When using the magnification equation, a value greater than 1 as the solution for m indicates that the image is.

Answer:

Option d (108,000 J) is the correct answer.

Explanation:

The given values are:

Power,

P = 120 Watts

Time,

t = 15 min.

i.e.,

 = 900 sec

As we know,

⇒ \(P=\frac{W}{t}\)

So,

⇒ \(W=P\times t\)

On substituting the given values, we get

⇒      \(=120\times 900\)

⇒      \(=108,000 \ J\)

Answer:

4. A. rope climb

5. True

6. True

Explanation:

hope it's help

Answer:

1000 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 5 × 200

We have the final answer as

1000 g

Hope this helps you!! Good luck <3

Nuclear energy is the energy in the nucleus, or core, of an atom. Nuclear energy can be used to create kinetic energy or electricity, but it must first be released from the atom.

Nuclear energy originates from the splitting of uranium atoms – a process called fission. This generates heat to produce steam, which is used by a turbine generator to generate electricity. Because nuclear power plants do not burn fuel, they do not produce greenhouse gas emissions.

Some primary uses of nuclear energy are- Space Exploration, Nuclear energy provides nearly 20% of electricity in many countries like United States, Medical Diagnosis and Treatment, Criminal Investigation and Agriculture.

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Answer: experts explore the possibility of human colonization on Mars. The episode delves into the challenges of living on the red planet, including radiation exposure, extreme temperatures, and lack of breathable air, and discusses the technology and strategies being developed to overcome these obstacles. The episode also examines the potential benefits of a Mars colony, including the possibility of discovering new scientific breakthroughs and establishing a backup plan for human survival in case of a catastrophic event on Earth.

Answer:

displacement=-21

distance=39

Explanation:

When a car is traveling at speed of 30 km per hour. a bug hits the windscreen and goes splat the bug's force on the windshield is equal to the windshield's force on the bug.

Bug's force on the windshield is equal to the windshield's force on the bug because the system bug-car maintains its overall momentum during the collision, the change in the car's momentum is equal to and opposes the change in the bug's momentum.

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Answer:

The quadratic function models the path of the rocket. When we substitute an x value, we can determine the height in feet of the rocket.

To determine the height it was launched from, we would look at the y-intercept. This represents the starting value, as time = 0 in this point (cannot have negative time).

To determine how far the rocket traveled, we would look at the positive x-intercept of the expression. At this point, height = 0, so we can see the distance from start to finish of the rocket.

To determine the greatest height achieve, we would look at the vertex of the parabola generated from the given function. Using (-b/a, f(-b/a)), we can determine the greatest height achieved.

The ball continues to fall, its kinetic energy will increase.

Kinetic energy is the energy an object possesses due to its motion. It is the energy associated with an object’s speed and mass, and is the energy that an object has because of its movement. Kinetic energy can be converted into other forms of energy, such as heat, light, or sound. It can also be used to do work, such as moving objects or powering machines. Kinetic energy is a form of mechanical energy, which is energy that is associated with the motion or position of an object. Kinetic energy is related to the work done on an object, and it increases as the object’s speed increases. Kinetic energy can be calculated using the formula KE = ½mv2, where m is the mass of the object and v is the velocity of the object.

The kinetic energy of the ball will increase as it falls, because it is gaining speed due to gravity.
As it falls, it accelerates at a rate of 9.8 m/s^2, and its kinetic energy is equal to its mass multiplied by the square of its velocity.
Therefore, as the ball continues to fall, its kinetic energy will increase.

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Plumb line technique, is method would be most helpful in locating the center of gravity of an object.

To calculate the center of gravity of an object, we need to sum the weights multiplied by the distance from the starting point and divide by the total weight of the object.

CG = (aM + bN + cP)/(M + N + P)

Plumb line technique:

When a object is freely suspended, its center of gravity is always directly below the suspension point. A plumb bob is a heavy weight attached to a string that hangs perpendicular to the ground. The line drawn is vertical and passes through the object's center of mass. Repeat this process to pick another attachment point and draw a line along the second vertical line. The centroids of all these objects are at the intersection of the vertical lines. The intersection of two or more vertical lines from a vertical line is the centroid of the object.

If an object is symmetrical and uniformly dense, it is easy to guess its centroid.

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Gravity is a fundamental, universal force that pulls objects toward Earth's center. It increases with mass and decreases with distance. Measured in Newtons, it affects all objects.

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The correct question would be as

Which statement describes gravity? Select three options. There is no defined unit of measurement for gravity.

Gravity is the force that pulls objects toward Earth’s center.

