Analyze: How do the positions of the hot and cold water affect th
e speed of convection?

Mass may be determined using the formula: mass = volume density. The gravitational force acting on a mass is quantified by its weight. The "kilogramme" is the kilogramme, which is the SI unit of mass. Weight in the SI is measured in Newtons (N).

If we are aware of the acceleration and force of the item, we may use Newton's Second Law of Motion to determine its mass. With this in mind, force is equal to mass times acceleration. We can thus calculate the mass of the item in issue by dividing the force by the acceleration.

The response force applied to a mass-containing object by the ground or a plane is known as the normal force.

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The formula for calculating mass is Mass = volume × density

Mass = volume density is a formula that can be used to calculate mass. The weight of a mass serves as a measure of the gravitational force exerted on it. The SI unit of mass known as the kilogram is referred to as the "kilogramme". The SI uses Newtons to measure weight (N).

Newton's Second Law of Motion can be used to calculate an object's mass if we know its acceleration and force. In light of this, force is defined as mass times acceleration. Hence, by dividing the force by the acceleration, we can get the item's mass.

The reaction force applied to a mass-containing object by the ground or a plane is known as the normal force.

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Answer:An object has balanced forces acting on it and constant velocity.

Explanation:

Answer:

silk-ties fabric

rubber-rubber bands

cellulose-jeans

starch-food and paper

dna-genetic

Explanation:

I'm pretty sure this poor guy could never have been accepted for astronaut training, much less a mission to the Moon.  

He weighs something like 335 pounds when he's ON THE MOON !

If he has enough fuel, and survives a trip back to Earth, he'll weigh around 9,080 Newtons here.  That's like 2,040 pounds ... durn close to a ton ! !

Answer:

Gravitational field strength:

Moon is 1.6N/kg

Earth is 9.8N/kg or 10N/kg

Moon:

Weight = mass x gravitational field

1500N = m x 1.6N/kg

÷1.6 both sides

937.5 = m

Mass of astronaut is 937.5kg

(Your mass doesn't change, no matter where you go, in space)

Earth:

Weight = mass x gravitational field

= 937.5kg x 9.8 N/kg

= 9187.5N

Or

Weight = mass x gravitational field

= 937.5kg x 10 N/kg

= 9375N

Thus, the astronaut's weight will be 9187.5N or 9375N on Earth.

Hope this helps!

The value of the total length of spring when mass 2m is attached to it and extended is L + 2d.

A metal spring is moved from its equilibrium position when it is stretched or compressed. As a result, it encounters a restoring Force that usually causes the spring to retract back to its initial position. It is known as spring force.

Initial mass attached to the spring, m₁ = m

Natural length of the spring = L

Distance extended by the spring = d

Final mass attached to the spring, m₂ = 2m

The expression for the initial displacement or extension of the spring is given by,

d = mg/k

So, d ∝ m

So, initially with an extension of d, the total length of the spring became,

ΔL₁ = L + d

So, the final displacement of the spring can be calculated as,

d'/d = m₂/m₁

d' = m₂d/m₁

d' = 2m x d/m

So, d' = 2d

Therefore, the total length of the spring becomes,

ΔL₂ = L + d'

ΔL₂ = L + 2d

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Upthrust is the upward force exerted by fluids on the surface of an object immersed in fluids. Thrust:- It is the force acting perpendicular to the surface. Upthrust:- It is the upward force exerted by the fluid on the surface of an object immersed in liquid.

I hope it's help you

If Boy A exerts a force of 3000 newtons on the box to the right and Boy B exerts a force of 5000 newtons in the opposite direction. then combined force (net force) on the box is 2000 N to the left.

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. When Net force is zero which is called as balanced force.

Given,

F₁ = 3000 N

F₂ = -5000 N

Net Force = F₁ + F₂

Net Force = 3000 N  - 5000 N = -2000N negative sign is for left.

