A piece of iron wire has a resistance of 30. What will be the resistance of aluminum wire of one-fourth the length and one third the diameter of iron wire. It the specific resistance of aluminum is 30 times that of silver. [Ans: 202.5.02] ​

The displacement is 56.54 m in size.

The displacement is moving in the direction of the line that connects the two vectors.

For instance, if an object shifts from location A to position B, its position changes. Displacement is the term used to describe this shift in an object's position.

The line that connects the beginning and final positions of the vectors is always the resultant displacement.

Formula yields the resultant vector.

AB^2 = BC^2 + 2ABBC Cos∅

the equations' values are substituted,

AC^2 = 35^2 + 15^2 x 35 15 x Cos 25' = 56.54

Consequently, the displacement's size is 56.54 m.

The displacement is moving in the direction of the line that connects the two vectors.

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Answer:

Hello, I believe it would have a negative charge considering protons have a positive charge while elctrons have a negative charge

Explanation:

The average velocity of the 150 kg cart on the 75-meter roller coaster track is approximately 0.42 meters per second.

To find the average velocity of the cart, we need to use the formula:

Average velocity = Total displacement / Total time

In this case, the total displacement is 75 meters (the length of the track) and the total time is 3 minutes, which we need to convert to seconds (1 minute = 60 seconds, so 3 minutes = 180 seconds).

Average velocity = 75 meters / 180 seconds

Average velocity ≈ 0.42 meters per second

So, the average velocity of the 150 kg cart on the 75-meter roller coaster track is approximately 0.42 meters per second.

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Measurements of magnet strength can be made in a variety of ways, depending on which is most practical for a given application. Here are a few popular units for measuring magnet strength.

1. Tesla

The unit of magnetic force denoted by the letter T is called a tesla. It describes the residual flux density, or the density of a magnetic field.

There are numerous methods to define a tesla in terms of other scientific units of measurement. For instance:

T = kg / (A * s2)

2. Gauss

A magnet is frequently made magnetic by the application of an external magnetic force. The magnetic force that remains in the magnet after the removal of the external force is referred to as remanence.

3. Oersted

Oersteds (Oe), are units used to quantify resistance to demagnetization or coercivity.

4. kilograms

Magnet pull strength is measured in kilograms in terms of magnetism.

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Answer:Force=500

Explanation:

Because it say "the downward force of atmosphere" we use ATP

ATP=100kpa

area=0.05m2

F=ATP × area

 100,000pa×0.05m2 =5000N

Answer:

isn't this kinda like math

Explanation:

In a collision, the human body will strike the seatbelt, steering wheel, dash, or windshield at the same speed as the vehicle.

A collision is when one object comes in contact with another, leading to an abrupt and forceful impact. This means that a collision happens when one object hits another surface or object with an extreme impact that causes injuries or damages.

Prior to a collision, the body inside the vehicle is moving at the speed of the vehicle. So, when a collision occurs, the body continues to move with that speed even though the vehicle may have halted. Thus, the human body will strike at the same speed as the vehicle.  

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Answer:

aye son yall think if i keep answering these questions incorrectly.. they'll find out what im doing and take my li points back?

Explanation:

16 m/s² is the acceleration when a roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.

a=(v-u)/t

a=acceleration=?

v= final velocity = 70m/s

u=initial velocity = 6m/s

t=time= 4 second

a=(v-u)/t

a=(70-6)/4

a=16 m/s²

The rate at which an item changes its velocity is known as acceleration, a vector variable. If an object's velocity is changing, it is accelerating. A moving object can occasionally alter its velocity by the same amount every second. a moving object that changes its speed by 10 m/s per second. Since the velocity is changing by a fixed amount every second, this is known as a constant acceleration. It is important to distinguish between an item with a constant acceleration and one with a constant velocity. Be not deceived! An object is accelerating if its velocity is changing, whether by a fixed amount or a variable quantity. Additionally, a moving item with a constant speed is not accelerating.

