A box initially has 335 J of kinetic energy. After 2.30 s, the final kinetic energy is 125. Calculate the power.

We can use the given equation for the temperature change in the house to determine the values of C and R:

Th - To C (dTh)/dt = Ku - (Th - To)/R

utilising the knowledge that the furnace raises the temperature by 2°F every 0.1 h, we can calculate the value of K/R:

K/R is equal to (Th-to)/(Ku-(Th-to)/R)

(Th - 60°F)/(90,000 BTU/h - (Th - 60°F)/R) = 2°F/0.1h

When we simplify and find R, we obtain:

R is calculated as (Th - 60°F)/(45,000 BTU/h - 0.5*(Th - 60°F)).

Next, we may calculate the value of C using the knowledge that, with the furnace off, the house temperature drops 2°F in 40 minutes (0.67 h):

C (dTh)/dt = -2°F/0.67h

Using a C-solve, we obtain:

-2°F/(0.67h dTh/dt) = C

We can solve for Th by substituting the value of R that we discovered before into the equation for K/R:

(Th - 60°F)/(90,000 BTU/h - (Th - 60°F)/R) = 2°F/0.1h

ThR - 60,000 + 90,000 Th - Th2 = 2,000 BTU

Th = 57.7°F or 62.3°F

We can use the temperature change information to determine which value of Th is the correct one. Since the furnace raises the temperature in the house, the correct value of Th is 62.3°F.

Substituting the values of Th, To, K, and R into the equation for C, we get:

C = -2°F/(0.67h × (dTh/dt))

C = -2°F/(0.67h × (62.3°F - 60°F)/(0.1h))

C = 167,910 BTU/°F

Substituting the values of Th, To, K, and R into the equation for R, we get:

R = (Th - 60°F)/(45,000 BTU/h - 0.5*(Th - 60°F))

R = (62.3°F - 60°F)/(45,000 BTU/h - 0.5*(62.3°F - 60°F))

R = 0.00038°F·h/BTU

Therefore, the values of C and R for the house are C = 167,910 BTU/°F and R = 0.00038°F·h/BTU.

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The initial speed of the car was approximately 24.9 m/s.

We can use the equation for the work done by kinetic friction to find the initial speed of the car. The work done by kinetic friction is given by:

W_friction = F_friction * d

where;

The force of kinetic friction is given by:

F_friction = m * g * μ

where;

The work done by kinetic friction is equal to the change in kinetic energy of the car:

W_friction = (1/2) * m * v^2

where;

Setting these two equations equal to each other and solving for v, we get:

(1/2) * m * v^2 = F_friction * d

(1/2) * m * v^2 = m * g * μ * d

v^2 = 2 * g * μ * d

v = √(2 * g * μ * d)

Substituting the given values, we get:

v = √(2 * 9.81 m/s^2 * 0.85 * 45 m)

v = 24.9 m/s

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Some ice-rich objects in the Kuiper belt (such as Pluto or Eris) would have grown to larger sizes these are consequences solar wind to clear away the solar nebula.

Eventually, 4 effects clear away the nebula: the Sun's radiation pressure, the solar wind, the gravitation of the individual planets, and close encounters between planets and planetessimals. METEORS, COMETS, ASTEROIDS are left as residues of the planet formation process. Theoretical models for the solar nebula indicate a decreasing temperature with increasing distance from the Sun.

Shock waves from the explosion compressed the cloud of gas and dust. Compression made the cloud collapse, as gravity pulled the gas and dust together, forming a solar nebula. Just like a dancer that spins faster as she pulls in her arms, the cloud began to spin as it collapsed

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The maximum speed at that a car can travel around the curve without slipping is 13.7 m/s.

In this situation, the coefficient of static friction (μs) is 0.34 and the coefficient of kinetic friction (μk) is 0.29. The radius of the curve (r) is 56.0m.

We can use these values to calculate the maximum speed that a car can travel around the curve without slipping. This is determined by the centripetal force (Fc) required to keep the car on the curve and the frictional force (Ff) that keeps the car from sliding off the curve.

The equation for centripetal force is

Fc = mv^2/r,

where m is the mass of the car and v is the speed of the car.

The equation for frictional force is

Ff = μsFn,

where Fn is the normal force.

