a candle that is 10.0 cm high is placed 30.0 cm in front of a diverging lense the lens has a focal length of -20.0 cm what is the magnification of the image

backward movement

because momentum = mass × speed

And mass must be in positive value..

so negative value is speed

which moving backward..

Answer:

d = 11.77 m

Explanation:

Given that,

A ball is droped off the side of a bridge after 1.55 seconds.

We need to find how far it has fallen.

It will fall under the action of gravity. It would mean that a = g = 9.8 m/s²

Let it is fallen at a distance d. d can be calculated using second equation of motion as follows :

\(d=ut+\dfrac{1}{2}at^2\)

Put u = 0 and a = g

So,

\(d=\dfrac{1}{2}\times 9.8\times (1.55)^2\\\\d=11.77\ m\)

Hence, it will fall at a distance of 11.77 m.

Answer:

-11.77!!!! DONNT FORGET NEGATIVE

Explanation:

Answer:

see explanation

Explanation:

This sculpture is entitled, Buddha and Attendents. It was made of sandstone flecked with cream-colored spots. Buddha's right hand is raised in a gesture meaning "have no fear". This sculpture is from the Mathura school of thought.

sample response 3dge22

Answer:

This sculpture is entitled, Buddha and Attendents. It was made of sandstone flecked with cream-colored spots. Buddha’s right hand is raised in a gesture meaning ”have no fear”. This sculpture is from the Mathura school of thought.

Explanation:

picture

Because, body at higher temperature has higher average KE of molecules and body at lower temperature has lower average KE of molecules. When two bodies having higher temperature and lower temperature are keep in contact, the body at higher temperature shares their energy to molecules at lower temperature.

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If you thrust a magnet into a closed loop of wire, the loop will have current in it. So the correct option is B.

A magnet is a body with a magnetism that can attract different irons that can be given naturally or artificially. Magnets can have their magnetic field continuously and this field can attract materials or repel them, this will depend on the magnetic permeability of the compound. The magnetic field of the images will be oriented towards the south pole and the north pole and each of these will be attracted by their opposites.

Not all magnets have permanent magnetism, this depends on whether they are going to be magnetized to be permanent or if they will only have temporary functionality.

By pushing a magnet in a closed circuit of wire, a magnetic field will be generated in which a current will flow in the turns of wire.

Therefore, we can confirm that the correct option is B. have current in it.

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Answer:

A Matter is not created or destroyed and the same amount of mass remains

Explanation:

In a chemical reaction, according to the law of conservation of matter, "matter is neither created nor destroyed and the same amount of mass remains in such a process".

Answer:

It is a product, so it is released by the plant.

Explanation:

\(6CO2 + 6H2O\) → \(C6H12O6 + 6O2\)

The plant uses water and carbon dioxide to create glucose and oxygen. Glucose is plant food, and Oxygen is given off as a byproduct.

Answer:

It is a product, so it is released by the plant.

Explanation:

Answer:

it would be electromagnetic waves

Answer:

A. Water pollution contributes to water scarcity.

Explanation:

Water pollution occurs when materials are disposed in water body, thus making it unfit for use. A polluted water can not be used for various purposes that water can be used for. Examples include: recreation, drinking, washing etc.

Water scarcity is the situation when available water is not sufficient for the use of organisms in a community. This majorly occurs in arid area.

Thus, since a polluted water renders water to be useless, therefore water pollution contributes  to water scarcity.

Answer:

Water contributes to water scarcity

Explanation:

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The change in the momentum of the bus is 10600 kg-m/s, if bus of 1600 kg crashes with a SUV of 600 kg.

The mass of the bus, m₁ = 1600 kg

The mass of the SUV, m₂ = 600 kg

Initial velocity of the bus, v₁ = 10 m/s

initial velocity of the SUV, v₂ = 0 (at rest)

Velocity of the bus after collision, v₃ = 3 m/s

Velocity of the SUV after collision, v₄ = 1 m/s

The change in momentum(Δp) is given by,

Δp = (m₁v₁ + m₂v₂) - (m₁v₃ + m₂v₄)

Δp = (1600 × 10 + 600 × 0) - (1600 × 3 + 600 × 1)

Δp = 16000 - 5400

Δp = 10600 kg-m/s

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Answer:

d

Explanation:

the answer of the above mentioned question is 2N to the left.

hope this helps!

