A heavy piece of hanging sculpture is suspended by a 90 cm long 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 95 Hz.What is the mass of the sculpture?

Answer:

Neseciti puntos oara mi tarea y mad ni entiendo lo wue dices

Actual specific heat capacity would be less than the computed experimental specific heat capacity.

The experiment's measurement of water's specific heat capacity, c, is higher than the accepted value for c. This is because some heat was lost to the surroundings, causing the experimental temperature rise to be q smaller than the projected temperature rise.

The quantity of heat energy needed to raise the temperature of 1 kg of a material by 1 K is measured as specific heat capacity. It is crucial because it will show how much energy will be needed to raise or lower an object's temperature by a certain amount for a certain mass.

In this experiment, the primary source of error is heat loss by conduction. The conservation of energy serves as the theoretical foundation for this particular heat test. Energy can be in the form of heat, and in this instance, heat will be transported from the sample to the water.

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Answer:

F=Gm1m2 / r2

Explanation:

F = force

G = gravitational constant

m_1 = mass of object 1

m_2 = mass of object 2

r = distance between centres of the masses

answer is in the attachment

☆...hope this helps...☆

_♡_mashi_♡_

To determine the pressure at a given depth within a fluid, you can use the hydrostatic pressure formula:

\(P = p_0 + pgh\)

The pressure at a distance of 40 cm below the surface of the liquid is approximately 111,325 Pascal (Pa).

where:

P is the pressure at the given depth,

P₀ is the pressure at the surface of the fluid (usually atmospheric pressure),

ρ is the density of the fluid,

g is the acceleration due to gravity, and

h is the depth below the surface.

Given:

Density (ρ) = 2500 kg/m³

Acceleration due to gravity (g) = 10 m/s²

Depth (h) = 40 cm = 0.4 m

Assuming the pressure at the surface (P₀) is atmospheric pressure, we can calculate the pressure at the given depth as follows:

\(P = p_0 + pgh\)

P = P₀ + (2500 kg/m³)(10 m/s²)(0.4 m)

Since we are assuming atmospheric pressure at the surface, P₀ is approximately 1 atmosphere, which is equivalent to 101,325 Pa.

P = 101,325 Pa + (2500 kg/m³)(10 m/s²)(0.4 m)

P ≈ 101,325 Pa + 10,000 Pa

P ≈ 111,325 Pa.

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Answer:

1. F= 66 N

2. M= 40 kg

3. A= 5.45454545 repeating

Explanation:

The equilibrant force is equal in magnitude and opposite in direction to the resultant force.

Since the resultant force is 10 N in the positive y axis direction (North), the equilibrant force is 10 N in the negative y axis direction (South). An equilibrant force is a force that can balance or counteract the effect of other forces acting on an object.

It has the same magnitude as the resultant force, but it acts in the opposite direction, resulting in a state of equilibrium where the net force acting on the object is zero.

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The electric power  lost in the transmission  is  40 MW.

The rate at which electrical energy is carried over an electric circuit is known as electric power. The watt, or one joule per second, is the SI unit of power.

Transmission lines enable the efficient delivery of electric power across great distances for uses including motion, lighting, and heating.

Current through the transmission line = 20 kilo ampere

Resistance of the transmission line = 0.1 Ω

The power  lost in the transmission = (current)² × resistance

= (20 ka)² × (0.1 Ω)

= 40 MW.

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Explanation:

Let A and B be two objects of mass 'm' each

let A have volume V1 and B have volume V2 where V1 > V2

we know that density = mass/volume

here density is inversely proportional to volume

here density of A = m/V1

and density of B = m/V2

since V1 > V2

on comparing,

m/V1 < m/V2

i.e., density of B > density of A

Answer:

The Sun derives all its energy from a fusion cycle. In that process, tiny hydrogen molecules combine into a continuous proton-proton chain to create larger helium nuclei. The above figure illustrates the fusion of hydrogen into helium.

Explanation:

Hope this helps.

Answer:

nuclear fusion

Explanation:

In this process, small hydrogen molecules fuse together to form bigger helium nuclei in a continuous proton-proton chain.

stop your hand so it doesn't hurt as much and if u stop your hand it would make more of an impact because if your hand bounces it means not enough strength so she should stop her hand

The average speed and average velocity, of the teacher is 0.0556 m/s and 0 m/s.