Since the car is on a level surface,

Fn = mg,

where g is the acceleration due to gravity.

Setting Fc equal to Ff and solving for v gives us the maximum speed that the car can travel around the curve without slipping:

mv^2/r = μsmg v^2

=> μsrg v

=> √(μsrg) v

=> √(0.34 * 56.0m * 9.8m/s^2) v

=> 13.7 m/s

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An ideal gas undergoes an isothermal process. The correct answer to this question is a statement (ii) The internal energy of the gas does not change and statement (iii) .

The average kinetic energy of the molecules does not change. An isothermal process is a thermodynamic process in which the temperature of a system remains constant. This means that the internal energy of the system, which is related to the average kinetic energy of the molecules, also remains constant. Therefore, statements (ii) and (iii) are true. However, statement (i) is not true. In an isothermal process, heat can be added to or removed from the gas in order to keep the temperature constant. For example, if the gas is expanding, heat will need to be added to the system in order to maintain a constant temperature. Conversely, if the gas is being compressed, heat will need to be removed from the system in order to maintain a constant temperature.

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The term "ordinary annuity" refers to the assumption made by the equation that payments are paid at the conclusion of each month.

The present value of an ordinary annuity may be calculated using the equation you've given.

PMT x 1 - [1 / (1+r)]n]r

In this case, PMT stands for the regular payment made at the end of each period, r for the interest rate per period, and n for the overall number of periods.

The present value of the annuity, which is the total present value of all the future payments, is determined by the numerator of the equation.

To account for the time value of money, the denominator of the equation determines the present value of one dollar.

The term "ordinary annuity" refers to the assumption made by the equation that payments will be made at the conclusion of each period.

The equation would have to be modified if the payments were made at the start of each period.

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The magnitude of the electric field inside the capacitor is: E = 93.53 x 10^3 N/C (or 93.53 kN/C)

An electric field is a physical quantity that describes the influence that an electric charge exerts on other charges within the space around it. It is defined as the force per unit charge that a test charge would experience at a given point in space, in the presence of an electric charge or charges.

Electric fields are typically represented by vectors, which have both magnitude and direction. The strength of an electric field is measured in units of volts per meter (V/m).

Electric fields are fundamental to understanding the behavior of electrical systems, including electronic circuits and power grids. They also play a critical role in the functioning of many natural phenomena, such as lightning, the aurora borealis, and the behavior of atoms and molecules.

Part (a) To find the charge on one of the plates, we can use the formula:

Q = C x V

where Q is the charge, C is the capacitance, and V is the potential difference.

Substituting the given values, we get:

Q = 0.072 F x 333 V = 23.976 C ≈ 2.4 x 10^-11 C

Therefore, the charge on one of the plates is approximately 2.4 x 10^-11 coulombs.

Part (b) To find the distance between the plates, we can use the formula:

C = ε0 x (A/d)

where ε0 is the permittivity of free space, A is the area of each plate, and d is the distance between the plates.

Solving for d, we get:

d = ε0 x A / C

Substituting the given values, we get:

d = (8.85 x 10^-12 F/m) x (0.29 m)^2 / 0.072 F = 3.56 x 10^-6 m = 3.56 micrometers (μm)

Therefore, the distance between the plates is approximately 3.56 μm.

Part (c) The electric field inside the capacitor can be calculated using the formula:

E = V/d

where V is the potential difference and d is the distance between the plates.

Substituting the given values, we get:

E = 333 V / (3.56 x 10^-6 m) = 93.53 x 10^3 V/m

However, the question asks for the magnitude of the electric field in newtons per coulomb. To convert from volts per meter to newtons per coulomb, we can use the formula:

1 V/m = 1 N/C

Therefore, the magnitude of the electric field inside the capacitor is:

E = 93.53 x 10^3 N/C (or 93.53 kN/C)

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According to Kirchhoff’s voltage law, the algebraic sum of the voltage around a closed loop in a circuit must be zero which is therefore denoted as option A.

This is also known as electric pressure, electric tension, or potential difference, and it is referred to as the difference in electric potential between two points.

Kirchhoff's Voltage Law states that the voltage around a loop equals the sum of every voltage drop in the same loop for any closed network and equals zero as a result of the absence of breaks.

