2. Box A has 2x the mass of Box B. Compare the inertia of the 2 bodies.

The mass will be moving at 14.3 m/s when it reaches the equilibrium position.

To determine the speed of the mass when it reaches the equilibrium position, we need to consider the conservation of mechanical energy, which includes both the spring potential energy and the gravitational potential energy.

The total mechanical energy (E) of the system is the sum of the potential energy and the kinetic energy:

E = PE (potential energy) + KE (kinetic energy)

At the equilibrium position, all the potential energy is converted into kinetic energy, so the total mechanical energy is entirely in the form of kinetic energy.

The potential energy stored in the spring (PE_spring) is given by Hooke's Law:

PE_spring = (1/2) * k * \(x^{2}\)

Where k is the spring constant (250 N/m) and x is the displacement from the equilibrium position (0.32 m).

PE_spring = (1/2) * 250 N/m *\((0.32 m)^2\)

PE_spring = 12.8 J

The change in gravitational potential energy (ΔPE_gravity) is given by:

ΔPE_gravity = m * g * h

Where m is the mass (0.125 kg), g is the acceleration due to gravity (9.8 m/\(s^2\)), and h is the change in height (which is zero in this case since the height doesn't change).

ΔPE_gravity = 0 J

Therefore, the total mechanical energy (E) is equal to the potential energy stored in the spring:

E = PE_spring

E = 12.8 J

Since the total mechanical energy is entirely in the form of kinetic energy at the equilibrium position, we can calculate the speed (v) using the equation:

E = (1/2) * m * \(v^2\)

Rearranging the equation, we get:

\(v^2\) = (2 * E) / m

\(v^2\) = (2 * 12.8 J) / 0.125 kg

\(v^2\) = 204.8 \(m^2\)/\(s^2\)

Taking the square root of both sides:

v = √ 204.8 \(m^2\)/\(s^2\)

v ≈ 14.3 m/s

Therefore, the mass will be moving at approximately 14.3 m/s when it reaches the equilibrium position.

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Anaerobic transmission is when you touch a contaminated surface is a false statement.

Anaerobic organisms are the living things that can survive and grow where there is no oxygen in the surrounding environment so we can conclude that Anaerobic transmission is when you touch a contaminated surface is a false statement.

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The theory that has been proposed that would explain the neurology of memory are;

The neurophysiology of learning  can be described as the theory that cover the three main cognitive processes and this can be regarded as core value of the the information processing system.

It should be noted that the  information processing system usually make use of the  brains  which helps to remember information through attention, perception and all this are found in the functionality of the brain system in the human system.

Therefore, All of these are correct.

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Answer:

Explanation:

1. First draw a free body diagram of the scenerio (a block sliding down a a slant surface).
2. Then we analyze the forces and write equations that satisfy Fnet = ma. This will give us the acceleration as the block slides down the surface.

3. Last, we can use the kinematic equation (vf^2 = vi^2 + 2as) and to solve the final speed of the block.

Answer:

fhddmvxmvydlyghclhchc

Answer:

Tribal governments were much smaller and were usually more local. Anyone could have a voice in making political decisions. In most cases, important decisions were made by majority rule. This means that the group would take a vote. The decision that got the most votes would win.

Tribal leadership was local too. It depended mostly on a person’s wisdom and skills. As a result, leaders changed frequently. Some tribes chose one chief to lead in peacetime and another to lead during war. Custom and tradition governed the people’s actions, not written laws.

Explanation:

This is what i used for my DBA hope its helps you!

(on FLVS btw)

1. The maximum height above its launch level is 1.45 m

2. The time of flight of the ball is 1.1 s

1. How do I determine the maximum height?

From the question given above, the following data were obtained:

The maximum height can be obatianed as follow:

H = u²Sine²θ / 2g

H = [5.5² × (Sine 76)²] / (2 × 9.8)

Maximum height = 1.45 m

How do I determine the time of flight?

The time of flight of the ball can be obtained as follow:

T = 2uSineθ / g

T = [2 × 5.5 × Sine 76] / 9.8

Time of flight = 1.1 s

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Reference point

Explanation:

I am not sure

Answer:  a stretch of 2

Explanation: because it 2 (x) - 3

force = 75N --- (given)

acceleration = 3m/s² ---- (given)

75N = mass × 3m/s²

mass = 75÷3

4.44×\(10^{9}\) kg/s is the rate at which the sun mass is decreasing.

The Sun radiates energy through a process called nuclear fusion, where hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the process. According to Einstein's mass-energy equivalence principle (E=mc²), this energy release corresponds to a decrease in mass.

