how are u guys define unification of germany​

Answer:

a sample of water boils and releases gas.

Answer:

If there are more molecules present, or there's a bigger surface area on which the reaction happens, there will be more successful collisions and the reaction will go faster. Also, if the temperature is higher, more molecules will have enough energy to react, and the reaction will be faster.

The x component of the force would be 271.89 N and The y component of the force would be 126.78 N

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The mathematical expression for Newton's second law is as follows

F = ma

As given in the problem Jake pulls a couch of mass 38 kg across his apartment. He pull on the couch at an angle of 25° with a force of 300 N.

The x component of the force would be

Fx = F cos 25°

    = 271.89 N

The y component of the force would be

Fy = F sin25°

    = 126.78 N

Thus, The x component of the force would be 271.89 N and The y component of the force would be 126.78 N

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Answer:

i) 2700

ii) 385.7

Explanation:

i) 20% × x = 540

x = 540 × 100/20 = 2700

ii) Average daily commission = 2700/7 = 385.7

The electron is a subatomic particle whose electric charge is poor one fundamental price. Electrons belong to the first generation of the lepton particle own family, and are usually concept to be fundamental particles because they have no recognized additives or substructure.

2. The charge on the comb is   -1.6 x 10^-16 C

charge on an electron = -1.6 x 10^-19 C

Number of electron = 1000

total charge =  -1.6 x 10^-19 C x 1000

                   =  -1.6 x 10^-16 C

3. electrons are found in the charged particle is  3000 electrons.

total charge = 4.8 x 10^-16 C

q = ne

n = q/e

n = 4.8 x 10^-16 C / -1.6 x 10^-19 C

  = 3000 electrons

4. q = ne

 n =  5.0 x 10^21 electrons.

q = 5.0 x 10^21 × 1.6 x 10^-19 C

   = 8 x 1000 C

Since 6.25 x 10^18 electrons carry 1C of charge

  5.0 x 10^21 electrons. carry = 1 C

1 electron = 1 C / 6.25 x 10^18

5.0 x 10^21 = (1 C / 6.25 x 10^18)

Total charge =  (1 C / 6.25 x 10^18) x 5.0 x 10^21

                      = 800 C

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Answer:

Probably 1600N

Explanation:

Both forces will cancel each other out and the raft will stay afloat

Complete question is;

You are looking at a module specification

sheet that has the table of information

below. What is the maximum power of this

module in Watts to the nearest whole Watt?

Value

Polycrystalline si

Characteristic

Cell Type

Cell

Configuration

Voc

160 in series

137.2 V

V_imp: 29.3 V

Ilsc: 8.60 A

I_Imp: 8.02 A

Dimensions (mm/in): 1000 x 1600 x 50 mm / 39.4" x 63" x 2"

Weight: 10 kg / 22 lbs​

Answer:

P ≈ 235 Watts

Explanation:

Formula for power is;

P = IV

Now, for maximum power, we will make use of I_imp and V_imp given

Thus, P = I_imp × V_imp

We are given;

V_imp: 29.3 V

I_Imp: 8.02 A

Thus: P = 8.02 × 29.3 = 234.986 Watts

We are to approximate to the nearest whole watt.

Thus: P ≈ 235 Watts

Inversely proportional to the frequency's square root.

Voltage noise spectral density, sometimes known as nV/, is a measurement of RMS noise voltage per square root hertz. The units of the power spectral density are W/Hz. An infinite addition of sine waves at various frequencies can be compared to a random noise signal.

The product of the Boltzmann constant, electric resistance, frequency bandwidth, and temperature equals two times the square root of the Johnson-Nyquist noise voltage.

It is simple to define the noise spectral density of an ADC as the full-scale signal power of an ADC less the noise power, distributed over 1 Hz bandwidth unit increments. The spectral noise density of an ADC remains constant regardless of the FFT sampling depth. It merely disperses the noise over several unit bandwidths of frequency.

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Answer:

The angle between vectors A and B is 116.6°.

Explanation:

Geometric Addition of Vectors

The geometric construction of the situation stated in the question is shown in the image below.

The angle between vectors A and B is the sum of 90° and θ.

Angle θ can be found by working on the right triangle of side lengths 8 and 4, and angle θ.

We use the tangent ratio:

\(\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}\)

The opposite leg to θ is 4 and the adjacent leg is 8, thus:

\(\displaystyle \tan\theta=\frac{4}{8}=\frac{1}{2}\)

Calculating the angle:

\(\displaystyle \theta=\arctan\left(\frac{1}{2}\right)\)

\(\theta\approx 26.6^\circ\)

Thus the required angle is 90° + 26.6° = 116.6°

The angle between vectors A and B is 116.6°.

The skater's final angular velocity is approximately 9.86 rad/s.