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At a height of 4.950 metres above the earth, the earth's gravitational pull on a 70 kg physics student in an aeroplane is approximately 688.7 N strong.

The following are some instances of the power of gravity: the energy holding the gases inside the sun. the power behind a ball's descent after being thrown into the air. the force that makes an automobile coast downhill even when the gas is not depressed.

The following equation describes the gravitational attraction between the earth and a mass m object at a distance r from the earth's centre:

F = G * (M * m) / r^2

where G is the gravitational constant, M is the mass of the earth, and r is the distance between the center of the earth and the object.

Substituting the given values, we get:

F = G * (M * m) / r^2

= 6.67 × 10^-11 N·m^2/kg^2 * (5.98 × 10^24 kg * 70 kg) / (4950 m + 6.37 × 10^6 m)^2

≈ 688.7 N

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The magnitude and direction of the car's average acceleration is 0.3 m/s² to south. The result is obtained by using the formula for acceleration.

An acceleration is a rate of change in velocity of an object with respect to time. It can be expressed as

a = Δv/Δt

Where

A car is traveling north with a velocity of 17.7 m/s. After 12 s, its velocity becomes 14.1 m/s in the same direction.

Find the magnitude and direction of the car's average acceleration!

We have

The acceleration can be calculated by the formula above.

a = Δv/Δt

a = (v₂ - v₁)/Δt

a = (14.1 - 17.7)/12

a = (-3.6)/12

a = - 0.3 m/s²

The magnitude of the acceleration is 0.3 m/s². While, the direction is the opposite of the car's motion. It's to south.

Hence, the car travels with an acceleration of 0.3 m/s² to south.

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The semilunar valves will open when the pressure within the ventricles exceeds the pressure within the great arteries.

The heart valve located at the base of the aorta and the pulmonary artery is known as a semilunar valve. It is made up of cusps or flaps that prevent the blood from flowing backwards during the systole phase of the heart's beat. The semilunar valves are responsible for controlling the flow of blood between the ventricles and the main arteries, which directs blood flow away from the heart and towards the organs that are necessary for survival.

Mitral and tricuspid valves prevent blood from flowing backwards into the atria. This is necessary because blood travels from the atria to the ventricles. Pressure differences between the chambers are the driving force behind the opening and closing of semilunar valves, which are controlled by how they are operated.

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The electric field due to a charged rod of length 2a with total charge q uniformly distributed along its length, placed along the z axis with its center at the origin.

To find the electric field everywhere due to the charged rod, we can use Coulomb's law and the principle of superposition. The electric field due to a small segment of the rod at a point P in space is given by:

dE = k dq / r^2

where k is Coulomb's constant, dq is the charge on the segment, r is the distance from the segment to the point P, and dE is the electric field due to the segment. To find the total electric field at P, we integrate this expression over the entire length of the rod, from -a to +a, as follows:

E = ∫ dE = k ∫ dq / r^2

where the integral is taken over the length of the rod. We can express dq in terms of the charge density λ, which is the charge per unit length of the rod, as dq = λ ds, where ds is an infinitesimal length element along the rod. We can also express r in terms of the distance s from the origin to the segment, as r = √(s^2 + z^2), where z is the distance from the segment to the z axis.

Substituting these expressions into the integral, we obtain:

E = k ∫ dq / r^2 = k ∫ λ ds / (s^2 + z^2)

To evaluate this integral, we use a trigonometric substitution, letting s = z tan θ. Then, ds = z sec^2 θ dθ, and the limits of integration become -arctan(a/z) and arctan(a/z). Substituting these expressions into the integral, we obtain:

E = k λ z ∫_{-arctan(a/z)}^{arctan(a/z)} dθ / (1 + (a/z)^2 tan^2 θ)

This integral can be evaluated using the substitution u = tan θ, which gives:

E = k λ z / (2πε_0) ∫_{-a/z}^{a/z} du / (1 + u^2)

where ε_0 is the permittivity of free space. This integral can be evaluated using the inverse tangent function, giving:

E = k λ z / (2πε_0) [arctan(a/z) - arctan(-a/z)]

Simplifying this expression using the identity arctan(-x) = -arctan(x), we obtain:

E = k λ a / (2πε_0 z√(a^2 + z^2))

This is the expression for the electric field due to a charged rod of length 2a with total charge q uniformly distributed along its length, placed along the z axis with its center at the origin. The electric field points radially away from the rod, and its magnitude decreases as 1/r^2 with distance from the rod

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To verify whether you accurately pipette 950l of water into each tube, measure the actual weight of water and compare it with calculated weight.

