When car tires are on hot pavement for too long, the pressure inside will ___________ and the volume within the tire will _____________. A) increase; decrease due to deflation B) decrease; remain unchanged C) increase; increase and possibly result in a blowout D) increase; remain unchanged as long as the temperature is constantly rising
When on hot pavement, car tire pressure and volume increase possibly leading to a blowout, hence the correct answer is option c.
When car tires are on hot pavement for too long, the pressure inside will increase and the volume within the tire will increase and possibly result in a blowout. This happens because as the temperature of the pavement increases, so does the temperature of the air inside the tire, causing the pressure to rise. If the pressure gets too high, it can lead to a blowout due to excessive pressure.
A 10 kg mass rests on a table. What acceleration will be generated when a force of 20 N is applied and encounters a frictional force of 15 N?
Newtons thrid law of motion describes?
Which of the following solid fuels has the highest heating value?
A. Coke
B. Bituminous coal
C. Wood
D. Lignite
Bituminous coal has the highest heating value. Option (B) is correct.
What is heating value of fuels?The amount of heat produced by the combustion of fuel or another substance in a given unit quantity is known as the heating value. Two categories of heating values exist:
The difference between combustion and the latent heat of vaporization of the water vapors produced by burning results in the lower heating value (net).The heat produced by a substance's complete combustion is known as its upper heating value (gross).The elemental composition of the fuel burned influences the difference between the higher and lower heating value.
As in the given coke, bituminous coal, wood, lignite, bituminous coal has the greatest amount carbon. Hence, bituminous coal has the highest heating value. Hence, option (B) is correct.
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What are 3 ways scientists can take to reduce bias?
describe the net force lab and explain what the lab demonstrated
The circumference of a bicycle wheel is 2 meters. if it rotates at 1 revolution per second then its linear speed is
The linear speed of a bicycle wheel with a circumference of 2 meters rotating at 1 revolution per second is 2 meters per second.
Explanation:The question seeks to find the linear speed of a bicycle wheel given its circumference and rotation rate. The circumference of the bicycle wheel is 2 meters, and it rotates at 1 revolution per second. To calculate the linear speed, we use the relationship that the linear speed (v) is the circumference (C) divided by the period of rotation (T). Since the wheel completes one revolution per second, the period T is 1 second.
Therefore, the linear speed v is given by:
v = C/T
v = 2 meters / 1 second
v = 2 meters per second (m/s).
This calculation shows that if a bicycle wheel with a circumference of 2 meters rotates at 1 revolution per second, its linear speed is 2 m/s.
What is the difference between a foliated and a non-foliated metamorphic rock?
Foliated metamorphic rocks exhibit a layered or banded appearance due to the pressure differential during metamorphism, leading to a preferred orientation of minerals. Non-foliated metamorphic rocks, on the other hand, do not demonstrate this feature as they form under conditions where pressure is exerted equally from all sides or from minerals that don't align in planes.
Explanation:The primary difference between a foliated and a non-foliated metamorphic rock lies in their structure and formation process. Metamorphic rocks undergo a physical and chemical alteration due to high temperature and pressure. This transformation leads to two broad categories: foliated and non-foliated metamorphic rocks.
Foliated metamorphic rocks display a layered or banded appearance that's caused by the pressure differential during the metamorphism process. This causes minerals to be reoriented in the direction of the pressure, producing a foliated structure with parallel alignment of minerals, like in the case of slate and gneiss.
In contrast, non-foliated metamorphic rocks do not have this layered or banded appearance. They are generally formed from minerals that don’t align in planes or have uniform pressure exerted in all directions. Therefore, these rocks such as quartzite and marble, present a massive or granular structure without a preferred orientation of the mineral grains.
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when do sea breezes occur
A student is given an assignment to demonstrate diffraction. He takes a photograph of a straw in a glass of water. The straw appears bent at the water level. Which best describes this example? A)This is a good example of diffraction.B)This is an example of dispersion and not diffraction.C)This is an example of refraction and not diffraction.D)This is an example of reflection and not diffraction.
Diffraction or refraction
Answer: C) This is an example of refraction and not diffraction.
Explanation: The reason for the straw to appear bent at the water's surface is because of the process of refraction. Light travels at different speeds in different medium because of the varying densities.
The light travels from air to water and thus the difference in speed results in an apparent shift of the position of part of straw under water and thus the part appears broken.
Reflection is the the return of sound or light energy from the surface without absorbing it.
Diffraction is the phenomenon which occurs when the wave encounters an obstacle.