Objects that have a small mass will have no gravitational pull.

Gravitational pull between two objects increases as the mass of one increases.

Gravitational pull decreases when the distance between two objects increases

Nicolaus Copernicus constructed the heliocentric model of the solar system placing the sun at the center.

Heliocentric is the model we use today, where we all revolve around the sun. Geocentric was a model that was long ago discarded after the discovery of telescopes.

The heliocentric model opposes the geocentric model by placing the sun at the center of the solar system as opposed to the earth as it is with the geocentric model.

It is a model in which Nicolaus Copernicus believed that the sun was in the center of the solar system and other celestial bodies were revolving around this.

This was Nicolaus's unorthodox idea that he was having in his mind and constructed the model which was later supported by Galileo and was established  by Galileo that this model was correct.

Therefore, Nicolaus Copernicus constructed the heliocentric model of the solar system placing the sun at the center.

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sunlight contains ultraviolet rays only best describes the forms of electromagnetic waves produced by sunlight. Hence option A is correct.

A fraction of the electromagnetic energy emitted by the sun, including infrared, visible, and ultraviolet light, is known as sunlight. When the Sun is above the horizon, sunlight on Earth is seen as daylight after being dispersed and filtered by the atmosphere. Sunshine, a mix of brilliant light and radiant heat, is what we feel when direct solar radiation is not obstruct by clouds. Sunlight is diffused when it is obstructed by clouds or reflected off of other surfaces. According to sources, the average solar radiation received by each square metre on Earth during a 24-hour period ranges from 164 to 340 watts[1]; according to NASA, this amount represents roughly 25% of the planet's average total solar irradiance.

Sunlight's UV radiation has both favorable and unfavorable impacts on health.

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Answer:

i don't know sorry i would know if i knew the website sorry :( i feel bad not being able to help you

Explanation:

Answer:

We're a different species.

Explanation:

Merry Christmas!

The velocity of the 8 ball after the collision is 8 m/s.

What is Collision?

Collision refers to the event when two or more objects come into contact with each other, resulting in a change in their motion or properties. Collisions can occur in various physical systems, such as in mechanics, physics, and chemistry. In mechanics, collisions are often studied in the context of the conservation of momentum and kinetic energy.

Before the collision:

The mass of the cue ball (m1) is 0.15 kg and its velocity (v1) is 10 m/s.

The mass of the 8 ball (m2) is 0.15 kg and its velocity (v2) is 0 m/s (at rest).

After the collision:

The mass of the cue ball (m1) is still 0.15 kg and its velocity (v1') is 2 m/s.

The mass of the 8 ball (m2) is still 0.15 kg and its velocity (v2') is the unknown we are trying to find.

Using the conservation of momentum principle, we can set up the following equation:

Initial momentum of the system = Final momentum of the system

(m1 * v1) + (m2 * v2) = (m1 * v1') + (m2 * v2')

Plugging in the given values:

(0.15 kg * 10 m/s) + (0.15 kg * 0 m/s) = (0.15 kg * 2 m/s) + (0.15 kg * v2')

Simplifying:

1.5 kgm/s = 0.3 kgm/s + 0.15 kg * v2'

Subtracting 0.3 kg*m/s from both sides:

1.5 kgm/s - 0.3 kgm/s = 0.15 kg * v2'

1.2 kg*m/s = 0.15 kg * v2'

Dividing both sides by 0.15 kg:

v2' = 1.2 kg*m/s / 0.15 kg

v2' = 8 m/s

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According to given information to find the weight of the car, we can use the concept of pressure and area. The car weighs approximately 4.8 x 10³ N.

1. The absolute pressure in each tire is given as 2.0 x 10⁵ Pa.
2. The area of each tire in contact with the ground is given as 0.024 m².

To calculate the weight of the car, we can use the formula:

Pressure = Force / Area

Rearranging the formula, we have:

Force = Pressure x Area

Now, let's plug in the values:

Force = (2.0 x 10⁵ Pa) x (0.024 m²)

Multiply the values:

Force = 4.8 x 10³  N

Therefore, the weight of the car is approximately 4.8 x 10³  N.

Conclusion ,The car weighs approximately 4.8 x 10³  N.

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The universe has four different types of galaxies: elliptical, spiral, barred spiral, and irregular. Although there are other sorts of galaxies besides these, which are the four primary categories, they are all categorized according to their shapes.

A galaxy's shape is a result of a combination of the gravitational pull of the gas clouds' internal gravity and the spinning gas cloud's centrifugal force. Because of the spinning gas cloud's centrifugal force, all galaxies were born with an elliptical form.

