Which vector below goes from (0, 0) to (-2, 3)?

The answer is five dots.

sorry i  meant three dots not five

The weight of the object from the information provided in the question is  1500 N.

We know that pressure = Force/area. We have the following information from the question;

Pressure =500 Nm-2

Area = 3 m2

Hence;

Force = Pressure × area

Force = 500 Nm-2 × 3 m2

Force = 1500 N

Hence, the weight of the object is 1500 N

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Answer: hope this helps

Explanation:

If the final velocity of the ball is 2.5 m/s, the final velocity of the bowling pin is 7.8125 m/s. ​

According to the principle of momentum conservation, momentum is only modified by the action of forces as they are outlined by Newton's equations of motion; momentum is never created nor destroyed inside a problem domain.

According to the principle of momentum conservation,  total momentum of an system remains conserved.

Total initial momentum = total final momentum

5 kg × 5 m/s + 1.6 kg × 0 m/s = 5 kg × 2.5 m/s + 1.6 kg × v

1.6 kg × v  = 5 kg × 5 m/s -  5 kg × 2.5 m/s

v = (5 kg /1.6 kg) (5 m/s - 2.5 m/s)

= 7.8125 m/s

Hence, If the final velocity of the ball is 2.5 m/s, the final velocity of the bowling pin is 7.8125 m/s. ​

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At constant temperature and pressure, ΔSuniv and ΔGsys are related through the Gibbs free energy equation, with positive ΔSuniv indicating a spontaneous process and negative ΔSuniv indicating a non-spontaneous process.

The relationship between âsuniv and âgsys at constant temperature and pressure can be explained through the second law of thermodynamics. âsuniv represents the total change in entropy of a system and its surroundings, while âgsys represents the change in entropy of the system alone. Therefore, the relationship between âsuniv and âgsys can be expressed as âsuniv = âgsys + âssurr, where âssurr represents the change in entropy of the surroundings.

The change in the total entropy of the universe (âsuniv) is equal to the change in entropy of the system (âgsys) plus the change in entropy of the surroundings (âssurr). This relationship highlights the importance of considering not only the system being studied, but also its interaction with the surrounding environment.  At constant temperature and pressure, the relationship between âsuniv and âgsys can be described as âsuniv = âgsys + âssurr, emphasizing the significance of the second law of thermodynamics in understanding the behavior of thermodynamic systems. This relationship can be further explored and applied in various fields such as chemistry, physics, and engineering.

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Answer:

1.) Cation

2.) Ion

3.) Anion

Explanation:

A passenger rushes down onto a subway platform and finds her train already departing. she stops and watches the cars go by. each car is 8.60 m long. the first moves past her in 2.10 s and the second in 1.83 s. The constant acceleration of the train is 236.16 m/s².

To calculate the constant acceleration of the train, we can use the following equation:

acceleration = 2 * (change in distance) / (change in time)²

Given:

Length of each car = 8.60 m

Time taken for the first car to pass = 2.10 s

Time taken for the second car to pass = 1.83 s

Step 1: Calculate the change in distance between the two cars:

change in distance = length of each car = 8.60 m

Step 2: Calculate the change in time between the two cars:

change in time = time taken for the second car to pass - time taken for the first car to pass

change in time = 1.83 s - 2.10 s = -0.27 s (The negative sign indicates that the second car passed before the first car)

Step 3: Calculate the acceleration:

acceleration = 2 * (change in distance) / (change in time)²

acceleration = 2 * 8.60 m / (-0.27 s)²

acceleration = 2 * 8.60 m / (0.27 s)²

acceleration = 2 * 8.60 m / 0.0729 s²

acceleration = 17.2 m / 0.0729 s²

acceleration = 236.16 m/s²

Therefore, the constant acceleration of the train is approximately 236.16 m/s².

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(a) This is because the lowest three standing wave vibration frequencies for a closed-open pipe correspond to odd harmonics (1st, 3rd, and 5th).

As for the length of the pipe, we can use the formula L = (n/4) * wavelength, where n is the harmonic number and wavelength is the distance between two adjacent nodes. For the first harmonic (n=1) with a frequency of 120 Hz, the wavelength is four times the length of the pipe. Thus, L = (1/4) * wavelength = (1/4) * (4L) = L. Solving for L, we get L = wavelength/4 = (speed of sound)/(4 * frequency) = 0.71 meters (assuming the speed of sound in air is 343 m/s).

