what is the weight of a 500 kg boulder on the moon?

If the Moon was twice as far from the Earth as it is now, its gravitational pull on the Earth would reduced to a quarter of what it is now.

Gravitational force is proportional to the mass of the two objects and inversely proportional to the square of the distance between them.

This is expressed mathematically by the equation F = G (m1m2/r²), where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between them.

The formula shows that the gravitational attraction between two objects varies with the distance between them.

Thus, if the distance between the Moon and Earth doubles, the force of gravity between them will decrease to a quarter of what it was before.

This implies that the Moon's gravitational attraction to the Earth would reduce, which means that the tides would be much less significant than they are now.

Tidal waves would be less severe, and tidal currents would be less vigorous.

The reduced gravitational pull on Earth could also cause the planet's rotation to speed up since the Moon slows it down through tidal friction.

Therefore, if the Moon were twice as distant from the Earth as it presently is, its gravitational attraction to Earth would be reduced to a quarter of what it is now.

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The carbon isotope was cobined with the proton to produce the nitrogen isotope hence it is a fusion reaction.

The term nuclear fusion refers to a kind of reaction in which two nuclei fuse together to give rise to a single nuclei with the evolution of energy.

We can see that the carbon isotope was cobined with the proton to produce the nitrogen isotope hence it is a fusion reaction.

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Answer:

A. Nuclear fusion

Explanation:

got it right, trust

Answer:  46.0455 cm

Explanation:

The kinetic energy of the puck is 2.75625 Joules.

This energy is used to compress the spring and bring the puck to rest. The work done on the puck by the spring is equal to the change in kinetic energy of the puck, which is the kinetic energy it initially had.

The work done on the puck by the spring can also be expressed as the potential energy stored in the spring at the point of maximum compression, which is given by the formula \(\( \frac{1}{2} k x^2 \)\), where \(\( k \)\) is the spring constant and \(\( x \)\) is the distance the spring is compressed.

Setting these two expressions for the work done equal to each other gives:

\(\( \frac{1}{2} k x^2 = 2.75625 J \)\)

We can solve this equation for \( x \), the distance the spring is compressed.

The spring will compress approximately 0.460455 meters, or 46.0455 cm, before the puck is brought to rest.

Answer:

16 / 4 = ratio of diameters

A = pi r^2

A16 / A4 = pi * 8^2 / (pi 2^2) = 16

The light gathering power would increase by a factor of 16

The light-gathering power of the telescope increase by 16 times with that upgrade

The Light gathering power  of an optical telescope is the ability of a telescope to collect a lot more light than human eye .

Light gathering power can be calculated by the ratio of their diameter squared

light gathering power with initial aperture = L1

light gathering power with final aperture = L2

L2 / L1 = \(16^{2}\) / \(4^{2}\)

L2/L1 = 16

L2 = 16 L1

The light-gathering power of the telescope increase by 16 times with that upgrade

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The linear velocity of the wheel is 16 m/s.

Linear velocity is the rate of change of displacement with regard to time when the object is moving in a straight line

To calculate the linear velocity of the wheel, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The linear velocity of the wheel is 16 m/s.

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Answer:

electrons

Explanation:

i think this is right

Answer:

P.E = 2934.75

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

\( P.E = mgh\)

But we know that weight = mg = 645N

Substituting into the equation, we have;

\( P.E = 645 * 4.55 \)

\( P.E = 2934.75 J\)

Potential energy, P.E = 2934.75 Joules.

Answer:

At the point when an item is moved into the air toward a path other than straight up or down, the speed, quickening, and uprooting of the article don't all point a similar way. In circumstances like this, when taking care of the difficult we ought to apply the procedure of settling vectors into segments. At that point we apply the more straightforward one-dimensional types of the conditions for every segment. At long last, we can recombine the parts to decide the resultant.  

