If all of the gravitation potential energy of the apple on the tree is transferred to the spring when it is compressed. What is the spring constant of this spring?

Acceleration means change in velocity with respect to time If the body is moving with uniform velocity then there will be no change in velocity which means acceleration will be 0.

Answer:

a = (V2 - V1) / t = 0 if V2 = V1

True

Note: an object moving in a circular path with a uniform speed does not have a uniform velocity

Answer:

The answer is below

Explanation:

Given that the volume (V) = 0.4 m³, temperature difference (ΔT) = 270 K - 350 K = -80 K, pressure (P) = 60 kPa = 60000 Pa, R = 8.314 J/molK

Since we have constant volume, we can use the final state parameters to calculate the number of moles using the ideal gas law:

\(PV=nRT\\\\n=\frac{PV}{RT} =\frac{60000*0.4}{8.314*270} =10.69\ moles\)

Given that the molar heat capacity at constant volume (\(C_v\)) = 28.0 J/(mol K), the heat absorbed (Q) is:

\(Q=nC_v\Delta T=10.69*28*(-80) = -23945.6\ J\\\\Q=-23.95\ kJ\)

Q ≈ -24 kJ

Answer:

The Answer is: ∴t=150 nm.

Studying Newton's 3 Laws of Motion and exploring the biomechanical principles that govern human movement can greatly deepened one's understanding of how physical activity functions.

Newton's First Law of Motion, denoting the law of inertia, elucidates the significance of maintaining a poised stance and stable bodily position during shooting in basketball or executing weightlifting exercises.

A foundation built upon equilibrium enables the maximization of power transfer and precision, accentuating performance in these activities.

Furthermore, Newton's Second Law of Motion, which establishes a correlation between force, mass, and acceleration, significantly influences the approach to resistance training. The comprehension of the intricate interplay between external forces and the body informs the adaptation of workouts to optimize muscle development and strength gains.

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Answer:

length, width, thickness, mean diameter

mass, volume, density, sphericity, surface area, aspect ratio.Jan 7, 2019

Explanation:

Answer:

Since, In Chemical change the property of the substance is changed resulting in the formation of a new substance where as In Physical change the property of the substance remains unchanged resulting in the formation of no new substance. Therefore, Cutting of Carrot is a physical change.

Explanation:

hope this helps    :)

Answer:

gburhgjn

Explanation:

hrbvufv

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

where

f is the force

m is the mass

From the question

f = 140 N

m = 70 kg

We have

\(a = \frac{140}{70} = \frac{14}{7} \\ \)

We have the final answer as

Hope this helps you

Bill's ball will go 2.25 times higher than Joe's ball.

This is because the relationship between an object's initial speed and the height it reaches is quadratic. In other words, if you double the initial speed of an object, it will go four times as high. If you triple the initial speed, it will go nine times as high, and so on.

In this case, Bill can throw the ball 1.5 times faster than Joe, so we can use the formula:

height of Bill's ball = (initial speed of Bill's ball)² / (initial speed of Joe's ball)²

Since Bill's initial speed is 1.5 times faster than Joe's, we can plug in the values:

height of Bill's ball = (1.5)² / (1)²

height of Bill's ball = 2.25

Therefore, Bill's ball will go 2.25 times higher than Joe's ball.

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The minimum value of the coefficient of static friction which will prevent the blocks from moving in a pulley system is  Fs=μsFN.

Create an inclination plane out of one of the materials, then place a body made of the other material on it to determine the minimum coefficient of static friction between the two. Up until the body begins to slide, steepen the incline. The coefficient of friction is the angle's tangent. A force that opposes motion is friction. Both static and kinetic friction work to keep a body at rest and to slow down its motion once it is moving. The normal force (FN), also known as the force produced perpendicularly by a body against the surface along which it is traveling, is proportional to the force generated by static friction (Fs). Fs=μsFN.

The properties of the two surfaces that are in contact with one another affect this coefficient.

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A Hilbert-transform filter is used to generate an SSB signal.

A Single Sideband (SSB) signal is generated by filtering one sideband of a modulated signal and suppressing the other sideband and the carrier signal. The most common way of generating an SSB signal is by using a Hilbert-transform filter.

This filter is used to shift the phase of the modulated signal by 90 degrees, effectively converting the upper sideband to the lower sideband, or vice versa. By filtering out one of the sidebands, the SSB signal can be generated. Therefore, option C is the correct answer.

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--The complete question is, What type of digital signal processing filter is used to generate an SSB signal?

A. An adaptive filter

B. A notch filter

C. A Hilbert-transform filter

D. An elliptical filter--

Answer:

The direction of the net force is at a tangent to the circle.

Answer:

Explanation: a people's whole way of life

Answer:

D. The General Adaptation Syndrome

Explanation:

Hans Selye, an endocrinologist, developed the "Stress Theory." He showed the relationship of "stress" to the person's development of disease.

Under stress, a person's body experiences changes. The person tries to cope with these through three stages: Alarm Reaction Stage, Resistance Stage and Exhaustion Stage. It is at the last stage that a person's immune system is placed at a huge risk. Once the person is exposed to a stressor for a period of time, he becomes hopeless and his body tends to give up coping. He then succumbs to stress-related illness.

