does the force the water exerts against the bottom of the stick change if you shove the stick deeper in the water? try and see! push the stick deeper in the water. what happens when you release it? why?

we can solve this by the formula of frequency,

f⋅λ=c

f = frequency

λ = wavelength

c = speed of Electromagnetic radiation in vacuum

(96.7×10⁶Hz) ⋅λ=3.00×10⁸m/s

λ= 3.1 m

the wavelength is 3.1m

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We need additional information to determine the number of moles of gas (n) and the spring constant (k). Without this information, it is not possible to provide a specific answer

Please provide the missing information, such as the number of moles of gas and the spring constant, so that I can assist you in calculating the heat energy required to expand the cylinder length.Apologies for the confusion earlier. To calculate the heat energy required to expand the cylinder length, we need to know the spring constant (k). Without the spring constant, we cannot determine the work done by the gas accurately.If you provide the spring constant (k) of the spring, I can assist you in calculating the heat energy required.Without the specific value for the spring constant (k), it is not possible to calculate the heat energy required to expand the cylinder length. The spring constant is a crucial parameter in determining the work done by the gas in the process.Please provide the value of the spring constant (k) so that I can assist you in calculating the heat energy required accurately.

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Answer:

25

Explanation:

I just did this

The root-mean-square (rms) voltage (Vrms) of a source is the effective voltage value that corresponds to the average power delivered by the source.

To determine the rms voltage of a source, you need to have the values of the instantaneous voltage over a complete cycle of the AC waveform. By squaring each instantaneous voltage value, calculating their average, and taking the square root of the result, you can find the rms voltage.

For example, if you have a sinusoidal AC voltage waveform with a peak voltage of Vpeak, the rms voltage (Vrms) can be calculated using the following formula:

Vrms = Vpeak / √2

Here, √2 is a constant value derived from the mathematical properties of sinusoidal waveforms.

The rms voltage is essential because it represents the equivalent steady DC voltage that would produce the same power or heating effect in a resistive circuit. It is commonly used to describe the voltage levels of AC power sources, electrical signals, and the voltage requirements of electrical devices.

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Since the force of gravity is at an angle to the velocity, a satellite in a circular orbit suffers a change in speed as a result. The ideal selection is A. In physics, a force is an effect that has the ability to change object.

A mass-containing object's velocity or acceleration can be altered by a force (for example, moving from a condition of rest). Force can also be intuitively described as a push or a pull. All objects with mass or energy are attracted to one another through the fundamental physics interaction of gravity (from the Latin gravitas, "weight"). Gravity is by far the weakest of the four fundamental interactions, with a relative strength of about ten times that of the others.

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Answer:

i guess it will be mass or volume, but not sure

Explanation:

because the blocks volume will be same as the displaced water, then u will check the mass or volume of the water to see what the volume of a object will be.

When we say that the moon is moving eastward among the stars, we are referring to its apparent motion across the night sky relative to the fixed position of the stars.

When we observe the moon in the night sky, we can see that it appears to move across the sky over time. If we were to track its path over several nights, we would notice that it moves in an eastward direction relative to the stars.

This means that the moon appears to be traveling along the same path as the stars, but at a slightly faster pace. This is because the moon is orbiting around the Earth, which is rotating on its axis, causing the stars to appear to move in a circular pattern in the sky.

So when we say that the moon is moving eastward among the stars, we are referring to its apparent motion across the night sky relative to the fixed position of the stars.

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Answer:

b & b

Explanation:

Two stoves were turned off at the same time, and they both started to cool down.

The following equation gives the temperature of the first stove (in degrees Celsius) as a function of time (in minutes).

T = 180-1.55mT=180−1.55mT, equals, 180, minus, 1, point, 55, m

The graph of the temperature of the second stove (in degrees Celsius) as a function of time (in minutes) is shown below.

Which stove started at a higher temperature?

Choose 1 answer:

Choose 1 answer:

(Choice A, Incorrect)

INCORRECT

The first stove

(Choice B, Checked, Correct)

CORRECT (SELECTED)

The second stove

(Choice C, Incorrect)

INCORRECT

The stoves started at the same temperature

Which stove cooled down at a greater rate?

Choose 1 answer:

Choose 1 answer:

(Choice A, Incorrect)

INCORRECT

The first stove

(Choice B, Checked, Correct)

CORRECT (SELECTED)

The second stove

(Choice C, Incorrect)

INCORRECT

The stoves cooled down at the same rate

If you pull yourself to the center of the merry-go-round,  the rotation of the merry go round will decrease.

This is the radial acceleration experienced by a person moving in a circular path as the merry-go-round rotates about its mean position.

a = v²/r

where;

From the formula given above, as the radius of the merry go round increases, the centripetal acceleration of the merry go round decreases.

v = ωr

where;

Thus, when the radius of the circular path decreases, the speed of the merry go round will decrease as well.

