which system contains more atoms: 1 mol of helium or 1 mol of neon

The principle focus of a concave mirror is the point on its principal axis where parallel rays of light, initially traveling parallel to the axis, converge after reflection.\(\)

Answer:

distance 1 metre

Explanation:

displacement 3 metre

Distance is a scalar quantity that refers to "how much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.much ground an object has covered" during its motion. Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Answer:

40.4 m/s

Explanation:

v = v o  - at

  = 60 - 9.81 (2) = 40.4 m/s

The weight of the combined system is 58,800 N.

To determine the weight of the combined system, we need to consider the weight of the plastic tank and the weight of the water it contains.

Step 1: Weight of the Plastic Tank

The weight of an object is given by the equation W = m ×  g, where W is the weight, m is the mass, and g is the acceleration due to gravity. Since the mass of the plastic tank is 6 kg, and the acceleration due to gravity is approximately 9.8 m/s², we can calculate the weight of the tank as follows:

W_tank = 6 kg ×  9.8 m/s² = 58.8 N

Step 2: Weight of the Water

The weight of the water is determined by its mass and the acceleration due to gravity. The density of water is given as 1000 kg/m³, and the volume of the tank is 0.18 m³. We can calculate the mass of the water using the equation m = density * volume:

m_water = 1000 kg/m³ × 0.18 m³ = 180 kg

Now, we can calculate the weight of the water:

W_water = 180 kg × 9.8 m/s² = 1764 N

Step 3: Weight of the Combined System

To find the weight of the combined system, we sum the weights of the tank and the water:

W_combined = W_tank + W_water = 58.8 N + 1764 N = 1822.8 N

Therefore, the weight of the combined system, consisting of the 6-kg plastic tank filled with water, is 1822.8 N.

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Answer:

head of water or mouth

Explanation:

Answer:

The beginning of a river is called the source.

Explanation:

I got this correct on oddyseyware

Sound waves are produced when something is caused to vibrate.

This can be defined as the pattern of disturbance caused by the movement of energy traveling through a medium.

Sound is produced when a substance vibrates leading to movement in surrounding air molecules.

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The vector v with a magnitude of 6 and the same direction as u = [1, 1] is v = [6, 6].

The given vector u = [1, 1] has a magnitude of √(1² + 1²) = √2. To find a vector v with a magnitude of 6 and the same direction as u, we need to scale up the vector u by a factor of 6/√2.

The unit vector in the same direction as u is u/|u| = [1/√2, 1/√2]. To obtain v, we multiply this unit vector by the desired magnitude of 6, resulting in v = 6 × [1/√2, 1/√2] = [6/√2, 6/√2] = [3√2, 3√2]. Therefore, the vector v with a magnitude of 6 and the same direction as u is v = [3√2, 3√2], which can be simplified as v = [6, 6].

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The vector v with a magnitude of 6 and the same direction as u = [1, 1] is v = [6, 6].

The given vector u = [1, 1] has a magnitude of √(1² + 1²) = √2. To find a vector v with a magnitude of 6 and the same direction as u, we need to scale up the vector u by a factor of 6/√2.

The unit vector in the same direction as u is u/|u| = [1/√2, 1/√2]. To obtain v, we multiply this unit vector by the desired magnitude of 6, resulting in v = 6 × [1/√2, 1/√2] = [6/√2, 6/√2] = [3√2, 3√2]. Therefore, the vector v with a magnitude of 6 and the same direction as u is v = [3√2, 3√2], which can be simplified as v = [6, 6].

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Answer:

The same amount of wax exists before and after the change.

Explanation:

The melting of wax is a physical change and not a chemical change. During a physical change, no new substance is formed as chemical reactions do not take place. In a chemical change, however, new substances are formed because chemical reactions do take place.

In addition to that, both physical and chemical changes obey the law of conservation of matter which states that matter can neither be created nor destroyed but can be transformed from one form to another. It also entails that the mass of a substance present before a reaction should be equal to the mass obtained after the reaction.

In this case, the candle just simply changed its state from solid to liquid. This means that the total mass of the candle that existed as a solid will be the same as that of the liquid state.

Answer:

The answer is C). The same amount of wax exists before and after the change.

Explanation:

The reason for this is simple. If you put a block of wax in a pan, and put it on the scale, (lets say it weighs 2 pounds) it will way two pounds. If you stick it on a stove, and it melts, does it weigh the same amount? Yes, it does. This is because none of the wax left the pan. It just moved around. The only difference is that it is a liquid. It still has the same amount of wax.

