Which is expected to have the lowest specific heat capacity at 25 degrees Celsius?
a. air
b. iron
c. methanol
d. carbon dioxide

To find the force that will stretch the wire 5 mm, we can use the concept of Hooke's law which states that the force applied to a spring is directly proportional to its stretch or compression. Therefore, the force required to stretch the wire 5 mm is 250 N.

To find the force required to stretch the wire 5 mm, we'll use Hooke's Law, which states that the force applied to a spring is directly proportional to its elongation (stretch).
1. Given values:
  - Initial force, F1 = 150 N
  - Initial stretch, x1 = 3 mm = 0.003 m
  - Desired stretch, x2 = 5 mm = 0.005 m
2. Using Hooke's Law, we can establish the proportionality constant (k), also known as the spring constant:
  F1 = k * x1
3. Solve for k:
  k = F1 / x1 = 150 N / 0.003 m = 50000 N/m
4. Now, use Hooke's Law again to find the force required to stretch the wire 5 mm (F2):
  F2 = k * x2
5. Plug in the values and solve for F2:
  F2 = 50000 N/m * 0.005 m = 250 N
So, the force that will stretch the wire 5 mm without exceeding the elastic limit is 250 N.

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Please find attached photograph for your answer. Answer is c. 16 times. Do comment if you have any query. Don't forget to mark me Brainliest if you like my answer

Answer:ture

Explanation:

The velocity of the cannonball along the x axis after 7.59 s is therefore:vx = (150 m/s)(cos 0°)(7.59 s)vx = 1139.85 m.(d) Dimensionless velocity and dimensionless time are given by:v' = v/vTt' = 2gh/ vT²These expressions simplify the solution to part (c).

(a)  Terminal velocity along y axis is the maximum velocity that the cannonball can reach along y-axis as it falls. When it reaches terminal velocity, the acceleration of the cannonball becomes zero since its weight is balanced by air resistance. According to Stoke’s law, the drag force (Fd) experienced by a sphere moving slowly in a fluid is given by: Fd = 6πηrvwhere:η is the kinematic viscosity of the fluidv is the speed of the sphere, andr is the radius of the sphereHence, the terminal velocity (vT) of the cannonball is given by:  mg = 4/3 πr³ρg   [weight of cannonball = volume of cannonball x density of cannonball x acceleration due to gravity]6πηrvT = mgvT = mg/ (6πηr)The velocity of the cannonball along the y-axis is zero at the start and it reaches terminal velocity after falling through some height h.The velocity of the cannonball at any time t is given by:v = (2gh/ 3πr² ρ)½The velocity of the cannonball along the y axis is 131.3 m/s.(b)At 95% of terminal velocity, the velocity of the cannonball is 124.74 m/sUsing the expression:v = (2gh/ 3πr² ρ)½124.74 = (2gh/ 3πr² ρ)½h = (3/2)(124.74)² πr²ρ/g = 1509.65 mTherefore, it takes 7.59 s to reach 95% of the terminal velocity.(c)At the time determined in part (b), the velocity of the cannonball along the x axis can be calculated using the equation below:vx = vo xcosθtwhere vo is the initial velocity along the x-axis, θ is the angle of projection, and t is the time taken.At launch, the initial velocity along the x axis is 150 m/s and the angle of projection is 0°.

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Answer:

Mass , this is the answer because mass allows objects of any size to be moved depending on the force of the impact , push or turn

Answer:

Measurement is the assignment of a number to a characteristic of an object or event

Explanation:

Answer:

Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or event

The specific plot event in Passage 2 that best supports the theme that things are not always what they seem is not specified.

Without knowledge of the specific plot events in Passage 2, it is not possible to identify the particular event that best supports the theme that things are not always what they seem.

To provide a comprehensive answer, it would be necessary to have access to Passage 2 and analyze the various plot events within it. Only by closely examining the plot events and their depiction of deceptive appearances can we identify the most relevant event that aligns with the theme.

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Answer:

The two main components of an atom are the nucleus and the cloud of electrons

postive ion

Explanation:

your welcome !!

postive ion explation - When an atom that has no charge loses two electrons, it becomes a positive ion. negative ion. positive isotope. negative isotope When an atom that has no charge loses two electrons, it becomes a positive ion.

Answer:

Explanation:

F = m * a

The apple's acceleration is not influenced by the acceleration due to gravity for this question.  In real life it most certainly is influenced by gravity.

F = m * a

F = 10 Newtons.

a = 6 m/s^2

m = 10/6 = 1.66 kg. Mighty  large apple

The answer is D. distance between trough and crest. Wavelength is the distance between two consecutive points of the same phase on a wave, such as two adjacent crests, troughs, or zero crossings.

Wavelength is the distance between two consecutive points of the same phase on a wave, such as two adjacent crests, troughs, or zero crossings. So the answer is the distance between the trough and crest.

