potentially dangerous confined spaces such as tanks silos and manholes are purposely designed with quizlet

To solve this problem, we can apply the principle of conservation of momentum. According to this principle, the total momentum before the collision is equal to the total momentum after the collision, assuming no external forces are involved.

The momentum (p) of an object is given by the product of its mass (m) and velocity (v), i.e., p = mv.

Let's calculate the total momentum before the collision:

Total momentum before collision = (mass of blue marble * velocity of blue marble) + (mass of red marble * velocity of red marble)

                                = (3.5 g * 15 cm/s) + (1.2 g * 3.5 cm/s)

                                = 52.5 g·cm/s + 4.2 g·cm/s

                                = 56.7 g·cm/s

According to the conservation of momentum, the total momentum after the collision will also be 56.7 g·cm/s.

Let's calculate the momentum of the blue marble after the collision:

Momentum of the blue marble after collision = mass of blue marble * velocity of blue marble after collision

                                          = 3.5 g * 5.5 cm/s

                                          = 19.25 g·cm/s

Now, we can find the momentum of the red marble after the collision:

Momentum of the red marble after collision = Total momentum after collision - Momentum of the blue marble after collision

                                         = 56.7 g·cm/s - 19.25 g·cm/s

                                         = 37.45 g·cm/s

Finally, we can calculate the velocity of the red marble after the collision by dividing its momentum by its mass:

Velocity of the red marble after collision = Momentum of the red marble after collision/mass of red marble

                                        = 37.45 g·cm/s / 1.2 g

                                        ≈ 31.21 cm/s

Therefore, the magnitude of the final velocity of the red marble is approximately 31 cm/s.

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The spiral galaxies are characterized by the arms winding out from a central nucleus while the elliptical galaxies are characterized by their lack of structure or a central bulge.

Star formation refers to the process by which dense areas within molecular clouds in interstellar space, typically lasting tens of millions of years, form newborn stars. It takes a long time for stars to form, and this process is not well understood.

In comparison to spiral galaxies, elliptical galaxies have low star formation.

Furthermore, elliptical galaxies are made up of stars with a wide range of ages, indicating that the star formation process was rapid and early on in their history.

Spiral galaxies have more gas and dust in their disks than elliptical galaxies, and these are the sites of intense star formation.

The arms are believed to be regions of higher density of stars and interstellar material, as well as more significant gravitational interactions among stars, gas, and dust than in the rest of the disk.

Thus, spiral galaxies are sites of ongoing star formation while elliptical galaxies are mainly populated by old and evolved stars that no longer form. Therefore, spiral galaxies have a higher rate of star formation than elliptical galaxies.

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A portion of a worksheet window bounded by and separated from other portions by vertical or horizontal bars is a:B. Pane.B. Pane.

A pane is a section of a worksheet window that is enclosed and isolated from other sections by vertical or horizontal bars. As in a scroll pane, split pane, or frozen pane in a spreadsheet programme, a pane is a discrete area of a window that is divided from other sections by horizontal or vertical bars. Panes let users examine and interact with various sections of a large worksheet or document without having to scroll or explore the entire thing. To personalise the display and make it simpler to work with enormous volumes of data, panes can be moved, resized, or hidden.

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Hi there!

(A) The force that the ball exerts on Earth is equal in magnitude to the force that Earth exerts on the ball.

Gravitational force is an example of an action-reaction pair:

\(F_{1,2} = -F_{2,1}\)

Gravitational force is given by the equation:

\(F_g = \frac{Gm_1m_2}{r^2}\)

Plugging in the masses of the Earth and ball, gravitational constant, and radius will result in the SAME GRAVITATIONAL FORCE exerted by both objects on each other.

The action-oriented objective in a SMART goal setting system is option D) Increase my distance by one-half mile every other week.

This objective is specific, measurable, achievable, relevant, and time-bound. It is specific because it defines a clear action to be taken (increasing distance), measurable because it includes a specific metric (one-half mile), achievable because it is realistic to increase distance gradually, relevant because it aligns with the goal of completing a marathon, and time-bound because it specifies a regular interval (every other week) for progress tracking. Options A, B, and C are also specific and measurable but lack the regular interval and gradual progression aspects of a SMART goal.

In a SMART goal setting system, an action-oriented objective is one that focuses on specific actions to achieve the desired outcome. Among the given options, B) Run on the trail 4 times a week is the most action-oriented objective. This objective clearly outlines the action (running on the trail) and the frequency (4 times a week), making it easier to track progress and achieve the goal. The other options focus more on outcomes or results, which are important aspects of a goal, but they do not explicitly state the specific actions needed to reach those outcomes.