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The unmanned SpaceX rocket that exploded minutes after taking off was launched from Cape Canaveral, Florida, which is located in the United States.

An unmanned SpaceX rocket, known as the Falcon 9, exploded a few minutes after its launch from the Cape Canaveral Space Launch Complex in Florida, United States. The incident occurred on [date]. The rocket was carrying [payload information] and was intended for [mission objective].

The explosion took place during the ascent phase of the rocket's flight, resulting in a catastrophic failure. The exact cause of the explosion is typically investigated by SpaceX and relevant authorities to determine the root cause, which could range from technical malfunctions to operational errors.

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If someone is a "weekend warrior," meaning they only participate in physical activity on the weekends, there are a few things a trainer could do to help them stay safe and get the most out of their workouts:

1. Be their coach: A trainer can act as a coach, guiding the individual through their workouts and helping them to improve their form and technique. They can also help the individual set realistic goals and create a training plan that takes into account their limited time for physical activity.

2. Include exercises that mimic the activity: To help the individual prepare for their chosen activity, the trainer can include exercises that mimic the specific movements involved in that activity. For example, if the individual enjoys playing tennis on the weekends, the trainer could include exercises that focus on improving their agility, footwork, and upper body strength.

3. Emphasize safety: It is important for the trainer to emphasize safety, especially if the individual is only participating in physical activity on the weekends. They can help the individual warm up properly before their workouts, use appropriate equipment, and avoid overexertion or pushing themselves too hard.

4. Modify the program: If the trainer determines that the individual's chosen activity is not safe for them due to pre-existing health conditions or injuries, they can modify the program to include other activities that are safer for the individual.

Therefore, a trainer can be a valuable resource for weekend warriors, helping them to stay safe, improve their performance, and achieve their fitness goals.

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The height of the cliff is 8.7 meters while 65kg mass falls off a cliff and hits the ground with the velocity of 18.25m/s.

Velocity is a measure of an object's speed and direction of motion. It is a vector quantity, meaning it has both magnitude (speed) and direction. Velocity is often represented by the symbol "v" and is usually measured in meters per second (m/s). The velocity of an object can be changed by applying a force to it, causing it to accelerate. The acceleration can be positive, negative, or zero, depending on the direction and magnitude of the force.

Calculation for finding height of the cliff

The equation of motion to find the height of the cliff

\(h = vi \times t + 1/2 \times a \times t^2\)

where h is the height of the cliff, vi is the initial velocity (which is 0 m/s because the object is starting from rest), t is the time it takes to fall, and a is acceleration due to gravity \((9.8 m/s^2)\).  Final velocity of the object \((18.25 m/s)\) to find t should be used.

\(vf^2 = vi^2 + 2\times a \times h\)

\(18.25^2 = 0 + 2 \times9.8 \times h\)

Hence,

\(h = (18.25^2) / (2 \times9.8) = 170.5625 m/s^2 / 19.6 m/s^2 = 8.7 meters\)

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The acceleration of the eraser is 169.19 m/s².

A body travelling in a circle has centripetal acceleration. Due to the fact that velocity is a vector quantity (i.e., it has both a magnitude and a direction), when a body travels in a circle, its direction is continually changing, which causes a change in velocity, which results in an acceleration.

Given that angular velocity of the eraser: ω = 127 rpm

= 126×2π/60 radian/second

= 13.2 radian/second.

radius of the circle: r = 0.974 meter.

Hence, its centripetal acceleration is = ω²r

= 13.2×13.2×0.974 m/s²

=169.19 m/s².

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Answer:

True....................

Answer:

approximately 9.83 metres per second

Explanation:

Happy to Help

Answer: physical characteristic during the formation of the solar system most significantly contributed to the distinction between the two types of planets

Instead, look for the crucial physical characteristic that, during the formation of the solar system, distinguished between the two kinds of planets.

Explanation: What characteristics does the solar system have in terms of physics?

Dimensions of the Solar System

The novice teacher lists the characteristics of the solar system's constituent parts. defining ideas The Sun is the centre of the solar system, which also includes planets, dwarf planets, moons, comets, asteroids, meteoroids, dust, atomic particles, electromagnetic radiation, and magnetic fields.

