A gas has a temperature of 14 °C, and a volume of 4. 5 L. If the temperature is raised to 29 °C and the pressure is not changed, what is the new volume of the gas? A. 4. 7 L B. 4. 9 L C. 5. 3 L D. 5. 5 L

Your friend is correct. In order to determine the speed at which the person who leaves point B must walk, you need to know the length of AC and BC.

This is because the time it takes for each person to reach point C is dependent on the distance they must travel and the speed at which they are traveling.

Using the formula time = distance / speed, you can calculate the time it takes for each person to reach point C.

For the person leaving point A, the time it takes to reach point C is tA = AC / 3, since they are traveling at a speed of 3 miles per hour.

For the person leaving point B, the time it takes to reach point C is tB = BC / x, where x is the speed at which they are traveling.

Since both people are intended to reach point C at the same time, you can set the two equations equal to each other:

AC / 3 = BC / x

Cross-multiplying and solving for x gives you the speed at which the person leaving point B must walk:

x = 3BC / AC

Without knowing the length of AC and BC, you cannot determine the speed at which the person leaving point B must walk. Therefore, your friend is correct.

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a) The number of liters of gas is 2.955 L

b) The mass of the small bar of platinum is 12.64 kg.

Given data:

a)

To calculate the number of liters of gas required to drive 65.5 kilometers in a car that gets 52.0 miles per gallon, we need to convert both the distance and the fuel efficiency to a consistent unit of measurement.

1 mile is approximately equal to 1.60934 kilometers. Therefore, 65.5 kilometers is approximately equal to 40.68 miles.

Now we can calculate the number of gallons of gas required:

Number of gallons = Distance / Fuel efficiency

Number of gallons = 40.68 miles / 52.0 miles per gallon

Number of gallons ≈ 0.782 gallons

To convert gallons to liters, we use the conversion factor: 1 gallon = 3.78541 liters.

Number of liters = Number of gallons * 3.78541

Number of liters ≈ 0.782 gallons * 3.78541 liters/gallon

Number of liters ≈ 2.955 liters

Therefore, approximately 2.955 liters of gas will be required to drive 65.5 kilometers in the given fuel-efficient car.

b)

Regarding the mass of a small bar of platinum, measuring 1 foot long, 3 inches wide, and 1 inch deep, we need to convert the measurements to a consistent unit (either inches or feet) before calculating the volume and then multiplying it by the density of platinum.

1 foot is equal to 12 inches. Therefore, the dimensions of the bar can be converted to 12 inches long, 3 inches wide, and 1 inch deep.

Volume = Length * Width * Depth

Volume = 12 inches * 3 inches * 1 inch

Volume = 36 cubic inches

To convert cubic inches to cubic centimeters (cm³), we use the conversion factor: 1 cubic inch = 16.3871 cubic centimeters.

Volume = 36 cubic inches * 16.3871 cm³/cubic inch

Volume ≈ 590.3526 cm³

Now we can calculate the mass using the density of platinum:

Mass = Volume * Density

Mass = 590.3526 cm³ * 21.45 g/cm³

Mass ≈ 12637.8697 grams or 12.64 kilograms (rounded to two decimal places)

Hence, the mass of the small bar of platinum measuring 1 foot long, 3 inches wide, and 1 inch deep is approximately 12.64 kilograms.

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Using this equilibrium condition, we can solve for x: 3.924 N = 19.5 N/m * x, which gives x = 3.924 N / 19.5 N/m ≈ 0.201 m. Therefore, the body descends approximately 0.201 meters below the initial position.

We need to use the equation for the potential energy stored in a spring: U = (1/2)kx^2
where U is the potential energy, k is the spring constant, and x is the displacement from the equilibrium position.
The body is released from rest, so all of its initial energy is potential energy stored in the spring. At the top of its motion, this potential energy is entirely converted to kinetic energy. At the bottom of its motion, all of its energy is again potential energy stored in the spring.
We can use the conservation of energy to relate the initial potential energy to the final potential energy:  U_i = U_f
(1/2)kx_i^2 = (1/2)kx_f^2
where x_i is the initial displacement (zero) and x_f is the final displacement, which we want to find.
Solving for x_f, we get:  x_f = sqrt((U_i/k))

We're given the spring constant, k = 19.5 N/m, and the mass of the body, m = 0.400 kg. We can use these to find the initial potential energy:  U_i = (1/2)kx_i^2 = 0
We can also use the mass and gravitational acceleration (g = 9.81 m/s^2) to find the weight of the body:
F = mg = (0.400 kg)(9.81 m/s^2) = 3.924 N