To verify if you accurately pipetted 950 mL of water into each tube, you can weigh each tube before and after adding the water. Since you know the density of water, you can calculate the expected weight of the water in each tube, which should be equal to 950 g or 0.95 kg.

By subtracting the weight of an empty tube from the weight of a tube filled with water, you can determine the actual weight of the water added to the tube. If the actual weight is close to 0.95 kg, then the pipetting was accurate.

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Calcium is released from the breakdown of potassium ion. Thorium atom is released from the degradation of Uranium atom through alpha decay. The beta decay of Uranium form Neptunium. Radium is released from the alpha decay of thorium and P(15) is released from the beta decay of Silicon atom.

Alpha decay is a common mode of radioactive decay in which a radioactive nucleus emits an alpha particle such as a helium-4 nucleus.

Beta decay is a common mode of radioactive decay in which the nucleus emits beta particles. The daughter nucleus in this decay will have a higher atomic number than the original nucleus.

Calcium is released from the breakdown of potassium ion. Thorium atom is released from the degradation of Uranium atom through alpha decay. The beta decay of Uranium form Neptunium. Radium is released from the alpha decay of thorium and Phosphorus(15) is released from the beta decay of Silicon atom.

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Answer:

physiology

Explanation:

they examine the tissue and cell

In the given HMM Model, the value of the  P ( O1 = X, O2 = X, O3 = Z | S1 S2 S3 ) = 2/3.

HMM :

HMM or Hidden Markov Model is used for state estimation, determining the most probable path and finding the most likelihood HMM that could have produced a string of observations given by O1, O2...OT.

In the light of the below conversations, the result to the given set of questions are as follows

Clearly,

O1 = X => S1 ;

O2 = X => S1 ;

O3 = Z => S3 .

Hence, the transition is from state S1 to state S3.

Now, as per given diagram :

S1 -> S3 = 2/3 as denoted by the green edge from S1 to S3.

Therefore, P ( O1 = X, O2 = X, O3 = Z | S1 S2 S3 ) = 2/3.

This concludes the answer to all corridor of the question along with the necessary explanations.

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The force on the force sensor can be calculated as 2.25 kg x 9.8 m/s² = 22.05 kg If the ramp angle is 90 degrees and the cart mass is 2.25 kg,

Then the force on the force sensor can be predicted using a simple equation. The force on the force sensor is equal to the mass of the cart multiplied by the acceleration due to gravity, which is 9.8 m/s². Therefore, the force on the force sensor can be calculated as 2.25 kg x 9.8 m/s² = 22.05 kg. This means that the force on the force sensor when the ramp angle is 90 degrees and the cart mass is 2.25 kg will be 22.05 kg. This calculation is based on the assumption that there is no friction or other external force acting on the cart. If there are other external forces such as friction, then the force on the force sensor may change.

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The speed of the bowling ball after the collision is 4 m/s.

The momentum is defined as the product of the mass and the velocity of the body.

We can use the law of conservation of momentum to solve this problem, which states that the total momentum of a system remains constant in the absence of external forces. The initial momentum of the system (bowling ball + bowling pin) is:

pi= m₁v₁ + m₂ v₂

= 10 kg x 10 m/s + 3 kg x 0 m/s

= 100 kg m/s

where m₁ is the mass of the bowling ball, v₁l is its velocity before the collision, m₂ is the mass of the bowling pin, and v'₂ is its velocity before the collision (which is zero since it's at rest).

After the collision, the momentum of the system is:

pf = m₁v'₁ + m₂  v'₂

Where v'₁  is the velocity of the bowling ball after the collision, and v'₂ is the velocity of the bowling pin after the collision.

Since momentum is conserved, we have:

pi= pf

Substituting the values we know, we get:

100 kg m/s = 10 kg x  v'₁ + 3 kg x 12 m/s

Solving for v'₁, we get:

v'₁ = (100 kg m/s - 3 kg * 12 m/s) / 10 kg

v'₁ = 4 m/s

Therefore, the speed of the bowling ball after the collision is 4 m/s.

