Calculate the root-mean-square (rms) speed (in m/s) of propane (C3H8) gas molecules at a temperature of 280 K.

Answer:

8.5 feet.

Explanation:

A sketch of the position of the three people gives a right angled triangle. The hypotenuse of the triangle gives the resultant displacement, while the two other sides are 6 feet each.

The resultant displacement, R, is the overall displacement covered by the doctor. This can be determined by;

R = \(\sqrt{d_{1} ^{2} + d_{2} ^{2} }\)

where: \(d_{1}\) = 6 feet and \(d_{2}\) = 6 feet.

Thus,

R = \(\sqrt{6^{2} + 6^{2} }\)

  = \(\sqrt{72}\)

R = 8.49

The resultant displacement covered by the doctor is 8.5 feet.

Answer:

first law is your answer, if I'm not wrong

Answer:

i think it's the first law of motion :)

Explanation:

Answer:

No work

Explanation:

During the time of holding the can stationary, no work is being done by the person carrying the can.

The can is simply at rest.

  Work done  = force x distance

In the instance given in this problem, only when the paint was lifted up is work done.

When the paint is  stationary and being supported by the person, no work is done.

Answer:

d

Explanation:

Ya gon find the Kenitic Energy first

K=½mv²===> K=½×0.2×(0.2)²===> 0.1(0.04)===> 0.004

and now the replacement:

0.004=½×0.4V²====> v²=0.02===> V=0.14m/s

(a) The amplitude of the wave is 0.2 m.

(b) The period of the wave is  4 s.

(c) The wavelength of the wave is 100 m.

(a) The amplitude of the wave is the maximum displacement of the wave.

amplitude of the wave = 0.2 m

(b) The period of the wave is the time taken for the wave to make one complete cycle.

period of the wave = 5.5 s - 1.5 s = 4 s

(c) The wavelength of the wave is calculated as follows;

λ = v / f

where;

f = 1/t = 1 / 4s = 0.25 Hz

λ = ( 25 m/s ) / 0.25 Hz

λ = 100 m

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The efficiency of the ramp is 80% and the mechanical advantage is 2.

To solve this problem, we can use the formulas for efficiency and mechanical advantage:

Efficiency = (output work / input work) x 100%

Mechanical Advantage = output force / input force

First, we need to find the output force and output work of the ramp.

The output force is the weight of the box, which is 1200 N.

The output work is the force applied by the output force over the distance it moves. Since the box moves a distance of 1.0 m up the ramp,

the output work is:

Output work = output force x output distance

Output work = 1200 N x 1.0 m

Output work = 1200 J

Next, we need to find the input force and input work of the ramp.

The input force is the force applied by the man, which is 600 N.

The input work is the force applied by the input force over the distance it moves. Since the man moves a distance of 2.5 m along the ramp,

the input work is:

Input work = input force x input distance

Input work = 600 N x 2.5 m

Input work = 1500 J

Now we can calculate the efficiency and mechanical advantage:

Efficiency = (output work / input work) x 100%

Efficiency = (1200 J / 1500 J) x 100%

Efficiency = 80%

Mechanical Advantage = output force / input force

Mechanical Advantage = 1200 N / 600 N

Mechanical Advantage = 2

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It will take our ship 3 year to  travel from Earth to Mars if the speed is 3,050 km/hr.

The distance travelled per unit of time is most commonly known as speed. It describes how quickly an object moves. The magnitude of the velocity vector is represented by speed, which is a scalar quantity. It's aimless. A faster moving object has a higher speed. It is moving slower if it has a lower speed. It has no speed if it is not moving at all.

The following formula is used to calculate the constant velocity of an object moving in a straight line:

S = d / t

Distance from Earth to Mars = Distance from Mars to Sun - Distance from Earth to Sun

Distance from Earth to Mars = 230,000,000 km - 150,000,000 km

= 2.3 × 10⁸ - 1.5 × 10⁸

=  (2.3-1.5) × 10⁸

= 0.8 × 10⁸

= 8 × 10⁷ km

Time =  Distance ÷ Speed

Given speed = 3,050 km/hr

Distance = 8 × 10⁷ km

Putting the values,

Time =  80,000,000 ÷ 3,050

Time = 26229.51

24 hours a day, so

26229.51/24

= 1092.9

365 days a year, so

1092.9/365

= 2.99 ≈ 3 years

Thus, It will take our ship 3 year to  travel from Earth to Mars if the speed is 3,050 km/hr.

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The acceleration of the system is 2.77 m/s² and the tension in the string is 127.4 N, given the provided values.

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Answer: the answer is in the picture

Explanation:

Answer:

C

Explanation:

i did the test and got 100 :)

Answer:

Direction and Size both are required .

Answer:

C and D I think.

Have a good day:)

If airflow lifts a 3.6 kg bird 50 m up, then the work done by the airflow is 1764 joules.

Given,

Work done against the friction (W) =?

We know that :

Work done against the friction (W) = force × displacement

W = F × d

W = m × g x d        [ Force = mass × acceleration due to gravity ]

W = 3.6 × 9.8 × 50      [ g = 10 m/s2 ]

W = 1764 joules

Hence,  the work done by the airflow is 1764 joules.

A force is an influence that has the power to alter an object's motion. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest.

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a. It takes 13.94 seconds to change your displacement by 18.0m east.

b. It takes 28.9 seconds to change your displacement by 32.0m north,

In geometry and mechanics, a displacement is described as a vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion.

