A stretched string is supported by two bridges a distance L apart. You are driving the string with an inductive coil and find the lowest resonance frequency at 100 Hz. Now you move the bridges a little so that the distance between them is 10% larger than before. The new resonant frequency:
A. may be larger or smaller; one needs more information to decide.
B. is smaller than it was before.
C. is larger than it was before.
D. is the same as it was before.

Roman numerals in a cation's name signify the oxidation state of the cation. Transition metal cations need Roman numerals in their name since they can have various oxidation states.

When writing a cation's name, the Roman numerals indicate the oxidation state of the cation.

Roman numerals in the cation's name indicate the oxidation state of the cation. When naming transition metal cations, the oxidation number of the ion must be specified since transition metals can form cations with varying oxidation numbers. For example, the iron(II) cation has a +2 oxidation state, while the iron(III) cation has a +3 oxidation state.

Explanation: Cations are positively charged ions that are created when atoms lose one or more electrons. Since they are positively charged, they are written first in the name of a compound when it is written out. When writing the name of a cation, the name of the metal comes first, followed by the oxidation number in parentheses.

For example, Cu2+ is the copper(II) ion, which means it has a +2 oxidation state. Iron can exist as both Fe2+ and Fe3+ ions, so they are named iron(II) and iron(III), respectively.

Conclusion: Roman numerals in a cation's name signify the oxidation state of the cation. Transition metal cations need Roman numerals in their name since they can have various oxidation states.

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Answer:

0.389 meters per second

Explanation:

1. Get your knowns

a. 40 meters per 120 seconds

b. 30 meters per 60 seconds

2. Add

Total distance = 40 meters + 30 meters = 70 meters

Total time = 120 seconds + 60 seconds = 180 seconds

3. Divide

Average velocity = 70 meters / 180 seconds

= 7 meters / 18 seconds

= 0.388... meters per second

When the hair dryer is turned on, it draws in cool air from its back end and passes it over a heating element, which increases the temperature of the air.

Cool air is taken in and is heated using a heating element as described. The heated air is then forced out through the front end of the dryer by a fan. As the warm air blows over the hair, it causes the water molecules in the hair to evaporate, thus drying the hair. The hair dryer also helps to style hair by blowing it in different directions, causing it to move and create volume.

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The speed of water at the point with a radius of 0.150 m is 16.97 m/s while the radius of the pipe at the point where the water speed is 2.90 m/s is 0.0682 m.

a) To find the speed of the water at a point of a circular pipe where the radius is 0.150 m if the water is flowing into this pipe at a steady rate of 1.20 m³/s, we'll use the equation;

Q = A₁V₁ = A₂V₂ Where Q = Flow rate (m³/s)A₁ = Cross-sectional area at one point (m²)V₁ = Velocity of water at one point (m/s)A₂ = Cross-sectional area at a second point (m²)V₂ = Velocity of water at the second point (m/s)At one point in the pipe, the radius is 0.150 m.Therefore, the cross-sectional area, A₁ is given by:

A₁ = πr₁² = π (0.150 m)² = 0.0707 m²Given that the water is flowing into the pipe at a steady rate of 1.20 m³/s, we can write;Q = A₁V₁1.20 m³/s = 0.0707 m² V₁V₁ = 1.20/0.0707V₁ = 16.97 m/s.Therefore, the speed of water at the point with a radius of 0.150 m is 16.97 m/s.

b) To find the radius of the pipe at a point where the water speed is 2.90 m/s, we'll use the same equation as in part (a);Q = A₁V₁ = A₂V₂At a second point in the pipe, the water speed is 2.90 m/s.Given that the water completely fills the pipe, we know that the volume flow rate, Q will remain constant at 1.20 m³/s.So, we have:

Q = A₁V₁ = A₂V₂We know that A₁ = πr₁²So, Q = πr₁²V₁Also, we know that A₂ = πr₂²So, Q = πr₂²V₂Since the volume flow rate is constant, we can equate both equations,πr₁²V₁ = πr₂²V₂Dividing both sides of the equation by π, we have;r₁²V₁ = r₂²V₂But we are interested in finding the radius of the pipe at the second point, r₂.So, we can express r₁ in terms of r₂ using the relationship between the cross-sectional areas;

A₁ = A₂r₁² = (A₂/A₁)²r₂²r₁ = r₂ (A₂/A₁)^(1/2).We know that A₁ = πr₁²We can find A₂ using the fact that the water completely fills the pipe;

A₁V₁ = A₂V₂πr₁²V₁ = A₂V₂π(0.150 m)²(16.97 m/s) = A₂(2.90 m/s)A₂ = π(0.150 m)²(16.97 m/s)/(2.90 m/s)A₂ = 0.0707 m²

So,r₂ = r₁(A₂/A₁)^(1/2)r₂ = 0.150 m × (0.0707 m²/π)/(0.0150 m²)^(1/2)r₂ = 0.0682 m. Therefore, the radius of the pipe at the point where the water speed is 2.90 m/s is 0.0682 m.

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When the soccer player heads the ball, the initial momentum of the ball (which is moving downwards) is given by m₁u₁, where m₁ is the mass of the ball, and u₁ is the velocity of the ball before collision.

The player's momentum is given by m₂u₂,

where m₂ is the mass of the soccer player, and u₂ is the velocity of the soccer player before the collision.

In this case, m₁ = 0.45 kg, u₁ = -25 m/s, m₂ = 60 kg, u₂ = 4 m/s.

Immediately after the collision, the ball rebounds vertically upwards, so its velocity is v₁ = - u₁.

The soccer player will be moving upwards with a velocity of u₂' = u₂ - v₂,

where v₂ is the velocity of the soccer player just after the collision. H

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂.

Substituting the values of the masses and velocities, we get 0.45 × (-25) + 60 × 4 = 0.45 × (-(-25)) + 60 × v₂

⇒ -11.25 + 240 = 11.25 + 60v₂

⇒ v₂ = (240 + 11.25)/60 m/s

= 4.02 m/s(approx).

The contact time between the ball and the soccer player is 20 ms, or 0.02 s.

The average acceleration of the ball is given by a = Δv/Δt,

where Δv is the change in the velocity of the ball, and Δt is the time taken for the change.

Since the ball is initially moving downwards and then rebounds upwards, the change in velocity is twice the initial velocity, i.e., 2u₁.

 a = (2u₁)/Δt = (2 × 25)/0.02 m/s² = 2500 m/s².

the average acceleration of the ball is 2500 m/s².

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Answer:

hmm...

Explanation:

Answer: wave a has the higher ampllitude while wave b has the lower amplitude.

Explanation:

wave a has the amplitude of 4 while wave b has the amplitude of one

The ratio of the heat capacity of a system to its mass is referred to as option b) specific heat.

Specific heat is a measure of the energy required to raise the temperature of a unit mass of a substance by one degree Celsius. This is usually done using a calorimeter, which is a device that measures the heat of a reaction. The units of specific heat are joules per kilogram per degree Celsius (J/kg•°C).

Specific heat is different from other thermodynamic properties such as enthalpy, which is the total heat content of a system, and entropy, which is a measure of the disorder of a system. It is also distinct from molar heat capacity, which is the heat capacity per unit amount of a substance.



The specific heat of a substance is calculated using the equation:

C = q/(m•∆T)

where C is the specific heat, q is the energy required to raise the temperature of the substance, m is the mass of the substance, and ∆T is the change in temperature.

Specific heat can be useful in many applications. For example, it can be used to calculate the energy required to heat or cool a substance, as well as the rate of heat transfer. It is also useful in the design of thermal systems, such as refrigerators and heaters, as it can be used to calculate the amount of energy required to maintain a certain temperature.

Therefore, the correct answer is option b) specific heat.