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The Gibbs Free Energy (ΔG) at 298 K for the conversion of A to B can be calculated using the equation ΔG = ΔH - TΔS.

Here, ΔH is the enthalpy of the reaction and ΔS is the change in entropy. Therefore, the Gibbs Free Energy for the conversion of A to B at 298 K is given by: ΔG = ΔH - (298 K)(-26.8 J K^-1 mol^-1)

Therefore, the value of the Gibbs Free Energy for the conversion of A to B at 298 K is equal to 7.54 kJ mol^-1. This value indicates that the conversion of A to B is thermodynamically favourable at 298 K, since the Gibbs Free Energy is negative.

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The Gibbs free energy is a thermodynamic potential in thermodynamics that can be used to determine the maximum amount of non-volume expansion work that a thermodynamically closed system is capable of performing at constant temperature and pressure.

The formula  ΔG =  ΔH - T ΔS can be used to determine the Gibbs Free Energy ( ΔG) at 298 K for the conversion of A to B.

Here, ΔH represents the reaction's enthalpy and ΔS represents the entropy change.

Therefore, 7.54 kJ mol^-1 is the value of the Gibbs Free Energy for the conversion of A to B at 298 K. Given that the Gibbs Free Energy is negative, this number shows that the conversion of A to B is thermodynamically advantageous at 298 K.

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The ball must be thrown with a initial speed of 31.30 m/s from the ground level to rise it to a maximum height of 50m and it will in the air for 6.38 seconds.

Given, we have the distance ball needs to travel = 50m and we know that the final velocity at the maximum height when thrown vertically will be 0. And the acceleration will be 9.8m/s²  which is acceleration due to Earth's gravity. Now, using the equations of motion we can find the initial velocity needed :

⇒ v² -  u²  = 2as where v stands for final velocity, u stands for initial velocity , s stands for the distance travelled and a stands for the acceleration. Therefore,

⇒ -u² = 2 x (-9.8m/s²) x 50m

⇒  u²= 980         (taking square roots on both sides of the equation)

⇒ u  = 31.30 m/s  

Now, we can easily find the duration for which the ball stays in the air using the equation v = u + at.

⇒ 0  = 31.30 + (-9.8)t     (solve the equation for t)

⇒ 31.30 = 9.8t

⇒31.30 / 9.8 = t

⇒t = 3.19 seconds

Now, this is the time required by the ball to reach the maximum height, the total time for which the ball stays in air will be twice of this because we also have to take account of the time required by the ball to reach to the ground from the maximum height which is equal to the time we calculated since this is a free fall situation.

Therefore, total time for which the ball stays in the air after throwing it with a speed of 31.30 m/s : 2 x 3.19 seconds. The graphs are attached below.

⇒  6.38 seconds

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Communication cannot be undone once it has been sent, hence it is impossible to undo any effects it may have had on the recipient.

Interpersonal communication is an irreversible process; you can later apologize for something you said and wish you hadn't said it, but you can't take it back. We frequently act and speak with people depending on prior communication experiences.

In passive sentences, the typical word order is reversible. The two stamps were turned on their sides by him. A second vehicle backed out of the drive. He drove away after doing a U-turn. Driving backwards directly at the officer of the law, he.

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Throwing a 5kg stone with an initial vertical velocity of 8.0 m/s downward and an initial horizontal velocity of 7.0 m/s away from the cliff, without any air resistance. After the stone is in the air, its acceleration remains constant at 9.8 m/s² downward but its speed changes. The statement is true.

Once the stone is released from your hand, it will experience a constant acceleration of 9.8 m/s² downward due to the force of gravity. This means that its speed will change over time as it falls.

In the vertical direction, its speed will increase at a rate of 9.8 m/s², so it will be moving faster and faster as it falls. In the horizontal direction, the stone will continue to move with a constant velocity of 7.0 m/s, as there is no force acting in that direction to change its speed.

The motion of the stone can be analyzed using kinematic equations, which describe the relationships between distance, time, acceleration, and velocity. The equations for motion in one dimension (vertical) are:

d = vit + (1/2)at²

vf = vi + at

where d is the distance traveled, vi and vf are the initial and final velocities, a is the acceleration, and t is time. Using these equations, you can calculate the stone's speed and distance fallen at any point in time.