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The peak current through the 0.23 μF capacitor at 100 Hz is 0.14 A, and at 100 kHz, it is 140 A.

To calculate the peak current, use the formula I = V * ω * C, where I is the peak current, V is the peak voltage, ω is the angular frequency, and C is the capacitance.

a) For 100 Hz:
1. Convert frequency to angular frequency: ω = 2 * π * f = 2 * π * 100 Hz ≈ 628.3 rad/s.
2. Calculate the peak current: I = 9.60 V * 628.3 rad/s * 0.23 μF ≈ 0.14 A.

b) For 100 kHz:
1. Convert frequency to angular frequency: ω = 2 * π * f = 2 * π * 100,000 Hz ≈ 628,318.5 rad/s.
2. Calculate the peak current: I = 9.60 V * 628,318.5 rad/s * 0.23 μF ≈ 140 A.

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Explanation:

Note that resonance can only occur when the natural frequency is greater than the damping rate, multiplied by the square root of 2. If the damping is too large, then resonance cannot occur.

The speed with which the train reaches the rock slide is 19.36 m/s

This is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

Where

The initial velocity of the train can be obtained as illustrated below:

–1.6 = (0 – u) / 12.1

Cross multiply

0 – u = –1.6 × 12.1

– u = –19.36

Divide both sides by –1

u = –19.36 / –1

u = 19.36 m/s

Thus, the train uses 19.36 m/s to reach the rock slide

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The energy of an ultraviolet photon is 2.6 times greater than a red photon.

The energy of a given photon of light is calculated using the wavelength and the speed of light.

The energy of the a red photon at the given wavelength is calculated as follows;

\(E_r = \frac{hc}{\lambda} \\\\E_r = \frac{6.67 \times 10^{-34} \times 3 \times 10^8}{650 \times 10^{-9}} \\\\E_r = 3.078 \times 10^{-19} \ J\)

\(E_r = \frac{hc}{\lambda} \\\\E_r = \frac{6.67 \times 10^{-34} \times 3 \times 10^8}{250 \times 10^{-9}} \\\\E_r = 8.0 \times 10^{-19} \ J\)

\(= \frac{8.0 \times 10^{-19}}{3.078 \times 10^{-19}} \\\\= 2.6\)

Thus, the energy of an ultraviolet photon is 2.6 times greater than a red photon.

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The electrical potential between the anode and the cathode alters when a charged particle enters the tube. This shift in voltage in the electrical circuit results from the potential change in the tube and counts as a change.

When radiation strikes the gas inside the tube, it dislodges an electron from the gas particle and produces an ion pair. The tube's centre has a filament that draws electrons.

The ionisation process is used by a Geiger counter to measure and identify radiation. The chamber of the gadget contains a stable gas. This gas ionises when subjected to radioactive particles.

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The voltage of the circuit is 13 - 8j volts.

The circuit has a current of 5 + j^3 amps, which can be written as 5 + 3j + j^2.

The resistance is 3 - j^2 ohms, which can be written as 3 - 2j + j^2. The voltage of the circuit is calculated by multiplying the current by the resistance.

In this case, the voltage is 5 * 3 - 5j + 3j^2 - 2j^3 + j^4.

The imaginary unit j is defined as the square root of -1.

This means that j^2 = -1 and j^3 = -j.

Substituting these values into the expression for the voltage, we get 15 - 7j + j^2 - j^3 + j^4.

Simplifying the expression, we get 15 - 7j + 1 - j - 1 = 13 - 8j.

Therefore, the voltage of the circuit is 13 - 8j volts.

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With the given information on Marcia who is an electrical engineer who is testing the voltage of a circuit, the voltage of the circuit is 12 - 7j volts.

The voltage of the circuit is given as

voltage = (current) x (resistance)

First, multiply the complex current and resistance values together using the distributive law and the fact that the square of the imaginary unit j is -1.

(current) x (resistance) = (5+j3) x (3-j2)

= 5 x 3 + 5 x (-j2) + j3 x 3 + j3 x (-j2)

= 15 - j10 + 3j - 3

Simplify this expression, we get:

(5+j3) x (3-j2) = 12 - 7j

Plug this value into the voltage formula

voltage = (current) x (resistance) = (12 - 7j) volts

Therefore, the voltage of the circuit is 12 - 7j volts.