Speed is a rate of change of distance with respect to time. i.e. v=dx÷dt. Speed can also be defined as distance over time i.e. speed= distance ÷ time it is denoted by v and its SI unit is m/s. it is a scalar quantity. Average velocity is the total displacement divided by the total time

In this problem,

Total time = 9:30 - 8:00  = 1.5 hours = 5400 seconds

The teacher makes 10 rounds along the 15 m wall during this time, which means he covers a total distance of:

Total distance = 2 × 10 × 15 m = 300 m

To find the average speed, we divide the total distance by the total time:

Average speed = Total distance / Total time

= 300 m / 5400 s

= 0.0556 m/s

Therefore, the average speed of the teacher is 0.0556 m/s.

the average velocity is the total displacement divided by the total time

Average velocity = Total displacement / Total time

= 0 / 5400 s

= 0 m/s

Therefore, the average velocity of the teacher is 0 m/s.

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Answer:

Explanation:

One

All three statements are saying exactly the same thing.

1. one direction forces = opposite direction forces. Note forces have direction. Always remember that forces have direction and you must always say what that direction is.

2. Two is saying the same thing as one. It is just that 2 is more specific about what the direction is. Clockwise is different from anti clockwise.

3. moments are forces and distances. Forces always have direction. Distances sometimes do not. At your level of study, I don't think it does. Later on, you will learn the word displacement which always has direction and that direction must be stated.

Answer D.

15 We are told to answer just 1 or 2 questions from the same student's posting. There are 4 here, so I'm going to give you just brief answers.

You should realize by now that a loaded bus has it's center of gravity raised. The answer is B

16 A is true.

Technically anything to do with turning is a torque.

D is also true.

C is better worded than B. I would pick B as the odd one out.

17

This is rotating so they must be on the same side of the pivot point. The moments add.

20*3 + 10*2 = 60 + 20 = 80  Newton Meters. Notice C has the right numbers associated with it, but the distance is divided into a Newton. Wrong answer.

In this series of questions, moments are defined as Force * Distance.

The moon generates larger tidal forces than the sun due to its closer proximity to Earth and its relatively smaller size compared to the sun.

Tidal forces are caused by the gravitational pull exerted by celestial bodies on Earth's oceans. The gravitational force is directly proportional to the mass of the object and inversely proportional to the square of the distance between the objects. Although the sun is significantly more massive than the moon, its distance from Earth is much greater. The moon, being closer, exerts a stronger gravitational force on Earth's oceans, leading to larger tidal effects. The sun's influence on tides is also significant but relatively smaller compared to the moon. It is the combined effect of both the moon and the sun that contributes to the variations in tidal patterns observed on Earth. However, since the moon is closer and has a greater influence, it generates larger tidal forces overall.

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The work done by the weight lifter is 7260 J.

The weight lifter does 7,260 J of work when lifting the 390-N weights. This is calculated by multiplying the force (390 N) by the distance (1.80 m) that the weights were moved.

W = Fd, where W is work, F is force, and d is distance.

The weight lifter must apply a force to lift the weights. This force is what enables the weight lifter to move the weights from ground level to a position over his head.

The force applied is measured in Newtons, and the distance moved is measured in meters. The work done is measured in joules (J).

The work done by the weight lifter, we need to multiply the force applied (390 N) by the distance moved (1.80 m). So, W = Fd, W = 390 N x 1.80 m, and W = 7,260 J.

This is the work done by the weight lifter in lifting the 390-N weights from ground level to a position over his head.

It is important to note that the work done is the same whether the weight lifter moves the weights at a constant speed or at varying speeds.

The only factor that affects the amount of work done is the amount of force applied and the distance the weights were moved.

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Answer:

A.) Oxidation

Explanation:

:p

Hydrogen reacts with oxygen, hydrogen loses electrons. The term

applies to what happens to hydrogen in this reaction is

A. Oxidation

Oxidation is a process where a substance: Loses one or more electrons or gains an oxygen atom or we can say that oxidation is a process which involves the addition of oxygen or any electronegative element or the removal of hydrogen or any electropositive element.

Reduction is the gain of electrons or reduction is a process which involves the addition of hydrogen or any electropositive element or the removal of oxygen or any electronegative element.

A synthesis reaction is a type of reaction in which multiple reactants combine to form a single product. Synthesis reactions release energy in the form of heat and light, so they are exothermic.  

correct option is A. Oxidation

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There are 24 time zones on Earth separated by 15 degrees of longitude.

Each time zone represents a specific region where the local time is the same.

These time zones help coordinate activities and schedules across different parts of the world.

In conclusion, the Earth is divided into 24 time zones, each separated by 15 degrees of longitude.

Every time the earth rotates within a 24-hour period, it covers a 360° arc. According to this, it rotates 15° in an hour.