Answer:

The smaller net force :)

Explanation:

The second law shows that if you exert the same force on two objects of different mass, you will get different accelerations (changes in motion). The effect (acceleration) on the smaller mass will be greater (more noticeable).

If two different net forces are applied to the same object at different times, a smaller net force will cause the object to accelerate at a greater rate.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body. Force is defined as the product of mass and acceleration. Its unit is Newton.

Newton's second rule states that if you apply the same force to two objects with different masses, the accelerations will be different. The impact will be larger on the smaller mass.

If two different net forces are applied to the same object at different times, a smaller net force will cause the object to accelerate at a greater rate.

Hence smaller rate is the correct answer.

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The compression of 10 cm by a 100 N force on the plane that has a

coefficient of friction of 0.39 give the following values.

Mass of the block, m = 3 kg

\(Spring \ constant, K = \dfrac{100 \, N}{0.1 \, m} = \mathbf{ 1000\, N/m}\)

Coefficient of kinetic friction, \(\mu_k\) = 0.39

Therefore, we have;

Friction force = \(\mathbf{\mu_k}\)·m·g·cos(θ)

Which gives;

Friction force = 0.39 × 3 × 9.81 × cos(48°) ≈ 7.68

Work done by the motion of the block, W ≈ 7.68 × d

The work done = The kinetic energy of the block, which gives;

\(\mathbf{\dfrac{1}{2} \times k \cdot x^2 }= 7.68 \cdot d\)

The initial kinetic energy in the spring is found as follows;

K.E. = 0.5 × 1000 N/m × (0.1 m)² = 5 J

The initial velocity of the block is therefore;

5 = 0.5·m·v²

v₁ = √(2 × 5 ÷ 3) ≈ 1.83

Work done by the motion of the block, W ≈ 7.68 N × 0.07 m ≈ 0.5376 J

Chane in kinetic energy, ΔK.E. = Work done

ΔK.E. = 0.5 × 3 × (v₁² - v₂²)

Which gives;

ΔK.E. = 0.5 × 3 × (1.83² - v₂²) = 0.5376

Which gives;

The height at which the block will stop moving, h, is given as follows;

\(At \ the \ maximum \ height, \ h, \ we \ have ; \ \dfrac{1}{2} \times 1000 \times 0.1^2 = 7.68 \times x\)

Which gives;

\(Length \ of \ the \ incline \ at \ maximum \ height, \ x_{max} =\dfrac{ 7.68 }{ \dfrac{1}{2} \times 1000 \times 0.1^2 } \approx 1.536\)

The distance up the inclined, the block rises, at maximum height is therefore;

\(x_{max}\) ≈ 1.536 m

Therefore;

h = 1.536 × sin(48°) ≈ 1.1415

From the above solution for the height, the length of the incline is he

distance along the incline at maximum height which is therefore;

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Considering the definition of kinetic energy, the bullet has a kinetic energy of 156.25 J.

Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.

Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and in a rest position, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its rest state by applying a force to it.

The kinetic energy is represented by the following expression:

Ec= ½ mv²

Where:

In this case, you know:

Replacing in the definition of kinetic energy:

Ec= ½ ×0.500 kg× (25 m/s)²

Solving:

Ec= 156.25 J

Finally, the bullet has a kinetic energy of 156.25 J.

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Answer:

convex lens and a concave mirror

Answer:

c on edge

Explanation:

Atoms have no electric charge because they have an equal number of electrons and protons.

Explanation:

So from this, we can conclude that atoms have no electric charge because they have an equal number of electrons and protons. Option C is correct.

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Electrical energy can be described as the energy transferred through the movement of charges, typically in the form of an electric current

define  Electrical energy  ?

