*please refer to photo*
Use meters and seconds for all calculations. Show the appropriate units for measured and calculated values
Based on the calculations, the average velocity is equal to 360 m/s and the percent difference is equal to 4.72%.
What is average velocity?An average velocity can be defined as the total distance covered by a physical object divided by the total time taken.
What is an average?An average is also referred to as mean and it can be defined as a ratio of the sum of the total number in a data set to the frequency of the data set.
How to calculate the average velocity?Mathematically, the average velocity for this data set would be calculated by using this formula:
Average = [F(v)]/n
Vavg = [v₁ + v₂ + v₃ + v₄ + v₅)/5
Since the values of the average velocity from the table are missing, we would assume the following values for the purpose of an explanation:
v₁ = 100 m/sv₂ = 150 m/sv₃ = 200 m/sv₄ = 250 m/sv₅ = 300 m/sSubstituting the parameters into the formula, we have:
Vavg = [300 + 450 + 500 + 250 + 300)/5
Vavg = 1800/5
Vavg = 360 m/s.
Next, we would calculate the percent difference by using this formula:
[tex]Percent \;difference = \frac{[V_{avg}\;-\;V_{sound}]}{V_{sound}} \times 100[/tex]
Percent difference = [360 - 343]/360 × 100
Percent difference = 17/360 × 100
Percent difference = 0.0472 × 100
Percent difference = 4.72%.
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Why are enthalpy changes always lower than their expected values?
A. They aren't. They are always greater than expected.
B. Heat losses during the experiment
C. Heat gains during the experiment
D. Faulty measurements
Enthalpy changes are always lower than their expected values due to faulty measurements; option D.
What are enthalpy changes?Enthalpy changes refers to the changes in the heat content of substances in the course of a reaction.
Enthalpy changes occurs as a result of bond breaking and bond formation in the reactant molecules and product molecules respectively.
Enthalpy change = Energy of bond formation - Energy of bond breakage.Enthalpy changes are measured from the changes in temperature that are observed in the course of a given reaction.
Due to faulty measurements in a particular experiment measuring enthalpy changes, enthalpy changes are always lower than their expected values.
Therefore, accurate measurements are required if results as close as possible to the actual enthalpy changes are to be obtained.
In conclusion, enthalpy changes measure the heat changes that occur during a particular chemical reaction.
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. An aeroplane takes 30 min to travel from Biratnagar to Kathmandu. If the air distance between
the Biratnagar and Kathmandu is 450 km. Find the average velocity of the plane.
Answer:
average velocity = [tex]\bf 900 \space\ km/h[/tex]
Explanation:
We can find the average velocity using the following equation:
[tex]\boxed{average \space\ velocity = \frac{total \space\ distance \space\ travelled}{ \space\ time \space\ taken}}[/tex] .
In this case:
• total distance travelled = 450 km
• time taken = 30 min = 0.5 h
Substituting these values into the equation:
[tex]average \space\ velocity = \frac{450 \space\ km }{ 0.5 \space\ h}[/tex]
⇒ [tex]\bf 900 \space\ km/h[/tex]
In the diagram, q1 = +6.39*10^-9 C and
q2 = +3.22*10^-9 C. What is the electric
field at point P? Include a + or - sign to
indicate the direction.
P
91
0.424 m-
0.636 m
-
92
(Remember, E points away from + charges,
and toward charges.)
(Unit = N/C)
E =+823.12N/C is the electric field at point P
Each point in space has an electric field associated with it when a charge of any kind is present. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the strength and direction of the electric field. in the diagram, q1 = +6.39*10^-9 C and
q2 = +3.22*10^-9 C hence E = 823.12 N/C
A region of space surrounding andd P Include a + or - sign toindicate the direction.P910.424 m-0.636 m- electrically charged particle or object known as an electric field is one in which an electric charge would experience force. A vector quantity called an electric field can be represented by arrows pointing in the direction of or away from charges. The force per unit charge exerted on a positive test charge that is at rest at a given position is the force per unit charge that is used to define the electric field analytically.
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When there is a imbalance in the body system and the body can’t maintain homeostasis how might other systems respond
Answer:
the stomach has too much oxygen stored inside
A ship is 2.40km from a large rock cliff when it sounds its foghorn at a frequency of 178Hz. How long will it take for the sounds to return to the ship? (Sound travels 343m/sec)
A ship sounds its foghorn at a frequency of 178Hz when it is 2.40km away from a sizable rock face. (Audio travels at 343 m/s.) Reconstruction succeeded in resolving the federalism controversy that had dogged the country since the 1790s.