Thus, although there are few anomalies that take into account political boundaries, time zones have been divided into 24 equally spaced time zones for convenience's sake.

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Answer:

W=F.dcos angle

w=42.2 x8.15 x cos40

w=343.93× cos 40

W=343.93 x 0.76

W=261.38 J

Work done on the object will be 264.83 J

Work done  is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.

given :

F = 42.2 N

let , x  = 40°

horizontal distance (s) = 8.15 m

Work done = F s cos (x)

                  = F * s * cos (x)

                  = 42.2 * 8.15 * cos 40° = .766

                  =  343.93 * 0.77

                  = 264.83 J

Work done on the object will be 264.83 J

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Answer:

1. 75 speed, 2. 90 second = 1hr. 30 second. 3. 125 = 1hr 60 seconds 4.

Answer:30s

Explanation:

Answer:

The volume of water displaced by the raft is 0.233 m³

Explanation:

The question relates to Archimedes' principle which states that the buoyant force experienced by an object immersed in a fluid is equal to the weight of (the force of gravity on) the displaced fluid

The given parameters are;

The combined mass of the person and the raft, m = 233 kg

The liquid on which the raft is located = Water

The density of water, \(\rho _{water}\) = 1000 kg/m³

Weight = Mass, m × g

Where;

m = The mass of the object

g = The acceleration due to gravity = 9.8 m/s²

Given that the raft is on the surface of the water (floating), the buoyant force is equal to the combined weight of the person and the raft = 233 kg

The combined weight of the person and the raft, \(W_{combined}\) = 233 kg × 9.8 m/s² = 2,283.4 N

Therefore;

The buoyant force = 2,283.4 N = The weight of the water displaced

The mass of the water displaced, \(m_{water}\), = 2,283.4 N/(9.8 m/s²) = 233 kg

Density = Mass/Volume

The volume of water displaced by the raft = The mass of the water displaced/(The density of the water) = 233 kg/(1,000 kg/m³) = 0.233 m³.

Answer:

the volume displaced by the raft = 0.233 m3

Explanation:

correct for Acellus

Answer:

what are semimoval joints

When blowing across the top of an empty bottle, a relatively loud sound can be created because a standing wave occurs in the bottle. A standing wave is formed when a wave interferes with its reflected wave, creating points of constructive and destructive interference. The resonance of the standing wave amplifies the sound.

As the bottle is filled with water, the pitch of the sound becomes higher. This happens due to the change in the effective length of the air column inside the bottle. When the bottle is empty, the entire length of the bottle is available for the formation of the standing wave. This means that the air column inside the bottle is longer, resulting in a lower pitch.

As water is gradually poured into the bottle, the effective length of the air column decreases. This happens because the water occupies space inside the bottle, effectively reducing the available length for the standing wave. With a shorter effective length, the wavelength of the standing wave decreases.

According to the wave equation (speed = frequency x wavelength), if the speed of sound remains constant, a shorter wavelength leads to a higher frequency and, therefore, a higher pitch. By filling the bottle with water, we are effectively shortening the length of the air column and increasing the frequency of the standing wave, resulting in a higher-pitched sound.

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Which receives the most solar radiation?

A the polar zones

B the oceans

C the tempetra zones

D the equator ✅

Relation between velocity and time

\(\\ \sf\Rrightarrow Velocity=\dfrac{Displacement}{Time}\)

Or

\(\\ \sf\Rrightarrow \vec{v}=\dfrac{dx}{dt}\)

Now

\(\\ \sf\Rrightarrow v\propto \dfrac{1}{t}\)

Answer:

I guess rinse it out and wipe it up. It's not a hazardous substance so there's nothing to worry about.

These substances should be cleaned up rinsing the area or removing the compounds with a cloth and dispose of it in the trash.

Sugar is a chemical compound also called sucrose. Its chemical formula is C12H22O11. This compound is normally used to sweeten foods.

On the other hand, common salt is a chemical compound. Its chemical formula is NaCl. This compound is normally used to give food a salty taste.

According to the above, in which a student spilled some salt and sugar in the sink and does not know how to clean it, it can be concluded that the proper way to clean these chemical compounds is by rinsing the area or removing the compounds with a cloth and dispose of it in the trash because neither of them represents biological, chemical or physical risks and a specialized treatment is not required for them.

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Heat naturally flows from an object that has a high temperature to an object that has a low temperature. Heat can be made to flow in the reverse direction if temperature  is done. A machine can never have an efficiency of fuel . This means that heat energy can never be fully converted into mechanical  energy.

What is temperature ?