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Answer:

35.4 cm

Explanation:

We have that when the level of mercury on either limb is the same, the pressure of the trapped air, P₁ = Atmospheric pressure

Also the initial height of the mercury in the tube = The reading of the barometer = 75.0 cm

The initial length of the air column, l₁ = 6.3 cm

The final length of the air column, l₂ = 4.2 cm (The length is expected to decrease due to compression)

The volume, V = l × A

Where;

A = The cross sectional area of the tube

Therefore, the volume of the air column is directly proportional to the length of the air column

∴ V ∝ l

According to Boyles law, we have;

P₁·V₁ = P₂·V₂

Where;

P₁ = The initial pressure in the air column before more mercury is added

V₁ = The initial volume occupied by the air in the air column

P₂, and V₂ are the final pressure and volume of the air column respectively

Given that V = l·A, we can write;

P₁·l₁·A = P₂·l₂·A

P₂ = P₁·l₁·A/(l₂·A) = P₁·l₁/(l₂) = P₁ × 6.3/4.2 = 1.5·P₁

The pressure in the air column after more mercury is added, P₂ = 1.5 × P₁

P₁ = Atmospheric pressure, therefore;

The pressure in the air column after more mercury is added, P₂ = 1.5 × Atmospheric pressure

Pressure = h·ρ·g

Where;

ρ = The density of the substance

g = The acceleration due to gravity

h = The height of the column of the fluid

Given that the density and the gravitational force, can be taken as constant, we have that the pressure of the fluid is directly proportional to the height of the fluid column

Therefore, when the pressure doubles, the height of the fluid column doubles, and when the factor of increase is 1.5, we have;

The final level of the mercury, h₂ = 1.5·h₁ = 1.5×75 cm = 112.5 cm

The initial length of the closed end of the J tube, \(h_{closed1}\) = 6.3 cm + 75 cm = 81.3 cm

The final length of the mercury in the closed end, \(h_{closed2}\) = 81.3 cm - 4.2 cm = 77.1 cm

The difference in the level of mercury, Δh = h₂ - \(h_{closed2}\)

∴ Δh = 112.5 cm - 77.1 cm = 35.4 cm

The difference in the levels of mercury in the limbs, Δh = 35.4 cm

Answer:

3200

Explanation:

Answer:

D

Explanation:

The possible valid accesses for an array a and vector v, each with 10 elements is given below:Array: a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9]Vector: v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7], v[8], v[9]

The term array is used to define a set of similar data types that are stored in contiguous memory blocks. The index of an array starts at 0, which means the first element of the array is stored at index 0. In the case of arrays, the elements must be of the same data type.The term vector is defined as a dynamic array, which means that the size of the vector can be changed during runtime. Vectors are defined in the same way as arrays, except that they have a dynamic size limit and can be easily resized.

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i. The elasticity at point \( g \) is the measure of responsiveness or sensitivity of a quantity to changes in another variable at point \( g \).

ii. To determine the elasticity at point \( h \), we first need to establish what quantity we are referring to at point \( h \). Once we have identified the relevant quantity, we can then calculate its elasticity by measuring the responsiveness or sensitivity to changes in another variable at point \( h \).

i. To determine the elasticity at point \( g \), we need specific information about the variables and their relationship. Elasticity is typically calculated as the percentage change in one variable divided by the percentage change in another variable.

ii. Without additional information about the specific variables and their relationship at point \( h \), it is difficult to provide a precise answer. The concept of elasticity requires specific context and variables to be defined in order to calculate or describe it accurately.

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Answer:

The vertical distance that the ski jumper fell is 417.45 m.

Explanation:

Given;

initial horizontal velocity of the jumper, \(V_x\) = 26 m/s

horizontal distance of the jumper, dx = 240 m

The time of the motion is given by;

dx = Vₓt

t = dx / Vₓ

t = 240 / 26

t = 9.23 s

The vertical distance traveled by the diver is given by;

\(d_y = V_yt + \frac{1}{2}gt^2\)

initial vertical velocity, \(V_y\), = 0

\(d_y = \frac{1}{2}gt^2\\\\d_y = \frac{1}{2}(9.8)(9.23)^2\\\\d_y = 417.45 \ m\)

Therefore, the vertical distance that the ski jumper fell is 417.45 m.

The side length of the ice cube will be 0.49 m and 1.6072 feet. the volume of a cube is; V= a³

Density is defined as the mass per unit volume. It is an important parameter to understand the fluid and its properties. Its unit is kg/m³.

The mass and density relation is given as

mass = density × volume

Unit conversion;

1 g / cm³ = 1000 kg/m³

1 meter  =

3.28 feet.

The mass and density relation is given as

mass = density × volume

m=ρv

109 = 920 ××(V)

V=0.1184 cubic m

The volume of a cube is;

V= a³

0.1184 =  a³

a =0.49 m

a = 1.6072 feet

Hence, the side length of the ice cube will be 0.49 m and 1.6072 feet

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Answer:

a. 15,000J

b. .76m

Explanation:

KE = (1/2)m*v²

KE = .5*1000kg*30m/s

KE = 15000J

PE = m*g*h

7500J = 1000kg*9.81m/s²*h

7500J = 9810*h

h = .76m

Answer:

B

Explanation:

Nonmetal is better insulator than metals

Answer:

B

Explanation:

Just took the quiz.

