a balloon filled with helium plus air at atmospheric pressure is designed to support a mass of 102 kg (payload empty balloon). air density is 1.29 kg/m3 , helium plus air density in the balloon is 0.372 kg/m3 , and helium density is 0.179 kg/m3 . ignoring the volume of the payload, find the volume of the balloon. answer in units of m3 .

The type of axle that is also a part of the drivetrain system is called a "drive axle" or "driven axle".

A drive axle is a component of a vehicle's drivetrain that is responsible for transferring power from the engine and transmission to the wheels. In a rear-wheel drive vehicle, the drive axle is located in the rear of the vehicle and transmits power to the rear wheels. In a front-wheel drive vehicle, the drive axle is located in the front of the vehicle and transmits power to the front wheels. In some vehicles, such as all-wheel drive or four-wheel drive vehicles, multiple drive axles may be used to transfer power to all four wheels.

The drivetrain of car is actually a collection of drivetrain components that work together with the engine to move the wheels and other sections of the car to propel it forward. The transmission, differential, driveshaft, axles, CV joints, and wheels are typically included in this group.

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Answer:

While waves that travel within the depths of the ocean are longitudinal waves, the waves that travel along the surface of the oceans are referred to as surface waves. A surface wave is a wave in which particles of the medium undergo a circular motion.

Explanation:

Are you satisfied or I should continue in the comments.

Answer:

B. What volume of water does the metal block displace?

Explanation:

water displacement is a way of finding volume for irregular shapes

The force of gravity causes the convection cell to fall back towards the core at point C.

In the area of fluid dynamics, a convection cell is a phenomenon that occurs when substance differences exist within a body of fluid or gas. These density dissimilar result in rising and down currents, which are the key characteristics of a convection cell. The convection currents in the atmosphere is the same as the cause of convection cells. Rough heating of the Earth's mainland and oceans creates temperature differences. Some air heats up and rises, and other air cools off and sinks. Convection is great by the near-universal property that "heat rises." On a planet with gravity, when trading with a normal fluid that expands. Heat transfer by convection is caused by the differences in temperature.

So we can conclude that convection cells happen all around us. Some examples can be found in boiling water, in the ocean, and in the clouds.

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Answer:

40g

Explanation:

Mass = density x volume

= 2 x 20

= 40g

Answer:

m =  V × ρ

=  20 milliliter × 2 gram/cubic meter

=  2.0E-5 cubic meter × 2 gram/cubic meter

=  4.0E-5 gram

=  4.0E-8 kilogram

Explanation:

The density of a material, typically denoted using the Greek symbol ρ, is defined as its mass per unit volume.

ρ =    

m  

V

           where:

ρ is the density

m is the mass

V is the volume

The calculation of density is quite straightforward. However, it is important to pay special attention to the units used for density calculations. There are many different ways to express density, and not using or converting into the proper units will result in an incorrect value. It is useful to carefully write out whatever values are being worked with, including units, and perform dimensional analysis to ensure that the final result has units of mass  volume. Note that density is also affected by pressure and temperature.

When a plastic rod is rubbed with fur, the plastic rod becomes negatively charge due to the transfer of electrons between the materials.

The charge transfer occurs as follows:

1. Initially, both the plastic rod and the fur have neutral charges.
2. When the plastic rod is rubbed with fur, friction causes electrons to be transferred from the fur to the plastic rod.
3. As a result of gaining electrons, the plastic rod becomes negatively charged.
4. Conversely, the fur loses electrons and becomes positively charged.

This process is an example of the triboelectric effect, where charge transfer occurs between two different materials through contact and separation.

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The most likely mean for aurora. She drinks one or two drinks every night. Option C is correct.

Binge-drinking is explained as having five or more drinks in one sitting for males, and four or more drinks in one sitting for women.

The majority of people who binge-drink do not have a serious alcohol problem. Binge-drinking, on the other hand, is a dangerous risk behavior linked to significant injuries and a variety of disorders.

Hence, option C is correct.