Explanation:

At the point when an item is moved into the air toward a path other than straight up or down, the speed, quickening, and uprooting of the article don't all point a similar way. In circumstances like this, when taking care of the difficult we ought to apply the procedure of settling vectors into segments. At that point we apply the more straightforward one-dimensional types of the conditions for every segment. At long last, we can recombine the parts to decide the resultant.  

Objects that are tossed or dispatched into the air and are dependent upon gravity are called projectiles. The way of a shot is a bend called parabola. In the event that an article has an underlying speed in some random time span, there will be level movement all through the trip of the shot.  

Shot movement is free fall with an underlying speed. The underlying flat speed of a shot is equivalent to the level speed all through the shot's flight.  

To discover the speed go a shot anytime during its flight, discover the vector aggregate of the parts of the speed now. We should utilize the Pythagorean hypothesis to discover the extent of the speed and the digression capacity to discover the course of the speed. On the off chance that an article has an underlying vertical part of speed and a level segment of speed, the item's movement ought to be settled into its segments, and afterward the sine and cosine capacities can be utilized to locate the vertical and even segments of the underlying speed. The speed of a shot dispatched at a point to the ground has both flat and vertical parts. The vertical movement is like that of an item that is hurled straight with an underlying speed.

The coordinate axes are X and Y. The X-axis is the horizontal line that goes from left to right, while the Y-axis is the vertical line that goes from bottom to top.

The point where they intersect is known as the origin. Each point on the grid is identified by its coordinates, which are written in the order (x, y), with the x-coordinate representing the horizontal position and the y-coordinate representing the vertical position. The x-coordinate increases from left to right, and the y-coordinate increases from bottom to top. Therefore, the point in the bottom left corner would be (0, 0), and the point in the top right corner would be (10, 10).The grid is made up of 100 square cells that are all the same size. Each cell is assigned a unique pair of coordinates, and all points on the grid can be identified using these coordinates.

The grid is commonly used to represent data in various fields, including mathematics, science, and computer science.

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Answer:

6m/s^2

Explanation: this is because when the object is mass is increasing the object's acceleration will divide into two.

Answer:

0.9m/s^2 (yours is 0.87, so choose that)

Explanation:

formula for centripetal acceleration:

v^2/r

to find v, we know that f=1/90s, and r=180m.

v=(2pir)/T

v=(2pi(180))/90

v=12.6m/s

now plug into a=v^2/r

a=(12.6)^2/180

a=0.9m/s^2

Answer:

8. sketches and models helped the astronauts in their training program as they prepare for their missions

9. before building the Mars lander , students need to sketch their design

Answer: A) Had twice as much mass

Explanation:

Given that the force of gravity pulling down on school = 400,000 N

The force of force of gravity is the product of mass of the body and the acceleration due to gravity. The acceleration due to gravity is constant on the earth surface with a constant value of 9.8m/s²

Hence,

F = mg = 800N

F = force of gravity, m = mass of body, g =! acceleration due to gravity.

since g is constant, to have 2F, then mass has to be doubled, that is 2m(2 * mass)

Answer:

In nuclear power plants, energetic neutrons are directed into a sample of the isotope uranium-235. ... A common fission reaction produces barium-141 and krypton-92. In this particular reaction, one uranium nucleus breaks into a barium nucleus, a krypton nucleus, and two neutrons

The most accurate statement in this scenario would be Nothing you do will have any effect; without any friction, you will continue to move in a straight line at a constant speed, as there is no net external force on you.

Hence, the correct option is C.

When there is no friction between the tires and the icy road, the tires cannot generate the necessary force to accelerate, decelerate, or change direction effectively.

The absence of friction means that there is no grip between the tires and the road surface, resulting in a lack of control over the car's movement. As a result, the car will continue to move in a straight line at a constant speed, and any attempts to brake, accelerate, or steer will have minimal to no effect.

Additionally, the lack of friction can make it difficult to stop or regain control, increasing the likelihood of the car sliding or spinning.

Therefore, The most accurate statement in this scenario would be Nothing you do will have any effect; without any friction, you will continue to move in a straight line at a constant speed, as there is no net external force on you.

Hence, the correct option is C.

