Which of the following is the definition of Specific Heat? Which of the following is the definition of Specific Heat? The movement of thermal energy from a warmer object to a colder one. The average kinetic energy of the participles in a sample. The amount of energy needed to raise the temperature of 1 gram of a substance 1 degree Celsius.

Answer:

amu is atomic mass unit

All of elements hydrogen is the lightest.

Hydrogen is taken as a basic unit so it happened 1amu

So 1 amu must be hydrogen mass

If I am wrong,Pls tell me the true answer....

Answer:

\(4.5 *10^{3}\ kgm/s^{2}\)

Explanation:

Given:

\(Mass= 1.00 * 10^{3} \ kilograms,\\Acceleration =4.5\ meters/second^{2}\)

As we know that

Force=Mass * Acceleration

Putting the value of mass and Acceleration  we get ,

\(Force\ = \ 1.00 * 10^{3} * 4.5\ m/s^{2}\)

\(Force\ =4.5 * \ 10^{3} \ kgm/s^{2}\)

Therefore Net force is :\(4.5 *10^{3}\ kgm/s^{2}\)

Answer:

See image

Explanation:

Plato

The interaction between a helium-4 nucleus and a proton to create lithium-5 is a fusion reaction. This occurs because the two particles have enough energy to overcome their mutual electrostatic repulsion and get close enough to each other for the strong nuclear force to bind them together.

The resulting nucleus, lithium-5, is unstable and will eventually decay back into a helium-4 nucleus and a proton.
Similarly, when a helium-4 nucleus and a neutron interact, they can combine to create a helium-5 nucleus. However, this nucleus is also unstable and will quickly decay back into a helium-4 nucleus and a neutron. This type of reaction is important in nuclear physics and is used in various applications such as nuclear power and weapons. Overall, the interaction between protons and nuclei, whether it be through fusion or decay reactions, is essential in understanding the behavior of matter on the atomic and subatomic level. The study of these processes has led to advancements in fields such as nuclear physics and astrophysics.

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Cantilever beam capacitance at time t, expressed as C= U's rate of change is therefore inversely proportional to x 2.

Date Updated: 27 June 2022. (00 : 00) Solution: A capacitor's capacitance is determined by dividing the amount of charge on either of its conductor plates by the potential difference between its conductors.

QpropV or C=(Q)/(V). The coulomb per volt and farad is the SI unit for capacitance (F).

The fundamental equation for capacitors is charge (= capacitance x voltage, or Q = C x V. We gauge capacitance by series or in parallel, which is the capacity that holds one coulomb (specified as the charge delivered by one ampere inside one minute) of charge per one farad.

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The acceleration with which an object falls through a fluid decreases as the speed of the object increases under gravity, to the point where the speed becomes constant, which is known as the terminal speed of the object

The unknown parameters are the mass of the feather, the density of the air, the feather's projected area and the coefficient of drag

The reason the above selected parameters are the correct unknowns is as follows;

The known parameter;

The speed of the feather the student drops off the building's top = 1.5 m/s

The required parameter;

The unknown parameters

Method;

Determine the terminal velocity parameters of the feather

The terminal velocity, \(\mathbf{V_t}\), of an item is the maximum steady speed the item reaches as it falls through a fluid. The terminal velocity of the feather is given by the following equation

\(Terminal \ velocity, V_t = \mathbf{\sqrt{\dfrac{2 \cdot m \cdot g}{\rho \cdot A \cdot C_d} }}\)

Where;

\(\mathbf{V_t}\) = Terminal velocity = The constant speed of the feather

m = Mass of the feather

g = Gravitational acceleration

ρ = Air density

A = The feather's projected area

\(C_d\) = Drag coefficient

The average speed of the feather = 1.5 m/s = The feathers typical or most common speed = The terminal velocity of the feather, \(\mathbf{V_t}\);

Plugging in \(\mathbf{V_t}\) = 1.5 m/s gives;

\(V_t = 1.5 \ m/s = \mathbf{\sqrt{\dfrac{2 \cdot m \cdot g}{\rho \cdot A \cdot C_d} }}\)

Therefore, the unknown parameters with regard to the feather falling are the parameters that are to be specified, including;

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Therefore:

Answer:

1600W

Answer:

Most of UV radiation is stopped by glass & this is why you will not get sunburns behind a glass. The glass simply filters out the UV radiation that is responsible for the sunburns & protect your skins from these energetic & somewhat harmful radiation

Explanation:

Answer:

30 cm

Explanation:

0.06 or  \(\frac{1}{15}\)

The lever has two “arms”:

The load arm is the portion of the lever directly connected to the load.

The effort arm is the portion of the lever to which we apply the effort, or input force.

