-The diagram above represents two identical pulses approaching each other in a uniform medium.
As the pulses meet and are superposed, the maximum displacement of the medium is?
- 6 cm
0 cm
6 cm
3 cm

Answer:

0

Explanation:

The displacement is zero since it goes in a full circle and ends up where it started.

Answer: Fn

Explanation: Because Fn is applying force upward

The 1 1/2 ounces (30 ml) of 80 proof liquor contains more alcohol than the other three options due to its higher alcohol content.

The 1 1/2 ounces (30 ml) of 80 proof liquor contains more alcohol than the other three options: five ounces (120 ml) of wine, 12 ounces (360 ml) of beer, and 12 ounces (360 ml) of wine-cooler.
To understand why, we need to compare the alcohol content of each option.
First, let's consider the 1 1/2 ounces (30 ml) of 80 proof liquor. "Proof" is a measure of the alcohol content. An 80 proof liquor means it contains 40% alcohol by volume. So, 30 ml of 80 proof liquor contains 12 ml of alcohol (30 ml * 40%).
Next, let's look at the other options. Wine typically has an alcohol content ranging from 12% to 15%. So, five ounces (120 ml) of wine would contain about 14-18 ml of alcohol.
Beer usually has an alcohol content of around 4-6%. So, 12 ounces (360 ml) of beer would contain about 14-22 ml of alcohol.
Wine-coolers are similar to wine in terms of alcohol content, usually around 4-7%. So, 12 ounces (360 ml) of wine-cooler would contain about 14-25 ml of alcohol.
Comparing the numbers, the 1 1/2 ounces (30 ml) of 80 proof liquor contains the most alcohol at 12 ml.
In summary, the 1 1/2 ounces (30 ml) of 80 proof liquor contains more alcohol than the other three options due to its higher alcohol content.

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The amount of heat needed to raise the temperature of a 2kg object from 15°C to 25°C is 34000J.

HOW TO CALCULATE SPECIFIC HEAT CAPACITY:

Where;

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A baseball player hits a 0.154 kg baseball moving at 40 m/sec into the center field at a velocity of 52 m/sec. If the impact lasts 0.005 seconds, the force applied when he impacts the ball is 369.6 Newtons.

To solve for the force applied when the baseball player hits the ball, we can use the equation:

F = m * (Δv / Δt)

where F is the force, m is the mass of the baseball, Δv is the change in velocity (final velocity minus initial velocity), and Δt is the time for the impact.

Given:

m = 0.154 kg (mass of the baseball)

Δv = 52 m/s - 40 m/s = 12 m/s (change in velocity)

Δt = 0.005 s (time for the impact)

Substituting the values into the formula, we get:

F = 0.154 kg * (12 m/s / 0.005 s)

F = 369.6 N

Therefore, the force applied when the baseball player hits the ball is approximately 369.6 Newtons.

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The initial velocity of the train is 20m/s when the train decelerates uniformly at a rate of 2m/s2. It means that initially, at time = 0 seconds, the train was moving with a velocity of 20m/s.

We know that,

v = u +at

where, v = final velocity

u = initial velocity

a = acceleration

t = time taken

In this case, as the train is decelerating we will use a negative sign with acceleration.

Substituting the values we get,

v = u + (-2)(10)

v will be equal to zero, as the train comes to a stop.

0 = u - 20

u = 20 m/s

Hence, the initial velocity of the train is 20m/s when the train decelerates uniformly at a rate of 2m/s2 and comes to a stop in 10 seconds.

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Answer: 1.4mi/hr²

Explanation:

Blank 1: We know that acceleration is the change in velocity/change in time

Using this, we know that the acceleration will be: (50-15)/25 = 1.4

Blank 2: mi/hr²

any object with mass exerts gravity

Answer:

254.47

I believe this is the right answer. I'm not sure if your supposed to round but if you dont have ti then then should be correct :)

Answer:

81 π cm^3

Explanation:

Big Brain :]

Answer:

cell

Explanation:

here are all the symbols-

hope this helps, take care and stay safe

Answer:

Left

Explanation:

The force is applied opposite of the acceleration.

If the hoist tower isn't enclosed, the hoist platform must be totally enclosed on all sides for the full height between the floor and the overhead protective covering.

A hoist tower can be defined as temporary elevator shaft made of scaffolding that is constructed and used to provide pathways for hoisting materials during a building-construction work.

According to the Occupational Safety and Health Administration (OSHA), the hoist platform must be totally enclosed on all sides for the full height between the floor and the overhead protective covering when the hoist tower isn't enclosed.

In conclusion, the hoist platform must be totally enclosed on all sides in order to prevent a potential injury to construction workers or an accident during a building-construction work.

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Answer:

The magnitude of the friction force that the floor exerts on the box is 8.5 newtons.

