An experiment that produces waves on a string is analyzed, and the experimental value for the wave speed is found to be 66 m/s. If the accepted value for the wave speed is 63 m/s, what is the percent error?

a) Magnitude of force is 5.37N

b) Angle of force is - 37.88°

In physics, we define a force is an influence that can change the motion of object. A force can cause an object with mass to change to accelerate.

Given force from above is 5.9N

∑Fₓ = F₁ₓ + F₂ₓ+F₃ₓ = 0

F₂ cos 44° + Fₓ = 0

Fₓ = - 5.9 cos44°

= - 4.24  N

Given force that acts downward as 7.4N

∑Fy= Fy1+ Fy2 +Fy3 =0

Fy+ 5.9 sin 44° - 7.4= 0

F =  3.30 N

F =√Fₓ² +Fy²

=  5.37 N

b)  angle of force= tan⁻¹ (3.30/-4.24)

= - 37.88°

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Different units of power given in the question is:  joule/sec (J/s), kilowatt (kW), watt (W),  megawatt (MW), kilowatt x hr / year (kWh / yr), gigawatt (GW).

Different units of energy given in the question is: calorie (cal),  kilojoule (kJ), kilowatt x hour (kWh),  kilocalorie (kcal),  joule (J).

Energy has the capacity to bring about change, such as motion. To execute tasks (like lifting a box), energy is needed. A battery can store a certain amount of energy, just as a certain quantity of fuel, such as food, can.

The joule is the base unit of energy. This indicates that no matter how quickly a box is picked up, a job like lifting it requires a specific number of joules.

Power is the ratio of the amount of energy utilized to the time it took to use it. It measures how quickly energy is used or transported. Its watt measurement equals one joule of energy used every second.

Hence, units of energy is equal to products of unit of time and unit of power and they can easily interchange.

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The formula for linear momentum is p = mv. The relationship between momentum and an object's mass and speed is straightforward. Therefore, an object's momentum increases with increasing mass or velocity. The vector of momentum p has the same direction as the vector of velocity v.

Linear Momentum:

The product of an object's mass, m, and its velocity, v, is the vector quantity known as linear momentum. It is represented by the letter "p," which is also used to denote momentum. Please be aware that the body's momentum always points in the same direction as its vector of velocity. Because it is a conserved quantity, a system's overall momentum is always constant. kg/s is the unit of linear momentum.

Complete question:

If the mass and the momentum of an object are given, how do we find the velocity? ​

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a) The  magnitude of force needed  is 29.49 N.

b)  The magnitude of force needed to push the block with a=2 m-s⁻² is 49.49 N.

Friction is a form of relative force that works as resistance between two bodies that are in touch with one another. In other words, there is a force that opposes the relative motion of two bodies when they are in contact.

Given parameters:

Mass of the block; m = 10 kg.

Slope of the plan; θ = 37°.

Coefficient of friction, μ = 0.5.

Taking acceleration of gravity; g = 9.8 m/s².

a)Hence, magnitude of force needed = friction force = μ× normal force

= μmgsin37°

= 0.5 × 10 × 9.8 × sin 37°

= 29.49 N.

b) The magnitude of force needed to push the block with a=2 m-s⁻² is = friction force + ma

= 29.49 N +10×2 N

= 49.49 N.

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It has to overcome friction and air resistance in order for your balloon car to start to move

What is a balloon car?

For balloon-powered car, the contracting balloon pushes the air in the balloon backwards. That means the air in the balloon is pushing balloon forwards. The balloon is joined to car, so the car rolls. The motion is nothing to do with pushing on the air behind car.

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Do you notice a pattern in the Total Energy column for all the spots where the skater turns and returns in the opposite direction? Its highest value at those locations.

Various types of energy are present. These include, for instance, energy from light, heat, mechanical motion, gravity, electricity, sound, chemicals, nuclear or atomic energy, and so forth. It is possible to alter or convert one form into another.

The main energy sources in the environment are fossil fuels like coal, oil, natural gas, uranium, and biomass. With the exception of biomass, none of the principal fuel sources are renewable. Renewable energy sources including geothermal energy, the sun's rays, the wind's movement, and the water's flow are also considered primary sources.