The formula of the mechanical advantage(MA) of a lever is given as

MA = load/effort.

Given,

load = 2kg , effort = 30cm

MA = \(\frac{2}{30}\) = \(\frac{1}{15}\)

MA  = 0.06 cm

Therefore,

A 2-kg mass placed 30-cm to the left of the fulcrum is balanced by a 2-kg mass placed  0.06 cm to the right of the fulcrum.

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The distance your vehicle travels from the time the eyes see a hazard to the time the brain knows it's a hazard is called perception distance.

Distance perception refers to a process in which a viewer perceives an interval between two points in space. Perception distance is the distance a vehicle travels from the moment you see a hazard until your brain recognizes it. For an alert driver, this is about 3/4 of a second. The velocity of your car affects the distance needed to stop it. The stopping distance is persistent by three factors: perception distance, reaction distance, and braking distance. Perception time is how long it endures to recognize a condition and comprehend that you require to stop.

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The ratio v1/v2 of the speed of the comet at position 1 to the speed at position 2 will be the ratio of the angular velocity.

Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices.

It should be noted that the tangential speed can alternatively be represented as;

\(\rm v_t= r\frac{d\theta}{dt}\)

where,

θ  is the comet's position angle with respect to some given direction.

The amount dθ/dt is known as angular speed

The ratio v1/v2 of the speed of the comet at position 1 to the speed at position 2 IS;

\(\rm \frac{v_1}{v_2} = \frac{\frac{d \theta_1}{dt_1} }{\frac{d \theta_2}{dt_2} } \\\\\ \frac{v_1}{v_2} =\frac{\omega_1}{\omega_2}\)

Hence,the ratio v1/v2 of the speed of the comet at position 1 to the speed at position 2 will be the ratio of the angular velocity.

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Answer:

The more the number of batteries and coils, the more the electromagnetism.

Explanation:

An electromagnet is a structure formed by passing electricity through a good conductor. Due to the 'Magnetic Effect Of Electric Current', the object functions as an electromagnet, that is, by attracting magnetic objects to it.

This intensity of electromagnetism is greatly dependent on the Electric flow or Current as well as the Number of coils on the electromagnet.

By increasing the number of coils in the electromagnet, you actually increase the electric flow per area or the Magnetic Induction, helping to broaden its magnetic field.

The more batteries you connect to a circuit, the more will be its voltage. Similarly, the more batteries you connect to an electromagnet, the greater will be its strength, due an increased flow of electrons.

The question is to calculate the time of flight of a projectile of a plane on surface of Mars.

The projectile is an object which is launched at angle θ with the horizontal.

The projectile is launched with an initial velocity "u"

The path/trajectory of projectile is a parabola.

The maximum horizontal distance between the point of launching and the point of landing is defined as the range of projectile 'R'.

The maximum time taken by the projectile to be in air or to travel the complete trajectory is defined as the time of flight 'T'.

Both the time of flight and the range depend on the initial velocity and the angle of projection.

Also the two parameters depend on acceleration due to gravity 'g'.

It is mentioned that projectile has same maximum horizontal distance on the earth and Mars.

We have to calculate the time of flight on Mars.

The formula of time of flight T = 2 u sinθ / g

On the earth, g = 9.8 m/s²

The value of acceleration due to gravity on the surface of Mars =

1/3* acceleration due to gravity on the Earth.

Let g' is equal to acceleration due to gravity on Mars.

Then, g = g/3

The time of flight of projectile on the surface of mars T' = 2u sinθ/g

T' = 2u sinθ / (g/3)

T' = (2u sinθ*3)/g

T' = 6u sinθ / g

Therefore, the time of flight of projectile on mars is 6u sinθ / g.

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ΣF = F1+F2+F3+F4 is equal to the total force acting on an object.  ΣF = F1 + F2 + F3 + F4 is equal to the sum of the individual forces F1, F2, F3, and F4.

ΣF is the symbol for the net force, which is the total force acting on an object. F1, F2, F3, and F4 are individual forces acting on the object. When we add them together using the equation ΣF = F1+F2+F3+F4, we get the net force acting on the object.

In this equation, ΣF represents the net force acting on an object, which is the vector sum of all the individual forces (F1, F2, F3, F4) acting on that object. To calculate ΣF, you simply add the magnitudes and directions of each individual force (F1, F2, F3, F4) together.

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Answer:

longitudinal

Explanation:

Answer:

A..0,8

Explanation:

1,9>0,8>0,75

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A region of a fluid flow near a solid surface called the hydrodynamic boundary layer is where the flow patterns are directly affected by viscous drag from the surface wall. (for more detail scroll down)

Hydrodynamics can shed light on the potential water movement patterns through a dam. Engineering frequently uses hydrodynamics. Some studies concentrate mainly on the flow over and through pipes.