To calculate the rate at which the Sun's mass is decreasing, we can use the formula ΔE = Δmc², where ΔE is the change in energy, Δm is the change in mass, and c is the speed of light.

Given that the Sun radiates energy at a rate of 4×10^26 W, we can substitute this value into the equation as ΔE and solve for Δm.

ΔE = 4×10^26 W

c = 3×10^8 m/s (speed of light)

Using the equation ΔE = Δmc² and rearranging it, we get Δm = ΔE / c².

Substituting the values, we have:

Δm = (4×10^26 W) / (3×10^8 m/s)²

Evaluating this expression, we find that the rate at which the Sun's mass is decreasing is approximately 4.44×10^9 kg/s.

This calculation demonstrates that the Sun's mass is gradually decreasing as it continuously radiates energy into space, primarily through the process of nuclear fusion in its core.

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(a) The acceleration of the 1,400-kg boat is 0.30 m/s².

(b) The boat move 60 m in 20.0 s

(c) The velocity at the end of that time will be 6 m /s

It is given that mass of the boat = 1400 kg , forward push on the boat by the propeller = 1,725 N and resistive force of water = 1300 N

(a) Let the acceleration of the boat be "a" .

The net force on the boat will be

F(net) = F(push) - F(R)

         = 1725 - 1300

         = 425 N

Using Newton's second law of motion , we get

F(net) = ma

       a = F(net) / m

          = 425 / 1400

          =  0.30 m/s²

(b) Let the distance moved by the boat be "d" .

It is given that it starts from rest which means that u = 0

Now using the kinematic equation  s = ut + 1/2at² .   ...(1)

Putting a = 0.30  , t = 20 and u = 0  in equation (1) , we get

     s = 0 (20) + 1/2 (0.30)(20)²

        = 0 + 1/2 (0.30 × 400)

        =  120 /2

        = 60 m

(c) Let the final velocity of the boat be "v" .

Using the kinematic equation v = u + at     ..(2)

Putting a = 0.30  , t = 20 and u = 0  in equation (2) , we get

   v = 0 + (0.30)(20)

      = 6 m /s

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Answer:

The answer is:    

150 m

Explanation:

find acceleration first.

Vf = at + Vi

20 = a(15) + 0

a = 1.33m/s^2

x = 1/2at^2

x = 1/2 (1.33) (15)^2

x = 149.625m or round it to 150m

hope this helps

Answer:

1.33

Explanation:

We know

speed =distance travelled

time taken

so here distance travelled is 20.0 m/s

and time taken is 15.0s

now simplify

s=20.0/15.0

=4/3

=1.33

hope you understood it!

Sound waves are a type of mechanical wave that propagate through a medium, typically air but also other materials such as water or solids.

Frequency: the frequency of a sound wave refers to the number of cycles or vibrations it completes per second and is measured in Hertz (Hz).

Amplitude: the amplitude of a sound wave refers to the maximum displacement or intensity of the wave from its equilibrium position. It represents the loudness or volume of the sound, with larger amplitudes corresponding to louder sounds and smaller amplitudes corresponding to softer sounds.

Wavelength: the wavelength of a sound wave is the distance between two consecutive points in the wave that are in phase, such as from one peak to the next or one trough to the next. It is inversely related to the frequency of the wave.

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Answer:

920000

Explanation:

Each kg contains 1,000 grams

Answer:

The magnetic field is 24.2 mT.

Explanation:

The magnetic field can be calculated with the following equation:

\( B = \frac{\mu_{0}iN}{L} \)

Where:

i: is the current = 5.57 A

N: is the number of turns = 5*850 turns (it is five close-packed)

L: is the length = 1.23 m

\(\mu_{0}\): is the permeability = 4π*10⁻⁷ T*m/A          

Hence, the magnetic field is:

\( B = \frac{4\pi \cdot 10^{-7} T*m/A*5.57 A*5*850}{1.23 m} = 0.0242 T = 24.2 mT \)

Therefore, the magnetic field is 24.2 mT.

I hope it helps you!                                  

The wavelength of the spectrum is 3.83

Wavelength is a fundamental concept in physics that refers to the distance between two consecutive points on a wave that are in phase, meaning that they have the same position in the cycle of the wave. In other words,

it is the distance that a wave travels to complete one full cycle.

Wavelength is usually denoted by the Greek letter lambda (λ) and is typically measured in meters or other units of length, depending on the scale of the wave being considered

The wave consists of 3.5 cycles and the total distance is 13.4

hence for one cycle we have

= 13.4 / 3.5

= 3.828

= 3.83 in 2 decimal place

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Answer:

22.5 J

Explanation:

GPE=wxh- 45kg divided by 2m= 22.5

999mm is added to 100m, we get​ 100999m.