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0.6 m long would a pipe, open at both ends, need to be to play the same fundamental frequency .

Frequency, in physics, the number of waves passing through a fixed point in a unit of time. Also, the number of cycles or oscillations per unit time experienced by an object in periodic motion. An object in periodic motion is said to undergo a cycle or oscillation after returning to its original state through a series of events or positions. See also angular velocity. A simple harmonious movement.

The period or time interval required to complete a cycle or oscillation is 1/2 second, then the frequency is 2/second. If the period is 1/100 hour, the frequency is 100 per hour. In general, frequency is the reciprocal of duration or time interval. That is, frequency = 1/duration = 1/(time interval). The frequency of the moon's orbit around the earth is just over 12 cycles per year. His A string on the violin has a frequency of 440 vibrations or cycles per second.

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If the same amount of energy was applied to an equal mass of water at 20 °C, its final temperature is 100 °C

q = m C ΔT

ΔT = T - To

q = Heat quantity

m = Mass

C = Specific heat capacity

ΔT = Change in temperature

T = Final temperature

To = Initial temperature

q = 1680 KJ

m = 5 kg

C = 4200 J / kg °C

To = 20 °C

q = m C ( T - To )

1680000 = 5 * 4200 ( T - 20 )

T - 20 = 80

T = 100 °C

Therefore, the final temperature would be 100 °C

The given question is incomplete. The complete question is:

1680 KJ is applied to 5 kg of water. If the same amount of energy was applied to an equal mass of water at 20 °C, what would its final temperature be? The specific heat capacity of water is 4200 J/kg °C.

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Answer:

They have the same acceleration.

Explanation:

50km/h to 60km/h = 10km/h

0km/h to 10 km/h = 10km/h

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Answer:

they have a same acceleration

Explanation:

50km/h to 60 km/h=10km/h

0km/h to 60 km/h=10km/h

Answer:

Explanation:

Which of the following is not true for a load-extension graph up to the limit of proportionality?

a) It is a straight line   (TRUE)

(See graph)

b) It can cross the y-axis at any point (FALSE)

c) Extension ÷ load always equals the same value   (TRUE)

 ΔL / P = 1/k  (k - stiffness)

d) If the load is doubled, then the extension is doubled  

P = k·ΔL

2·P = k·(2·ΔL)

here

u = distance from object and mirror

v = length of image

f = focal distance

m = magnification

The heaviest liquid is mercury. In order to equalize the air pressure, it only climbs 76 cm. Water will rise to a 13.6 because it is 13.6 times lighter than mercury. By a factor of 13.6, mercury is 13.6 times denser than water.

Therefore, the barometer's height would be 13.6 times higher if water were employed in place of mercury. Since water expands when it freezes, the glass tube would be broken.

Because of its high density, mercury is frequently employed in barometers, allowing for a column height that is appropriate for measuring atmospheric pressure. For example, a mercury barometer would need to be 13.6 times taller than a water barometer to measure the same change in pressure.

This is the primary justification for using mercury in thermometers. Mercury will provide accurate readings in comparison to water since it lacks the condensation property that water possesses. Mercury can be used to measure both negative and positive temperatures, whereas water cannot be used to measure either.

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Net force at highest position is force due to gravity= m*g

net acceleration of ball at highest point is = g towards ground

Force can be understood as the push or pull on an object with mass that  causes it to change its velocity. Force is external and is capable of changing a body's state of rest or motion.

When a person kicks the ball with initial force Fo,  then energy associated with this force is transferred to the ball in the form of momentum change and hence velocity of ball is non zero.

In this case impulse imparted by the force is equal to change in momentum of the ball.

The only force acting on the ball at his highest is is the force due to gravity.

Net force on ball = m *g

a = F/m

= m*g/m=g

Net force at highest position is force due to gravity= m*g

net acceleration of ball at highest point is = g towards ground

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The magnitude of the gravitational torque 6.47 Nm.