Which two broad categories would you say our solar system's planets fall under?

The two categories of planets—terrestrial and giant—are typically used to categorize them. The four inner planets make up the four terrestrial planets: Mercury,

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If an inflated beach ball seems only partially inflated in the morning, then it will appear more inflated after being left out in a hot, sunny spot for several hours. This is because heat causes air molecules to move faster and spread apart, which leads to an increase in air pressure inside the ball.

As a result, the beach ball will become more fully inflated as the air pressure inside it increases due to the exposure to the hot, sunny spot.

Another factor that could contribute to the beach ball appearing more inflated after being left out in the hot, sunny spot for several hours is the expansion of the rubber material of the beach ball.

As rubber material absorbs heat, its molecules vibrate more rapidly, which causes the rubber to expand. This expansion can cause the beach ball to appear more inflated than it did in the morning.

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To confirm the missing mass dissolved in the aqueous layer, you can perform a process called evaporation followed by weighing the residue.

In this method, you would first collect the aqueous layer containing the dissolved substance.

Then, evaporate the water from the solution using an evaporating dish and a heat source.

Once all the water has evaporated, the dissolved substance will be left behind as a solid residue.

Weigh this residue using a precision balance to determine the missing mass.

Summary: By evaporating the water from the aqueous layer and weighing the remaining solid residue, you can confirm the missing mass that was dissolved in the aqueous layer.

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Answer:

Energy transfer, I believe.

Explanation:

When the energy moves from one point to the other, this is known as energy transfer. Hence, option A is correct.

The capacity to perform work is known as energy in physics. Potential, kinematic, heat, electromagnetic, chemical, nuclear, and other different types are all possible. As energy is transferred of one body to another, there is also heat and work. Energy is always categorized after it has been transported based on its nature. As a result, heat transfer may result in thermal energy, while labor done may result in mechanical energy.

Motion is a common characteristic of all energy types. Whenever a body is in motion, for instance, it contains energy. Even when at rest, a tensioned object like a springs or bow has the ability to move; this is due to the structure of the object, which carries potential energy.

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Answer:

1.  Current in the circuit; 1.2 Amps

See attached image for the circuit.

2.  Equivalent resistor = 3 Ω

I = 0.3 amps

Potential difference across the battery terminals is: 0.9 V

Explanation:

Part 1.

The internal resistance of 2 ohms is simply added to the circuit in series as shown in the attached image.

Since now we have two resistances in series (2 ohms and 3 ohms) the total of this series combination is 5 ohms. Using Ohm's law, we can derive the current running through the circuit:

\(V=I\,\,R\\6\,V=I\,(5\,\Omega)\\I=\frac{6}{5} \,amps\\I=1.2\,\,amps\)

Part 2.

Now we have a 1.5 V battery with a 2 ohm internal resistance, connected to two identical 6 ohm resistors.

a. The equivalent resistance presented by the two resistors in parallel:

\(\frac{i}{R_e} =\frac{1}{6\,\Omega} + \frac{1}{6\,\Omega} =\frac{1}{3\,\Omega} \\R_e=3\,\Omega\)

b. Now the circuit can be represented by a 2 ohm resistor (internal battery resistance) plus a 3 ohm parallel equivalent resistor in series. That is a 5 ohm total resistance. Then Ohm's law becomes:

\(V=I\,\,R\\1.5\,V=I\,(5\,\Omega)\\I=\frac{1.5}{5} \,amps\\I=0.3\,\,amps\)

c. The potential difference across the battery terminals must be the battery's EMF minus the potential drop in its internal resistance:

\(1.5\,V - (0.3\,\,amps)\,(2\,\Omega)=(1.5-0.6)\,V=0.9\,V\)

The speed of the raft immediately after the diver jumps is 0.6 m/s.

After the swimmer jumps, the momentum of the system is still conserved, but it is no longer zero, since the swimmer is now moving. We can use the equation:

(m1v1 + m2v2)before = (m1v1 + m2v2)after

We want to solve for v2, velocity of the raft immediately after the jump.

Before jump, velocity of  raft is zero, so we can simplify  equation to:

m1v1 = m2v2

Substituting in  values we know, we get:

60 kg * 1.5 m/s = 150 kg * v2

Simplifying, we get:

v2 = (60 kg * 1.5 m/s) / 150 kg = 0.6 m/s

So the speed of the raft immediately after the diver jumps is 0.6 m/s.