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2.18X103 N force must be exerted on a nail with a circular tip of 1.00 mm diameter to create a pressure.

diameter, d = 0.95 mm = 0.95x10-3m

P = 3.1X10^9 Pa

r = d/2 = 0.95/2 x 10^-3 m

= 0.475 x 10^-3 m

Area = \(\pi\) r2

= 3.14 x ( 0.475 x 10^-3 m)2

=  = 3.14 x 0.225 x 10^-6

= 0.706 × 10-6 m2

Force = PXA

= 3.1 x 10^9 x 0.70 6 × 10^-6

F = 2.18X103 N

Pressure , within the physical sciences, the perpendicular force in step with unit per area , or the stress at a factor inside a restricted fluid.

A easy instance of pressure can be seen by retaining a knife to a bit of fruit. In case you keep the flat part of the knife towards the fruit, it might not reduce the area. The force is spread out of a massive vicinity (low strain).

The SI unit of pressure is pascal (represented as Pa) which is identical to one newton in line with rectangular metre (N/m2 or kg m-1s-2).

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Answer:

The particles 'take part' in the wave by bumping into one another and transferring energy. This is why energy can be transferred, even though the average position of the particles doesn't change.

Explanation:

Answer: 554.9 seconds

Explanation:

345.7/0.623=554.9 seconds

The  value in terms of 1m of oil is 1.25

To convert the pressure at a point from 1 meter of water to its equivalent value in meters of oil, we can use the following formula:

Pressure = height × density × gravity

Let's first find the pressure exerted by 1 meter of water.

1 g x 0.8 = 0,8

1 x g x 1m = 0.8 x g * h2

We are to solve for h2

h2 = 1 / 0.8

= 1.25

Hence tghe  value in terms of 1m of oil is 1.25

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The decay constant of a radioactive sample can be determined by using the equation N = N0  ˣ e (e⁻λt) , and the half-life can be found using T1/2 = ln(2)/λ.

(a) To calculate the decay constant, we can use the formula N = N0  ˣ (e⁻λt), where N is the final count rate, N0 is the initial count rate, λ is the decay constant, and t is the time.

By substituting the given values, we can solve for λ. The half-life can be found using the formula T1/2 = ln(2)/λ.

(b) The age of the charcoal sample can be determined using the formula t = (ln(N0/N) ˣ T1/2) / ln(2), where N0 is the initial activity, N is the current activity, T1/2 is the half-life, and t is the age of the sample.

By substituting the given values, we can calculate the age of the charcoal sample.

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Answer:

\(118\; \rm Hz\).

Explanation:

The frequency \(f\) of a wave is equal to the number of wave cycles that go through a point on its path in unit time (where "unit time" is typically equal to one second.)

The wave in this question travels at a speed of \(v= 295\; \rm m\cdot s^{-1}\). In other words, the wave would have traveled \(295\; \rm m\) in each second. Consider a point on the path of this wave. If a peak was initially at that point, in one second that peak would be

How many wave cycles can fit into that \(295\; \rm m\)? The wavelength of this wave\(\lambda = 2.50\; \rm m\) gives the length of one wave cycle. Therefore:

\(\displaystyle \frac{295\;\rm m}{2.50\; \rm m} = 118\).

That is: there are \(118\) wave cycles in \(295\; \rm m\) of this wave.

On the other hand, Because that \(295\; \rm m\) of this wave goes through that point in each second, that \(118\) wave cycles will go through that point in the same amount of time. Hence, the frequency of this wave would be

Because one wave cycle per second is equivalent to one Hertz, the frequency of this wave can be written as:

\(f = 118\; \rm s^{-1} = 118\; \rm Hz\).

The calculations above can be expressed with the formula:

\(\displaystyle f = \frac{v}{\lambda}\),

where

Answer:

118

Explanation:

Answer:

because sound needs medium to transmit.

The sound is produced by vibration and if there is no medium there is no vibration and no vibration means no sound.