(b), the frequencies of the first two harmonic vibrations on a pipe of the same length but of the other type (open-closed) can be found using the formula f = (n * v)/(2L), where v is the speed of sound in air and n is the harmonic number. For the first harmonic (n=1), we have f = v/(2L) = (343 m/s)/(2 * 0.71 m) = 242 Hz. For the second harmonic (n=2), we have f = 2v/(2L) = (2 * 343 m/s)/(2 * 0.71 m) = 485 Hz.

Therefore, the frequencies of the first two harmonic vibrations on an open-closed pipe of the same length are 242 Hz and 485 Hz, respectively.

Hence, The formula for the frequency of a standing wave in a pipe depends on the speed of sound, the length of the pipe, and the harmonic number.

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Answer:

Mechanical force

Explanation:

Slope of the IV graph equals (50 -(50)) x 10-3/ (2.0-0) x 10-12; resistance equals 1. R = 5.0 x10 10 conductance = 1/resistance = 1/ 5.0 x10 10 = 2x10-11 equivalent resistence of 1000 parallel channels open at the same point.

One channel's resistance divided by 1000 equals 5.0 x 1010/1000 or 5.0 x 107 for equivalent conductance of 1000 channels opened at the same location.

= 1/ 5.0 x107\s = 2.0 x10-8 5..

Define string density.

The mass of the string divided by its length is its density. length times mass. Additionally, by examining the connection between the tension, frequency, length, and amount of segments in the transverse wave, the linear mass density of both the thread can really be determined.

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Answer:

16 m

Explanation:

Given:

v₀ = 4 m/s

a = 4 m/s²

t = 2 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (4 m/s) (2 s) + ½ (4 m/s²) (2 s)²

Δx = 16 m

Answer:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

Answer:

D) The contraction of objects in space

Explanation:

A) Expansion of the universe as originated from the Big Bang is an important evidence, as B) the Cosmic microwave background which is thought to be left over from the Big Bang. The right proportion of hydrogen and helium as unprocessed material that has been detected as the basic elements from where the universe started.

The only out of context option is option D

The main difference between Kinetic energy and Potential energy is that kinetic energy refers to movement while potential energy refers to storage.

Kinetic energy is a type of energy in motion or energy in movement such as a turbine (mechanical energy), while Potential energy refers to the energy that is stored to be used when required (e.g. chemical bonds of foods).

Therefore, with this data, we can see that  Kinetic energy is used as movement, while Potential energy is stored to be used in the future.

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If a particle moves along a straight line, if the velocity of the particle v = 2t², then the acceleration versus time graph will be a straight line, therefore the correct answer is option C,

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As we know the rate of change of velocity is known as acceleration

acceleration =change in velocity/change in time

As given in the problem If a particle moves along a straight line, if the velocity of the particle v = 2t²,

acceleration = dv/dt

                     =d ( 2t²)/dt

                     =4t

Thus, the acceleration versus time graph would be a straight line.

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Bonjour à toi,

An electrically neutral object does not mean that it has no electrical charge. If today we find some elementary particles without electric charge (Higgs Boson, photon and gluon), the neutrality of the atom and molecules, or more globally of matter is due to various processes. An atom is electrically neutral because the electric charges that compose it compensate each other (as much negative charge, the electron, as positive, the proton). Ionic molecules arrange themselves so that the electric charges that compose them compensate each other.

Answer:

W = 600 N

Explanation:

The mechanical advantage of any machine is the ratio of the load or weight to the effort applied. Hence, the general formula for mechanical advantage is as follows:

M.A = W/P

where,

M.A =Mechanical Advantage of Hammer = 10

W = Maximum force that could be generated = ?

P = Force created by me = 60 N

Therefore,

10 = W/60 N

W = 10*60 N

W = 600 N

There are 1,048,576 possible outcomes (microstates) when flipping 20 fair coins. The probability of getting the sequence "HTHHTTTHTHHHTHHHHTHT" in exactly that order is approximately 9.5367e-07.

a) There are 2 possible outcomes (heads or tails) for each coin flip, and since there are 20 coin flips, the total number of possible outcomes, or microstates, is given by 2²⁰

Answer: 2²⁰= 1,048,576 possible outcomes.

b) To calculate the probability of getting the sequence "HTHHTTTHTHHHTHHHHTHT" in exactly that order, we need to determine the probability of obtaining each individual outcome (head or tail) and multiply them together.

Since each coin flip is independent and has a 1/2 chance of resulting in either heads or tails (assuming the coins are fair), the probability of obtaining the desired sequence is (1/2)²⁰

Answer: (1/2)²⁰≈ 9.5367e-07

c) To calculate the probability of getting exactly 12 heads and 8 tails in any order, we need to determine the number of ways to arrange 12 heads and 8 tails within the 20 coin flips.