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Question is incomplete, find the complete question below

Marcia is an electrical engineer who is testing the voltage of a circuit given a certain current and resistance. She uses the following formula to calculate voltage: voltage = (current) (resistance) The circuit she tests has a current of5+j3 amps and a resistance of3-j2 ohms. What is the voltage of the circuit? 0 1 1 +Jl volts 0 21 +.l volts 0 21 'Jl volts 0 11—.lvolts

If the density of the object is less than 1000 kg/m³, then it will float in water. If it is greater than 1000 kg/m³, then it will sink in water.

Density is a measure of the mass of an object per unit of volume. It is a physical property that can be used to compare different materials. Density is typically measured in kilograms per cubic meter (kg/m³). Density can also be expressed in grams per cubic centimeter (g/cm³) or pounds per cubic foot (lb/ft³).

The density of the object can be calculated by dividing the total mass of the object by its volume. Since the object is floating in water, three-fourths of its volume is submerged below the surface. This means that the total volume of the object is equal to four-fourths of its volume above the water plus three-fourths of its volume below the water, which is the same as saying it is equal to one unit of volume.
The density of the object can then be calculated by dividing the total mass of the object by one unit of volume. This will give the density of the object in kg/m³, which can then be compared to the density of water, which is 1000 kg/m³. If the density of the object is less than 1000 kg/m³, then it will float in water. If it is greater than 1000 kg/m³, then it will sink in water.

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Answer:

M= -10/4

M = -5/2

-5/4 + m = -15/4

Explanation:

3/4 + m = -7/4

Subtract 3/4 from both sides

3/4 + m - 3/4 = -7/4 - 3/4

m = (-7-3) / 4

m = -10/4

m = -5/2

Check the options

11/4 + m = -1/4

m = -1/4 - 11/4

m = (-1-11) /4

m = -12/4

m = -3

-5/4 + m = -15/4

m = -15/4 + 5/4

m = (-15+5) /4

m = -10/4

m = -5/2

Answer:

is the process of spreading

Answer: An element with 5 electrons is more likely to either gain 3  electrons in its’ outer-most valence electron shell

Explanation: To determine whether an element with 5 electrons is more likely to gain 3 or lose 5 electrons in its outermost valence electron shell, we can use the Lewis Dot Structure.

1. Draw the symbol of the element. For example, let's consider the element with 5 electrons as X.

2. Determine the number of valence electrons for the element. Since the element has 5 electrons, it will have 5 valence electrons.

3. Represent the valence electrons as dots around the symbol of the element. In this case, we would draw 5 dots around the symbol X.

4. Analyze the electron configuration to determine the stability of the element.

- If the element gains 3 electrons, it will have a total of 8 valence electrons. This would result in a stable electron configuration, similar to the nearest noble gas. For example, if the element is in Group 15, gaining 3 electrons would give it the electron configuration of the noble gas, Neon (2, 8).

Answer:

1. Your personality traits relate to your zodiac sign.

2. Who you are compatible with in relationships depend on your zodiac sign.

3. Your strengths and weaknesses depend on your sign.

Answer:

W = 1250 J = 1.25 KJ

Explanation:

The work done by the boy is due to the change in the position of the cement vertically. Hence, the work done in this case will be equal to the potential energy of the cement:

\(W = P.E\\W = mgh\)

where,

W = Work done = ?

mg = W = weight of cement = 500 N

h = height covered = 2.5 m

Therefore,

\(W = (500\ N)(2.5\ m)\)

W = 1250 J = 1.25 KJ

Answer:

you have to match the letters in the picture to the list of energy types

Answer:

a.  Frequency is 5.45 x 10^14 hz

b.   The period = 1.8 x 10^-15 sec  {or 1.8 femptoseconds]

Explanation:

The velocity of an electromagnetic wave is given by the product of the wave's frequency(f) times its wavelength(λ).  

V = λ f     where,

V is the wave speed,

f is the wave frequency,

λ is the wavelength.

To find frequency, rearrange to:

f = V/ λ

Light travels at 3.00x10^8 m/sec.