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Answer: the answer is b “The warmer a region of the atmosphere is, the more infared radiation it emits”

Explanation:

Answer:

a

Explanation:

i got it right

Answer:

Least count of an instrument is one of the very important tools in order to get accurate readings of instruments like vernier caliper and screw gauge used in various experiments. Least count uncertainty is one of the sources of experimental error in measurements.

To minimize heat leak in an IR detector, the sensor housing is held at a low temperature of 80 °K using a mechanical cooler. The sensor is mounted to a frame that operates at a higher temperature of 300 °K. This temperature difference creates a thermal gradient, which causes heat transfer between the two components.

To minimize heat transfer, four identical thin-walled hollow tubes are used. These tubes are 5 cm long with an outer diameter of 1 cm. The thermal conductance of each tube needs to be low enough to limit the total heat leak to less than 400 mW.

To achieve this, materials with low thermal conductivity can be used for the tubes. Additionally, the tubes can be designed with multiple layers or insulation to further reduce heat transfer. It is important to optimize the thermal design and insulation to meet the required heat leak limit.

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The speed of traveling waves on the string is 48.6 m/s.

The fundamental frequency of a string that is bound at both ends and is under tension is calculated as follows:

f = v/2L

Where v is the velocity of waves on the string and L is the length of the string.

The third harmonic frequency of the standing wave can be expressed as f₃ = 3f₁. Therefore,864 = 3f₁.

Simplifying the above expression, we obtain f₁ = 864/3 = 288

Using the formula above, we can calculate the velocity v of the string as follows:

v = 2Lf₁

Substituting the values, we get:

v = 2(0.94 m)(288 Hz)

Evaluating the above expression gives us the velocity of the string as v = 48.6 m/s. Thus, the speed of traveling waves on the string is 48.6 m/s.

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Answer:

3 every second

Explanation:

Answer:

How do you find out the missing masses in a balloon?

Well, actually you can't find the missing masses in a balloon. Why?

Because the mass of the mass of balloon, it can't see the mass of it, it only see if it the balloon is deflated or inflated.

Explanation:

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In actuality, an object's velocity rises by 9.8 m/s2, thus it reaches 9.8 m/s by the time it begins to fall.By the time it has been falling for 2 seconds (9.8 m/s plus 9.8 m/s), it is moving at 19.6 m/s, and so on.

Gravity will cause any object to move forward at a rate of 32 feet per second each second.

Choose the length of the item's descent.We'll use an 8-second sample as our example.Its final free fall speed (just before it touches the earth) is calculated using equation v = v0 + gt = 0 + 9.80665 * 8 and equals 78.45 m/s.Find the free-falling distance using the formula s = (1/2)gt2: 0.5 * 9.80665 * 82 = 313.8 meters

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Answer:

it might be b maybe

Explanation:

The potential energy is highest on a marble roller coaster at the highest point of the track.

The potential energy of an object is directly related to its height and its position relative to the reference point. In the case of a marble roller coaster, as the marble climbs up the track, it gains potential energy due to its increased height.

At the highest point of the roller coaster track, the marble reaches its maximum elevation, and thus, its potential energy is at its highest point.

As the marble moves downhill from the highest point, its potential energy decreases and is converted into kinetic energy, which is the energy of motion.

At the bottom of the track, where the marble reaches its lowest point, the potential energy is at its minimum because the height is at its lowest and the marble has converted most of its potential energy into kinetic energy.

The potential energy is highest on a marble roller coaster at the highest point of the track. This is where the marble reaches its maximum elevation and has the greatest amount of potential energy due to its height. As the marble moves downhill, its potential energy decreases and is converted into kinetic energy.

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Answer:

Net acceleration = 3.5m/s²

Explanation:

Given the following data;

Mass, m = 40kg

Normal force, Fn = 400N

Applied force, Fapp = 195N

Force of friction, Ff = 55N

Mathematically, the net force is given by the formula;

\( F_{net} = F_{app} - F_{f}\)

Substituting into the equation, we have;

\( F_{net} = 195 - 55 \)

\( F_{net} = 140 \)

To find the acceleration;

\( F_{net} = ma\)

Making acceleration "a" the subject of formula;

\(a = \frac {F_{net}}{m} \)

\(a = \frac {140}{40} \)

Net acceleration, a = 3.5m/s²