporated material, and changes in the moon's surface composition.

Huge fragments of the newly discovered comet Shoemaker-Levy 9 (SL9) collided with Jupiter over a period of days from July 16 to 22, 1994, leaving vast, dark scars in the planet's atmosphere and lofting superheated plumes into its stratosphere.

Dust was also left floating on top of Jupiter's clouds after the collision. The movement of the planet's dust allowed researchers to trace Jupiter's high-altitude winds for the first time.

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The magnetic pressure modifications capacity power into kinetic power. Dylan places magnetic toy trains subsequent to each other on a track.

When magnets have appealing forces among them and they're moved apart, kinetic power is transferred into the magnets whilst they're released and they pass lower back together. converting the space between magnets changes the amount of strength that can be transferred into and out of a magnetic area.

A charged shifting particle is a particle in movement with either a positive or terrible price. Magnetic pressure has a good-sized impact on charged debris. A robust magnetic pressure can alter the route of a transferring charged particle. A big object with a magnetic force encourages particles to revolve around it.

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The magnetic force changes potential energy into kinetic energy.

Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current. Electricity generators essentially convert kinetic energy into electrical energy.

All magnets have north and south poles. Contrary poles are interested in every different, while the same poles repel every different. While you rub a chunk of iron alongside a magnet, the north-seeking poles of the atoms inside the iron line up inside the same direction. The force generated via the aligned atoms creates a magnetic subject.

When  magnets are brought close collectively they exert a pressure on each different, like poles repel every different.  Unlike poles attract each different. Appeal and repulsion between two magnetic poles are examples of non-touch force.

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Answer:

Drag, Gravity, Inertia, Friction, and Lift.

Explanation:

Drag from the wind, Gravity assuming you are driving on the Earth, Inertia from your body's wish to stand still pushing you back into the seat, Friction from the wheels on the ground and air on the car's body, and Lift from the speed and wind (even if you're not floating, you're still generating lift)

Answer:

75mL

...............

The question is full of inconsistencies and conceptual errors. Students should not waste their time trying to answer it ... it will only mislead and confuse them.

The question is poor. It was written by someone unclear on the concepts. It should be ignored.

Answer:

F₁ = 4 F₀

Explanation:

The force applied on the string by the ball attached to it, while in circular motion will be equal to the centripetal force. Therefore, at time t₀, the force on ball F₀ is given as:

F₀ = mv₀²/r   --------------- equation (1)

where,

F₀ = Force on string at t₀

m = mass of ball

v₀ = speed of ball at t₀

r = radius of circular path

Now, at time t₁:

v₁ = 2v₀

F₁ = mv₁²/r

F₁ = m(2v₀)²/r

F₁ = 4 mv₀²/r

using equation (1):

F₁ = 4 F₀

Answer:

31.4 m/s

Explanation:

The Doppler equation describes how sound frequency depends on relative velocities:

fr = fs (c + vr)/(c + vs),

where fr is the frequency heard by the receiver,

fs is the frequency emitted at the source,

c is the speed of sound,

vr is the velocity of the receiver,

and vs is the velocity of the source.

Note: vr is positive if the receiver is moving towards the source, negative if away.

Conversely, vs is positive if the receiver is moving away from the source, and negative if towards.

Given:

fs = 1000 Hz

fr = 1100 Hz

c = 345 m/s

vr = 0 m/s

Find: vs

1100 = 1000 (345 + 0) / (345 + vs)

vs = -31.4

The speed of the car is 31.4 m/s.

Answer:

Twice as much

Explanation:

D 5-7 Be the only person I know of is the Book with all men and men and people experience the first of the wisdom and

The acceleration produced will be one-half as much.

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. SI unit of acceleration is meter/second² (m/s²).

From Newton's 2nd law of motion; it can be written that:

Force = mass × acceleration

acceleration = force/mass.

Now, according to the question, an unbalanced force of 2 newtons applied to a given mass produces an acceleration.

So, when  an unbalanced force of 1 newton is applied to the same mass, the force applied on the object becomes half.

Hence, from the equation, the acceleration produced will be one-half as much.