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Mount Nevado,  Huascarán in Peru has the lowest gravitational acceleration, at 9.7639 m/s2.

What is gravitational acceleration ?

An object in free fall in a vacuum experiences gravitational acceleration. This is the gradual increase in speed brought on solely by the gravitational pull. No matter their masses or compositions, all bodies accelerate at the same rate in a vacuum; the measurement and analysis of these rates is known as gravimetry.

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Answer:

so its 10pm in seattle

Explanation:

Answer:

2.75 × e10

put the decimal in front of the first real number. put e to however many spaces from the original

The diameter of a water molecule is 0.000000000275 m, it can be expressed as 2.75 x \(10^{-10\) m.

A water molecule has a diameter of 0.000000000275 m, which corresponds to 2.75 x \(10^{-10\) m in scientific notation.

Numbers are stated in scientific notation as a coefficient, which is a number between 1 and 10, multiplied by a power of 10. The power of 10 in this situation is -10, and the coefficient is 2.75.

The number is incredibly small since the exponent is negative, which means the decimal point is 10 places to the left.

Extremely big or small numbers are frequently represented more compactly and clearly using scientific notation, which makes it simpler to work with and compare such quantities.

Thus, this can be expressed as 2.75 x \(10^{-10\).

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Answer:

The correct option is;

d. A coil

Explanation:

When a wire, which is an electric conductor is formed into the shape of a coil, and current is allowed to flow through the wire coil, a magnetic field is generated

The magnetic field generated by the electromagnetic coil has direction that consists of flux emanating from one end of the coil and entering the coil from the other end, similar to that of the magnetic field produced by a normal bar magnet.

Answer:

The maximum speed an object can fall in the presence of air resistance

Newton's third law

A coil

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\(answer \\ = 50 \: m / s \\ solution \\ distance \: travelled\: by \: bus = 1.5 \: km \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 1.5 \times 1000 \: m \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 1500 \: m \\ time \: = 30 \: seconds \\ speed = \frac{distance}{time} \\ \: \: \: \: \: \: \: \: \: \: = \frac{1500m}{30s } \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 50 \: m/s \\ hope \: it \: helps\)

Answer:

C. 50 m/s

Explanation:

Given:

Distance = 1.5 km = 1500 m

Time = 30 sec

Required:

Speed = ?

Formula

Speed = Distance / Time

Solution:

Putting the given in the formula

Speed = 1500/30

Speed = 50 m/s

In procedure 1, an object is hung on a knife edge to find the center of gravity. The center of gravity of the object is located directly above the knife edge position found in procedure 1 because this is the point where the weight of the object is evenly distributed.

The center of gravity is the point where the weight of an object can be considered to be concentrated. This point is the point at which the object can be balanced. The center of gravity of an object is located at the point where all the weight of the object is concentrated. This is the point where the weight of the object is evenly distributed. When an object is hung on a knife edge, it is possible to find the center of gravity of the object.

The knife edge is used because it provides a point of support for the object. When the object is hung on the knife edge, the point where the object balances is the center of gravity. This is the point where the weight of the object is evenly distributed, and this is the point that is directly above the knife edge position found in procedure 1.

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Answer:

50 out of 100 (ik its right)

Answer:

57? 17? 7? 77? 37? 47? 87? 97? 27? 67?

Explanation:

id'k

The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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Answer:

9.8 meters per square second

Explanation:

Free Falling Object. the value of g is 9.8 meters per square second on the surface of the earth. The gravitational acceleration g decreases with the square of the distance from the center of the earth. But for many practical problems, we can assume this factor to be a constant.

Explanation:

Let thermal capacity of the vessel be C' J K-1

Heat energy given by hot water = 40 x 4.2 x (60 - 30) = 5040 J

Heat energy taken by cold water = 50 x 4.2 x (30 - 20) = 2100 J

Heat energy taken by vessel = C' x (30 - 20) = 10 C' J

If there is no loss of heat energy,

Heat energy given by hot water = Heat energy taken by cold water and vessel

or 5040 = 2100 + 10 C'

or 10 C' = 2940

or C'= 294 J K-1

Thus, thermal capacity of vessel = 294 J K-1.