The other options are incorrect. Option A is the length of time the wave has been in motion, which is not the same as wavelength. Option B is the distance between the trough and the trough, which is half of the wavelength. Option C is the distance between the quiet water level and the crest, which is not a physical measurement of the wave.

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The time constant (in ms) of the RC circuit is 3.75 ms. Hence, the correct option is  (d) 3.75 ms.

The rate of decay of the current in a charging capacitor is proportional to the current in the circuit at that time. Therefore, it takes longer for a larger current to decay than for a smaller current to decay in a charging capacitor.A capacitor is discharged through a 20.0 Ω resistor.

The discharge current decreases to 22.0% of its initial value in 1.50 ms. We can obtain the time constant of the RC circuit using the following formula:$$I=I_{o} e^{-t / \tau}$$Where, I = instantaneous current Io = initial current t = time constant R = resistance of the circuit C = capacitance of the circuit

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The time constant of the RC circuit is approximately 0.674 m s.

To determine the time constant (τ) of an RC circuit, we can use the formula:

τ = RC

Given that the discharge current decreases to 22.0% of its initial value in 1.50 m s, we can calculate the time constant as follows:

The percentage of the initial current remaining after time t is given by the equation:

I(t) =\(I_oe^{(-t/\tau)\)

Where:

I(t) = current at time t

I₀ = initial current

e = Euler's number (approximately 2.71828)

t = time

τ = time constant

We are given that the discharge current decreases to 22.0% of its initial value. Therefore, we can set up the following equation:

0.22 =\(e^{(-1.50/\tau)\)

To solve for τ, we can take the natural logarithm (ln) of both sides:

ln(0.22) = \(\frac{-1.50}{\tau}\)

Rearranging the equation to solve for τ:

τ = \(\frac{-1.50 }{ ln(0.22)}\)

Calculating this expression:

τ ≈ 0.674 m s

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C. The metal and the plastic allow electricity to flow through the wire easily.

A conductor is a material that allows electricity to flow through it easily, with little resistance. Conductors are typically made of metal, such as copper or aluminum, and are used in electrical wires to transmit electrical signals and power.

The thin metallic wires inside the plastic covering are usually made of a conductor, such as copper or aluminum, which allow electricity to flow through them easily. The plastic covering, or insulation, protects the metal wires from touching each other and short-circuiting, which can cause electrical hazards, such as fires or shocks. The plastic also helps to keep the metal wires in place and protected from physical damage.

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The coefficient of static friction needed for the car not to skid at 89 km/h on a properly banked curve with a radius of 86 m is approximately 0.47.

A force called static friction prevents an object from moving along the path. This friction happens when two materials are slid over one another. Conflict is there all around us. For instance, when we walk, our feet are in contact with the ground.

μs = tan(x)

where μs is the coefficient of static friction, and θ is the angle of banking of the curve.

The angle of banking can be calculated as:

\(x = tan^-1(v^2 / rg)\)

where v is the speed of the car, r is the radius of the curve, and g is the acceleration due to gravity \((9.81 m/s^2).\)

We first need to convert the given speeds to meters per second:

\(67 km/h = 18.61 m/s\\89 km/h = 24.72 m/s\)

Substituting the given values into the equation for the angle of banking, we get:

\(x = tan^-1((24.72 m/s)^2 / (86 m * 9.81 m/s^2)) =25.2\)

Now we can use this angle to calculate the coefficient of static friction needed for the car not to skid at 89 km/h:

μs = tan(θ) = tan(25.2°) ≈ 0.47

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Answer:

Explanation:

The mass of the object can be found by using the formula

\(m = \frac{p}{v} \\ \)

p is the momentum

v is the velocity

From the question we have

\(m = \frac{10}{20} = \frac{1}{2} \\ \)

We have the final answer as

Hope this helps you

So, the amount of heat refracted from water as it freezes into ice is 146 J.

Specific latent heat is the amount of heat required to change the phase of a unit mass of a substance at a constant temperature. It is a specific quantity, meaning that it is defined for a particular substance and a particular phase change. The term "latent" refers to the fact that the heat is absorbed or released during the phase change, but does not result in a change in temperature of the substance. For example, the specific latent heat of fusion of ice is the amount of heat required to change 1 kilogram of solid ice at 0°C into 1 kilogram of liquid water at 0°C, without changing the temperature of the water. The SI unit for specific latent heat is joules per kilogram (J/kg).

Here,

To calculate the amount of heat refracted from water as it freezes into ice, we need to consider two stages:

Cooling the water from 10°C to 0°C:

The amount of heat lost by the water is given by:

Q1 = m * c * ΔT

where m = 0.5 kg is the mass of water, c = 4.2 J/(kg·°C) is the specific heat capacity of water, and ΔT = (0 - 10)°C = -10°C is the change in temperature.

Thus, Q1 = 0.5 kg * 4.2 J/(kg·°C) * (-10)°C = -21 J (Note that the negative sign indicates heat loss).