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Biker 1's acceleration:

(25 mph) / (3 s) = ((25 mi/h) • (1/3600 h/s)) / (3 s) ≈ 0.00231 mi/s²

Biker 2's acceleration:

(85 mph) / (8 s) = ((85 mi/h) • (1/3600 h/s)) / (8 s) ≈ 0.00295 mi/s²

Biker 2 has the greater acceleration.

The rate at which energy is transferred from the inside of the room to the outside environment is 998.4 W/m²

The rate of energy transfer through the glass window pane is given by

P = kA(T₂ - T₁)/d where

So, substituting the values of the variables into the equation, we have

P = kA(T₂ - T₁)/d

P = 0.80 Js/m-⁰C × 1.04 m²(10 ⁰C - 4 ⁰C)/0.005 m

P = 0.832 Js/m³-⁰C × 6 ⁰C/0.005 m

P = 4.992 Js.m³/0.005 m

P = 998.4 Js/m²

P = 998.4 W/m²

So, the rate at which energy is transferred from the inside of the room to the outside environment is 998.4 W/m²

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Explanation:

To increase power, it is necessary to decrease the work being done and decrease the time in which the work was completed. increase the work being done or decrease the time in which the work is completed.Ma

Answer:

If work is done faster, power is higher. If work is done slower, power is smaller. Since work is force times displacement (W=F*d), and velocity is displacement over time (v=d/t), power equals force times velocity: P = F*v. More power is seen when the system is both strong in force and fast in velocity.

Explanation:

Let's recalculate the new angular speed using the correct values.

We can use the conservation of angular momentum principle:

I1 * ω1 = I2 * ω2

Given:

I1 = 2.25 kg · \(\rm m^2\) (initial moment of inertia)

ω1 = 5.00 rad/s (initial angular speed)

I2 = 1.80 kg · \(\rm m^2\) (final moment of inertia)

ω2 = ? (final angular speed)

Substituting the values into the equation:

2.25 kg · \(\rm m^2\) * 5.00 rad/s = 1.80 kg · \(\rm m^2\) * ω2

Rearranging the equation to solve for ω2:

ω2 = (2.25 kg · \(\rm m^2\) * 5.00 rad/s) / (1.80 kg · \(\rm m^2\))

Calculating:

ω2 = 6.25 rad/s

Therefore, the new angular speed of the figure skater with his arms pulled in is 6.25 rad/s.

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To find the momentum of a proton moving with a speed of 0.801c, we can use the relativistic momentum equation:

p = γm0v

where p is the momentum, γ is the Lorentz factor, m0 is the rest mass of the proton, and v is the velocity.

Given:

Speed of the proton, v = 0.801c

Rest mass of the proton, m0 = 938 MeV/c²

First, we need to calculate the Lorentz factor γ:

γ = 1 / √(1 - (v/c)²)

Substituting the given values:

γ = 1 / √(1 - (0.801c/c)²)

  = 1 / √(1 - 0.801²)

  ≈ 1 / √(1 - 0.641601)

  ≈ 1 / √(0.358399)

  ≈ 1 / 0.598657

  ≈ 1.6717

Now we can calculate the momentum using the equation:

p = γm0v

Substituting the values:

p = (1.6717) * (938 MeV/c²) * (0.801c) ≈ 1251 MeV/c (to three significant figures)

Therefore, the momentum of the proton in the laboratory frame of reference is approximately 1251 MeV/c.

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Answer:

Enzymes

Explanation:

Enzymes are biological catalysts, which regulate various chemical reactions in the body.

The biochemical reactions involved in the digestion of food are regulated by enzymes. These biochemical reaction converts food into nutrients that are useful to the body.

For instance, the enzyme amylase catalyses the hydrolysis of starch into sugars.

Answer:

10m/s

Explanation:

using the formula a=v-u

t

Answer:

Hype

Explanation:

Yyrru

Answer:

C voltage

Explanation:

Voltage is the change in electric potential so basically current flows from high potential to low potential due to voltage.

Digital filters are important in digital signal processing. FIR and IIR filters are two types of digital filters. The main difference between FIR and IIR filters is that FIR filters are known as non-recursive filters, while IIR filters are recursive filters. In this answer, we will explore more about the differences between FIR and IIR filters.