Due to the fact that galaxies rotate around a central axis and due to a phenomenon known as "density waves," astronomers think that galaxies have spiral arms. Galactic density waves are comparable to ocean waves. In a pond, the water doesn't actually move; instead, wave energy moves and changes the water as it passes.

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Answer:

A, E, and G is the answer

Explanation:

Hope it helps

Answer:

(a) 217 Ra          (b)     29 P

      84                          16

Explanation

(a) 221 Rn ---------------> 4 He + 217 Ra

      86                           2             84

    the mass number is reduced by 4 while the atomic number is reduced               by 2 since an alpha particle is emitted

(b) 29 P ------------------> 0 e + 29 P

       15                          -1         16

     the mass number remains the same while the atomic number is reduced by -1 since a beta particle is emitted

The shirt looks red because it absorbs the other colors and reflects only the red waves.

Red objects reflect red light and green objects reflect green light. But what about the rest of the colors that hit that object. If you have a red object, all orange, yellow, green, blue, and violet light will be absorbed by that object. A red object is red when hit by white light because it absorbs all components of white light except for the scattered red portion. Colored objects look that way because of the reflected light. When sunlight hits a green leaf, it absorbs violet, red, and orange wavelengths. Reflected wavelengths appear green. In both cases, we see the complementary color of the absorbed color.

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Answer:

you sopose to use rats to testing to get your reaserch

Explanation:

Answer:

C

Explanation:

Action and Reaction forces are equal in the opposite direction.

Answer:

a low protein diet helps you lose weight because lack of protein can make you lose muscle mass

Explanation:

It cuts your strength it makes it harder to keep your balance and slows your metabolism and later you get tired easily it leads to muscle wasting overtime and sheds your fat

Answer:

The Four Elements in Everyday Life.

First Element: Earth. The earth is full of a wide variety of rocks and minerals which provides the soil to grow vegetation and support life. The two ...

Second Element: Water.

Third Element: Air.

Fourth Element: Fire.

Hope this help you!:)

As of my knowledge cutoff in September 2021, there is no current or planned space observatory specifically dedicated to observing electromagnetic radiation in the mid-infrared range, roughly from 5 to 20 micrometers (μm) in wavelength. This range is often referred to as the "thermal infrared" as it corresponds to the thermal radiation emitted by objects at room temperature or higher.

While space observatories like the Spitzer Space Telescope have made significant contributions to mid-infrared astronomy, their missions have either ended or are focused on other wavelength ranges. The James Webb Space Telescope (JWST), set to launch in late 2021, will have some capability in the mid-infrared range but will primarily operate in the near-infrared.

However, it's worth noting that the field of mid-infrared astronomy is not neglected. Ground-based observatories and instruments, such as those equipped with adaptive optics or interferometry, continue to advance our understanding of the mid-infrared universe. Additionally, future mission concepts and technology developments may lead to dedicated space observatories for the mid-infrared range.

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Given:

The mass on the table is,

The hanging mass is,

THe coefficient of friction is,

let the acceleration of the whole system is a (for the hanging mass it is downward and for the mass on the table it is rightward). the tension towards The fixed point of the pulley is T.

we can write,

Adding these equations we get,

Substituting the values we get,

Hence the acceleration is 6.66 m/s^2.

Yes, it is possible for both the pressure and volume of a monatomic ideal gas to change without causing the internal energy of the gas to change. This occurs when the gas undergoes an adiabatic process, meaning there is no heat transfer between the gas and its surroundings.

In an adiabatic process, the change in internal energy (ΔU) is solely dependent on the work done on or by the gas (W). According to the first law of thermodynamics, ΔU = Q + W, where Q is the heat transfer. Since Q = 0 in an adiabatic process, ΔU = W.

For the internal energy of the gas to remain constant (ΔU = 0), the work done on or by the gas must also be zero. This can be achieved through a specific path in the pressure-volume (PV) diagram, where the gas expands and does work on its surroundings, followed by compression, with the surroundings doing an equal amount of work on the gas. The net work done over this process will be zero, ensuring the internal energy remains unchanged.

In summary, it is possible for both the pressure and volume of a monatomic ideal gas to change without affecting its internal energy by undergoing an adiabatic process with zero net work done.

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Answer:

K is the spring/elastic constant measured in Newton per metre square (N/m²)

Explanation:

E = ½Ke²

In the equation above,

E is the energy in Joules (J)

K is the elastic/spring constant in Newton per metre square (N/m²)

e is the extension in metre (m)

Answer:

In the equation Ee = ½ × k × e², "k" = spring constant

Explanation: