Sophie and Martin are in the garden on a hot day. Sophie has a hot cup of tea and Martin has a cold cola. Who has the drink that will be evaporating fastest?

Answer:

21.76J

Explanation:

F=ma

where:

m=mass

a=acceleration

Kamaria's mother should pull her with a force of  21.76 Newton if she (Kamaria) wants her acceleration to be 0.80 m/s².

In order to accelerate a body of mass 'm kg' with an acceleration of 'a m/s²', a force of magnitude equal to the product of mass and required acceleration is required. Mathematically -

F = m x a

Given is a girl learning how to ice skate. She wants to move with an acceleration of 0.80 m/s² and her mass is 27.2 kg.

From the definition of force, we can write -

F = m x a

F = 27.2 x 0.8

F = 21.76 Newton

Therefore, Kamaria's mother should pull her with a force of  21.76 Newton if she (Kamaria) wants her acceleration to be 0.80 m/s²

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To determine the force required to keep a 10 mg water droplet moving in the circular arc created by a shaking dog's fur, we can use the centripetal force formula:

F = m * (v^2 / r)

Where F is the centripetal force, m is the mass of the droplet, v is the velocity of the fur, and r is the radius of the circular arc.

Converting the mass of the droplet to kilograms:

m = 10 mg = 10 * 10^(-6) kg

Substituting the given values:

F = (10 * 10^(-6)) * ((2.5)^2 / 0.16)

Calculating this expression gives us the centripetal force required to keep the droplet moving in the circular arc.

To find the ratio of this force to the weight of the droplet, we divide the centripetal force by the weight of the droplet. The weight of the droplet can be calculated using the formula:

Weight = mass * gravitational acceleration

Let's assume the gravitational acceleration to be approximately 9.8 m/s^2.

Weight = (10 * 10^(-6)) * 9.8

Finally, we can calculate the ratio of the centripetal force to the weight of the droplet by dividing the centripetal force by the weight.

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Torque:-

\(\\ \rm\Rrightarrow \tau =14(0.018)\)

\(\\ \rm\Rrightarrow \tau=0.25Nm\)

option B

According to the data given in the question the net force on the box is of 5 N.

All of the forces that are applied to an object are added up to form the net force. As a consequence of the fact that it (force) is a vector and therefore that two forces with identical magnitudes and opposing directions cancel each other out, the resultant force is the total of the forces, or put another way, the net force is just the total of all the forces.

Given data :

Force on box to the left side (F1) = 15 N

Force on box to the right side (F2) = 20 N

Because both forces are in opposite direction

Hence,

Net force = F2 - F1

Net force = 20 - 15

Net force = 5 N.

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Given

The concept of inertia forms the basis for Newton's Third Law of Motion

To find

The given statement is true or false

Explanation

The third law of motion states that every action has a equal and opposite reaction

Inertia is the property by virtue of which an object at rest tends to be at rest and object at motion tends to be at motion

Thus both the concept are not similar

Conclusion

The given statement is false

Answer:

560

Explanation:

56*10=560

hope this helps :3

if it did pls mark brainliest

Answer: 560 cats

Explanation: 56x10 = 560.

The angular momentum of the moon around the earth is 2.92 * \(10^{34}\) kg \(m^{2}\)/s

Angular momentum a vector quantity that is a measure of the rotational momentum of a rotating body or system, that is equal in classical physics to the product of the angular velocity of the body or system and its moment of inertia with respect to the rotation axis, and that is directed along the rotation axis.

m (mass of moon ) = 7.4 * \(10^{22}\) kg

orbit = 3.8 * \(10^{8}\) m

L = I ω

  = m \(r^{2}\)ω

  = 7.4 * \(10^{22}\)  * \((3.8 *10^{8} )^{2}\) * (2π / 27 * 24 * 3600)

  = 2.92 * \(10^{34}\) kg \(m^{2}\)/s

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A torque's characteristic direction can be categorized as either clockwise or counterclockwise.

The rotational counterpart of linear force is torque. Depending on the subject of study, it is also known as the moment, moment of force, rotating force, or turning effect. It represents a force's ability to cause a change in the body's rotational motion.

Magnitude is referred to as an object's maximal size and direction.

A torque's characteristic direction can be categorized as either clockwise or counterclockwise.

It is possible to describe the direction of a torque as clockwise or counterclockwise, and the magnitude of the torque produced by a given force is equal to Fd.

A torque's characteristic direction can be categorized as either clockwise or counterclockwise.

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Answer:

product

Explanation: it's the product of chlorine and sodium

Answer:

y

Explanation:

The salient values for this process would be the initial volume of the liquid water, the final volume of the water vapor, the pressure at which the process occurs (100 kPa), and the temperature at which the water begins to boil (which is dependent on the initial temperature of the water). We can use this equation to calculate the initial and final volumes of the water, and then subtract the two to get the volume change. This gives us a latent heat of vaporization of 2260 kJ/kg.

a. To show this process on a p-v diagram, we would draw a vertical line at 100 kPa (the constant pressure), starting from the initial volume of the liquid water. This would represent the process of heating the water until it reaches its boiling point, at which point it begins to evaporate. Then, we would draw a horizontal line at the final volume of the water vapor, indicating that the volume remains constant as the vapor is formed.

b. To calculate the volume change as the liquid changes to vapor, we need to use the ideal gas law, which states that PV=nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature. We can assume that the amount of water that evaporates is negligible compared to the total volume of the piston-cylinder device, so the number of moles of gas remains constant. We also know that the pressure is constant at 100 kPa, so we can simplify the ideal gas law to V=nRT/P. We can use this equation to calculate the initial and final volumes of the water, and then subtract the two to get the volume change.

c. To calculate the latent heat (i.e. enthalpy) of vaporization, we need to use the formula Q=mL, where Q is the heat transferred, m is the mass of the substance, and L is the latent heat of vaporization. We know that 0.5 kg of water evaporates, so we can use the latent heat of vaporization for water, which is 40.7 kJ/mol. To convert this to joules per kilogram, we need to divide by the molar mass of water, which is approximately 18 g/mol. This gives us a latent heat of vaporization of 2260 kJ/kg.

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Answer:

The noble gases are a group of chemical elements that make up Group 18 on the periodic table. These gases all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very low chemical reactivity.

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:1. Width of the slit. 2. Distance between slits. 3. Distance between slits and screen. 4. Wavelength of the incident light. 5. Refractive index of the medium.

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:

1. Width of the slit. The width of the slit can influence the diffraction pattern that is observed on a screen. When the width of the slit decreases, the central maximum of the diffraction pattern becomes broader, and the intensity of the secondary maxima reduces.

2. Distance between slits. The distance between the slits in the double-slit experiment also affects the pattern on the screen. The distance between the slits is equal to the spacing between the maxima. If the spacing between the slits decreases, the distance between the maxima decreases, and vice versa.

3. Distance between slits and screen. The distance between the slits and the screen is also a factor that can affect the diffraction pattern. When the distance increases, the spacing between the maxima becomes wider, and the intensity of the maxima decreases.

4. Wavelength of the incident light. The wavelength of the incident light is another factor that affects the diffraction pattern on the screen. When the wavelength increases, the spacing between the maxima increases, and vice versa.

5. Refractive index of the medium. The refractive index of the medium in which the light travels can also influence the diffraction pattern observed on a screen.

When the refractive index of the medium changes, the position of the maxima changes as well. These are the factors that can change the pattern observed on a screen during Young's double-slit experiment.

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Answer:

c:   spin

Explanation:

it's not curvature

The most applicable term to a discussion of angular momentum in the context of black holes is Spin. Thus, the correct option is C.

Angular Momentum is defined as the property of any rotating object which is given by the product of the moment of inertia of an object and the angular velocity of the rotating object. Angular momentum is a vector quantity and it has both the magnitude and direction. The examples of angular momentum are the rotation and revolution of the Earth.

When the astronomers claim that they have estimated the spin of a black hole, this means they have measured its angular momentum. This is the total angular momentum of all the materials on the Universe that ever crossed the event horizon and got trapped inside it.

Therefore, the correct option is C.

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The light cone, built of light paths, with 45 degree tilt, Therefore, boundary in spacetime  will berelative to your position at u.

The concept of a light cone is a fundamental aspect of spacetime geometry in relativity. It represents the region of spacetime that can be causally influenced by an event or point in spacetime. A light cone is constructed by considering all possible paths that light can take from the event, extending both into the future and the past. When we say the light cone has a 45-degree tilt, it means that the cone is symmetrical and expands equally in all directions. This tilt is relative to your position at the "u.e" (unspecified event), which serves as the origin of the cone. In other words, the light cone encompasses all events that can be reached by a light signal emitted from the event at the "u.e" and traveling at the speed of light.

The boundary of the light cone separates events that are causally connected to the "u.e" from those that are not. The inside of the cone represents events that can be influenced by the "u.e," whereas the outside represents events that are beyond the reach of any signals emitted from the "u.e."

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Answer:

When vectors are added or subtracted, the net force is called the resultant force.

Explanation:

Hope i helped, have a nice day/night

Neutralization: When an acid and a base are mixed, they react to form a salt and water. For example, when hydrochloric acid (HCl) is mixed with sodium hydroxide (NaOH), they react to form sodium chloride (NaCl) and water (H2O).

Combustion: When a fuel is burned in oxygen, it reacts to produce heat and light. For example, when methane (CH4) is burned in oxygen, it reacts to produce carbon dioxide (CO2) and water (H2O).

Synthesis: When two or more substances combine to form a new substance, it is called a synthesis reaction. For example, when hydrogen (H2) and oxygen (O2) combine, they form water (H2O).

Decomposition: When a compound breaks down into two or more simpler substances, it is called a decomposition reaction. For example, when water (H2O) is broken down by an electric current, it forms hydrogen (H2) and oxygen (O2).

Replacement: When one element replaces another element in a compound, it is called a replacement reaction. For example, when iron (Fe) reacts with copper sulfate (CuSO4), the iron replaces the copper to form iron sulfate (FeSO4) and copper (Cu).

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(a) The frequency of its rotation 0.25 Hz.

(b) The velocity is 1.57 m/s.

(c) The acceleration is 2.44 m/s².

The frequency of an object's rotation is the number of complete rotations it makes in a given amount of time.

frequency (f) = 1/period (T)

In this case, the period of the object's rotation is 4.0 seconds, so the frequency is:

f = 1/T = 1/4.0

f  = 0.25 Hz

The velocity of an object rotating in a circle can be calculated using the formula:

velocity (v) = 2πfr

where;

v = 2π x 1 x 0.25

v =  1.57 m/s

The acceleration is calculated as;

a = v² / r

a = (1.57²) / 1.0

a = 2.44 m/s²

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Answer:

1200

Explanation:

Answer:

2ms-2

Explanation:

F = ma

a = F/m

= 0.5 / 0.25

= 2ms-2

Answer 2m/s^2

Explanation:

mass=0.25kg

Force =0.5N

Acceleration=force/ mass

Acceleration=0.5/0.25

Acceleration=2

Acceleration =2m/s^2

Answer:

junk food, alcohol, soda, microwave food, candy, some sugary drinks

when the capacitors are connected in series across the 6.00V battery, the charge on each capacitor is 15.00μC and 37.50μC, respectively.

When capacitors are connected in series, the charge on each capacitor will be the same. To find the charge on each capacitor, we can use the formula Q = CV, where Q is the charge, C is the capacitance, and V is the voltage.

Given:

Capacitor 1: C₁ = 2.50σF

Capacitor 2: C₂ = 6.25σF

Battery voltage: V = 6.00V

Since the capacitors are connected in series, the total equivalent capacitance (Ceq) can be found using the formula:

1 / Ceq = 1 / C₁ + 1 / C₂

Substituting the given values, we get:

1 / Ceq = 1 / 2.50σF + 1 / 6.25σF

Simplifying the equation:

1 / Ceq = (2 / 5.00σF)

Taking the reciprocal of both sides:

Ceq = 5.00σF / 2

Ceq = 2.50σF

Now, we can calculate the charge on each capacitor using the formula Q = CV:

For Capacitor 1:

Q₁ = C₁ * V = 2.50σF * 6.00V = 15.00μC

For Capacitor 2:

Q₂ = C₂ * V = 6.25σF * 6.00V = 37.50μC

Therefore, when the capacitors are connected in series across the 6.00V battery, the charge on each capacitor is 15.00μC and 37.50μC, respectively.

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Answer:

its b

Explanation:

Answer:

True

Explanation:

The nucleus contains all of the mass of the atom. Almost all of the mass of the atoms is made up of protons and neutrons.

Answer:

both the neutrons and protons are located in the nucleus of an atom.

The temperature in Celsius and Kelvin are;

The temperature of a body is the measure of the degree of hotness or coldness of a body.

Also temperature can be defined as the measure of the average kinetic energy of a body.

The conversion of the temperature in degrees Celsius to kelvin is calculated as follows;

0°C = 273 K

150 K = 150 - 273 = -123⁰C

20 ⁰C = 20 + 273 = 293 K

500 K = 500 - 273 = 227⁰C

Thus, to convert from degrees Celsius to Kelvin we simply add 273 K and to convert from Kelvin scale to Celsius scale we simply subtract 273 from the Celsius temperature.

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Answer:

I think a Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion.”

Hope this help!:)

Answer:

Shown from explanation

Explanation:

You have heard that expression what ever goes up must come down that's usually used to mean when you throw an object up, it comes down on its accord. This is due to a force on the earth that occurs in nature known as gravity.

So when an object falls under this influence it's said to fall freely.

Note not all heavenly bodies have gravitational pull, from experience by scientists who went to the moon they found out whatever goes up keeps flying endlessly so in that case an external force is needed to keep objects in the moon on ground level.

Hence the parachute falls on earth freely without an external force but on the moon it must fall with an external force inputed on the parachute system.

This means in the earth we have free fall but in the moon no such thing exist. So a body falls freely when there is gravity.

Answer:

Explanation:

Just use the acceleration equation here:

\(a=-\frac{v}{t}\) where a = -9.8; velocity is also negative because it's falling down and down is negative. Filling in:

\(-9.8=-\frac{v}{8}\) so

-9.8(8) = -v and

v = 78.4 m/s downward (the word "downward" takes place of the negative sign)