To change your displacement by 18.0m east, we use the

X direction = \(\frac{18}{1.70 cos 22.7}\)

x direction = 13.94 seconds

To change your displacement by 32.0m north, we use the

Y direction = \(\frac{32}{1.70 sin 22.7}\)

y direction= 28.9 seconds

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Answer:

4.41N or 4.5N (check explanation)

Explanation:

450g = 0.45kg

F = ma

Using 10m/s² = 10(0.45) = 4.5N

Using 9.8m/s² = 9.8(0.45) = 4.41N

Answer:

W = 15 N

Explanation:

The moments from the center mus be equal for balance to occur

 center is at 25 cm  ( for a 1/2 meter stick)

moment one :   15 cm * 20 N

moment two :   20 cm * W         these must be equal

   15 * 20 = 20 * W        W = 15 N

Answer:

6.2 × 10^-11 m

Explanation:

1 eV = 1.602 × 10-19 joule

2.00 × 104 ev. = 2.00 × 10^4 eV × 1.602 × 10^-19 joule/1eV

= 3.2 × 10^-15 J

From;

E= hc/λ

λ = hc/E

λ = 6.6 × 10^-34 × 3 × 10^8/3.2 × 10^-15

λ = 6.2 × 10^-11 m

The information we will need to demonstrate that an object is in motion include;

An object is in motion when it changes its position with time, relative to a stationary object.

Mathematically, we can use the following equation to demonstrate the motion of an object.

v = Δx / Δt

where;

So the data we will need to demonstrate that an object is in motion include;

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The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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Answer:

t = 1.32 s

Explanation:

We are given;. Frequency of C4 note; F_c = 262 Hz

In conversions, we know that 1 Hz = 1 cycle/s

Thus, F_c = 262 cycles/s

Now, we want to find out how much time it takes for 346 air pressure maxima to pass a stationary listener.

346 air pressure maxima denotes that the air pressure maxima is 346 cycles.

Thus, time will be;

t = 346 cycles/262 cycles/s

t = 1.32 s

The time taken for the musical note to pass the stationary listener is 1.32 s.

The given parameters:

The frequency of a sound wave is defined as the number of cycles completed per second by the wave.

\(F = \frac{n}{t}\)

where;

The time taken for the musical note to pass the stationary listener is calculated as follows;

\(262 = \frac{n}{t} \\\\t = \frac{n}{262} \\\\t = \frac{346}{262} \\\\t = 1.32 \ s\)

Thus, the time taken for the musical note to pass the stationary listener is 1.32 s.

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Answer:

Have a great day!

Explanation:

Barometers. A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.

Answer:

atmospheric  pressure

Explanation:

Answer:

Potholes, large cracks, and a generally bumpy (and not smooth) road.

Explanation:

Rural roads tend to be poorly kept as they are not usually paid for by the city's tax money.

Poor road characteristics can include;

Potholes, fallen trees, uncovered water drains, and shoulder drop off (the shoulder – right side of the road past the solid white line – drops more than two inches from the road's surface).

SOURCE:

https://www.edgarsnyder.com/car-accident/cause-of-accident/bad-roads/hazardous-roads-types.html

Answer:

x=v.t

The answer: Distance= Speed x Time

And also

Time = Distance/Speed

Speed= Distance/Time

Answer:

In the given equation y=Asin(ωt−kx)

Since, trigonometric function is a dimensionless quantity. So, (ωt−kx)is also dimensionless quantity.

So,

(ωt−kx)=1

ωt=1

[ω]= 1=[T] ^−1

[T]

kx=1

[k]= 1=[L]^ −1

[L]

Answer:

B. Weight

Explanation:

Weight is the force of gravity exerted on a body

OR

It's the force exerted on a body by the influence of the earth's gravitational force

Answer:

• The amount of heat required to melt ice and raise the temperature of water T^oCToC is

Q=mL_f+mc\Delta TQ=mLf+mcΔT

Here m=1.5 kgm=1.5kg

L_f=3.33*10^5 J/kgLf=3.33∗105J/kg is Latent heat of fusion of ice.

c=4186 J/kg.^oCc=4186J/kg.oC is heat capacity of water.

\Delta T=50 ^oC-0^oC=50^oCΔT=50oC−0oC=50oC

So,

Q=(1.50)[3.33*10^5 +(4186)(50)]=8.13*10^5 JQ=(1.50)[3.33∗105+(4186)(50)]=8.13∗105J

The volume in milliliters of a 5.13g sample of a solid with a density of 3.59 g/mL is 1.43millitres.

The volume of a gas can be calculated from the density using the following expression:

Density = mass ÷ volume

Density refers to the measure of the mass of matter contained by a unit volume. According to this question, a 5.13g sample of a solid with a density of 3.59 g/mL.

3.59 = 5.13 ÷ V

3.59V = 5.13

V = 1.43millitres

Therefore, 1.43millitres is the volume of the sample of solid.

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The acceleration of the falling object with a mass of 2.55 kg that encounters 4.0 N of air resistance is 1.57m/s².

Acceleration is change of velocity with respect to time (can include deceleration or changing direction).

The acceleration of a body can be calculated by using the following expression;

a = F/m

Where;

According to this question, a mass of 2.55 kg encounters 4.0 N of air resistance. The acceleration of the object can be calculated as follows:

a = 4N ÷ 2.55kg

a = 1.57m/s²

Therefore, 1.57m/s² is the acceleration of the object.

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Answer:

The description is true because the plane has to be moving order for it to fly. :)