λ is 5.50 x 10^-7 m

f = (3.00x10^8 m/sec)/(5.50 x 10^-7 m)  meters cancels, secs is on the bottom]

f = (3.00/5.50)*(10^15)  [The base 10 exponent on the bottom ius subtracted from the one on top:  98-(-7)) = 15)  

f = 0.545 x 10^15 1/s or hz

f = 5.45 x 10^14 hz

b.  The period of a wave is the inverse of it's frequesncy.  It is the time it takes for 1 wave to pass.  Invert the frequency:

 Period = 1/f

  Period =  1/(0.545 x 10^15 1/s)

Period = 1.8 x 10^-15 sec  {or 1.8 femptoseconds]

Answer:

8.74 m

Explanation:

W = FΔx

376 = 43(Δx)

8.74 = Δx

Hey there everyone!

_____________________________________________________

Answer:

So, if you have the following to choose from:

O 368 m

O 44.6 m

O 384 m

O 3170 m

44.6 m (aka. Option B) is correct.

_______________________________________________________

Step By Step Explanation:

1. F = 8.43 N

2. W = 376 J

3. W = F x d

4. 376 J = 8.43 N × d

5. d = 44.6 m ← Our Final Solution

_______________________________________________________

Hope this helps! If you still need help on this, feel free to check out the flash cards I made below.

h t t p s : / / q u i z l e t . c o m / 7 6 4 3 6 7 9 6 0 / p h y s i c a l - s c i e n c e - 2 2 - f o r c e - a n d - w o r k - r e l a t i o n s h i p s - f l a s h - c a r d s / ? n e w

The free metal electrons in a wire collide with the particles transporting the charge through the wire.

Strong metallic connections keep the constituent parts of a metal together. The particles are arranged in a predictable pattern and are close together. The outside electrons of metal atoms are loose, creating a "sea" of delocalized or free negative charge around the densely packed positive ions.

Hence, the flow of charged particles or charge carriers is what constitutes electric current. Any charged particle, such as an electron, proton, or ion, can serve as the charge carrier. In an electric circuit, electrons typically carry the charge.

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Newton's optics experiment observation and intervention. In order to make his observations, Newton used the theory of light passing through prisms and the rays that were sent by them. It was revealed that light has a variety of properties and features.

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I added an image of the answers/ Hope this helps! good luck on it.

Answer:

1.2 N

Explanation:

Given that,

We are asked to calculate force exerted (F).

\(\longrightarrow\) F = ma

\(\longrightarrow\) F = (0.15 × 8) N

\(\longrightarrow\) F = 1.2 N

When we talk about a correlation coefficient r, then we should know that it ranges from -1 to 1, where -1 is a strong negative correlation, 0 means there is no correlation at all and 1 is a strong positive correlation.

Therefore, a graph showing data whose r-value is most likely closest to 0 is a graph that shows no correlation at all.

Graph (d) in the given figure shows the data whose r-value is most likely closest to 0.

We can observe that there is no particular pattern or trend in the scattered points in the graph.

Therefore, the correlation between the variables X and Y is weak, and hence the r-value is close to 0.

Graphs (a), (b), and (c) show strong positive correlations as the values of r are closer to 1.

Graph (e) shows a strong negative correlation as the value of r is closer to -1. Hence, the answer is an option (d).

The scatter plot is a diagram that is used to represent the correlation between two variables.

A scatter plot is a graph that uses dots to represent individual pieces of data.

The axis of the scatter plot represents the value range for each variable.

The scatter plot graphically represents the correlation that exists between the variables. The correlation can be negative, positive, or none.

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Answer:to sum up what the guy said above me its D

Explanation:

i got it right on edg

The first law of thermodynamics provides a fundamental principle for energy conservation in thermodynamic systems. It states that the change in internal energy (ΔU) of a system is equal to the heat added to the system (q) minus the work done by the system (w).

According to the first law of thermodynamics, the energy of a system can neither be created nor destroyed, only transferred or converted from one form to another. As a result, there are two ways to quantify energy change in a system: as a result of heat transfer and as a result of work done. The first law of thermodynamics is expressed mathematically as follows:

ΔU = q - w

where ΔU is the change in internal energy, q is the heat added to the system, and w is the work done by the system.

Therefore, to express q in terms of ΔU and w:q = ΔU + w. This equation allows us to quantify the relationship between heat, work, and the change in internal energy of a system, providing a basis for analyzing and understanding energy transfers in various processes.

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Fibers of the sweater lose electrons because electrons are leave it.

One of the ways of charging a body is by friction. Charges are transferred from one body to another when an object is rubbed against another. This is charging by friction.

A sweater has negative charges hence when the balloon is rubbed against the sweater, fibers of the sweater lose electrons because electrons are leave it.

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Explanation:

I think its true

hope it helps