The movement of these particles likewise increases with rising temperature. A thermometer or a calorimeter are used to measure temperature.

What is kinetic energy ?

When an item undergoes work—the transfer of energy—by being subjected to a net force, it accelerates and acquires kinetic energy.

Therefore,Heat naturally flows from an object that has a high temperature to an object that has a low temperature. Heat can be made to flow in the reverse direction if temperature  is done. A machine can never have an efficiency of fuel . This means that heat energy can never be fully converted into mechanical  energy.

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Answer: You could tell if you made an error in your calculations by repeating the steps.

Speed of light is the fastest/maximum in vacuum which is equal to 3 × 10^8 m/s, therefore speed of light through any material equal to 4 × 10^8 m/s is physically and theoretically impossible and therefore incorrect.

Explanation:

Answer: (a) The velocity of the ball at its highest point is 10.12 m/s

              (b) The height that the ball goes is 1.13 m.

Mass of ball, m = 0.48 kg

Initial velocity, u = 8.8 m/s

Initial angle, θ = 36°

Using the principle of conservation of energy, the final velocity at the highest point can be found. The potential energy of the ball is converted into kinetic energy at its highest point, where the ball will stop momentarily. Then, we know that the total energy at the top will be equal to the potential energy at the beginning. That is, Initial Potential Energy + Initial Kinetic Energy = Final Potential Energy∴

mgh + 1/2mu² = mgh(max) where h(max) is the maximum height the ball attains. At this point, the kinetic energy will be zero. Therefore,0.5mv² + mgh = mgh(max). Since the kinetic energy of the ball at the top is zero, the total energy at the top of the projectile’s trajectory is the potential energy at the start of the trajectory, which is mgh.∴ v = √(2gh).

This is the velocity at the maximum height.

(a) Speed at its highest point:

Initial velocity of ball, u = 8.8 m/s

Angle made with horizontal, θ = 36°

The vertical component of velocity, v_y = usinθv_y = 8.8 sin 36°v_y = 5.0 m/s

Now using the formula, v = √(u² + v_y²)v = √(8.8² + 5.0²)v = √(77.44 + 25)v = √102.44v = 10.12 m/s

Therefore, the velocity of the ball at its highest point is 10.12 m/s

(b) How high does it go: lets calculate the potential energy at the initial position. Potential energy, Ep = mgh

Ep = 0.48 * 9.8 * 0Ep = 0 J. The total energy at the top will be equal to the potential energy at the beginning. That is, Initial Potential Energy + Initial Kinetic Energy = Final Potential Energy∴ mgh + 1/2mu² = mgh(max). Substituting the values,0.48*9.8*h(max) + 0.5*0.48*8.8² = 0.48*9.8*0hmax = (0.5*0.48*8.8²)/(0.48*9.8)h(max) = 1.13 m.

Therefore, the height that the ball goes is 1.13 m.

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We need to add 1,634,320 J of heat energy to the water to bring it from 22 °C to 100 °C.

What  is Heat Energy?

Heat energy is the form of energy that is transferred between two objects or systems as a result of a temperature difference between them. It is a form of internal energy that flows spontaneously from hotter to colder matter, and it is measured in joules (J) or calories (cal). Heat energy can be transferred through three main methods: conduction, convection, and radiation.

To calculate the heat energy required to heat up the water in the soup pot, we can use the formula:

Q = mcΔT

where Q is the heat energy, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.

Given:

m = 5000 g

ΔT = (100 °C - 22 °C) = 78 °C

c = 4.184 J/g·°C (specific heat capacity of water)

Q = (5000 g) × (4.184 J/g·°C) × (78 °C)

Q = 1,634,320 J

Therefore, we need to add 1,634,320 J of heat energy to the water to bring it from 22 °C to 100 °C.

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The concept of a light clock is an important tool in understanding special relativity.

The clock consists of two mirrors separated by a distance L, with a beam of light bouncing back and forth between them. By allowing a small amount of light to escape through a partially silvered mirror and hitting a detector, the clock emits evenly spaced ticks that are directly related to the round-trip time of the light.

According to the postulates of special relativity, the laws of physics are the same in any inertial reference frame, and the speed of light (c) is constant when measured with respect to any coordinate system moving at a constant velocity. The light clock is based on the propagation time of light between mirrors spaced a distance L apart, and it emits evenly spaced "ticks" as light bounces back and forth between the mirrors. These principles help us deduce the rate at which the light clock ticks, both when it moves relative to us and when it is at rest.

Your question is incomplete, but most probably your full question can be seen in the Attachment.

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