Answer:

1) you could put more force behind it. (increase) 2) have another object interact with that object. (increase or decrease) 3) the object could hit a wall and stop or slow down (decrease)

Sorry if wrong

When matter transitions from one state (solid, liquid, gas) to another, this is referred to as a phase change. . These changes occur when enough energy is provided to the system, as well as when the system's pressure is modified.

Liquefaction is a phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading. Liquefaction and related phenomena have been responsible for tremendous amounts of damage in historical earthquakes around the world. Liquefaction occurs in saturated soils, that is, soils in which the space between individual particles is completely filled with water. This water exerts a pressure on the soil particles that influences how tightly the particles themselves are pressed together.

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Answer:

Elevate the wound.

Hope this helped!

Answer:

Increase in strength of hurricanes

Explanation:

A possible result of rising ocean temperatures caused by global warming is an increase in the strength of hurricanes, which is the second option. As the ocean temperatures increase, more energy is available to fuel hurricanes, making them stronger and potentially more destructive.

Global warming is causing the earth's climate to change, which is having a significant impact on the world's oceans. As the temperature of the oceans increases, a variety of effects can occur. One of the most well-documented impacts is the increase in the strength of hurricanes. Hurricanes form over warm ocean waters, and as the water temperature rises, it provides more energy to the storm, making it more powerful. 

Hence, a possible result of rising ocean temperatures caused by global warming is an increase in the strength of hurricanes, which is the second option.

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Answer:

Explanation:

1=3

Answer:

lightning conductors/rods protect buildings by intercepting lightning strikes that may hit these structures.

Air conditioners pass air over cold coils known as evaporator pipes

Explanation:

Lightning rods are made of highly conductive metal, and offer a path of least resistance for any lightning strikes and are connected to longer wires that ground the charge.

air conditioners use a chemical compound called a refrigerant. the most common refrigerant used is r-134a also know as 1,1,1,2-Tetrafluoroethane.  cooling systems use the low boiling points of these refrigerants to constantly cool and compress the chemical to continually move heat from the inside of the system to an external area.

The length of the missing side, x, in the triangle is approximately 4.3 units. The length of the side y is 5 units. The lengths of the other two sides are given as 3.5 and 5 units.

To find the length of x, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. In this case, we have a right triangle with sides 3.5, 4.3, and 5 units.

Using the Pythagorean theorem, we can solve for x:

x^2 + 3.5^2 = 4.3^2

x^2 + 12.25 = 18.49

x^2 = 18.49 - 12.25

x^2 = 6.24

x ≈ √6.24

x ≈ 2.5

Therefore, the length of the missing side x is approximately 2.5 units.

The explanation above outlines how to use the Pythagorean theorem to find the length of the missing side, x, in the given triangle. The Pythagorean theorem is a fundamental principle in geometry that relates the lengths of the sides of a right triangle. By applying the theorem to the triangle in question, we can set up an equation and solve for the unknown side. In this case, we have two known side lengths, 3.5 and 5 units, and we need to find the length of x. By substituting the known values into the Pythagorean theorem equation and solving for x, we find that x is approximately 2.5 units. The lengths of the other sides, y and the given side lengths, are also mentioned in the explanation.

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In Activity 1-1, we will make a variety of observations to determine whether like or unlike charges attract each other. We will start by observing the behavior of objects with the same charge,

such as two positively charged balloons or two negatively charged balloons. If they repel each other, we can conclude that like charges repel. Similarly,

we will observe the behavior of objects with opposite charges, such as a positively charged balloon and a negatively charged balloon. If they attract each other, we can conclude that unlike charges attract.

We will also test these observations by changing the charges of the objects, such as by rubbing a balloon on a sweater to give it a charge. Through these observations, we will be able to determine the behavior of like and unlike charges and how they interact with each other.