Gravitational torque is performed at the middle of the drum that is intersecting the axis of rotation (i.e. r = zero), inflicting a fee of torque 0. The route of the net torque across the center of mass is difficult to determine directly. Gravity offers no torque, and friction and ordinary forces supply opposing torques.

The center of mass of the rod

   = R = 2/2

    = 1

So torque τ = r × F

                 τ = r F

Torque at point P = τ p

                          = r × m g

                               τp = ( 1 - 0.13 ) × 2 × 9.8

                                    =17.052 N m

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The energy in megatons would have required to accelerate a spaceship with a mass of one million will be equal to  5.48 × 10²³ × 2.39 × 10⁻¹⁰ tons.

The speed at which relativistic effects are significant to the intended accuracy of the phenomenon being viewed is known as relativistic speed. Relativistic effects are the differences between data determined by models that take relativity into consideration and those that do not. Velocity, rapidity, and celerity—which are the right speed related synonyms.

From the given information in the question,

E = (γ-1)mc² and,

γ = 1/√(1-(v²/c²))

For non-relativistic speed, v<<c or v/c<<1 then this factor is equal to 1.

m = 1 million kg or 10⁶ kg.

v =0.99 c.

[tex]E=[(\frac{1}{\sqrt{1-(0.99c)^2/c^2)} } )-1](10^6)(3*10^6\ m/s^2)^2[/tex]

E = 54.81 × 10²² J = 5.48 × 10²³ J

Let's calculate in terms of tons,

1 J = 2.39 × 10⁻¹⁰ tons

Therefore,

5.48 10²³ J = 5.48 × 10²³ × 2.39 × 10⁻¹⁰ tons.

This is a tremendous quantity of energy and is completely unattainable. As a result, we might conclude that moving at such relativistic speeds is extremely challenging.

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Pushing on a car will not change cars mechanical energy because  it does not create mechanical energy.

Mechanical energy is the energy of either an item in motion or the energy that is saved in object via their position. Mechanical strength is also a driving force of renewable strength.

There are types of mechanical energy:  Potential energy and Kinetic energy. Combined, the sum of the 2 is called the overall mechanical power. Mechanical power is countless in nature.

Advantages of Mechanical energy are that this energy source does not not run out and can also be transformed into different types of power. Disadvantages of mechanical energy is that the machines that permit you to have the benefits of mechanical energy can create protection issues and also grow to be worn out and costly to fix.

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The magnitude of the acceleration of the box if you push on the box with a constant force F = 125.0 N that is parallel to the ramp surface and directed up the ramp is 9.96 m / s²

N = m g cos θ

N = 10.5 * 9.8 * cos 50°

N = 65.86 N

∑ [tex]F_{x}[/tex] = m a

F - f = m a

F - μ N = m a

125 - ( 0.31 * 65.86 ) = 10.5 * a

125 - 20.42 = 10.5 a

a = 104.58 / 10.5

a = 9.96 m / s²

To just start the crate to move,

Fs = μs m g

Fs = 0.76 * 60 * 9.8

Fs = 446.88 N

To slide the crate across the dock at a constant speed,

F = μk m g

F = 0.41 * 60 * 9.8

F = 241.1 N

Therefore,

1 ) a = 9.96 m / s²

2 ) Fs = 446.88 N ; F = 241.1 N

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Answer:

A.Running 50 m along a straight track

Explanation: Running 50 m along a straight track is a real-world example of linear motion.Linear motion means moving along a (straight) line, a direct and straight line from point A to point B.All the other proposed answers (A,B,C) involve a curve.  The two rock examples will curve due to gravity and running around a curve on a track isn't a straight line.I hope that helps you understanding the principle of linear motion.

Answer:

Explanation:

There are 36 ounces of yellow paint.

Both blue and yellow paint reflect intermediate wavelengths. Therefore, if you mix blue and yellow paint the mixture will appear green. I have found that blues and greens produce predominantly cyan or turquoise tones but mixing colors is never the right thing to do with darker or lighter grays.