This can be calculated using the binomial coefficient, also known as "n choose k." The formula for the binomial coefficient is:

C(n, k) = n! / (k! * (n-k)!)

Where n is the total number of coin flips and k is the number of heads.

Using this formula, the probability can be calculated as follows:

P(12 heads and 8 tails) = C(20, 12) * (1/2)^20

Calculating C(20, 12):

C(20, 12) = 20! / (12! * (20-12)!)

          = 20! / (12! * 8!)

          = (20 * 19 * 18 * 17 * 16 * 15 * 14 * 13) / (8 * 7 * 6 * 5 * 4 * 3 * 2 * 1)

          = 125,970

P(12 heads and 8 tails) = 125,970 * (1/2)^20

Answer: P(12 heads and 8 tails) ≈ 0.12013435364 (approximately)

a) There are 1,048,576 possible outcomes (microstates) when flipping 20 fair coins.

b) The probability of getting the sequence "HTHHTTTHTHHHTHHHHTHT" in exactly that order is approximately 9.5367e-07.

c) The probability of getting exactly 12 heads and 8 tails in any order is approximately 0.12013435364.

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Answer:

B. 90km/hr

Explanation:

The formula for finding velocity =

Displacement/time

The displacement of the car has been given to be = 1215 km West

Time it took to go from Dallas to Paso = 13.5 hours

Then velocity = 1215/13.5

= 90

Therefore velocity = 90km/hour

Option B is the correct answer to this question.

Thank you!

The energy of the photons in the light is greater than the work function of the photocell (2.38 eV), the photocell will function with this wavelength of light, and the kinetic energy of the photoelectrons released from the photocell is 0.98 eV.

To determine if the photocell will function with the given wavelength of light, we need to compare the energy of the photons in the light to the work function of the photocell. The energy of a photon will be given by:

E = hc/λ

where h is Planck's constant, c is the speed of light, and λ is the wavelength.

Substituting the values given, we get:

E = (6.626 x 10\(10^{-34}\) J s) × (3.00 x 10⁸ m/s) / (633 x\(10^{-9}\) m)

E = 3.14 x \(10^{-19}\) J

Converting this energy to electron volts (eV), we get:

E = 3.14 x \(10^{-19}\) J / 1.60 x \(10^{-19}\) J/eV

E = 1.96 eV

Since the energy of the photons in the light is greater than the work function of the photocell (2.38 eV), the photocell will function with this wavelength of light.

The kinetic energy of the photoelectrons released from the photocell is given by:

K.E. = E - W

where E is the energy of the photon and W is the work function of the photocell.

Substituting the values given, we get:

K.E. = (3.14 x \(10^{-19}\) J) / (1.60 x \(10^{-19}\) J/eV) - 2.38 eV

K.E. = 0.98 eV

Therefore, the kinetic energy of the photoelectrons released from the photocell is 0.98 eV.

If the energy of the photons in the light had been less than the work function of the photocell, then the photocell would not have functioned. In that case, the threshold frequency (ν) would be given by:

ν = W/h

where h is Planck's constant and W is the work function of the photocell. Once the threshold frequency is known, we can use the formula E = hν to find the corresponding wavelength.

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The buoyant force is a non-conservative force, which means that it does not obey the law of conservation of energy. This means that the energy associated with the buoyant force is not stored and can be dissipated by doing work, such as when a submerged object is pushed upward by the buoyant force. As such, there is no potential energy associated with the buoyant force, and thus the answer to part (b) is no.

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The moon’s orbit is closer to Earth is the event which occurs during high tide.

This occurs once in a month and is the phenomenon in which the moon is

closest to the Earth. This brings about an increase in the tide levels of the

water bodies.

This is the reason why the option B is the most appropriate option as the

moon’s orbit being closer to Earth also signifies a close proximity between

the moon and the earth

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Answer: The answer is: b) The moon’s orbit is closer to Earth.

Explanation: I have my ways :>

Have a great day!

-Sunny

Answer:408

Explanation:

Answer:

  382.2 N

Explanation:

You want the normal force on an object weighing 437 N situated on an inclined plane 29° from the horizontal.

The vector 437 N straight down can be decomposed to vectors parallel to the plane and perpendicular to the plane. That decomposition looks like ...

  (perpendicular, parallel) = 437 N · (cos(29°), sin(29°)) ≈ (382.2, 211.9) N

The normal force on the object is about 382.2 N.

According to special relativity, one can travel at increased rates. However, this is only possible when moving at very high speeds approaching the speed of light. When an object moves at high speeds, the time slows down, and the length of the object appears to be shortened.