Explanation:

From Newton's Laws of Motion and given that box is moving at constant velocity, the net acceleration of the box is zero, meaning that magnitude of friction force is equal to the magnitude of the horizontal applied force. Please notice that friction force is the reaction to the horizontal force. The equation of equilibrium for the box is:

\(\Sigma F = F - f = 0\) (1)

Where:

\(F\) - Horizontal applied force, measured in newtons.

\(f\) - Friction force, measured in newtons.

If we know that \(F = 8.5\,N\), then the magnitud of the friction force that the floor exerts on the box is:

\(f = F\)

\(f = 8.5\,N\)

The magnitude of the friction force that the floor exerts on the box is 8.5 newtons.

Answer:

No, it is not necessary for them to have same mass.

Explanation:

Let both bodies have a density d1 and d2 respectively.

Since their volumes are equal V1 = V2

we know that, https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7Bvolume%7D

Hence, d1 =  and d2 =    

Taking the ratio of densities,we get

This implies that unless the bodies have same densities, the mass of the two bodies will not be same.

Answer:

The neutral state of an atom is when it's net charge is zero; that is, the number of protons equals the numbers of electrons. Oxygen is the eighth element in the periodic table, with the symbol O. This means that it has eight electrons in its neutral state. Since it is neutral, it also has eight protons!

Answer:

5 km/h

Explanation:

distance divided by time

Nicki rides her bike at a constant speed for 6 km. That part of her ride takes her 1 hour. She then rides her bike at a constant speed for another 9 km. That part of her trip takes her 2 hours. Her average speed is 5m/s

Based on the given conditions, formulate: \((9+6) \div($ $2+1)$\)

Calculate the sum or difference: \($\frac{15}{2+1}$\)

Calculate the sum or difference: \($\frac{15}{3}$\)

Reduce the fraction: 5 m/s

get the result: 5 m/s

What is average speed?

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substitute with the givens to get:

\begin{align*} I&=\dfrac{3.41 \times 10^{-3} \mathrm{~T}}{(4\pi \times 10^{-7} \mathrm{~T\cdot m/A})(10000 \mathrm{~turn/m})}\\ &=0.271 \mathrm{~A} \end{align*}

I

​

The solenoid's current is 0.272A.    

solved from this equations, I=/\(\frac{3.41×10⁻³T}{(4π×10⁻⁷T⋅m/A)(10000 turn/m)}\)

Electrical charge carriers, such as electrons, flow as current. From negatives to positive points, current flows. The amperage seems to be the SI unit of measurement for alternating energy (A). One make this process of electrical current traveling through a specific place for one second is refereed to as one amperage of power.

Current is typically represented by the letter I, which comes from the French term intensité du courant (current intensity). The term "current" is frequently used to refer to current intensity. André-Marie Ampère, who gave the electric current unit its name, formulated his force law using the I symbol (1820).

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To find the Thevenin voltage (VTh) without using Kirchhoff's voltage law (KVL) or Kirchhoff's current law (KCL), we can apply the voltage divider rule. The voltage divider rule states that the voltage across a resistor in a series circuit is proportional to its resistance.

In Figure 8-82, we need to determine the current through the load RL. To do this, we first find the Thevenin voltage (VTh) which is the open-circuit voltage across the load terminals. Here's how we can find it using the voltage divider rule:

Identify the two resistors in series: The 5.6 kQ resistor and the 15 kQ resistor.
Calculate the total resistance (RT) of the series combination: RT = 5.6 kQ + 15 kQ = 20.6 kQ.
Identify the resistor across which you want to find the voltage: In this case, it is the 15 kQ resistor.
Apply the voltage divider rule: \(VTh = (R2 / (R1 + R2)) * VSource\).
  - Substitute the values: \(VTh = (15 kQ / (5.6 kQ + 15 kQ)) * 32 V\).
  - Simplify the expression:\(VTh = (15 kQ / 20.6 kQ) * 32 V\).
  - Calculate VTh:\(VTh ≈ 23.44 V\).
Therefore, the Thevenin voltage (VTh) is approximately 23.44 V.
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Answer:

The adapted expression for average acceleration is \(a = \frac{v}{t'}\).

Explanation:

Let be \(v = v_{o} + a\cdot t\), which can be adapted by using the following substitution:

\(t = t'-t_{o}\)

Where:

\(t'\) - Final instant, measured in seconds.

\(t_{o}\) - Initial instant, measured in seconds.

\(v = v_{o}+a\cdot (t-t_{o})\)

Where:

\(v\) - Final velocity, measured in meters per second.

\(v_{o}\) - Initial velocity, measured in meters per second.

\(a\) - Average acceleration, measured in meters per square second.