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Explanation:

The most established layers are on the base, and the most youthful layers are on the top. Since dregs here and there incorporate once-living creatures, sedimentary stone regularly contains a great deal of fossils. Fossils are once living beings that have been transformed into rock, fit as a fiddle or type of the creature can in any case be seen.

The potential energy gained is 4550 J.

The potential energy that a huge item has in relation to another massive object due to gravity is known as gravitational energy or gravitational potential energy. When two objects descend toward one another, potential energy associated with the gravitational field is released.

The potential difference is given as:

U = mgh

Where U is the gravitational energy, m is the mass, g is the acceleration due to gravity, and h is the height.

Now, we have

Leopard's mass, m = 65kg

The height of the tree, h = 7 m

Acceleration due to gravity, g = 10N/kg

Therefore,

U = mgh

U = 65 × 7 × 10

U = 65 × 70

U = 4550 J

Thus, the leopard will need 4550 J of gravitational potential energy to climb 7 meters.

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Hãy giải thích các khái niệm sau và lấy ví dụ cụ thể để minh họa:

Answer:

a. 4N and 7N

Explanation:

Draw a free body diagram.

Sum of the forces in the x direction:

∑F = ma

T₂ cos 30° − T₁ cos 60° = 0

T₂ cos 30° = T₁ cos 60°

T₂ (½√3) = T₁ (½)

T₁ = T₂ √3

Sum of the forces in the y direction:

∑F = ma

T₂ sin 30° + T₁ sin 60° − mg = 0

T₂ sin 30° + (T₂ √3) sin 60° − mg = 0

½ T₂ + 1.5 T₂ − mg = 0

2 T₂ = mg

T₂ = 4 N

T₁ = 4√3 N

T₁ ≈ 7 N

Answer:

Turned up side down

Explanation:

The portion that shows a decreasing velocity is  D to E.

The position time graph is used to describe the motion of a body. We know that the slope of a velocity time graph is the velocity of the graph.

If we look at the graph as shown in the image attached to the answer, we can see that the portion that shows a decreasing velocity is  D to E.

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Answer:

D - E

Explanation:

hope this help

a. The free-body diagrams of the 8.0 kg box and the 2.0 kg mass is attached below.

bi) the acceleration of the system is 0.4 m/s^2

bii)  the tension in the string is 0.8 N.

Net force = ma

Net force = T - F_friction

where T is the tension force and F_friction is the frictional force.

Substituting the given values, we have:

T - F_friction = ma

T - 6.0 N = (8.0 kg + 2.0 kg) a (since the tension force acts on both masses)

T - 6.0 N = 10.0 kg a

(ii) To find the tension in the string, we can apply Newton's second law of motion to the 2.0 kg mass:

Net force = ma

where m is the mass of the mass and a is the acceleration of the system. The net force on the mass is the tension force:

Net force = T

Substituting the given values, we get:

T = ma

T = 2.0 kg x a

To solve for T, we need to find the acceleration of the system.

To find both a and T, we can use the equations we derived above and solve them simultaneously:

T - 6.0 N = 10.0 kg a (equation 1)

T = 2.0 kg x a (equation 2)

Substituting equation 2 into equation 1, we get:

2.0 kg x a - 6.0 N = 10.0 kg a

Solving for a, we get:

a = 0.4 m/s^2

Substituting a into equation 2, we get:

T = 2.0 kg x 0.4 m/s^2 = 0.8 N

Therefore, the acceleration of the system is 0.4 m/s^2 and the tension in the string is 0.8 N. of the system is 0.4 m/s^2 and the tension in the string is 0.8 N.

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Answer:

hand saws

power saws

Circular Saw

Explanation:

that is all that i know

When a parachutist opens her parachute after accomplishing terminal speed, in what path does she accelerate.

When a parachutist opens her chute, she slows down. That method she hurries up upward.Once the parachute is opened, the air resistance overwhelms the downward pressure of gravity. The internet pressure and the acceleration at the falling skydiver is upward.

A 500-N parachutist opens his chute and reports an air resistance pressure of 800 N. The internet pressure at the parachutist is. three hundred N upward (Air resistance exerts a pressure withinside the path contrary the path of the movement of the person. So, the internet pressure is 500 N down plus 800 N up, that is three hundred N up

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