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Answer:

it is 4m

Explanation:

Answer:

\(\boxed{m = 0.16875 \;kg}\)

Explanation:

The work done by a constant force F Newtons on a mass of m kg over a distance of d m at an acceleration of a m/s² is given by the  equation:

\(W = F\cdot d\)

This should be equal to the kinetic energy expended

\(KE = \dfrac{1}{2}m v^2\)

By the law of conservation of energy,

W = KE

\(F\cdot d = \dfrac{1}{2}m v^2\)

Given v = 8 m/s, F = 0.12N and d = 45m

\(0.12 \times 45 = \dfrac{1}{2} \times m \times 8^2\)

\(5.4 = 32m\)

\(m = \dfrac{5.4}{32}\\\\\boxed{m = 0.16875 \;kg}\)

A hockey puck with an initial speed of 8.0 m/s coasts 45 m to a stop across the ice. If the force of friction on the puck has a magnitude of 0.12 N the puck's mass is 0.16875 Kg

Work in physics is the energy that is transferred to or from an item when a force is applied along a displacement. In its simplest form, it equals the product of the force's magnitude and the distance travelled for a constant force directed in the direction of motion.

The work done by a constant force F Newtons on a mass of m in kg over a distance of d in m at an acceleration of a m/s² is given by the  equation:

This should be equal to the kinetic energy expended

K E = 1/2 m.v²

work, W = F.d

By the law of conservation of energy,

W = K E

Given v = 8 m/s, F = 0.12 N and d = 45 m

0.12* 45 = .5*m*8²

mass, m =  0.16875 Kg

A hockey puck with an initial speed of 8.0 m/s coasts 45 m to a stop across the ice. If the force of friction on the puck has a magnitude of 0.12 N the puck's mass is 0.16875 Kg

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Therefore, this reaction's internal energy change is -2850 J. This indicates a loss of 2850 J in the system's internal energy.

The definition defined energy as that of the "power to accomplish work" refers to the capacity to apply a force that moves an object. Kinetic energy and potential energy are the two categories of energy. The quantitative characteristic that is transferred to the a body or into a physical process in physics is energy, which is visible in the performance of labor as well as in form of heat and light. Energy is a resource that is conserved; it can only be changed through one form to another and it cannot be produced or destroyed, according to the law of conservation of energy.

According to the formula E = mc2, a body's mass (m) will vary by an amount equal to E/c2 if its energy increases by an amount E (in any form). This equation was developed by Albert Einstein.

Thomas Young coined the term "energy" for the first time in the realm of physics in 1800, but it didn't catch on. Later, Young utilized interference tests to demonstrate that light is indeed a wave.

The equation: can be used to determine the internal energy change for a reaction.

ΔU = Q - W

where U represents the change in internal energy, Q represents heat added to or released from the system, and W represents work performed by or on the system.

Since it is being released into the environment, the heat contributed to the system in this instance is -2290 J, and the work performed by the system is 560 J. Consequently, the internal energy change can be determined as follows:

ΔU = Q - W

ΔU = -2290 J - 560 J

ΔU = -2850 J

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The magnitude of the acceleration of the body is approximately 1.802 m/s^2 when forces of magnitude 5 Newton and 4 Newton act on a body of mass 4.0 kg at a right angle to each other.

To determine the magnitude of the acceleration of a body when two forces act on it at a right angle, we can use the Pythagorean theorem and Newton's second law of motion.Newton's second law states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma). In this case, the net force is the vector sum of the two forces acting on the body.Using the Pythagorean theorem, we can find the magnitude of the net force. Let's call the force with magnitude 5 Newton as F1 and the force with magnitude 4 Newton as F2. The net force (Fnet) can be calculated as the square root of the sum of the squares of the individual forces: Fnet = sqrt(F1^2 + F2^2).Now we can substitute the net force into Newton's second law to find the acceleration (a). Rearranging the formula, we have a = Fnet / m.Plugging in the values, Fnet = sqrt(5^2 + 4^2) = sqrt(25 + 16) = sqrt(41) Newtons. The mass (m) is given as 4.0 kg.

Finally, the magnitude of the acceleration of the body is calculated as a = Fnet / m = sqrt(41) / 4.0 ≈ 1.802 m/s^2.

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Answer:

this is the answer the required questions

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