Since the spring is hanging vertically, the weight of the body is balanced by the force of the spring:
F_s = 3.924 N

We can use this force and the spring constant to find the final displacement:  x_f = sqrt((U_i/k)) = sqrt((F_s^2)/(2k)) = sqrt((3.924 N)^2/(2(19.5 N/m)))
x_f = 0.402 m
Therefore, the body ascends 0.402 m from its initial position.
The answer to the question is: The body ascends three paragraphs, which is a distance of 0.402 m from its initial position. In the initial position, the mass (0.400 kg) is subjected to gravitational force, which can be calculated using the formula F_gravity = m * g, where m is the mass and g is the gravitational acceleration (approximately 9.81 m/s²). Therefore, F_gravity = 0.400 kg * 9.81 m/s² = 3.924 N.
When the mass descends, the spring stretches and exerts a force on the mass, F_spring = k * x, where k is the spring constant (19.5 N/m) and x is the extension of the spring. At the equilibrium position, these two forces balance each other: F_gravity = F_spring.

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Answer:

1. Privacy

-The state or condition of being free from being observed or disturbed by other people.

2. Commitment

-The state or quality of being dedicated to a cause, activity, etc.

3. Profile

-There are multiple answers for this word so I'm not sure which is the one you need.

4. Widow

-A woman who has lost her spouse by death and has not remarried.

5. Aristocrat

-A member of the aristocracy.

6. Affordable

-Inexpensive; reasonably priced.

7. Variable

-A symbol for a value we don't know yet. It is usually a letter like x or y.

Explanation:

This experiment help us understand their behavior as well as how the people will cop up with the rules and regulation the society wants to apply on them

In a two-week simulation of a prison setting, the Stanford prison experiment was meant to look at the impact of situational factors on participants' responses and behaviors.

Hence, this experiment allows us to better understand their behavior, as well as how individuals will respond to the laws and regulations imposed by society.

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Answer:

40KJ

Explanation:

m=200g

V=20m/s

Ek=?

Ek=(m*V²)/2

Ek=(200*20²)/2

Ek=(200*400)/2

Ek=80 000/2

Ek=40 000 J =40KJ

C.1. The two basic premises for the special theory of relativity are: The laws of nature are the same for everyone and The speed of light is the same for everyone.

The special relativity theory is based on two fundamental tenets: that the light speed should be constant in all inertial frames of reference and that the rules of physics ought to be independent of a uniform motion of such a frame.

The separation of two occurrences in space and time, an object's energy momentum, and of course his speed of light are all examples of absolute dimensions of space and time that Einstein also specified.

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Answer:

8173.8 km

Explanation:

Fg=G(M*m/r^2)

r=sqrt(G*M*m/Fg)

G=6.6743*10^-11

M(earth)=5.972*10^24kg

M(object)=352kg

Fg=-2100N

r=sqrt((6.6743*10^-11)*(5.972*10^24kg)*(352)/-2100)

r=8173808m

r=8173.8km

According to Newton's calculations, gravity reduces to a fourth of what it was at the surface of the Earth if the distance from the planet's centre is doubled. At the Earth's surface, a satellite with a mass of 1,000 kg exerts a weight force of 9,800 N.

Satellites are pulled toward Earth by its gravity, even when they are hundreds of kilometres distant. The satellite doesn't fall back to Earth; instead, it travels into orbit above it due to gravity and the velocity it acquired during launch into space.

A satellite that is in a steady circular orbit around the Earth is always falling. It encounters a gravitational pull toward the centre of Earth as it orbits, which forces it to shift course and “fall” towards Earth.

Therefore, Since gravity is the only force acting on a satellite in circular orbit, the centripetal force and gravity must be equal: Fc = Fg.

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Answer:

2 m

Explanation:

The following data were obtained from the question:

Time 1 = 3 s

Time 2 = 3.5 s

Velocity = 4 m/s (constant)

Displacement =?

Next, we shall determine the change in time. This can be obtained as follow:

Time 1 = 3 s

Time 2 = 3.5 s

Change in time = 3.5 – 3

Change in time = 0.5 s

Finally, we shall determine the displacement of the bird between 3 s and 3.5 s as follow:

Velocity = 4 m/s

Time = 0.5 s

Displacement =?