These observations are known as time dilation and length contraction. Time dilation refers to the difference in the elapsed time measured by two observers, where one is stationary, and the other is moving at a constant velocity relative to each other. The faster the moving observer, the slower time appears to be for them. Length contraction, on the other hand, refers to the phenomenon where an object appears to be shorter in length when it's moving at high

This effect is more noticeable as the speed of the object approaches the speed of light. As a result, traveling at very high speeds can allow one to cover great distances in less time, which can be used for space exploration and other scientific research. However, it's worth noting that the effects of relativity are only noticeable at very high speeds, which are currently impossible to achieve with our current technology.

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According to an observer on Earth, the trip took approximately 5.2 years.

According to special relativity, time dilation occurs as an object approaches the speed of light. This means that time appears to pass more slowly for an object moving relative to an observer than it does for the observer.

In this scenario, the spaceship travels to a star that is 4.5 light-years from Earth at one-half the speed of light. To determine the time it took for the trip according to an observer on Earth, we can use the time dilation equation:

t = t_0 / √(1 - v^2/c^2)

where t_0 is the proper time (the time experienced by an observer on the spaceship), v is the velocity of the spaceship, and c is the speed of light.

Plugging in the values, we get:

t = 4.5 years / √(1 - (0.5c)^2/c^2)

t = 4.5 years / √(1 - 0.25)

t = 4.5 years / √0.75

t = 4.5 years / 0.866

t ≈ 5.2 years

Therefore, according to an observer on Earth, the trip took approximately 5.2 years.

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The total displacement of Usain Bolt is -180 meters. For the total displacement of Usain Bolt, we need to convert the distances given into a consistent unit, such as meters.

590 m west is already in meters.

43000 cm east can be converted to meters by dividing by 100 since 100 cm is equal to 1 meter:

43000 cm / 100 = 430 m east.

1.2 km west can be converted to meters by multiplying by 1000 since 1 km is equal to 1000 meters:

1.2 km × 1000 = 1200 m west.

Total displacement = (590 m west) + (430 m east) + (1200 m west).

To simplify the calculation, we can combine the displacements in the same direction:

Total displacement = (590 m - 1200 m) + 430 m.

Total displacement = -610 m + 430 m.

Total displacement = -180 m.

Therefore, the total displacement of Usain Bolt is -180 meters. The negative sign indicates that his overall direction is west.

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Answer:

A. 4.5 x 10^-5 kg.m2

B. 108 x 10^-3 kg.m2

C. 54 x 10^-5

Explanation:

A. I = m(r^2)

point mass m = 0.005 g = 5 x 10^-6 kg

I = (5 x 10^-6 kg) x (3 m)^2 = (5 x 10^-6 kg) x 9 m^2 = 4.5 x 10^-5 kg.m2

B. I = m(r^2)

point mass m = 0.3 kg = 3 x 10^-1 kg

I = (3 x 10^-1 kg) x (0.6 m)^2 = (3 x 10^-1 kg) x 0.36 m^2 = 108 x 10^-3 kg.m2

C. KE = 1/2I(w^2)

KE = 1/2(3 x 10^-2 kg.m^2)(0.6 rad/s)^2 = 54 x 10^-5

The required total flux through the curved side of the cylinder is calculated to be Q/√2∈₀.

On the cylinder's axis, there is a point charge Q.

Length of the cylinder is L.

The cylinder's length is equal to its diameter.

The diagram follows as,

R is the radius of the cylinder.

The cone OABCO forms the following solid angle at O:

dΩ = 2 π (1 - cos θ)

Ф = Q/4π∈₀ dΩ

Ф = Q/4π∈₀ [2π (1 - cos θ)]

Ф = Q/4π∈₀ [2π (1 - cos 45°)]

Ф = Q/2∈₀ (1 - 1/√2)  

where,

∈₀ is permittivity

Due to symmetry, the electric flux for the left surface would be the same.

Consequently, the circular surfaces' electric flux is,

Ф' = 2 Ф = 2 × Q/2∈₀ [1 - 1/√2] = Q/∈₀ [1 - 1/√2]

Gauss law now yields the following total electric flux through the cylinder:

Ф total = Q/∈₀

The total flux through the cylinder is made up of the flux through the two circular surfaces and the curved surface because the cylinder has a curved surface as well as two circular surfaces.

Let Фc be the flux through the curved surface.

Thus we have,  

Ф total = Фc + Ф'

Putting in the values,

Q/∈₀ = Фc + Q/∈₀ [1 - 1/√2]  

Фc = Q/√2∈₀

Thus, the flux through the curved side is Q/√2∈₀.

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Answer:

D. Humidity refers to the amount of water vapor in the air

Answer: A

Explanation: Humidity is a measure of dew in the air.