FIR Filters FIR stands for finite impulse response. FIR filters are also called non-recursive filters. In an FIR filter, the output depends only on the current input and the previous inputs. FIR filters are also known as moving average filters. FIR filters have a linear phase response, which makes them useful in audio and image processing. FIR filters have more stable responses compared to IIR filters, which means they are more predictable.

IIR filters are more efficient than FIR filters because they use feedback loops. IIR filters have nonlinear phase responses, which make them useful in signal processing and control systems. IIR filters are less stable than FIR filters, which means they are less predictable.

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Answer:

The moon is 400x smaller but it's also 400x closer so it looks the same size even though it's not

Explanation:

To solve this we must be knowing each and every concept related to moon. Therefore, the moon is able to fully block the sun from our view on earth as  it is 400 times.

Any celestial object that revolves around a planet, such as the eight main planets, dwarf planets, or minor planets, is referred to as a moon. In order to distinguish the moon from other celestial bodies that circle other bodies, the term "natural satellite" may also be used to describe the moon.

The Galilean moons orbiting Jupiter, called after astronomer as well as discoverer Galileo Galilei, were the first moons found outside of the moon of Earth. The moon is significantly smaller than the sun. The moon is able to fully block the sun from our view on earth as the moon appears the same size despite the fact that it's 400 times smaller because it is 400 times closer and hence smaller.

Therefore, the moon is able to fully block the sun from our view on earth as  it is 400 times.

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Answer:- Input for computer-based weather prediction models;

- Local severe storm, aviation, fire weather, and marine forecasts;

- Weather and climate change research;

- Input for air pollution models;

- Ground truth for satellite data

Explanation:

To determine if lines are parallel, perpendicular, or neither, you need to look at the slopes of the lines.

The slope is a measure of how steep a line is. It is calculated by dividing the change in the y-coordinate by the change in the x-coordinate between any two points on the line. The slope of a line can be found using the slope formula, which is: (y2 - y1) / (x2 - x1)If two lines have the same slope, they are parallel.

If two lines have slopes that are negative reciprocals of each other, they are perpendicular. In other words, if the product of the slopes is -1, the lines are perpendicular. If two lines do not have the same slope, and their slopes are not negative reciprocals of each other, they are neither parallel nor perpendicular.

They are simply two intersecting lines. Here is one examples: Example: Determine if the lines y = 2x + 1 and y = 2x - 4 are parallel, perpendicular, or neither. To determine if the lines are parallel or perpendicular, we need to compare their slopes. Slope of the first line, y = 2x + 1:2Slope of the second line, y = 2x - 4:2

Therefore, the slopes of the two lines are the same, which means the lines are parallel.

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The final angular velocity of the two disks is 7 rev/s, and they rotate counterclockwise

The moment of inertia of a rotating body depends on both the body's mass and its distribution of mass relative to the axis of rotation.

When disks are stacked, it is required to conserve both the angular momentum and the kinetic energy.

Therefore, the moment of inertia of disk A and disk B is,

I= 1/2MR²

Let ωf be the final angular velocity of the two disks.

Applying the conservation of angular momentum and the kinetic energy, we have,

Iaωa+Ibωb = Iaωf + Ibωf... (1)

1/2MaRa²ωa - 1/2MbRb²ωb = 1/2(Ma + Mb)R²ωf... (2)

Now, inserting the given values in the above equation, we get,

Ia = 2kg × (0.5m)²

   = 0.5 kg·m²

Ib = 1kg × (1m)²

   = 1 kg·m²R

a = 0.5m,

ωa = 30 rev/s

Rb = 1m,

ωb = -20 rev/s (negative due to counterclockwise rotation)

From (1), we have,

(0.5 kg·m²) (30 rev/s) + (1 kg·m²) (-20 rev/s) = (0.5 kg·m² + 1 kg·m²) ωf

ωf = 7 rev/s (counterclockwise)

Therefore, the final angular velocity of the two disks is 7 rev/s, and they rotate counterclockwise.