Velocity = Displacement /Time

4 = Displacement /0.5

Cross multiply

Displacement = 4 × 0.5

Displacement = 2 m

Therefore, the displacement of the birth between 3 and 3.5 s is 2 m.

The amount of heat energy required to raise the temperature of a 6.0-cm-diameter copper sphere from -50°C to 150°C is 7.8 kJ.

Given:Radius (r) = 3 cm, Diameter = 6 cm, Temperature T1 = -50°C, Temperature T2 = 150°C

Now we have to find the amount of heat energy required to raise the temperature from T1 to T2.To find out the amount of heat energy, we will use the following formula:

Q = m × C × ΔT

where

Q = heat energy in Joules, m = mass of the copper sphere in kg, C = specific heat capacity of copper, ΔT = change in temperature

ΔT = T2 - T1= 150°C - (-50°C) = 200°C

The specific heat capacity of copper is 0.385 J/g°C or 385 J/kg°C.

We need to convert the radius to meters and mass to kg. Density of copper is 8.96 g/cm³.

Let's apply this conversion:

Volume of the sphere= 4/3πr³= 4/3 × 3.14 × (0.03 m)³= 1.13 × 10⁻⁴ m³

Density of copper = mass / volume mass of copper = volume × density= 1.13 × 10⁻⁴ m³ × 8.96 × 10³ kg/m³= 1.01 × 10⁻¹ kg

Therefore,

Q = m × C × ΔT= 1.01 × 10⁻¹ kg × 385 J/kg°C × 200°C= 7.8 × 10³ J or 7.8 kJ

Hence, the amount of heat energy required to raise the temperature of a 6.0-cm-diameter copper sphere from -50°C to 150°C is 7.8 kJ.

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Answer:

6.39*(10 to the 23rd)=

6.39*10²³

The voltage measured by the oscilloscope is 2 volts.

An oscilloscope is a device used to display and analyze the waveform of electronic signals. The voltage scale on an oscilloscope is usually calibrated in volts per division. This means that each division on the screen represents a certain amount of voltage.

In the given scenario, the oscilloscope is set in the 0.5 volts per division scale. This means that each division on the screen represents 0.5 volts of voltage. The signal measures four whole divisions, which means the total voltage can be calculated by multiplying the number of divisions by the volts per division.

Therefore, the value of voltage can be calculated as follows:

4 divisions x 0.5 volts per division = 2 volts

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Answer:

3

Explanation:

If there is 3 at the moment (atm) is the same as might be (mb) in the air.

Answer:

Initial velocity, u = 23.33 m/s

Explanation:

Given the following data;

Acceleration = 2.5 m/s²

Distance = 4 km to meters = 4000 meters

Time = 0.8 mins to seconds = 0.8 * 60 = 48 seconds.

To find the initial velocity, we would use the second equation of motion;

\( S = ut + \frac {1}{2}at^{2}\)

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

4000 = u*48 + ½*2.5*48²

4000 = 48u + 1.25*2304

4000 = 48u + 2880

48u = 4000 - 2880

48u = 1120

Initial velocity, u = 1120/48

Initial velocity, u = 23.33 m/s

To find the position function of the particle, we can integrate the given acceleration function, a(t), twice with respect to time. Given that a(t) = t^2 + 2t - 7, we'll integrate it twice to obtain the position function, s(t).

Let's proceed with the integration step by step:

Step 1: Integrate a(t) with respect to time to find the velocity function, v(t):

∫(a(t) dt) = ∫((t^2 + 2t - 7) dt)

Integrating each term separately:

∫(t^2 dt) + ∫(2t dt) - ∫(7 dt)

= (1/3)t^3 + t^2 - 7t + C1

Since we know that v(0) = 0, we can substitute t = 0 and solve for the constant C1:

v(0) = (1/3)(0)^3 + (0)^2 - 7(0) + C1

0 = 0 + 0 + 0 + C1

C1 = 0

Therefore, the velocity function becomes:

v(t) = (1/3)t^3 + t^2 - 7t

Step 2: Integrate v(t) with respect to time to find the position function, s(t):

∫(v(t) dt) = ∫(((1/3)t^3 + t^2 - 7t) dt)

Integrating each term separately:

∫((1/3)t^3 dt) + ∫(t^2 dt) - ∫(7t dt)

= (1/12)t^4 + (1/3)t^3 - (7/2)t^2 + C2

Since we know that s(0) = 0, we can substitute t = 0 and solve for the constant C2:

s(0) = (1/12)(0)^4 + (1/3)(0)^3 - (7/2)(0)^2 + C2

0 = 0 + 0 + 0 + C2

C2 = 0

Therefore, the position function becomes:

s(t) = (1/12)t^4 + (1/3)t^3 - (7/2)t^2

Hence, the position function of the particle moving along the s-axis is given by s(t) = (1/12)t^4 + (1/3)t^3 - (7/2)t^2.