Freezing the water at 0°C into ice:

The amount of heat lost by the water is given by:

Q2 = m * Lf

where m = 0.5 kg is the mass of water, and Lf = 334 J/kg is the specific latent heat of fusion of ice.

Thus, Q2 = 0.5 kg * 334 J/kg = 167 J

Therefore, the total amount of heat refracted from water is:

Q_total = Q1 + Q2 = -21 J + 167 J = 146 J

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Answer:

x = A sin w t         for SHM where w = angular frequency

sin w t = x / A = .12 / .15 = .8    where w t is the angle in degrees

w t = 53.1 deg       (w itself is in rad / sec)

since v = A w cos w t  

then v / x = w cos w t / sin w t = w / tan w t

w = v / x * tan 53.1 = 1.7 / .12 * tan 53.1 = 18.9 /sec

Also for SHM    w = (k / m)^1/2

m = k / w^2 = 75 / 18.9^2 = .21 kg

Answer:

your answer should be c

Answer:

D.the branch that deals with the relations of organisms to one another and to their physical surroundings

Answer:

earth

Explanation:

its the only planet.

Your shoes get electrons from the carpet and get negatively charged. The electrons spread upward until your whole body has a negative charge in it. The negative charge in your hand pushes back electrons on the doorknob. The front of the doorknob gets a strong positive charge. Electrons jump from your hand to the doorknob.

You feel this electron jump as a doorknob shock.

Hope it helps!

The LC circuit will also need a capacitance of 1.01 μF.

Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

Xl = Xc

where;

Xl = ωL

Xc = 1/ωC

ωL = 1/ωC

ω²LC = 1

C = 1/(ω²L)

C = 1/(2πf)²(L)

C = 1/(4π²f² L)

C = 1/(4π² x 100² x 2.5)

C = 1.01 x 10⁻⁶ F

C = 1.01 μF

Thus, the LC circuit will also need a capacitance of 1.01 μF.

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Answer:

2400 m

Explanation:

Dimensions in units need to match so

 2 min = 120 sec

then rate X time = distance

       20 m/s  X 120 s  = 2400 m

Answer:

Explanation:

it is 43km

A bicycle coasting along a level road is an example of kinetic energy, while thermal energy is used to heat water. Throwing a football is another example of kinetic energy, and mechanical energy is required to wind the mainspring of a clock.

A. A bicycle coasting along a level road - Kinetic energy is the energy of motion. In this case, the bicycle is moving along a level road, so it has kinetic energy.

B. Heating water - Thermal energy is the energy of heat. When water is heated, it absorbs thermal energy, which increases its temperature.

C. Throwing a football - Kinetic energy is the energy of motion. When a football is thrown, it has kinetic energy due to its motion.

D. Winding the mainspring of a clock - Mechanical energy is the energy of motion and position. When the mainspring of a clock is wound, it stores mechanical energy, which is then released as the clock runs.

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Answer:

A

Explanation:

Answer: true

Explanation:mark me brainliest

Option-d).  it remains the same because both are at the same temperature. If the temperature does not increase while the ice melts, the internal energy of the ice and water mixture changes.

A temperature is a unit of hotness or coldness that can be described in terms of a variety of arbitrary scales. It also indicates the direction in which heat energy will naturally flow, i.e., from a hotter body to a colder body (one at a lower temperature). Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a considerably higher temperature than a burning match, but it has a far larger total heat energy than a match. As opposed to extensive qualities like mass or volume, which are reliant on the amount of stuff being studied, the temperature is an intensive attribute, just like pressure or density.

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A cannonball has more kinetic energy than the recoiling cannon from which it is fired because the force on the ball acts over a longer distance.

When a cannon fires a cannonball, both the cannon and the cannonball experience an equal and opposite force (Newton's third law).

However, the cannonball has more kinetic energy because the force on it acts over a longer distance.

The cannonball travels a greater distance in the air, while the cannon's motion is restricted due to friction between it and the ground.

This results in a larger work done on the cannonball, which in turn results in more kinetic energy.

Summary: The cannonball has more kinetic energy than the recoiling cannon because the force acts over a longer distance for the cannonball, resulting in more work done and greater kinetic energy.

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Answer:

c) It has more nitrogen than oxygen.

Explanation:

Our Earth’s atmosphere has more nitrogen (78%) than oxygen (21%). Hence, the option (c) is the correct answer.

Answer:

C. It has more nitrogen than oxygen.

Explanation:

Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere).

Answer:

c: long and thin resistor.

Explanation:

The resistance of a resistor is given by:

R = ρ*L/A

where:

R = resistance

ρ = resistivity (depends on the material)

L =  length of the material

A = cross-sectional area of the material

We can see that the length is on the numerator, which means that if we increase the length, then the resistance is increased.

We also can see that the cross-sectional area is on the denominator, then if we increase the area (for example, with a ticker resistor) the resistance decreases.

Then if we want to maximize the resistance, we need to have a long and thin resistor, so the correct answer is c.