By most other standards, reconstruction was a failure: radical Republican legislation eventually failed to shield former slaves from white persecution and to bring about significant alterations to the South's socioeconomic structure. The federalism question, which had been a topic since the 1790s practically immediately, was at hand when President Rutherford B. Former Confederate officials and slaves returned to the South after Hayes withdrew federal soldiers from the region in 1877. These newly powerful white southern legislators established anti-progressive laws like voter ID requirements and black codes with the help of a conservative Supreme Court in an effort to roll back the rights that blacks had won during Radical Reconstruction. With its rulings in the Slaughterhouse Cases, the Civil Rights Cases, and United States v., the U.S. Supreme Court strengthened this anti-progressive movement federalism.
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10. Complete each of the following radioactive decay equations.
235U → Th+a
92
90
87
37Rb Sr +
6C
→
F
e
1¹B ++ie
1. Alpha
Number next to Th is 231
(because 231 + 4 = 235)
The other number below the 4 is 2 - helium
(because 90 + 2 = 92)
2. Beta
Missing numbers are zero and one. Same as the one below it.
3. Beta
11 is the number above the C
(because 11 + 0 = 11)
5 is the number next to the B
(because 5 + 1 = 6)
Basically, the missing numbers must balance on both side of the equation; creating the elements you've started of with, meaning if you where to add the right side of the equation up - you should end up with the same protons and mass numbers you began with.
Hope this helps!
At the very end of 500 DAYS OF SUMMER, Tom (Joseph Gordon-Levitt) is so heartbroken by
Summer's rejection, that he vows to avoid any more romantic entanglements. As he observes "There
are no miracles. There's no such thing as fate. Nothing's meant to be."
True
False
He observes that "There are no miracles. There's no such thing as fate. Nothing's meant to be." this is a false statement.
What is the Definition of miracle?The term miracle is known to be something that is said to be an extraordinary event and it is one that often manifest in a kind of a divine intervention in the lives and affairs of human such as healing miracles, miracle jobs, miraculous meeting, etc.
Note that bad things that happens to people often makes them not to believe in the extraordinary but it does exist.
Hence, He observes that "There are no miracles. There's no such thing as fate. Nothing's meant to be." this is a false statement.
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find the volume of the tire with dimensions
● Tire diameter: 26”
● Tube width diameter: 2.125”
The volume of the tire at the given diameter and thickness of tube is determined as 1,128.2 cubic inch.
What is volume?Volume is a scalar quantity expressing the amount of three-dimensional space enclosed by a closed surface.
Volume of the tireThe volume of the tire is the measure of the product of area and thickness of the tire.
The volume of the tire is calculated as follows;
Radius of the tire = 0.5 x 26" = 13"
Volume of the tire = Area x thickness
Volume of the tire = πr² x h
where;
r is the radius of the tireh is the thickness of the tubeVolume of the tire = π(13)² x (2.125)
Volume of the tire = 1,128.2 cubic inch
Thus, the volume of the tire at the given diameter and thickness of tube is determined as 1,128.2 cubic inch.
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QUESTION 1 (a) State the seven (7) fundamental S.I units.
Hello and Good Morning/Afternoon:
What makes a unit a fundamental SI unit:
They are units determined to have played an essential role in today's world specifically in the technological and scientific communityThus the seven fundamental S.I. units are:
meters (m) ⇒ is the unit for the length of somethingseconds (s) ⇒ is the unit for time mol (mol) ⇒ is the base unit of the amount of a substanceampere (A) ⇒ is the base unit of electrical currentsKelvin (K) ⇒ is the unit for temperatureCandela (cd) ⇒ is the base unit for luminosity intensityKilograms (kg) ⇒ is the unit for weightHope that helps!
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I will run one mile in under 10 minutes 3 months from today.” is an example of a ___________ goal.
Long-term
Short-term
SMART
Both A and B
Answer:
long-term
Explanation:
usually a short term goal is able to be accomplished in a week or two. the question gives a 3 month time frame for the person to build up to the end goal.
An electron is ejected from the cathode by a photon with an energy slightly greater than the work function of the cathode. How will the final kinetic energy of the electron upon reaching the anode compare to its initial potential energy immediately after it has been ejected?.
The kinetic energy of the ejected electron (photoelectron) is equal to the energy of the photon minus the work function (E required to eject the photoelectron).
The process of final kinetic energy of the electron upon reaching the anode compare to its initial potential energy immediately after it has been ejected -
The electron has a lot of potential energy and very little kinetic energy when it is liberated from the cathode (as it is not moving yet or moving very slowly). We are currently on the left side of the picture above. The electron accelerates and speeds up as it goes away from the cathode and toward the anode. As a result, the kinetic energy rises.The electron is likely to have the highest kinetic energy and the lowest potential energy when it reaches the anode.Therefore, the kinetic energy at the end of the electron's journey is approximately equal as the potential energy at the beginning (when the electron was released).Learn more about kinetic energy
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