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Answer:

Because of the interstellar dust and interior location of the solar system.

Explanation:

We will probably not be able to detect the neutral hydrogen that gives rise to the 21-cm radio signal if we point a large optical telescope to the region because, the interstellar dust obscures the location of the spiral arm of the Milky way galaxy and this makes neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

Also, the interior location of the solar system also makes the neutral hydrogen that gives rise to the 21-cm radio signal difficult to detect.

So, the interstellar dust and the interior location of the solar system makes it difficult to detect the neutral hydrogen that gives rise to the 21-cm radio signal with a large optical telescope.

Answer:

See below

Explanation:

Using conservation of momentum:

Initial momentum = (77+32 kg)* 3.8  m/s = 414.2   kg m/s

Jumping off with zero speed relative to ground (I think this is what zero horizontal speed MEANS) means all of his momentum is given to the cart  ( think about jumping off of a skateboard)

  final momentum of the cart

      mv = 414.2

       v = 414.2/32 = 12.94 m/s    for a + 9.13 m/s change

Uniform circular motion is a motion that is uniform in terms of speed and circular in terms of its path.

Uniform means constant speed and its path is circular.

Thus, the statement is true.

Answer:

A

Explanation:

Positive slope lines have a left to right ascent. A negative slope is present on lines that descend from left to right. Consequently, a diagonal line with a positive slope (/) would be to the right. Thus, option A is correct.

The height difference between two tile corners that is on the diagonal. A hidden value is used to determine if a tile can be seeded on, passed by a cart, or have the corner of the pavement tile lowered.

When two variables have a positive slope, it means that they are positively correlated; that is, when x rises, y rises as well, and when x falls, y falls as well.

A line on a line graph that has a positive slope rises as the line advances from left to right.

Be aware that a line's positive slope causes it to slope upward from left to right. Remember that a line with a negative slope descends from left to right. Keep in mind that a line has no slope when it is horizontal.

Therefore, positively sloping diagonal general shape of the graph line.

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Answer:

"For towing, a tow chain should be of a length that keeps both vehicles within the maximum 4.5 meter distance, also  tow chains an be any length 20 foot chains are often chosen"  

Explanation:

-  https://letstowthat.com

Also Quick note the feet of tow rope or chain varies on the situation but most longest or 20 feet.  

The angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

To determine the angles θ and θ' in the given scenario, we can use Snell's Law, which relates the angles of incidence and refraction to the refractive indices of the media involved. Snell's Law can be stated as follows:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Where:

n₁ is the refractive index of the medium of incidence (in this case, air with a refractive index close to 1),

θ₁ is the angle of incidence,

n₂ is the refractive index of the medium of refraction (in this case, linseed oil with a refractive index of 1.48), and

θ₂ is the angle of refraction.

Let's solve for the unknown angles θ and θ' using the given information.

Given:

Angle of incidence θ = 1°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of refraction θ₂.

Using Snell's Law, we have:

n₁ * sin(θ₁) = n₂ * sin(θ₂)

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

sin(θ₁) = n₂ * sin(θ₂)

Plugging in the values:

sin(1°) = 1.48 * sin(θ₂)

We can now solve for θ₂:

θ₂ = arcsin(sin(1°) / 1.48)

Calculating this value, we find:

θ₂ ≈ 0.688°

Now, let's determine the angle θ'.

Given:

Angle of refraction θ₂ = 0.688°

Refractive index of linseed oil n₂ = 1.48

We need to find the angle of incidence θ'.

Using Snell's Law, we have:

n₂ * sin(θ₂) = n₁ * sin(θ')

Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:

n₂ * sin(θ₂) = sin(θ')

Plugging in the values:

1.48 * sin(0.688°) = sin(θ')

Solving for θ', we find:

θ' = arcsin(1.48 * sin(0.688°))

Calculating this value, we get:

θ' ≈ 1.988°

Therefore, the angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.

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Electromagnetic radiation is a form of energy that travels in waves and includes a wide range of frequencies and energies. Different types of electromagnetic radiation have varying amounts of energy associated with them.