Mixing blue and green makes him a tertiary color on the color wheel, teal. Blue-green is similar to turquoise or the color of the sea. This is one of the most common and popular tertiary colors. For a light aqua color mix cobalt blue with white. The primary colors are red blue and yellow. Primary colors cannot be mixed with other colors. They are the source of all other colors.

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Answer:

Velocity is based on distance.

Explanation:

Speed-is the time which an object is moving.

Velocity-is the direction of an object's movement.

Answer:

Velocity includes direction.

Explanation:

speed is only the rate which an object moves while velocity is the rate and directions which an object moves.

The correct answer is net displacement of a point on the rim of the blade during the deceleration is 10.0 in or 0.254 m 10.0 i n o r 0.254 magnitude .

Magnitude in physics is simply described as "distance or quantity." It shows the size or direction that an object moves in either an absolute or relative sense. It is a way of expressing something's size or scope. Magnitude in physics often describes a length or a size. A scalar is used to indicate a force's magnitude, which is the amount to which the body it is acting on will be accelerated by the force (a single number). The force's strength can also be considered in terms of its magnitude. An attribute of a mathematical object that indicates whether it is bigger or smaller than other things of the same kind is its magnitude or size.

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Water will take a time of 71.2 seconds to raise the temperature of the water from 15° C to 25° C.

The specific heat capacity can be demonstrated as the quantity of heat needed to increase the temperature in one unit of material by one degree celcius.

Whenever the energy will be lost or absorbed the temperature of the material will be changed:

Q = mCΔT

Given, the mass of the water, m = 114 Kg

The change in the temperature = 25 - 15= 10 °C

The specific heat capacity of the water, C =4.184 J/g°C

The time can be calculated for the given change in temperatures as:

P × t = m×C ×ΔT

67 W × t = 114g × (4.184 J/g°C) × 10 °C

t = 71.19 sec

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Octane is a compound since it is composed of more than two elements of the periodic table.

Octane is a linear hydrocarbon made up of hydrogen and carbon molecules, which makes it an organic molecule. Octane will be part of the composition of gasoline. The quality of the gasoline is measured by the octane number, the more octane there is, the higher the octane number and the better the quality of the gasoline.

It is a compound since it is said to be if it is made up of more than two elements from the periodic table. The elements of the compound cannot be separated by physical processes such as filtration or decantation, but only by chemical processes.

Therefore, we can confirm that octane is a compound since it is composed of more than two elements of the periodic table.

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The resultant velocity of the golf ball is 18.03 m/s

What is Resultant velocity?

An object's total vector velocity is the sum of its component vector velocities. The scalar product of an object's mass and acceleration vector equals the sum of the vector forces acting on it. If indeed the two objects stick together again after impact, divide the total momentum even by sum of the masses. You will then be given the two objects' resultant velocity as a result. In the aforementioned example, 50 would be divided by the total mass of the masses, which really is 10, yielding a speed of 5 metres per second.

Horizontal velocity= 10 m/s

Vertical velocity= 15 m/s

Resultant velocity= [tex]\sqrt{100+225}[/tex] = [tex]\sqrt{325}[/tex] = 18.03 m/s

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All metabolic process requires the transmission of energy. Because total energy is conserved, there will be no energy loss or gain in a system, and to maintain this balance, energy will be transferred from a lower energy location to a higher energy place.

Thermal energy is energy in the form of heat that may be transferred from one component to the other in the same way that any other energy type can.

When energy is conserved in a system, there is no net gain or loss of energy. As a result, energy lost in one area flows to the other sections. Any energy form can go from a low-intensity area to a high-intensity area.

When our hands chill, we may warm them up by rubbing them on our legs. Where heat energy is transmitted from our legs to our hands in order to warm them. Thus, the temperature is delivered to a cooler component from a hot part in this case.

This is an example of heat transfer, thus our legs cool down because part of their temperature is transferred to our hands, but our body's total temperature remains balanced.