The skater's final angular velocity can be calculated using the principle of conservation of angular momentum. The equation for angular momentum is given by:

L = Iω

where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

Initially, the skater has an angular momentum of:

L_initial = I_initial * ω_initial

Substituting the given values:

L_initial = 2.12 kg m² * 3.25 rad/s

The skater's final angular momentum remains the same, as angular momentum is conserved:

L_final = L_initial

The final moment of inertia is given as 0.699 kg m². Therefore, the final angular velocity can be calculated as:

L_final = I_final * ω_final

0.699 kg m² * ω_final = 2.12 kg m² * 3.25 rad/s

Solving for ω_final:

ω_final = (2.12 kg m² * 3.25 rad/s) / 0.699 kg m²

Hence, the skater's final angular velocity is approximately 9.86 rad/s.

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The two correct answers are:

The hydrosphere is described as the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite.

Increasing levels of carbon dioxide in the atmosphere leads to global warming, which in turn affects the hydrosphere in various ways.

One of the impacts is that changing climate patterns lead to changes in precipitation patterns, resulting in alterations in the amount and timing of rainfall and snowfall.

Another impact is the warming of the ocean waters due to the absorption of excess heat from the atmosphere. Warmer ocean water can lead to a variety of negative impacts on marine ecosystems, including coral bleaching, altered patterns of marine life migration, and the potential extinction of some marine species.

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The work done, by the force of friction on the box as the box moves a distance is 13.12 J.

The work done by force of friction is calculated from the product of force of friction and distance through which the object travelled and it is given as;

W = Fₙd

where;

W = μmg x d

Where;

W = 0.431 x 6.25 x 9.8 x 0.497

W = 13.12 J

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Explanation:

6) newton

7) f =ma = 15*15 = 225N

8) a= 100/20 = 5ms^-2

Answer:

6 newton

7) f =ma = 15*15 = 225N

8) a= 100/20 = 5ms^-2

Explanation:

this is right pls mark as brainliest

The number of electrons that must be removed from object A and placed on object B is 1.24 * \(10^{19}\)

We know that,

E = k \(q_{1}\) \(q_{2}\) / r²

where,

E = Electrostatic force

k = Coulomb's constant

\(q_{1}\), \(q_{2}\) = Point charges

r = Distance between two charges

Given that,

\(q_{1}\) = 2 + ne C

\(q_{2}\) = - 2 - ne C

r = 3 cm

k = 9 * \(10^{9}\) N m² / C²

E = - 68 N ( Since it is attractive )

- 68 = 9 * \(10^{9}\) ( 2 - ne ) ( - 2 + ne ) / ( 3 * \(10^{-2}\) )²

68 * \(10^{-4}\) / 3 * \(10^{9}\) = ( 2 - ne )²

2.27 * \(10^{-12}\) = ( 2 - ne )²

1.5 * \(10^{-6}\) = 2 - ne

ne = 1.98

n = 1.98 / 1.6 * \(10^{-19}\) = 1.24 * \(10^{19}\)

The given problem is an electrostatic attractive force because the two point charges are unlike charges. If the charges are like, then the electrostatic force will be repulsive.

Therefore, the number of electrons that must be removed from object A and placed on object B is 1.24 * \(10^{19}\)

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The number of people you will stack to reach the top of the CN Tower (553 m) is 316 people

We'll begin by converting 175 cm to m. This can be obtained as illustrated below:

100 cm = 1 m

Therefore,

175 cm = (175 cm × 1 m) / 100 cm

175 cm = 1.75 m

Thus, 175 cm is equivalent to 1.75 m

The number of people needed to be stacked to get to the top of the CN tower can be o btained asfollow:

Number of people needed = Height of tower / height of a person

Number of people needed = 553 / 1.75

Number of people needed = 316 people

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Answer:

125 meters

Explanation:

5s= s*5 so 25*5=125 m

The power needed to boil the water is divided by the element's power output, and the result is multiplied by 100 to get the efficiency of the kettle as a percentage. The answer is 79 %.

We are informed that

Electric kettle power is 1 kW.

Electric kettle voltage is 230 V.

The time it takes the kettle to bring the water to boiling point is 7.5 minutes.

1 kg = mass of water.

Heat generated equals V x I x t + Pt.

generated heat = 1000 W x 7.5 x 60

Heat absorbed equals (100 - 15) x 1 x 4200 = 4200 x 85

Efficiency is determined by multiplying the heat produced by the heat absorbed by 100.

= 4.2 x 85 x 10^3 / 4.5 x 10^5 x 100

= 357 / 4.5 = 79 %

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The velocity of the object the moment it reaches the ground is 160 feet per s.

what is  velocity?

constant a=32 feet/s

Now as we know that the Derivative of the position is Velocity.

Constants: 0=400-16t2

400=16t2

25=t2

t=5s

ds/Dt=v(t)=0-32t

dv/Dt=a(t)=-32 (gravity)

v(t) = -32(5s) = -160 feet/s Negative sign merely indicates a direction.

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Explanation:

First, the liquid on the bottom of the pot closest to the heat source starts to get hot; as it does, it rises. The rising hot water is replaced by the cooler, more dense water molecules. The water molecules in your pot continually exchange in this way, thanks to gravity, eventually warming the entire pot of liquid.