In order of decreasing energy, the types of electromagnetic radiation you provided can be arranged as follows:

So, the correct order from highest to lowest energy is:

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Answer:

the acceleration is 2.5 MPH over 12 mins.

Explanation:

30 MPH in 12 minutes=

30/12=

2.5

The voltage generates a force over the electron, this force is the one we use to calculate the acceleration

First, we apply the energy equation to find the Fd result based on voltage. Then we find the acceleration times distance. Finally, we find the speed with a kinematic equation.

Now I'm going to find the percentage of the speed of light.

The time taken for the car to go from rest to 21 m/s is 3.2 seconds.

The acceleration of the car is determined by applying Newton's second law of motion as shown below.

Mathematically, the formula for Newton's second law of motion is given as;

F (net) = ma

where;

The net force acting on the car is calculated as follows;

F (net) = F - Ff

where;

F (net) = 38,900 N - 34,000 N

F (net) = 4,900 N

The acceleration of the car is calculated as follows;

a = F (net) / m

a = ( 4,900 N ) / ( 745 kg )

a = 6.58 m/s²

The time of motion of the car is calculated as follows;

v = u + at

v = 0 + at

v = at

t = v / a

t = ( 21 m/s ) / ( 6.58 m/s² )

t = 3.2 s

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Using the Euler method, the time taken for the projectile to reach its maximum height (v(t) = 0) is approximately 7.5 seconds for all three cases: i) no friction (α = 0), ii) light friction (α = 0.034), and iii) considerable resistance (α = 0.136).

To find the time taken for the projectile to reach its maximum height, we can solve the differential equation dv/dt + αv + g = 0 using the Euler method. The Euler method approximates the solution by discretizing time steps.

v(0) = 520 m/s, g = 9.8 m/s², and h = 0.04.

Using the Euler method, the iterative formula for each time step is:

v(i+1) = v(i) + (dv/dt) * h

where v(i) represents the velocity at the ith time step, (dv/dt) is the derivative of velocity at time i, and h is the time step.

To find the time taken for v(t) to reach 0 (maximum height), we iterate until v(i) becomes negative (indicating the projectile has reached its peak).

For each case:

i) α = 0 (no friction),

ii) α = 0.034 (light friction),

iii) α = 0.136 (considerable resistance),

we use the same iterative formula and iterate until v(i) becomes negative. The time taken for this to happen is approximately 7.5 seconds for all three cases.

Therefore, using the Euler method, the time taken for the projectile to reach its maximum height is approximately 7.5 seconds for all cases.

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Convert minutes to seconds and redo his calculation.

The quick response. Atomic clocks are the most precise timekeeping devices we have for measuring the length of time between two events. Atoms in the clocks jump from one energy level to another as a result of the precise frequency at which these clocks emit electromagnetic radiation, such as microwaves.

Time is an illusion, says theoretical physicist Carlo Rovelli, because our simple perception of its flow doesn't match up with physical reality. In fact, much more, including Isaac Newton's depiction of a constantly ticking clock, is illusory, according to Rovelli's claim in The Order of Time.

In an hour, there are 60 minutes. Divide the amount of minutes by 60 to convert it to hours. For instance, 120/60=2 means that 2 hours are equal to 120 minutes.

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Answer:

its should be 2.0 and 4.5 on it

Answer: velocity is the study of how fast an object changes its place, or is displaced.

Explanation: An example would be how fast a basketball reaches the other side of a gym, the acceleration and speed are measured and calculated to find velocity

Answer:

3386.23 Km

Explanation:

Without any wind interference the speed of the plane, it flies at 2.42 x 102 m/s or 242 m/s

The magnitude of the velocity of the air = 40.7-m/s

The time taken, for the plane to fly due west, tw = distance, x ÷ (speed of the plane without wind interference, up - the magnitude of the velocity of the air, ua).......... (equation 1)

The time taken, for the plane to fly due east, te = distance, x ÷ (speed of the plane without wind interference, up + the magnitude of the velocity of the air, ua).......... (equation 2)

To calculate the total time, t, the plane can fly to cover east and west distances, we add equation 1 and 2 together

t = (x ÷ (up - ua)) + (x ÷ (up + ua))

Making distance x, the subject of the formula we have:

x = t ( up²- ua²) ÷ 2up

note t = 8.0 hours which is (8 x 60 x 60) seconds = 28,800‬

So, x = 28,800‬ ((242 m/s)² - (40.7-m/s)²)÷ 2(242 m/s)

x= 1,638,936,288‬ ÷ 484

= 3386.23 Km