The given question is incomplete and the complete question is '' You are driving your car along the road and hit a patch that is so icy that there is effectively no friction betweenyour tires and the road. Which statement is most accurate?

A) If you hit the brakes, you will eventually stop.

B) If you twist the steering wheel, you can turn into the skid.

C) Nothing you do will have any effect; without any friction, you will continue to move in a straight line at a constant speed, as there is no net external force on you.

D) If you hit the accelerator, you will get out of the icy patch faster.E) Your car will start to spin.''

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When a pulse encounters a fixed point, such as a wall or a rigid boundary, it undergoes reflection. Reflection occurs when the pulse bounces back upon reaching the fixed point.

During reflection, the pulse experiences a change in direction but retains its original shape and properties. The incident pulse approaches the fixed point and interacts with it. As a result, an equal and opposite pulse is generated and travels back in the opposite direction.

The behavior of the reflected pulse depends on the nature of the incident pulse and the properties of the medium it travels through. If the pulse is inverted (upside-down) before reflection, the reflected pulse will also be inverted. Similarly, if the incident pulse is right-side-up, the reflected pulse will maintain the same orientation.

The reflection process follows the law of reflection, which states that the angle of incidence (the angle between the incident pulse and the normal to the fixed point) is equal to the angle of reflection (the angle between the reflected pulse and the normal). This law ensures that energy and momentum are conserved during the reflection process.

In conclusion, when a pulse encounters a fixed point, it undergoes reflection, resulting in the generation of an equal and opposite pulse traveling in the opposite direction. The reflected pulse retains the same shape and properties as the incident pulse, following the law of reflection.

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Answer:

c electric field is the answer

When fundamental frequency, length and tension is given then the wire's mass per unit length is 9.23 * 10 ^-3 g/m.

The fundamental frequency is defined as the lowest frequency of a periodic waveform. Fundamental frequency is defined as the average number of oscillations per second and is expressed in Hertz.

Given ; length , l= 0.54m Tension, T = 1373N

Frequency , f = 357 Hz

f= (1/2l)*(√T/m)

m = T/(4l² f²)

= 1373/(2*0.54² * 357²)

m= 9.23 * 10 ^-3 g/m

The wire's mass per unit length in grams/meter is 9.23 * 10 ^-3 g/m.

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Answer: If there is a higher friction, the opposition force is higher so that it can reduce our speed. So, a factor that affects friction is the roughness or smoothness of the surface of the object. In comparison of the table with the fabric, the fabric will have a more opposition force. As the surface of the fabric is usually rougher than the surface of a smooth table. As there is more friction on a fabric, we will feel more opposition force on our finger tip.

Hope it helped! :>

Answer:

D

Explanation:

The bottom of the mountain is not correct because your trying to stop.

The top is of the mountain is when you gain energy.

The middle is when you have the most kinectic energy.

Due to the greater disorder of molecules and the increase in heat energy associated with the liquid state, 1 kg of liquid iron would have greater entropy compared to 1 kg of solid iron.

The kilogram of liquid iron would have greater entropy compared to the kilogram of solid iron. Entropy is a measure of the disorder or randomness in a system.

In the case of iron, when it transitions from a solid to a liquid state, the arrangement of its molecules becomes more disordered.

In the solid state, the iron atoms are arranged in a regular lattice structure, which is more ordered compared to the random arrangement of molecules in the liquid state. The increased disorder in the liquid state contributes to higher entropy.

Additionally, as you mentioned, in order to transform solid iron into liquid iron, heat is added. This increase in heat energy also contributes to higher entropy since it leads to greater molecular motion and randomness within the system.

Therefore, due to the greater disorder of molecules and the increase in heat energy associated with the liquid state, 1 kg of liquid iron would have greater entropy compared to 1 kg of solid iron.

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Answer:

The amount of potential energy stored in the magnetic field depends on both the strength of the magnet and the distance that another magnet or magnetic object is from it. ...