Electrical energy is a form of energy that results from the movement of electric charges, typically in the form of an electric current. It is the energy that is transferred or converted from electric potential energy, which is the energy stored in a system due to the separation of charges. Electrical energy can be harnessed and used for various purposes, such as lighting, heating, powering electronic devices, and driving motors. It is an essential form of energy in modern society and plays a crucial role in many aspects of daily life.

The correct answer is 1. Electrical energy can be described as the energy transferred through the movement of charges, typically in the form of an electric current. Options 2, 3, and 4 refer to other forms of energy related to electricity but do not fully describe electrical energy itself.

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Currently, there are several plans for both near and far future travel to Mars.

In the near future, NASA's Artemis program aims to land humans on the moon again by 2024, and this program will serve as a stepping stone to eventually send humans to Mars. NASA's plans for Mars include sending robotic missions to the planet to study its geology, search for signs of past life, and prepare for future human exploration. NASA's Mars Sample Return mission, planned for the mid-2020s, aims to bring samples of Martian rock and soil back to Earth for study.

Other organizations, such as SpaceX and Blue Origin, have their own plans for sending humans to Mars. SpaceX CEO Elon Musk has stated that he hopes to send humans to Mars as early as 2026 using his Starship spacecraft, which is currently in development.

In the far future, there are plans for permanent human settlements on Mars. The Mars One project, which has faced funding and technical challenges, had aimed to establish a permanent human settlement on Mars by 2032. The Mars Society, a non-profit organization dedicated to the exploration and settlement of Mars, has also proposed plans for a permanent human settlement on Mars.

Overall, while there are many plans and aspirations for human travel to Mars, it remains a challenging and risky endeavor, and much research and development is still needed before humans can safely and sustainably travel to and live on the Red Planet.

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Answer: If the earth is a ginormous capacitor, an electron floating at 10,000 ft would move towards the earth's surface because the surface of the earth would have a lower potential energy than the electron's current position. In a capacitor, the electric field causes a separation of charge between the plates, with one plate becoming positively charged and the other negatively charged. In the case of the earth, the surface of the earth can be considered as one plate, and the upper atmosphere as the other.

Since electrons have a negative charge, they would be attracted to the positively charged earth's surface, which would have a lower potential energy compared to their current position at 10,000 ft. Therefore, the electron would move towards the earth's surface until it reaches a point where the potential energy is equal to the energy it had at 10,000 ft.

It's important to note that while the earth can be considered as a capacitor, the electric field produced by it is very weak and not significant enough to affect the motion of an electron in the way described above. This hypothetical scenario is useful for understanding the behavior of charges in a capacitor, but it does not accurately reflect the behavior of electrons in the earth's atmosphere.

Explanation: :)

(a) To determine the total pressure in the flask, we need to consider the partial pressures of each gas present and add them together.

Using the ideal gas law, we can calculate the partial pressure of each gas:

PV = nRT

For Ne gas:

P₁V₁ = n₁RT

P₁ = (n₁/V₁)RT

For SF6 gas:

P₂V₂ = n₂RT

P₂ = (n₂/V₂)RT

To find the total pressure, we add the partial pressures:

P_total = P₁ + P₂

(b) The mole fraction (χ) of each gas can be calculated using the formula:

χ = moles of gas / total moles of gas

To find the moles of each gas, we use the ideal gas law rearranged:

n = PV / RT

Now, let's calculate the values.