The average mass of an automobile in the United States is about 1.440x10^6 g express this mass in kilograms
The average mass of an automobile in the United States is about 1.440x10^6 g, which is equivalent to 1440 kg.
Explanation:The average mass of an automobile in the United States is about 1.440x106 g. To express this mass in kilograms, you can convert from grams to kilograms by dividing the mass by 1000. Therefore, 1.440x106 g is equal to 1440 kg.
Which is a valid ionic compound?
a: sodide chlorine
b: sodium chloride
c: sodium chloride
D : sodide chloride
Answer: The correct answer are (b) and (c).
Explanation:
Ionic compound is a chemical compound. It is a compound of ions. These ions are held together by the electrostatic force. But the compound is neutral overall.
Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion. Sodium ion is cation while chloride ion is anion.
Cation is positively charged species. Anion is negatively charged species.
Sodide chloride is not an ionic compound.
Therefore, the correct options are (b) and (c).
A car accelerates at 2 m/s2. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 20 m/s? A. 2 seconds B. 10 seconds C. 20 seconds D. 40 seconds E. none of the above
The car need 10 seconds to accelerate to a speed of 20 m/s.
Acceleration:
It is defined as the rate of change in velocity with time. The change can speed change or direction change.
The formula,
[tex]\bold {a = \dfrac vt}[/tex]
Where,
a - acceleration = 2 [tex]\bold { m/s^2 }[/tex]
v - velocity = 20 m/s
t -time = ?
Put the values in the formula,
[tex]\bold {a = \dfrac {20}{2}= 10\ s}[/tex]
Therefore, the car need 10 seconds to accelerate to a speed of 20 m/s.
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What is the mid-atlantic ridge? how many miles does it stretch?
If you are traveling at 750,000 mm/s, how many km/hr are you traveling?
40 POINTS CORRECT ANSWER
Why does hot air rise and cold air sink?
A ) Cold air has more kinetic energy than hot air.
B ) Hot air has more potential energy than cold air.
C ) Cold air is more dense than hot air.
D ) Hot air is more dense than cold air.
Hot air rises and cold air sinks because Cold air is more dense than hot air. The correct option is (C).
What is density?Density is a physical property of matter that describes how much mass is packed into a given volume of a substance. It is defined as the amount of mass per unit volume of a substance, and it is commonly measured in units of grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).
The formula for density is:
Density = Mass / Volume
Where:
Density is the density of the substance (in kg/m³ or g/cm³)
Mass is the mass of the substance (in kg or g)
Volume is the volume of the substance (in m³ or cm³)
Here in The Question,
The main reason that hot air rises and cold air sinks is due to differences in their densities. When air is heated, it expands and becomes less dense. Conversely, when air is cooled, it contracts and becomes more dense. This is known as the density-temperature relationship.
Option (A) "Cold air has more kinetic energy than hot air" is not true because the temperature is a measure of the average kinetic energy of the particles in a substance. Hot air has a higher temperature and therefore, more kinetic energy than cold air.
Option (B) "Hot air has more potential energy than cold air" is not true because potential energy is related to an object's position or configuration. Temperature does not have a direct relationship with potential energy.
Option (D) "Hot air is more dense than cold air" is also not true. When air is heated, it expands and becomes less dense. Therefore, hot air is less dense than cold air.
Therefore, the correct option is (C) Cold air is more dense than hot air, which explains why hot air rises and cold air sinks.
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You drive a car for 2.2 h at 45 km/h, then for another 2.2 h at 60 km/h. what is your average velocity?
a force of 100 newtons is applied to a box at an angle of 36 degrees with the horizontal. If the mass of the box is 25 Kilograms, what is the horizontal acceleration of the box
The mass of an object relates to __________
When is steven universe coming back 2017?
its in july now too and we see a peek of ~WHITE DIAMOND~
When cartographers represent the three-dimensional earth in two dimensions, what is likely to occur?
distortion is most likely to occur.
Gravity is greater when there is
Select one:
A. equal mass and more distance between two objects.
B. less mass and less distance between two objects.
C. more mass and less distance between two objects.
D. more mass and more distance between objects.
The cubic centimeter, which is often abbreviated as cc or cm3, is the metric unit of what
Answer:
Submultiplo of volume of the international system of units (cubic meter).
Explanation:
The cubic centimer is a submultiple of the unit of measure of volume in the International System of Units, which is the cubic meter.
It corresponds to the volume of a cube of one centimeter side. It is equivalent to one millionth of a cubic meter and also one milliliter.