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Equation of motion: To find the equation of motion and the oscillation frequency of a mass-spring system, we'll use Newton's second law of motion.

Force (F) = mass (m) × acceleration

F = ma

The force acting on a spring is given by Hooke's law:

F = -k x

where k is the spring constant and x is the displacement from the equilibrium position.

Thus, combining these two equations gives us the following equation of motion for a mass-spring system:

ma = -k x

Rearranging this, we get:

m(d²x/dt²) + k x = 0

This is the differential equation of motion of the mass-spring system.

Oscillation frequency:

The oscillation frequency can be calculated using the equation:

f = (1/2π) √(k/m)

where f is the frequency, k is the spring constant, and m is the mass.

Lagrange function:

The Lagrange function for a mass-spring system can be written as:

L = T - VL

is the difference between the kinetic energy (T) and potential energy (V) of the system.

The kinetic energy of the system is given by:

T = (1/2) mv²where m is the mass and v is the velocity.

The potential energy of the system is given by:

V = (1/2) kx²

where k is the spring constant and x is the displacement from the equilibrium position.

L = (1/2) mv² - (1/2) kx²

Equation of motion:

Using the Euler-Lagrange equation, the equation of motion for a mass-spring system can be derived.

It is given by:

d/dt (∂ L/∂v) - ∂L/∂x = 0

Substituting the values from the Lagrange function:

L = (1/2) mv² - (1/2) kx²∂L/∂v = m v ∂L /∂x = -k x.

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A: Part A: 10.6 nF, B: Part B: 75 Ω, C: Part C: 106 Ω

We used the formula for resonant frequency to calculate the capacitance, the formula for impedance at resonance to calculate the impedance of the circuit. at resonance, and the formula for impedance at a specific frequency to calculate the impedance at 4.0 kHz, using the given values of resistance, inductance, and resonant frequency.

Part A: The capacitance can be calculated using the formula for resonant frequency:

f0 = 1 / (2 * pi * sqrt(L * C))

where f0 is the resonant frequency, L is the inductance, and C is the capacitance. Solving for C, we get:

C = 1 / (4 * pi^2 * L * f0^2)

Substituting the given values, we get:

C = 3.37 nF

Part B: At resonance, the impedance of the circuit is purely resistive and can be calculated using the formula:

Z = R

where R is the resistance of the circuit. Substituting the given value, we get:

Z = 75 Ω

Part C: At a frequency of 4.0 kHz, the impedance of the circuit can be calculated using the formula:

Z = sqrt(R^2 + (Xl - Xc)^2)

where R is the resistance, Xl is the inductive reactance, and Xc is the capacitive reactance. The inductive reactance can be calculated using the formula:

Xl = 2 * pi * f * L

and the capacitive reactance can be calculated using the formula:

Xc = 1 / (2 * pi * f * C)

Substituting the given values, we get:

Xl = 452.39 Ω

Xc = 58.98 Ω

Z = 96.84 Ω

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Answer:

1) you could put more force behind it. (increase) 2) have another object interact with that object. (increase or decrease) 3) the object could hit a wall and stop or slow down (decrease)

Sorry if wrong

Simple harmonic motion is important area of study because it provides information about model oscillations.

Simple harmonic motion refers to a periodic motion of a point along a straight line in which the acceleration is always towards a fixed point and is proportional to its distance from that point.

Simple harmonic motion is important in model oscillations such as wind turbines and vibrations in car suspensions.

So we can conclude that simple harmonic motion is important are of study because it provides information about model oscillations.

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Answer:

Also, you could do this for the groups:

Group 1- creatures with scales

Group 2- creatures with fur

Group 3- creatures with feathers

For 4 groups you could possible do:

Group 1- no legs

Group 2- 2 legs with wings

Group 3- 2 legs without wings

Group 4- 4 legs

Answer:

1280Nm

Explanation:

torque= I×alpha(angular acceleration)

so Angular acceleration is found by the following process.

All stars die in about 5 billion years — our sun will, too. The Sun will first become a Red Giant and then a white dwarf.

So the final stage is White dwarf.