Explanation:

All objects have a gravitational force, no matter how small, but only some objects such as iron objects can have a magnetic force.

Answer:

• The potential energy is stored as magnetic potential energy as a result of magnetic force exerted at the domains of each magnet.

• This magnetic potential energy is therefore converted to kinetic energy causing these magnets to repel.

\(.\)

The first blank is robust watermark; a robust watermark will not resist tampering.

The second blank is fragile watermark; a fragile watermark will resist manipulations of the media.

A watermark is a faint design made in paper during manufacture that is visible when held against the light and clearly identifies the maker.

The watermark can be of different types depending on the application and they include:

Thus, The first blank is robust watermark; a robust watermark will not resist tampering.

The second blank is fragile watermark; a fragile watermark will resist manipulations of the media.

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Explanation:

Air parcels can change as they move through the atmosphere due to a variety of factors, including changes in temperature, pressure, and moisture content. These changes can cause the air parcel to expand or contract, which in turn affects its density and buoyancy.

For example, if an air parcel rises and encounters lower pressure, it will expand due to the reduced external pressure and cool adiabatically, meaning without exchanging heat with its surroundings. Alternatively, if an air parcel descends and encounters higher pressure, it will be compressed and warm adiabatically. As the parcel rises or descends, it can also encounter regions with different moisture content, which can cause it to gain or lose water vapor through processes such as condensation or evaporation.

The changes to the air parcel will continue until it reaches a state of equilibrium with its surrounding environment. For example, if the temperature and moisture content of the air parcel become equal to those of the surrounding air, it will stop changing and become part of the larger air mass. However, if the air parcel continues to experience differences in temperature, pressure, or moisture content, it may continue to change as it moves through the atmosphere.

Answer:

air parcel change because of the air pressure surrounding the parcel.

Compact fluorescent light usually has a B. Longer life compared to an incandescent bulb producing the same number of lumens.

CFLs are designed to be more energy-efficient than incandescent bulbs. They use less energy to produce the same amount of light, which makes them more efficient. This efficiency leads to a longer lifespan for the CFL compared to incandescent bulbs. In general, a CFL can last up to 10 times longer than an incandescent bulb.

To summarize:
- A compact fluorescent light (CFL) has a longer life compared to an incandescent bulb producing the same number of lumens.
- This is due to the higher energy efficiency of CFLs, which allows them to use less energy and have a longer lifespan.

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According to Ohm's law: V = IR

The rate of flow of charges will depend on the voltage supplied and the resistance in the wire.

ELECTRIC CHARGE

Current can be defined as the rate of flow of charges. Where charge is the product of current and time. This means that electric charge is proportional to electric current. The current in a conducting wire depends on;

The two factors that can affect the flow of electric charge in the given options are voltage and resistance

Because according to Ohm's law: V = IR

The rate of flow of charges will depend on the voltage supplied and the resistance in the wire.

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Answer:

A. and D.

Explanation: Identifying Factors That Affect Current

Which factors affect the flow of electric charge? Select two options.

[voltage]

ampere X

ohmX

[resistance]

volt X

As the air is compressed, the work done on the air causes its temperature to increase.

What is Thermodynamic Process?

A thermodynamic process is a physical change that occurs in a system as it exchanges heat and/or work with its surroundings. It involves a change in one or more thermodynamic variables, such as temperature, pressure, volume, or entropy. There are four main types of thermodynamic processes: isothermal, adiabatic, isobaric, and isochoric.

When we blow air with our mouth narrow open, we feel the air cool because of the adiabatic expansion of the air. Adiabatic expansion is a thermodynamic process in which the air expands rapidly without losing or gaining any heat to or from the surroundings. As the air expands, it does work against the pressure of the surrounding atmosphere, and this work causes the temperature of the air to decrease. This is known as the Joule-Thomson effect.

On the other hand, when the mouth is made wide open, we feel the air warm because of the adiabatic compression of the air. Adiabatic compression is a thermodynamic process in which the air is compressed rapidly without losing or gaining any heat to or from the surroundings.

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