Light can be used to measure distance accurately because it travels at a constant speed, which is approximately 300,000 kilometers per second.

This means that if you know the amount of time it takes for light to travel from one point to another, you can accurately calculate the distance between those two points.

For example, if it takes light one second to travel from point A to point B, you know that the distance between those two points is 300,000 kilometers. This is why light is often used in astronomy to measure the distance between celestial objects, as it provides an accurate and reliable method of measurement.

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The calculated value of the heat energy released by the system is 196.16 mJ.

To find Q, we can use the following equation:

Q = m * C * ΔT

where:

First, let's convert the given temperature from °C to K:

Cyn6 = 2100 5/53 degrees C = 2373.24 K

-5°C = 278.15 K

Next, we can use the following equation to calculate C, the specific heat capacity of Cyn6:

λ = Q / (m * ΔT)

Solving for C:

C = λ/ (m * ΔT)

Substituting the given values:

C = (3.9 * 10^6 J/mol) / (238 g/mol * 5.53 K)

C = 2963.21 J/g·K

Finally, we can calculate Q:

Q = m * C * ΔT

Substituting the given values:

Q = (238 g) * (2963.21 J/g·K) * (278.15 K)

Q = 196163613 J

Rewrite as

Q = 196.16 mJ (mega joules)

Therefore, the heat energy released by the system is 196.16 mJ.

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Answer:

answer should be false

Answer:

yes it's communication

4.52m/s is the minimum speed the block has to have to reach the top of the ramp when you want to send a 100 g block to the top of a frictionless ramp. the ramp is inclined at 20° and is 3.0 m long.

Between a surface or substance and something moving along or through it, there is no resistance is termed as frictionless.

Given:

100 g block

inclined at 20°

3.0 m long

for height we use

h=3.0*sin20°=1.026

with the above equation using conservation of energy we can find the speed required:

KE=PE

0.5mv^2=mgh

here mass cancels

0.5v^2=gh

v=\(\sqrt{10*1.026/0.5}\)

v=4.52m/s

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We have a problem about conservation and velocity, we will find that it does affect the speed of the ball, increasing it by 1.7m/s.

There is something called momentum, which we can define as the "quantity of movement", and we can simply write as the product between velocity and mass.

The momentum is conservative, then we have conservation of momentum.

This means that when you run whit the ball in your hands, the momentum of the ball will be equal to your velocity times the mass of the ball, and this must conserve after you throw the ball.

Now with this idea in mind, this means that if you run with a velocity V, and you throw the ball with a velocity V', the velocity of the ball when it leaves your hand will be:

V + V'.

So, if you run with a velocity of 1.7m/s forward and you throw the ball (assuming in the same direction) the speed of the ball will be 1.7m/s larger than if you were to throw it standing still.

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The force on the other charge is also F.

The force between two charged objects is given by Coulomb's law, which states that the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

In this case, the force on the charge Q is given by F = k(Q)(3Q)/d^2, where k is Coulomb's constant. Since the force depends on the product of the charges, the force on the charge with charge 3Q will be the same as the force on the charge with charge Q, i.e., F.

Therefore, the force on the charge 3Q is also F.

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Answer:

D. lucid dreaming

Explanation:

(=^w^=)

I believe the answer for 1) is

PEgrav = mass • g • height

PEgrav = m *• g • h

Answer: D: Chloroplasts

Explanation:

Answer: d

Explanation:

The final kinetic energy of the box is 12 Joules.

To calculate the work done on the box, we can use the formula:

Work = force x distance x cos(theta)

where theta is the angle between the force and the direction of motion. In this case, the force is 4N to the right and the displacement is also to the right, so theta is 0 degrees and cos(theta) is 1. Therefore:

Work = 4N x 3m x 1
Work = 12 Joules

So, the work done on the box is 12 Joules.

To find the final kinetic energy of the box, we can use the formula:

Kinetic energy = 0.5 x mass x velocity^2

We know that the mass of the box is 1.5kg and the initial velocity is 3m/s in the opposite direction. When the force is applied to the right, the box starts moving to the right and gains speed. We don't know the final velocity, but we can use the fact that the box ends up 3 meters to the right of where it started. If we assume that the force was applied over this entire distance, we can use the work-energy principle:

Work done by force = change in kinetic energy

We already calculated that the work done by the force is 12 Joules. We can assume that this work is used to increase the kinetic energy of the box. So:

12 Joules = final kinetic energy - initial kinetic energy

The initial kinetic energy is 0, since the box starts from rest. Solving for the final kinetic energy:

final kinetic energy = 12 Joules

So, the final kinetic energy of the box is 12 Joules.

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Uniform circular motion is a motion that is uniform in terms of speed and circular in terms of its path.

Uniform means constant speed and its path is circular.

Thus, the statement is true.

When an engineering team reaches the stage of iterating to improve the solution in the engineering design process, there are various activities that the team might be doing. One of the most crucial activities at this stage of the design process is testing. Here are a few things that an engineering team might do to test and improve the solution:

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