As the board is raised by an angle θ, the block will be held in place by 3 forces:

• its weight, pointing downward (magnitude w )

• the normal force of the board pushing up on the block, pointing in the direction perpendicular to the board (mag. n)

• static friction, pointing in the direction parallel to the board, opposite the direction the block would slip (mag. f )

Decompose the vectors into components that are parallel and perpendicular to the board (taking the direction of n to be the positive direction perpendicular to the board, and the direction of f to be the negative directoin parallel to it), so that by Newton's second law, we have

• net parallel force:

∑ F = w (//) + f

∑ F = m g sin(θ) - µ n = 0

where µ = 0.45 is the coefficient of static friction, g = 9.80 m/s² is the mag. of the acceleration due to gravity, and m = 15.0 kg is the mass of the block.

• net perpendicular force:

∑ F = n + w (⟂)

∑ F = n - m g cos(θ) = 0

Solve for n in the equation for net perpendicular force:

n = m g cos(θ)

Substitute this into the equation for net parallel force:

m g sin(θ) - 0.45 m g cos(θ) = 0

Solve for θ :

sin(θ) - 0.45 cos(θ) = 0

sin(θ) = 0.45 cos(θ)

tan(θ) = 0.45

θ = tan⁻¹(0.45)

θ ≈ 24.2°

So the maximum angle the board can be lifted before the block starts to slide is about 24.2°, since the coefficient of static friction µ is such that

f = µ n

where f is the maximum magnitude of the static friction force.

Based on the given diagram, we can only reasonably conclude statement c, that the upper plate is positive and the lower plate is negative

What is Electric Field?

Electric field is a concept used in physics to describe the influence that an electric charge exerts on other charges in its vicinity. It is defined as the force experienced by a positive test charge placed in the vicinity of an electric charge, divided by the magnitude of the test charge

The upper plate is positive and the lower plate is negative: This statement is a common convention for charged parallel metal plates in a capacitor. The positive plate is usually considered as the plate with electric field lines originating from it (in this case, the upper plate), and the negative plate is usually considered as the plate with electric field lines terminating on it (in this case, the lower plate). So, this statement is likely to be true based on convention.

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Answer:

A.

Explanation:

Amplitude measures how much a wave rises or falls. This is illustrated by A.

In the diagram, the amplitude of the wave is shown by A.

There are various definitions of amplitude, which are all functions of the magnitude of the differences between the variable's extreme values.

The amplitude of a variable is simply a measure of change relative to its central position. In contrast, magnitude is a measure of the distance or quantity of a variable irrespective of its direction.

Amplitude is a property that is unique to waves and oscillations.

Therefore, in the diagram, the amplitude of a wave is shown by A.

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Answer:

llogical or bizarre ideas or fantasies.

Explanation:

If the impulse is strong enough and lasts for a sufficient amount of time, the go-kart will eventually come to a stop.

Option A is correct.

impulse is described as the integral of a force, F, over the time interval, t, for which it acts. Since force is a vector quantity, impulse is also a vector quantity.

If the force is insufficient to stop the go-kart entirely, it will slow down but continue to move. The force and duration of the impulse, along with the mass and speed of the go-kart, will all affect how much deceleration occurs.

Given that momentum plus impulse equals zero, the go-kart's change in momentum as a result of the impulse will be equal in amount but will move in the opposite direction of its original momentum.

As a result, the go-kart's final momentum will be zero, suggesting that it has either stopped or is travelling very slowly.

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Answer:

A region of condensing matter will begin to heat up and start to glow forming Protostars.

Answer:

I would say B but I could be wrong

Explanation:

Answer: one is thermal energy

Explanation: because thermal energy is the temperature of the charcoal

from Wein's law

\( \frac{k}{ \lambda_{max} } = T \\ \lambda_{max} = \frac{k}{T} \\ \lambda_{max} = \frac{3.898 \times {10}^{ - 3} }{4300} \\ = 9.065 \times {10}^{ - 7} \)

The peak wavelength of light coming from a star with a temperature of 4300 K is approximately 6.74 x \(10^-7\) meters or 674 nanometers.

To determine the peak wavelength of light emitted by a star with a temperature of 4300 K, we can use Wien's displacement law.

Wien's displacement law states that the wavelength at which the intensity of radiation emitted by a black body is maximum (peak wavelength) is inversely proportional to the temperature of the object. The equation is given as:

λmax = b / T

Where:

λmax is the peak wavelength,

b is Wien's displacement constant (approximately 2.898 x \(10^-3\) m·K),

T is the temperature of the object in Kelvin.

Let's substitute the given temperature into the formula:

λmax = (2.898 x \(10^-3\)  m·K) / 4300 K

Calculating this expression:

λmax ≈ 6.74 x \(10^-7\)  m

Therefore, the peak wavelength of light coming from a star with a temperature of 4300 K is approximately 6.74 x \(10^-7\)  meters or 674 nanometers.

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