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Answer:the answer is c

Explanation: In contrast, light waves CAN travel through a vacuum, and do not require a medium. In empty space, the wave does not dissipate grow smaller no matter how far it travels, because the wave is not interacting with anything else. However, light can also travel within some materials, like glass and water.

If the scattering is to cause a 10.0 change in wavelength. The wavelength of the photon should be 2.65 x\(10^{-5}\) nm.

In physics, a periodic wave's wavelength is the length that it repeats over in space. It is a characteristic of both traveling and standing waves as well as various spatial wave patterns. It is the separation between two wave points that are sequentially linked and in the same phase, such as two close-by zero crossings, crests, or troughs. The spatial frequency is the wavelength's reciprocal. The Greek letter lambda, sometimes known as the "wavelength," is a typical way to depict it. Wavelength is commonly used to describe the sinusoidal wave envelopes, modulated waves, and waves produced by the interference of several sinusoids.

To find the wavelength of the incident photon in which results in scattering as :

The incident ray wavelength= \(\lambda\)

The scatter ray wavelength= = 1.1 \(\lambda\).

The wavelength is given using the equation of scattering as,

\(\lambda_{1} -\lambda=\frac{h}{m_{p}c }(1-cosx)\)

Substituting as,

\(\lambda_{1} -\lambda=\frac{6.626\times 10^{-34}(1 - cos 180) }{1.6726\times 10^{-27}\times3\times 10^{8} }( 0.1\lambda)\)=2.65

Hence, The wavelength in which scatters is 2.65x\(10^{-5}\) nm.

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Answer: the answer is A 6.3 V

Explanation:

Answer:

there is no drag in a vacuum (why is father in a vaccum)

Explanation:

there is nothing to hit and slow the object other than gravity like dust or air

The path of motion of a plane is described by the equation y = (0.3x2 )ft, where x = (3 t)ft (t is in sec), the velocity and acceleration after 2 sec are 7.2 ft/s and 32.4 ft/s^2 respectively.

The equation of motion of a plane is given by y = (0.3x^2) ft. Let x = 3t. To calculate the velocity and acceleration of the plane after 2 seconds, we have to differentiate the equation twice with respect to time t to find the velocity and acceleration of the plane. Differentiating the equation with respect to time t, we have:v = dy/dt (0.3x^2)= 0.6xt ft/s

At t = 2s, x = 3t = 3 x 2 = 6 ft

So, the velocity of the plane after 2 sec is:v = 0.6 x 6 x 2 = 7.2 ft/s

Differentiating the equation with respect to time t, we get the acceleration of the plane:a = dv/dt = 0.6x(ft/s^2)

Differentiating the equation x = 3t with respect to time t, we have:dx/dt = 3ft/sAt t = 2s, x = 6 ft

So, a = 0.6 x 6 x (3)^2 = 32.4 ft/s^2

Therefore, the velocity and acceleration of the plane after 2 seconds are 7.2 ft/s and 32.4 ft/s^2 respectively.

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The rate of acceleration due to the increase in the mass of the boat is 0.04 m/s2.

The mass of the boat is 250 kg and it is coasting through the water at speed 3.00 m/s with its engine in neutral. The rain is falling vertically and accumulating in the boat at the rate of 10.0 kg/hr.

To calculate the rate of acceleration due to the increase in the mass of the boat, we will use the equation F = ma. F is the force, m is the mass, and a is the acceleration. We know the force (10.0 kg/hr) and the mass (250 kg) so we can calculate the acceleration:

a = F/m

  = 10.0 kg/hr / 250 kg

  = 0.04 m/s2

This is the rate of acceleration due to the increase in mass of the boat. The boat's speed will therefore increase by 0.04 m/s each second. If the initial speed of the boat is 3.00 m/s, the speed after one second will be 3.04 m/s, and so on. The boat's speed will continue to increase as the mass of the boat increases due to the rain.

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The correct option is e.

The Keck telescopes are twin telescopes that have a mirror assembly made up of 36 smaller hexagonal mirrors working together as they used active optics technology. The correct answer is option e.