In summary, the stone will experience a constant acceleration of 9.8 m/s² downward due to gravity once it is released from your hand, and its speed will change over time as it falls.

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The equation to calculate the distance between the plates of a capacitor can be derived from the given information:

Electric field strength (E) = Voltage (V) / Distance between plates (d)

Given that the electric field strength is 1.8 kV/cm and the voltage is 89.6 V, we can substitute these values in the equation:

[tex]1.8 kV/cm = 89.6 V / d[/tex]

To solve for the distance d, we can rearrange the equation:

[tex]d = 89.6 V / (1.8 kV/cm)[/tex]

Here, the voltage is expressed in volts and the distance is expressed in centimeters. This equation can be used to calculate the distance between the plates of the capacitor, given the voltage and the electric field strength.

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The maximum altitude is 40km . The range of projectile is 3398.28 m and the displacement is 2575.12 m.

(a) Angle θ = 30°

altitude=40 km

Time = t = 20 s

Time of flight of a projectile is given by the expression,

  t = (2usinθ/g)

  20 = (2 X usin30 / 9.81)

  u = 196.2 m/s

(b) Maximum altitude is given by H =

  H = u²sin²θ / 2g

  H = 196.2² X sin² 30 / 2 X 9.81

  H = 490.6 m

(c)  Range of projectile is given by = R =

  R = u²sin2θ / g

  R = 196.2² X sin 2 X 30 / 9.81

  R = 3398.28 m

(d) Horizontal velocity = ucosθ = 196.2 x cos 30 = 169.91 m/s

Vertical velocity = usinθ = 196.2 x sin 30 = 98.1 m/s

We have equation of motion s = ut + 0.5 at²

Horizontal motion;

u = 9.81 m/s

a = 0

t = 15 s

Substituting,

= s = 169.91 x 15 + 0.5 x 0 x 15² = 2548.71 m

Vertical Motion;

= s =  98.1 x 15 + 0.5 x -9.81 x 15² = 367.88 m

Total displacement = √ ( 2548.71² + 367.88²) = 2575.12 m

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Answer: the mass is18 kg

Explanation:

Answer:

Explanation:

Kinetic energy=1/2 *m *v^2

                      =1/2 * 18* 4.7*4.7=198.81J

Vegetable oil does not burn if we use it while frying it because liquid oil itself does not burn. Rather, it is the vapor from oil that has reached its boiling and vapor point that ignites.

There are three things, for our purposes, to understand. The flash point, the fire point, and the ignition point. The ignition point is responsible for burning. To avoid oil burns, carefully and gently lower the food into the oil with your hands or tongs, and make sure that it drops away from you.

When oil starts to smoke it will impart a burnt, bitter flavor thanks to a substance released called acrolein. During this process, harmful compounds called polar compounds may also be released as a byproduct of the breakdown of that oil as it's exposed to heat.

Therefore, vegetable oil does not burn if we use it while frying it because liquid oil itself does not burn.

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The equilibrium force vector would need to be equal in magnitude and opposite in direction to the resultant force vector.

The equilibrium force vector is a third force vector that is added to a system in order to place it in a state of equilibrium. Equilibrium means that the net force acting on the system is zero, so the system remains at rest or moves with a constant velocity.

In general, the concept of an equilibrium force vector can be applied to any system that is subject to multiple forces or other influences, and the equilibrium force vector is the force that is needed to balance out those forces or influences and maintain a state of equilibrium. However, the concept of equilibrium and the equilibrium force vector remain useful for understanding and analysing the forces and dynamics of a system.

In the context of a stationary object subject to two force vectors, the equilibrium force vector is the force that is needed to balance out the other two forces so that the net force on the object is zero, and the object remains stationary in equilibrium. The magnitude and direction of the equilibrium force vector must be carefully calculated to ensure that it cancels out the net force on the object.

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The F4 key is supposed to produce a frequency of 349.2 Hz. Since the estimated frequency of the out-of-tune F4 key is lower than the expected frequency, this indicates that the key is flat.

What is Frequency?