A region of a fluid flow called the Thermal Boundary Layer is located close to a solid surface and is where the fluid temperatures are immediately affected by heating or cooling from the surface wall.In the idea of heat transfer, there is a thermal boundary layer. Thermal barrier layers have different temperatures in them.Although comparable characteristics between the two boundary layers may be anticipated, they do not typically coincide.  Temperature changes can be seen well outside the dynamic boundary layer and liquid metals have a tendency to conduct heat from the wall readily.  Outside of the thermal layer, other materials frequently exhibit velocity variations as well.  For the formation of a hydrodynamic boundary layer, a thermal boundary layer that controls the thermodynamic interaction of heat transmission is required.

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We can use Ohm's law to calculate the effective resistance of the car's starter motor. The effective resistance of the car's starter motor in this situation is 0.054 ohms.

To solve this problem, we use the balanced chemical equation between HI and KOH, which is: HI(aq) + KOH(aq) → KI(aq) + H₂O(l)

From this equation, we can see that one mole of HI reacts with one mole of KOH to produce one mole of KI and one mole of water. Therefore, we can use the following equation to calculate the number of moles of HI needed to react with the given amount of KOH: moles of HI = (volume of KOH in L) x (molarity of KOH) x (1 mole of HI / 1 mole of KOH)

Plugging in the given values, we get: moles of HI = (15.00 mL) x (0.217 mol/L) x (1 mol HI / 1 mol KOH) x (1 L / 1000 mL) = 0.003255 mol HI. Now, we can use the molarity of HI and the number of moles of HI to calculate the volume of HI needed: volume of HI = (moles of HI) / (molarity of HI)

Plugging in the given molarity and the calculated number of moles, we get: volume of HI = (0.003255 mol) / (0.550 mol/L) x (1000 mL / 1 L) = 1.79 mL of 0.550 M HI(aq).

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The relationship between mass and kinetic energy is K.E ∝ m and K.E ∝ v².

The kinetic energy of an object exists as the energy that it maintains due to its motion. It is defined as the work required to accelerate a body of a disseminated mass from rest to its stated velocity. Having acquired this energy during its acceleration, the body preserves this kinetic energy unless its speed changes.

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Answer:

acceleration = - 150 m/s^2

distance = 9 miles.

Explanation:

initial speed, u = 60 mph

time, t = 12minutes = 0.2 hour

final speed, v = 30 mph

Let the acceleration is a and the distance is s.

By the first equation of motion

v = u + at

30 = 60 + a x 0.2

a = - 150 m/s^2

Let the distance is s.

Use third equation of motion is

\(v^2 = u^2 + 2 a s \\\\30^2 = 60^2 + 2 \times 150\times s\\\\s = 9 miles\)

The amount of matter a body's mass is the volume of matter abody's mass. Weight is the gravitational force that pulls on the body.

The relationship between mass and weight: Mass is a measure of inertia, whereas weight is a measure of force.

Both of these names are frequently used in the same sentence. In order to determine how much matter a body is made up of, its mass is used as mode of measurement.

The acceleration which is caused by gravity on any mass is measured in terms of weight.

Mass is a measure of the quantity of matter in a material, whereas weight measures how the force of gravity acts upon a mass.

In order to determine how much matter a body contains, its mass is used.

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The direction of the electric field at a point directly below a negative charge, Q, is UP.

An electric field is a physical field that surrounds electrically charged particles and acts as an attractor or repellent to all other charged particles in the vicinity. An electric field is produced when a negative charge, Q, is put in space. Any other charged item placed within electric field will experience a force since it is a vector field. A positive test charge would migrate in the direction of the electric field at any given location in space if it were to be deposited there.

If a point lies exactly beneath a negative charge, Q, then a positive test charge put at this location would experience an attractive force from the negative charge and would subsequently migrate away from the charge in the direction of attractive force. Since the negative charge is located on a surface, the electric field at this location is perpendicular to that surface and facing upward.

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The decibel level that will be recorded by a table of 100 library patrons each whispering at 30 decibels is 50 decibels.

From the information, the relative intensity is 100. This can be illustrated as 10². Therefore, t = 2. Now the logarithm of the relative intensity is increased by 2 units.

The decibel will be:

= 10 × 2

= 20 units.

Therefore, the decibel level that will be recorded by a table of 100 library patrons will be:

= 20 + 30

= 50 decibels.

Therefore, the decibels level is 50 decibels.