Given:

Volume of Ne gas (V₁) = 435 mL = 0.435 L

Temperature of Ne gas (T₁) = 21 °C = 294 K

Pressure of Ne gas (P₁) = 1.09 atm

Volume of SF6 gas (V₂) = 456 mL = 0.456 L

Temperature of SF6 gas (T₂) = 25 °C = 298 K

Pressure of SF6 gas (P₂) = 0.89 atm

Volume of flask (V_total) = 325 mL = 0.325 L

Temperature of flask (T_total) = 30.2 °C = 303.2 K

Gas constant (R) = 0.0821 L·atm/(K·mol)

(a) To calculate the total pressure:

P₁ = (n₁/V₁)RT₁

P₁ = (PV₁/RT₁)

P₂ = (n₂/V₂)RT₂

P₂ = (PV₂/RT₂)

P_total = P₁ + P₂

(b) To calculate the mole fraction:

n₁ = P₁V_total / RT_total

n₂ = P₂V_total / RT_total

χ₁ = n₁ / (n₁ + n₂)

χ₂ = n₂ / (n₁ + n₂)

By plugging in the given values and performing the calculations, we can find the total pressure in the flask and the mole fraction of each gas.

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Answer:

Some common use of air pressure in daily life is inflating tires, playing musical wind instruments, drinking through straw, flushing toilet, drawing water from well, operating barometer, blowing up balloon, breathing, maintaining body shape especially abdomen.

Explanation: )

Answer:

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Speed of spaceship = 240,000 km/s.

This is a problem involving the relativistic length contraction, where the length of an object moving at a relativistic speed appears shorter to an observer who is at rest relative to the object.

The equation for the length contraction is given by:

L = L0 / γ

where L0 is the proper length of the object (i.e., the length measured in the object's rest frame), L is the length measured by an observer in a different frame, and γ is the Lorentz factor, which depends on the relative velocity between the two frames.

In this problem, the proper length of the spaceship is L0 = 200 mm and the length measured by the observer on the space station is L = 120 mm. Therefore, we have:

L = L0 / γ

γ = L0 / L

Substituting the given values, we get:

γ = 200 mm / 120 mm = 5/3

The Lorentz factor γ is related to the relative velocity v between the spaceship and the space station by:

γ = 1 / sqrt(1 - (v/c)^2)

where c is the speed of light.

Solving for v/c, we get:

v/c = sqrt(1 - 1/γ^2) = sqrt(1 - 9/25) = 4/5

Therefore, the speed of the spaceship relative to the space station is:

v = c x (4/5) = 0.8c

where c is the speed of light and the unit of the speed is m/s.

So, the speed of the spaceship relative to the space station is 0.8 times the speed of light, or approximately 240,000 km/s.

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Answer:

x = - 8 atau 3

Explanation:

3ˣ² × 3⁵ˣ = 3²⁴

Penarikan:

Mᵃ × Mᵇ = Mᵃ⁺ᵇ

3ˣ² × 3⁵ˣ = 3ˣ²⁺⁵ˣ

Karena itu

3ˣ² × 3⁵ˣ = 3²⁴

3ˣ²⁺⁵ˣ = 3²⁴

x² + 5x = 24

Mengatur kembali

x² + 5x - 24 = 0

Pemecahan dengan faktorisasi

x² - 3x + 8x - 24 = 0

x (x - 3) + 8 (x - 3) = 0

(x + 8) (x - 3) = 0

x + 8 = 0 atau x - 3 = 0

x = - 8 atau x = 3

Karena itu,

x = - 8 atau 3

Answer:

It is not a uniform velocity, because his velocity increases for 5 m every second (acceleration = 5m/s2), meaning his velocity always changes.

When he starts at rest, his velocity is 0 m/s. But in 1 second later, his velocity is already 5m/s. At 2 seconds, his velocity will be 10 m/s.

Answer:

d

Explanation:

removing heat from water

Answer:

garbage , polluted water dam, unexpected dust particle

Answer:Hetero

Explanation: Honestly, same as the last guy said

In this case, a body of mass 5 kg kept at a height of 10 m. So, the potential energy is given as 500 J.

An object's potential energy is its stored energy. This energy has the capacity to be productive. An object's potential energy is provided by gravity. Gravity's downward force is the source of this potential energy.

The acceleration brought on by gravity is known as the gravitational constant, or g. On Earth, this acceleration is equivalent to 10 metres per second. PE = mgh is the equation for potential energy resulting from gravity. The object's potential energy declines and its kinetic energy rises as it approaches the ground.

Potential Energy = 5 x 10 x 10 = 500J.

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