True or false a solid object can cast a shadow
Two particles move along an x axis. the position of particle 1 is given by x = 9.00t2 + 6.00t + 2.00 (in meters and seconds); the acceleration of particle 2 is given by a = -8.00t (in meters per seconds squared and seconds) and, at t = 0, its velocity is 23.0 m/s. when the velocities of the particles match, what is their velocity?
Final answer:
when the velocities of the particles match, their velocity is approximately 49.10 m/s.
Explanation:
For particle 1:
Given x = 9.00t² + 6.00t + 2.00 (in meters and seconds), we can find its velocity by taking the derivative of x with respect to t:
v₁(t) = dx/dt = 18.00t + 6.00
For particle 2:
Given a = -8.00t (in meters per seconds squared and seconds), we can find its velocity by integrating a with respect to t:
v₂(t) = ∫ a dt = -4.00t² + C
Given that at t = 0, v₂(0) = 23.0 m/s, we can solve for C:
v₂(0) = -4.00(0)² + C = C = 23.0
So, v₂(t) = -4.00t² + 23.0
Now, we need to find when their velocities match:
v₁(t) = v₂(t)
18.00t + 6.00 = -4.00t² + 23.0
Now, solve for t:
4.00t² + 18.00t - 17.0 = 0
Using the quadratic formula:
t = (-b ± √(b² - 4ac))/(2a)
Substituting a = 4.00, b = 18.00, and c = -17.0:
t = (-18.00 ± √(324 + 272))/(8.00)
t = (-18.00 ± √596)/(8.00)
t ≈ -1.70 or 2.45
Since time cannot be negative, we discard t = -1.70. Thus, t = 2.45 s.
Now, substitute t = 2.45 s into either v₁(t) or v₂(t) to find the velocity when their velocities match.
Let's use v₁(t):
v₁(2.45) = 18.00(2.45) + 6.00
v₁(2.45) ≈ 49.10 m/s
Final answer:
When the velocities of the particles match, their velocity is 23.0 m/s.
Explanation:
To find the velocity when the velocities of the particles match, we need to set their velocity functions equal to each other. The velocity of particle 1 is obtained by taking the derivative of its position function:
v1(t) = 18.00t + 6.00
The velocity of particle 2 is given to us as 23.0 m/s. So we set:
v1(t) = 18.00t + 6.00 = 23.0
Now, solve the equation for t:
18.00t + 6.00 = 23.0
18.00t = 17.0
t = 17.00/18.00 = 0.94 s
Therefore, when the velocities of the particles match, their velocity is 23.0 m/s.
A package of chips weighs 45 grams. How much is that in kilograms?
To make the jump, Neo and Morpheus have pushed against their respective launch points with their legs applying a _____ to the launch points. distance dimension equilibrium force
Final answer:
To make the jump, Neo and Morpheus apply a 'force' to their respective launch points. By Newton's third law, this force results in an equal and opposite reaction force that propels them into the air. The same principle applies to a student jumping from a window, where thrust and mutual gravitational forces come into play.
Explanation:
To make the jump, Neo and Morpheus have pushed against their respective launch points with their legs applying a force to the launch points. When any object wants to jump or launch off the ground, it must exert a force against the ground to propel itself into the air. This concept is described by Newton's third law, which states that for every action, there's an equal and opposite reaction. Therefore, when jumping, our legs push down on the ground, and in response, the ground pushes our bodies upward with an equal force, allowing us to lift off.
This is related to the example of the astronomy student mentioned in the reference material, where the student's and the Earth's mutual forces of gravity result in a change of momentum for both; however, due to Earth's much larger mass, it moves imperceptibly compared to the student. When the student jumps, his acceleration is significantly greater. This can be further explored with the concept of thrust, which is a force that pushes an object forward - in this case, upwards against gravity when the student jumps from the window.
A minivan sells for 33,200 dollars. Give the price of the minivan in a) kilodollars and megadollars
Final answer:
When converting the price of a minivan from dollars to kilodollars and megadollars, it equals 33.2 kilodollars and 0.0332 megadollars respectively.
Explanation:
A minivan selling for $33,200 can be converted into kilodollars and megadollars as follows:
1 kilodollar = 1000 dollars, so in kilodollars, the minivan's price is 33.2 kilodollars.
1 megadollar = 1,000,000 dollars, so in megadollars, the minivan's price is 0.0332 megadollars.
Why is symmetry important in an aircraft?
Quantum particles acting as a wave or matterr?