Frequency refers to the number of cycles or repetitions of a periodic wave that occur in a given unit of time. It is usually measured in Hertz (Hz), which represents the number of cycles per second.

For example, in sound waves, frequency refers to the number of pressure fluctuations per second that are perceived by the human ear as a particular pitch or tone. A high-pitched sound, such as a whistle, has a high frequency, while a low-pitched sound, such as a bass guitar, has a low frequency.

Therefore, the frequency being played by the out-of-tune F4 key is approximately 329.6 Hz.

To solve for the frequency of the out-of-tune F4 key, we can use the beat frequency formula:

beat frequency = |frequency of tuning fork - frequency of out-of-tune note|

For the first trial with the E4 tuning fork, we can write:

13.5 Hz = |329.6 Hz - frequency of out-of-tune note|

Solving for the frequency of the out-of-tune note, we find:

frequency of out-of-tune note = 329.6 Hz - 13.5 Hz = 316.1 Hz

For the second trial with the G4 tuning fork, we can write:

48.9 Hz = |392.0 Hz - frequency of out-of-tune note|

Solving for the frequency of the out-of-tune note, we find:

frequency of out-of-tune note = 392.0 Hz - 48.9 Hz = 343.1 Hz

Since we have two estimates of the frequency of the out-of-tune note, we can take their average to get a more precise estimate:

(frequency of out-of-tune note) avg = (316.1 Hz + 343.1 Hz) / 2 = 329.6 Hz

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k = 2.8 x 104 lb/ft. is a constant-length linear spring that is parallel to a 700 lb over force-generating shock absorber.

The main determinant of an object's position and rate of motion is its velocity. It can be explained as the distance an object travels in one unit of time. The dispersion of the objects in a given amount of time is referred to as velocity. Vector sum (v) squared is equal to the sum of the beginning velocity (u) squared and the acceleration (a) times the displacement times two (s). In order to find v, we solve for v such that final velocity (v) = numerator of speed (u) divided plus two times accelerated (a) twice displacement (s).

To calculate kinetic energy of the car KE = (1/2)mv^2

to convert the mass of the car he velocity from mph to ft/s (1 mph = 1.47 ft/s), we get :KE = (1/2)(3600/32.2)(4.0 x 1.47)^2

KE = 13325 ft-lb, the potential energy will be calculated as PE = (1/2)kx^2

since the displacement of the spring is unknown, we can express it in terms of k and solve for k using the given information

we know that constant force of 700 lb is generated over a displacement of 0.25 ft.W = Fd

W = 700 lb x 0.25 ft

W = 175 ft-lb

e can equate the two expressions for potential energy and solve for k:

(1/2)kx^2 = 175

For the bumper with the shock-absorbing unit, the displacement x is 0.25 ft, so we get:

1/2)k(0.25)^2 = 175

k = 280000 Ib/ft

Therefore, the value of k for the simple linear spring is k = 2.8 x 10^4 lb/ft.

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If 3 circular bars made up of glass, steel, aluminium having equal cross section applied with muiltiaxial load at same point in same direction , The bar will produce more stress: glass

If 3 circular bars made up of glass, steel, aluminium having equal cross section applied with muiltiaxial load at same point in same direction, the bar made of glass will produce more stress.

This is because the modulus of elasticity of glass is lower than that of steel and aluminium. The modulus of elasticity is a measure of a material's resistance to deformation under load. A lower modulus of elasticity means that the material is more prone to deformation and therefore, will produce more stress under the same load.

In general, the stress produced in a material under load is given by the equation:

stress = load / cross-sectional area

Since the cross-sectional area of the bars is equal and the load applied is the same, the stress produced will depend on the modulus of elasticity of the material. Therefore, the bar made of glass will produce more stress under the same load as compared to the bars made of steel and aluminium.

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The steel bar will produce the most stress when applied with a multi-axial load at the same point in the same direction, as steel is the strongest of the three materials (glass, steel, and aluminium).

The bar made of steel will produce more stress under a multi-axial load at the same point in the same direction. This is because steel has a higher Young's modulus, or the measure of the ability of a material to withstand changes in length when under tension or compression, than glass or aluminum. Therefore, it will experience greater stress under the same loading conditions. Steel has a much higher Young's modulus than glass or aluminum, meaning it will experience greater stress under the same loading conditions.

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