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Answer:

that answer is

b. 1/4,000

Answer: When ecosystems collapse, they rapidly lose their structure and function, with dramatic changes to their size or extent, or the species that comprise them. These losses tend to homogenize and simplify the ecosystem – fewer species, fewer habitats, and fewer connections between the two. This is why when an ecosystem failure is fatal, it's unable to recover

Answer: The correct statement is D (the sodium azide breaks down into sodium and nitrogen gas).

Explanation:

A chemical change is an irreversible chemical reaction in which new substances are usually formed. It is also defined as chemical decomposition of a substance leading formation of two or more other substances. A typical example is in the break down or decomposition of sodium azide into sodium metal and nitrogen gas. This is seen in the chemical balanced equation below:

2 NaN3 --> 2 Na + 3 N2

Sodium azide ( also called Sodium trinitride) is a chemical compound that is in built into automobile air bags which upon collision is being triggered to decompose. This leads to the generation of sodium and nitrogen gas that fills the air bag. This aid ls in reducing the impact of the collision and absorbs the forward-moving energy of the occupant.

Answer:

The answer is D Im doing the Exam noe

Explanation:

Hope this help :)

Red Riot out

The height of the mercury column is 0.00416 m. A manometer is an instrument that uses fluid columns to measure pressure or pressure differences. It is the most accurate way to measure gauge pressure. The most common type of manometer is the mercury manometer. It is used to measure low-pressure differences in liquids and gases.

In this problem, we are given a multifluid manometer with water and mercury. We are asked to determine the height h of mercury in the manometer. We are also given that the oil (aceite) has a relative density of 0.8, and the density of water (agua) is 1000 kg/m3.

The pressure difference between the two sides of the manometer is given by the difference in the heights of the two columns of fluid. Let h1 be the height of the water column, and h2 be the height of the mercury column.

We know that the pressure at the bottom of the manometer is the same on both sides. Therefore, we can write:

ρwater * g * h1 = ρmercury * g * h2 + ρoil * g * h3

where ρwater is the density of water, ρmercury is the density of mercury, ρoil is the density of oil, and h3 is the height of the oil column.

Since the oil has a relative density of 0.8, its density is:

ρoil = 0.8 * ρwater = 0.8 * 1000 kg/m3 = 800 kg/m3

Substituting this value into the equation, we get:

1000 * 9.8 * 0.25 = 13600 * 9.8 * h2 + 800 * 9.8 * 0.15

Solving for h2, we get:

h2 = (1000 * 9.8 * 0.25 - 800 * 9.8 * 0.15) / (13600 * 9.8)

h2 = 0.00416 m

Therefore, the height of the mercury column is 0.00416 m.

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Answer:

1. The weight of the column of water above

2. Due to Gravity

(I would say there are two answers for this question)

Explanation:

1.

The pressure in a liquid is due to the weight of the column of water above. Since the particles in a liquid are tightly packed, this pressure acts in all directions. For example, the pressure acting on a dam at the bottom of a reservoir is greater than the pressure acting near the top.

2.

Fluid pressure can be caused by gravity, acceleration, or forces in a closed container. Since a fluid has no definite shape, its pressure applies in all directions. Fluid pressure can also be amplified through hydraulic mechanisms and changes with the velocity of the fluid.

Answer:

25 cm³

Explanation:

In the conversion of units, we know that are one cubic centimeters (cm³) in a milliliter (mL) .

1 milliliter = 1 cubic centimeter

25 milliliters = 25 cubic centimeters

Therefore, a volume of 25 milliliters is the same as a volume of 25 cubic centimeters.

This ultimately implies that, the volume of an object in milliliters is equivalent to its volume in cubic centimeters.

The mass of the measuring stick if it is balanced by a support force at the 0.25 m mark is 0.75 kg.The mass of the measuring stick can be found using the principles of torque.

Given that a 1.0 kg rock is suspended by a massless string from one end of a 1 m measuring stick, and is balanced by a support force at the 0.25 m mark. Thus, taking clockwise as the negative direction of torque and counterclockwise as the positive direction, the torques at the 0.25 m mark are:T clockwise = weight of the rock x distance from support forceT clockwise = (1.0 kg)(9.8 m/s²)(0.75 m) = 7.35 NmT counterclockwise = weight of the measuring stick x distance from support forceT counterclockwise = (mass of measuring stick)(9.8 m/s²)(0.25 m) = 2.45 NmFor balance, T clockwise = T counterclockwise. Substituting values,7.35 Nm = 2.45 Nm(mass of measuring stick) = (7.35 Nm)/(2.45 Nm) = 3 kg.

Therefore, the mass of the measuring stick is 3 kg.Subtracting the weight of the rock, the mass of the measuring stick is:mass of measuring stick = 3 kg - 1 kg = 2 kgSo, the mass of the measuring stick if it is balanced by a support force at the 0.25 m mark is 0.75 kg.

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