Now, average acceleration is cleared:

\(a = \frac{v-v_{o}}{t'-t_{o}}\)

Given that \(t_{o} = 0\,s\) and \(v_{o} = 0\,\frac{m}{s}\), then:

\(a = \frac{v}{t'}\)

Answer:

a = (v-v0)      

     ____      where v = final velocity, v0

         t

Explanation:

Using algebra, , where v = final velocity, v0 = initial velocity, and t = time. So,

= -9.3 m/s2.

An electrostatic induction occurs when one charged object influences the distribution of charges in another object without direct contact.

Electrostatic induction refers to the process of redistributing electric charges in an object or a conductor without direct contact with a charged object. It occurs when a charged object is brought near an uncharged or neutral object, causing the redistribution of charges within the neutral object.

During electrostatic induction, the presence of a charged object induces a separation of charges within the neutral object. This is achieved through the rearrangement of electrons within the atoms or molecules of the neutral object. The charged object exerts an electric field on the neutral object, attracting or repelling the electrons within it.

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Answer:

mark me as the brainly plss

Explanation:

hope it helps

Answer:

c.glass sheet

Explanation:

glass sheet is the plain surface and it will have low friction. compare to cloth,sand have uneven surface

The molar mass of the unknown gas is approximately 44.07 g/mol. The molar mass of the unknown gas can be calculated using Graham's law of effusion, which states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.

By using the given data, we can set up a proportionality equation where the ratio of the rates of effusion for the two gases (unknown gas and nitrogen gas) is equal to the square root of the ratio of their molar masses.

The equation can be written as:

Rate of effusion of nitrogen gas / Rate of effusion of unknown gas = √(Molar mass of unknown gas / Molar mass of nitrogen gas)

Substituting the given values, we get:

48 s / 63 s = √(Molar mass of unknown gas / 28 g/mol)

Simplifying and solving for the molar mass of the unknown gas, we get:

Molar mass of unknown gas = 28 g/mol x (48/63)^2 = 20.6 g/mol

Therefore, the molar mass of the unknown gas is approximately 20.6 g/mol.

In explanation, the effusion experiment measures the rate of gas escaping through a small opening in a container. The unknown gas is compared to nitrogen gas, which has a known molar mass of 28 g/mol. By using Graham's law of effusion, we can calculate the molar mass of the unknown gas. The equation relates the rate of effusion of each gas to its molar mass, and by setting the two ratios equal, we can solve for the unknown molar mass.

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In a space with hyperbolic geometry, the behavior of parallel lines differs from that of Euclidean geometry.

In hyperbolic space, parallel lines diverge from each other as they extend further.If two initially parallel flashlight beams traverse billions of light-years of space in a hyperbolic geometry, they will gradually diverge from each other. The divergence between the beams will increase as they travel a greater distance.

This phenomenon is a consequence of the non-Euclidean geometry of space. In hyperbolic space, the curvature causes parallel lines to "spread out" or diverge. The extent of the divergence will depend on the specific curvature of the space and the distance traveled.

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Incomplete question.

Options:

Answer:

When the green rubber ball leaves the person's hand (frame 120)

Explanation:

Remember, we are told to answer based on the green rubber ball, which means we are to take note of the moment when the green rubber ball leaves the person's hand (frame 120).

However, if we decide to set the time at the start of the video or when the green rubber ball reaches the top, we would get inaccurate results.

Explanation:

formula: Mass

Density x volume

2a) m=10kg v=0.3m³

10÷0.3=33.3 kg/m

2b) m = 160 kg V=0.1m³

160÷0.1=1600 kg/m

2c) m = 220 kg V = 0.02m³

220÷0.02=11000 kg/m

A wooden post has a volume of 0.025m³ and a mass of 20kg. Calculate its density in kg/m.

density = volume ÷ mass

20÷ 0.025=800 kg/m

Challenge: A rectangular concrete slab is 0.80m long, 0.60 m wide and 0.04m thick. Calculate its volume in m³.

Formula : Length x width x height = Volume

0.80 x 0.60 x 0.04 = 0.0192m³

B) The mass of the concrete slab is 180 kg. Calculate its density in kg/m.

density = volume ÷ mass

180 ÷ 0.0192 = 9375 kg/m

The guitar player should shorten the string to a length of 1.036 m to create a 491 Hz note.

The guitar is a popular stringed instrument with a long neck, frets, and a flat soundboard. It has six strings which are typically made of nylon or steel. The strings are tuned to specific notes and plucked with the fingers or a pick. The guitar is used in many genres of music, from classical and jazz to rock and metal. It is also a great instrument for solo performances, as well as for accompanying singers. The guitar is a versatile instrument that can be used to create a range of sounds, from soft and mellow to loud and powerful.

The length of the string needed to create a note of 491 Hz is determined by the formula:

length = velocity/frequency.

Therefore, the length of the string needed to create a 491 Hz note is:

length = 509 m/s/491 Hz = 1.036 m.

Therefore, the guitar player should shorten the string to a length of 1.036 m to create a 491 Hz note.

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