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The net force acting on the object will be 244 in downward direction

Forces acting on a freely falling body will be

1) Force due to gravity ( in downward direction ) or gravitational force

2) Force due to air resistance ( in upward direction )

Net force =  Force due to gravity  - Force due to air resistance

                = - mg + Force due to air resistance

                = - 30 * 9.8 + 50

                = - 294 + 50 = -244 N

correct answer is

A) -244 N

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The magnitude of the centripetal acceleration of the piece of clay on the wheel will be  4.51 [tex]m/s^{2}[/tex]

When an object  is moving in a circle , it experiences an acceleration towards the center of the circle is known as Centripetal acceleration

centripetal acceleration = radius * ([tex]omega^{2}[/tex])

                                        = 0.22 * 20.5

                                        = 4.51 [tex]m/s^{2}[/tex]

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The magnitude of the acceleration of the system is equal to 1.96 m/s². The tension in the string is equal to 4.70 N.

What is Newton's second law of motion?

Newton's 2nd law of motion described the force acting on an object as equal to mass (m) times the acceleration (a) of that object.

The mathematical relation can be shown as follows:

F = ma

Given, the mass, m = 0.40 Kg  and the mass M = 0.60 Kg

From newton's second law:  Mg - T = Ma            ...........(1)

Similarly, T - mg =ma                                    ...............(2)

By adding both equations, we get:

(M - m)g = (M + a)a

(0.60 - 0.40) (9.8) = (0.60 + 0.40) a

a = 1.96 m/s²

The tension in the string can be determined as:

Mg - T = Ma

(0.60) (9.8) - T = (0.60) × 1.96

T = 4.70 N

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Static friction is 0 N ≤ [tex]f_{max}[/tex] ≤ 920.612N

Maximum static friction is 920.612N

Kinetic friction is 709.324N

Kinetic and Static Friction The friction that exists between two systems when they are in touch and immobile with respect to one another is known as static friction. Kinetic friction is the friction that occurs when two systems are in contact and moving in relation to one another.

Aluminum and steel have a static friction coefficient of [tex]\mu_{k}[/tex] =0.47  and a kinetic friction coefficient of [tex]\mu_{s}[/tex] = 0.61 respectively.

Given.

Mass = 154 kg

The weight of the sculpture made of aluminum will exert a normal force equal to that of the steel platform. This is,

N = mg

The static friction is now calculated by multiplying the normal force by the coefficient of static friction. From 0 to limiting friction, the static friction ranges.

The maximum static friction that a body can experience in order to prevent motion is known as the limiting friction.

The limiting friction value, often known as the maximum static friction, is given as:

[tex]f_{max} = \mu_{s} N =\mu_{s} mg[/tex] = 0.61 ×154×9.8 = 920.612N.

Static friction is defined as follows:

0 N ≤ [tex]f_{max}[/tex] ≤ 920.612N.

The frictional force that affects a body as it is moving while being acted upon by forces is known as kinetic friction. As a result, the product of normal force and the coefficient of kinetic friction is kinetic friction. Kinetic friction is a persistent force that opposes.

So, the formula for kinetic friction is:

[tex]f_{k}[/tex] = [tex]\mu_{k}[/tex]N

[tex]f_{k}[/tex] = [tex]\mu_{k}[/tex]mg

[tex]f_{k}[/tex] = 0.47×154×9.8

[tex]f_{k}[/tex] = 709.324N.

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When E depends on the strength of the magnetic field and velocity, the strength of the electric field must also be the same to maintain a straight-line motion without deviating from it.

The energy that an object has because it is moving is determined by the initial energy in physics. It is defined as the amount of effort required to accelerate an object of known weight from resting to its specified velocity. The body keeps its kinetic energy after gaining it during acceleration, barring speed changes. When slowing from its current pace to a point of rest, the body expends the same amount of energy.

(a)

The magnetic field is on the page and the image is attached.

(b)

The magnetic force must be balanced with force due to the electric Field.

Eq = qvB sinθ

Eq = qvB sin 90

E =vB

(c)

The kinetic energy of the particle with velocity v and mass m,

KE = 1/2 mv²

The proton's kinetic energy is 1836 times more than that of the electron since it is more heavy than it is.

The shift in kinetic energy will then be equal to zero if there is no increase in velocity between before and after the electric field is applied.

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