They were able to combine the advantages of a refracting telescope and a reflecting telescope. They used the active optics technology to overcome the difficulties that would otherwise be faced when creating a mirror larger than 10 meters. The Keck telescopes were the largest in the world when they were completed.

They were the first instruments to employ a novel technique known as "segmented mirror technology," which allowed for the construction of mirrors up to 30 meters in diameter.

In addition, the Keck telescopes had a motorized drive system that allowed them to move smoothly, and their mountaintop location reduced atmospheric interference, allowing them to capture sharp images of deep space. Other large telescopes did not have these features.

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A long wave with a wavelength of 1,000 miles is equivalent to 1,609.34 kilometers

In radio, longwave, long wave or long-wave, and commonly abbreviated LW, refers to parts of the radio spectrum with wavelengths longer than what was originally called the medium-wave broadcasting band.To convert the wavelength from miles to kilometers, you can use the conversion factor of 1 mile = 1.60934 kilometers.

Step 1: Start with the given wavelength of 1,000 miles.
Step 2: Multiply the wavelength by the conversion factor of 1.60934 kilometers per mile.
  1,000 miles × 1.60934 kilometers/mile = 1,609.34 kilometers

Therefore, a long wave with a wavelength of 1,000 miles is equivalent to 1,609.34 kilometers.

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Answer:

False. Not everything can turn into a black hole. The formation of a black hole requires a massive object, typically a star, to collapse under its own gravity. This collapse causes the object to become so dense that it creates a singularity, a point of infinite density at the center of the black hole, which is surrounded by an event horizon, the point of no return beyond which nothing, not even light, can escape. So, only objects with sufficient mass and gravity can become black holes.

Explanation:

Answer:

1.6 m/s

Explanation:

First you need to find the momentums of each disc by multiplying their velocities with mass.

disc 1: 7*1= 7 kg m/s

disc 2: 1*9= 9 kg m/s

Second, you need to find the total momentum of the system by adding the momentums of each sphere.

9+7= 16 kg m/s

Because momentum is conserved, this is equal to the momentum of the composite body.

Finally, to find the composite body's velocity, divide its total momentum by its mass. This is because mass*velocity=momentum

16/10=1.6

The velocity of the composite body is 1.6 m/s.

Final velocity of the electron, v = 5.4 × 10⁶ m/s.

Potential difference, ΔV = 2500 V;

Charge on an electron, q = 1.6 × 10⁻¹⁹ C;

Mass of an electron, m = 9.1 × 10⁻³¹ kg

the final velocity of an electron using the formula, v = √((2qΔV) / m)Where, v = final velocity of an electron after traveling over a potential difference ΔVq = charge on the electron , m = mass of the electron.

Substituting the given values in the above equation,

we getv = √((2 × 1.6 × 10⁻¹⁹ C × 2500 V) / 9.1 × 10⁻³¹ kg)

Therefore, the final velocity of the electron is 5.4 × 10⁶ m/s.

An electron of mass 9.1 × 10⁻³¹ kg is released from rest and travels over a potential difference of 2500 V.

We can calculate the final velocity using the formula for kinetic energy, K = (1/2) mv²

Where, K = Kinetic energy of the electron , m = mass of the electron , v = final velocity of the electron.

The initial kinetic energy of the electron is zero, as it is released from rest.

Hence, the total energy gained by the electron is equal to its final kinetic energy.

The potential difference ΔV between the two points is given as 2500 V.

Hence, the work done by the electric field in moving an electron of charge q from one point to another with a potential difference ΔV is given by W = qΔV

We know that the work done is equal to the change in kinetic energy, as per the work-energy theorem.

So, the work done by the electric field in accelerating an electron is given byqΔV = (1/2) mv²Solving for v,v = √((2qΔV) / m)

On substituting the values given in the question,

we get v = √((2 × 1.6 × 10⁻¹⁹ C × 2500 V) / 9.1 × 10⁻³¹ kg)

Final velocity of the electron, v = 5.4 × 10⁶ m/s.