A unit conversion is defined as the same property as a different unit of measurement such that time can be expressed in minutes instead of hours, while distance can be expressed in miles to kilometers or feet or lengths which can be converted to any other measurement.

In the above given information,

We have two numbers which are 999mm and 100m

So, we have to convert 100m into mm.

we know, 1cm=10mm

                     1m=100cm=100×10=1000mm

100m will be=100×1000=100000mm

Now, after adding 999m with 100000mm,

999mm+100000mm =100999mm

Hence, when 999mm is added to 100m we get 100999m.

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As the angle is 90 degree, the dot product is 0, thus no work is done.

What is work?

Work is a scalar quantity that describes the amount of energy transferred or transformed by a force acting on an object through a distance. In physics, work is defined as the force acting on an object multiplied by the displacement of the object in the direction of the force.

The unit of work is the Joule (J), which is defined as the amount of energy required to move an object with a force of one Newton over a distance of one meter.

The work done by the hiker in lifting her body to the top of the hill can be calculated using the formula:

work = force x distance x cos(theta)

where force is the force exerted by the hiker, distance is the distance covered, and theta is the angle between the force and the displacement.

As the hiker is lifting her body, the force is equal to her weight (mg) and is directed upward. The distance is equal to the height of the hill (300m) and the angle between the force and displacement is 90 degrees (the force is perpendicular to the displacement).

Therefore, the work done by the hiker can be calculated as:

work = (51 kg) * (9.8 m/s^2) * (300 m) * cos(90)

work = (51 kg) * (9.8 m/s^2) * (300 m) * 0

work = 0

As the angle is 90 degree, the dot product is 0, thus no work is done.

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The rate of radiation into surrounding space of the box shaped wooden stove at a temperature of 205 degrees Celsius is 8,453.82 J/s.

The rate of radiation of the wooden stove is calculated as follows;

P =  εAσT4

Where:  

A = 2(Lw + Lh + Wh)

A = 2(0.75 x 1.2  +   0.75 x 0.4   + 1.2 x 0.4)

A = 3.36 m²

P = 0.85 x 3.36 x (5.67 x 10⁻⁸) x (478)⁴

P = 8,453.82 J/s

Thus, the rate of radiation into surrounding space of the box shaped wooden stove at a temperature of 205 degrees Celsius is 8,453.82 J/s.

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The ratio of hydrogen atoms to oxygen atoms in a water molecule is 2:1, which means that there are two hydrogen atoms for every one oxygen atom in a water molecule.Water is a molecule made up of two hydrogen atoms and one oxygen atom, with a molecular formula of H2O.

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Answer:

22 kHz or it could be 220000

Answer:

1. Letter A indicates the crest.

2. Letter E indicates the wavelength.

3. Letter C indicates the trough.

Explanation:

1. Determination of the the crest.

A crest is simply defined as a point on a wave where the displacement is maximum (i.e highest).

Considering the diagram given above, the point where the displacement is maximum is A. Therefore, A is the crest of the wave.

2. Determination of the wavelength.

The wavelength of a wave is simply defined as the distance between two successive crest or trough.

Obeserving the diagram above, we can see that E gives the distance between two successive crest. Therefore, E is the wavelength of the wave.

3. Determination of the trough.

A trough is simply defined as a point on a wave where the displacement is minimum (i.e lowest). Thus we can say that the trough is the opposite of the crest.

Considering the diagram given above, the point where the displacement is minimum is C. Therefore, C is the trough of the wave.

Answer:

The bulk modulus of the liquid is 1.534 x 10¹⁰ N/m²

Explanation:

Given;

density of the liquid, ρ = 1500 kg/m³

frequency of the wave, F = 410 Hz

wavelength of the sound, λ = 7.80 m

The speed of the wave is calculated as;

v = Fλ

v = 410 x 7.8

v = 3,198 m/s

The bulk modulus of the liquid is calculated as;

\(V = \sqrt{\frac{B}{\rho} } \\\\V^2 = \frac{B}{\rho}\\\\B = V^2 \rho\\\\B = (3,198 \ m/s)^2 \times 1500 \ kg/m^3\\\\B = 1.534 \ \times 10^{10} \ N/m^2\)

Therefore, the bulk modulus of the liquid is 1.534 x 10¹⁰ N/m²

Answer:

Net torque in positive direction:

Fz = -450 * cos 30 deg * 1.5 = -585 N-M

Fz = 200 * 3.5 = 700 N-M

Net F = 115 N-M

Torque is generally defined as L = R X F

X cross Y = Z     normal coordinate system

Note that Z will be out of the page giving the positive value for the torque.

1/(1/2+1/5) = 10/7 hours