Answer:

weight of the person and reaction force according to that weight by the elevator

every action has an equal and opposite reaction

Weight of the person and reaction force according to that weight by the elevator is balanced.

According to the third law, when two objects interact, they exert equal-sized and opposite-direction forces upon one another.

A person rides in an elivator then the equal and opposite force for the force of the elevator floor pushing up on the person as described by Newton’s third law and are balanced.

Weight of the person and reaction force according to that weight by the elevator is balanced.

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Explanation:

back ground radiation is a natural radiation so basically everything emits background radiation. so if it were harmful, the world wouldn't be here,

so it is false

it knocks electrons out of atoms, this is because ionising radiation is a radiation that had enough energy to remove electrons form the atoms and molecules.

true because exposure to radon can damage biological molecules such as proteins, which leads to abnormal patterns of cell division, which leads to cancer.

hope it is helpful, if not , you can report and let someone else try it out.

do vote, thank you

Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

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Using the visual spectrum, we can distinguish between various light wavelengths.

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The variables which are involved in understanding Kepler's third law of

motion are

Kepler's third law of motion states that the the square of the orbital period of

a planet is proportional to the cube of the semi-major axis of its orbit. He

also inferred that the greater the distance, the slower the orbital velocity.

This thereby makes option D the most appropriate option as it contains the

orbital velocity and distance to sun variables.

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Answer:orbital velocity distance to sun

Explanation:

Answer:

D.

Explanation:

all of the options are true.

To boost the output voltage of the solar PV array to 400V using a boost converter, the output current of the converter needs to be approximately 3.3A.

A boost converter is used to increase the output voltage of a solar PV array. In this case, the solar PV array has an output voltage of 220V and a rated current of 6A at best conditions. The goal is to boost the output voltage to 400V (DC) using the boost converter.

To achieve this, we can use the formula for power, which is P = V x I. Since the power remains constant, we can equate the input power (220V x 6A) to the output power (400V x I), where I is the output current.

From this equation, we can solve for I:

220V x 6A = 400V x I

1320W = 400V x I

I = 1320W / 400V

I = 3.3A

Therefore, the output current of the boost converter needs to be approximately 3.3A in order to achieve an output voltage of 400V.

In conclusion, to boost the output voltage of the solar PV array to 400V using a boost converter, the output current of the converter needs to be approximately 3.3A.

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The ratio of the rocket's initial mass to final mass is 1.595

Usng the rocket formula, for change in speed

Δv = v㏑(Mi/Mf) where

Given that a rocket's orbital maneuver requires a speed increase of 1.05 × 10³ m/s. If its engine has an exhaust speed of 2.25 × 10³ m/s,

So,

Making (Mi/Mf) subject of the formula, we have

(Mi/Mf) = exp(Δv/v)

So, substituting these into the equation for the rocket speed, we have

(Mi/Mf) = exp(Δv/v)

(Mi/Mf) = exp(1.05 × 10³ m/s/2.25 × 10³ m/s)

(Mi/Mf) = exp(0.467)

(Mi/Mf) = 1.595

So, the ratio of the rocket's initial mass to final mass is 1.595

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Answer:

Explanation:hffdghbjhhfgdvbjnjhjvcfgdfcvhjkm,kjjhgjh

Answer:

1). Brake pedal or lever

2). A pushrod also called an actuating rod

Answer:

B

Explanation:

Nonmetal is better insulator than metals

Answer:

B

Explanation:

Just took the quiz.

Answer:

KE = KE (incidental) - KE of emitted photons

or KE = h * f - Wf

So   h * f = KE + Wf = 1.2 + 1.88 = 3.08    incident energy

If you double the frequency then h * f = 6.16

KE = 6.16 - 1.2 = 4.96 eV

Answer:

25.3m

Explanation:

Given parameters:

Final velocity   =  4.5m/s

Acceleration  = 0.4m/s²  

Time taken  = 12s

Unknown:

Distance she moved down hill  = ?

Solution:

To solve this problem, we use the expression below:

              v² = u² + 2aS

v is the final velocity

u is the initial velocity

a is the acceleration

S is the distance

             4.5² = 0²  + (2 x 0.4 x S)

              20.25  = 0.8S

                S = 25.3m

Answer:

In ideal case, when no resistive forces are present then both the balls will reach the ground simultaneously. This is because acceleration due to gravity is independent of mass of the falling object. i.e. g = GM/R² where G = 6.67×10²³ Nm²/kg², M = mass of earth and R is radius of earth.

Let us assume that both are metallic balls. In such case, we have to take into account the magnetic field of earth (which will give rise to eddy currents, and these eddy currents will be more, if surface area will be more) and viscous drag of air ( viscous drag is proportional to radius of falling ball), then bigger ball will take slightly more time than the smaller ball.

Explanation:

In ideal case, when no resistive forces are present then both the balls will reach the ground simultaneously. This is because acceleration due to gravity is independent of mass of the falling object. i.e. g = GM/R² where G = 6.67×10²³ Nm²/kg², M = mass of earth and R is radius of earth.

Let us assume that both are metallic balls. In such case, we have to take into account the magnetic field of earth (which will give rise to eddy currents, and these eddy currents will be more, if surface area will be more) and viscous drag of air ( viscous drag is proportional to radius of falling ball), then bigger ball will take slightly more time than the smaller ball.