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A resting electron is liberated, and it moves over a 2500 volt potential difference. Therefore, the final velocity of the electron after traveling over a potential difference of 2500 V is approximately 5.93 x 10⁶ m/s.

The idea of energy conservation can be used to determine an electron's final velocity after it crosses a 2500 V potential difference. The change in the electron's potential energy caused by the electric potential difference can be transformed into kinetic energy.

The potential energy (PE) gained by the electron is given by:

PE = q × V

Where:

q is the charge of the electron (1.6 x 10⁻¹⁹ C),

V is the potential difference (2500 V).

The change in potential energy is equal to the change in kinetic energy:

ΔPE = ΔKE

Therefore, we have:

q × V = (1/2) × m × v²

Where:

m is the mass of the electron (9.1 x 10⁻³¹ kg),

v is the final velocity of the electron.

Rearranging the equation, we can solve for v:

v² = (2 × q × V) / m

v = √((2 × q × V) / m)

Plugging in the values, we have:

v = √((2 × (1.6 x 10⁻¹⁹ C) × (2500 V)) / (9.1 x 10⁻³¹ kg))

v = 5.93 x 10⁶ m/s

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The friction which acts on the object that is not moving is static friction, so, option A is correct.

Between two surfaces that are sliding or attempting to slide over one another, there is a force called friction. For instance, friction makes it challenging to push a book down the floor. Friction always moves an object in a direction that is counter to the direction that it is traveling or attempting to move.

Static friction is 0 for an object at rest on a level surface. Static friction generates an equal and opposite force that holds the book at rest if you push horizontally with a small force.

The static friction force grows to meet the force as you push harder. The book eventually moves when the maximum static friction force is reached.

Thus, the friction is static.

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In order to determine the average distance traveled by the car and the washer from the top of the track, we would need additional information or context about the specific scenario or experiment. The average distances traveled would depend on factors such as the length of the track, the initial conditions of the car and washer, and any forces or obstacles affecting their motion.

Without specific details, it is not possible to calculate the average distances traveled. However, in a typical scenario, the average distance traveled by an object can be calculated by taking the total distance traveled and dividing it by the number of trials or instances of measurement.

If you can provide more information about the track, the initial conditions, or any constraints imposed on the car and washer, I can help you calculate the average distances traveled.

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All of the above options are the characteristics found in the thermocouple materials. Thermocouples are used to measure temperature variations.

They work based on the Seebeck effect, which states that when two dissimilar metals are brought together at two different temperatures, an electromotive force is generated, which is proportional to the temperature difference between the two junctions.Thermocouple MaterialsThermocouple wires are made up of two dissimilar materials. The wire's strength and temperature range are determined by the materials used to make it.

Some of the commonly used thermocouple materials are mentioned below:Chromel (90% nickel and 10% chromium) and alumel (95% nickel, 2% manganese, 2% aluminium, and 1% silicon) are commonly used in type K thermocouples, which can handle temperature ranges from -200 °C to 1350 °C. Type J thermocouples are made up of iron and constantan and can handle temperatures ranging from -200 °C to 1200 °C.Thermocouples with base-metal wires such as types E, T, J, and K are the most common. They're usually made of copper, iron, nickel, and combinations of these materials. These wires have the advantage of being both affordable and extremely robust.

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Answer:

an apple because its gaining speed as it falls

Explanation:

Answer:

627.2 N

Explanation:

The Normal Force (N) is the force the ground exerts on the sled, which is equal to the weight (W) of the sled.  These forces act in the y direction.  The other forces, Tension, Applied Force, Force of Friction all act in the x direction.

N = W = mg = (64.0 kg)(9.8 m/s²) = 627.2 N

Hyperhydration in athletes is a strategic approach used to optimize hydration levels. While it can be a pre-competition strategy, excessive fluid intake can lead to dangerous conditions like hyponatremia. Caution is advised.

Hyperhydration in athletes is a strategic approach used to enhance performance and optimize hydration levels before exercise or competition. It involves increasing fluid intake beyond normal levels to achieve a state of enhanced hydration.