The specific process by which the water leaves the cell is called plasmolysis.

Plasmolysis is the process in which the cell loses the water that is present inside it because the environment of the cells produces pressure to build up inside the cell. If a cell is present in a hypertonic solution means that solvent concentration is lower in the surrounding solution, then water comes out of the cell while on the other hand, if a cell is present in a hypotonic solution in which the solvent concentration is higher in the surrounding solution, then water goes inside of the cell. The movement of liquid inside or outside of the cell occurs due to the semi-permeable membrane of the cell.

So we can conclude that the specific process by which the water leaves the cell is called plasmolysis.

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Answer:

because the earth is more consistent and while you use a slinky your hand moving it is not very controlled

Answer:

I1 = 2/5 M1 R^2   for a sphere about its center

I2 = 2/5 M2 (2 R)^2 = 2/5 M2 R^ * 4 = 8/5 M2 R^2

Remember that M2 is greater than M1 by a factor 0f 2^3 = 8

Then I2 exceeds I1 by a factor of 32

The power of the man is approximately 43.87 Watts.

First, let's convert the time taken to run up the hill from minutes to seconds:

t = 15 minutes = 900 seconds

Next, let's calculate the work done by the man to climb the hill:

Work = force x distance

= weight x height

= mgΔh

= (100 kg)(9.87 m/s^2)(40 m)

= 39,480 Joules

Now, let's calculate the power:

Power = Work / Time

= 39,480 J / 900 s

= 43.87 Watts

Therefore,  the power of a man weighing 100kg if he runs to the top of a hill of height 40meters on 15minutes is 43.87 Watts.

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Answer: C, E, and D is incorrect

Explanation:

C is wrong because the arrows are going inside but they should be negative not positive. E is wrong because it should be positive not negative since the arrows are going outward. D is wrong because there are more arrows in the right side instead it is suppose to be on all sideS

The Rock cycle is a model that describes the formation degradation, and regeneration of rocks as a result of sedimentation magma, and metamorphism. All rocks are made of minerals.

Rock circulation is the process by which rocks change continuously between three types igneous sedimentary and metamorphic. The three processes that transform one rock into another are crystallization, metamorphism erosion, and sedimentation. Any rock can be transformed into another rock by undergoing one or more of these processes. This creates a lock cycle.

Rock circulation is a fundamental concept that describes the transition between three rock types metamorphic igneous, and sedimentary rocks. Simply put it is a set of processes that create and transform rock types within the Earth's crust. Rock cycling by definition is the natural process by which sedimentary igneous, and metamorphic rocks are formed, transformed from one type to another, and destroyed.

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The best way to calculate the volume of a log with a serious defect is to calculate the volume of the defect and subtract it from the total volume of the log which is denoted as option C.

This is referred to as the amount of space occupied by any three-dimensional solid which could be a square, rectangle etc.

In a scenario where a defect is present in the log, then it is  best to consider it by first calculating the volume of the defect after which it is then subtracted from the total volume of the log in other to give an accurate result.

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Answer: C. It includes factual information supported by other sources

Explanation:

:) its really obvious tbh w you

gamertag: itzmamas1k

Answer:

Explanation:

its what he or she said i hope!

Answer:

correct statement should be the same speed.

Explanation:

if the car is moving east reads 60 mph and it passes another car with the same speed.

therefore, the magnitudes of their velocities are equal.

and each car's velocity is the negative of the other car vehicle.

so the correct statement should be the same speed.

Answer:

They have different velocities

Explanation:

The cars are passing each other at the same speed, and because velocity is speed with direction they are at different velocities.

Answer:

facts provided or learned about something or someone.