Hyperhydration as a pre-competition strategy involves consuming additional fluids to achieve a fluid surplus in the body, increasing total body water. This can be done through careful planning and timed fluid intake, typically in the hours leading up to an event. The goal is to ensure the body is well-hydrated and prepared for the physical demands of the activity. Hyperhydration strategies may include the consumption of sports drinks, water, and electrolyte-rich fluids.

However, it is important to note that hyperhydration can become a dangerous medical condition if taken to extreme levels. Excessive fluid intake without proper monitoring and guidance can lead to a condition known as hyponatremia, where the blood sodium levels become dangerously diluted. Hyponatremia can cause symptoms ranging from mild discomfort to severe health complications, including organ dysfunction and even death. Therefore, athletes should approach hyperhydration with caution and under the guidance of healthcare professionals or sports nutritionists to prevent the risks associated with overhydration.

In summary, hyperhydration can be a normal condition in athletes, serving as a pre-competition strategy to optimize hydration levels and enhance performance. However, it is essential to understand the potential risks involved and avoid excessive fluid intake to prevent the development of dangerous medical conditions such as hyponatremia.

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Explanation:

hope it is helpful to you

Answer:

lm.ao i was stuck too when i was on that

Explanation:

what u need to know sis?

speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.

Answer:

a = 5 m / s²   and    x = 562.5 m

Explanation:

Let's apply the kinematics relations

          v = v₀ + at

          v² = v₀² + 2a x

In this case, as the car stops, its final speed is zero (v = 0) and the acceleration must be opposite to the speed, that is, negative

           0 = v₀ - a t

           a = v₀ / t

let's calculate

           a = 75/15

           a = 5 m / s²

let's look for the distance

           0 = v₀² - 2a x

           x = v₀² / 2a

let's calculate

           x = \(\frac{75^2}{2 \ 5 }\)

           x = 562.5 m

Answer:

Calculations involving forces

The resultant force is the single force that has the same effect as two or more forces acting together.

Two forces in the same direction

Two forces that act in the same direction produce a resultant force that is larger than either individual force.

You can easily calculate the resultant force of two forces that act in a straight line in the same direction by adding their sizes together.

Example

Two forces, 3 N and 2 N, act to the right. Calculate the resultant force.

Two arrows, one above the other, both pointing to the right, one labelled 2 N and one labelled 3 N. Then an equals sign and then another arrow to the right labelled 5 N.

Two forces acting in the same direction

Resultant force F = 3 N + 2 N = 5 N to the right.

The resultant force is 5 N to the right.

Two forces in opposite directions

Two forces that act in opposite directions produce a resultant force that is smaller than either individual force.

To find the resultant force subtract the magnitude of the smaller force from the magnitude of the larger force.

The direction of the resultant force is in the same direction as the larger force.

Example

A force of 5 N acts to the right, and a force of 3 N act to the left.

Calculate the resultant force.

Two arrows, one above the other, one pointing to the left, labelled 2 N, the other pointing to the right labelled 3 N. Then an equals sign, with an arrow to the right labelled 1 N.

Two forces acting in opposite directions

Resultant force F

Resultant force F = 5 N - 3 N = 2 N to the right.

The resultant force is 2 N to the right.

Explanation:

Thanks me later

Increasing the distance between an electromagnet and the compass will cause the observed effect of the compass to decrease in strength

The strength of the magnetic field produced by an electromagnet decreases as the distance from the electromagnet increases. This means that if the distance between the electromagnet and the compass increases, the magnetic field that the compass is experiencing will weaken.

As a result, the observed effect of the compass will decrease in strength as the distance between the electromagnet and the compass increases.

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Answer:

there is no diagram, but i can try to help

Explanation:

strong winds bonding together (i.e hot and cold) help form the tornado, depending on the weather depends on how long it can go on, if more hot and cold are feeds into it, it will get faster and last longer. it is just like dust devils, it is wind and dirt mixing to make a tornado, the more wind and dirt the worst it will be