A very tall building has a height H0 on a cool spring day when the temperature is T0. You decide to use the building as a sort of giant thermometer on a hot summer day by carefully measuring its height. Suppose you do this and discover that the building is a length h taller than it was on the cool spring day where h is much much less than H0. Assume the entire frame of the building is made of steel, which has a coefficient of linear expansion αsteel.
Required:
What is the temperature, assuming that the building is in thermal equilibrium with the air and that its entire frame is made of steel?
Answers
Answer:
The temperature is \(T = \frac{h}{H_O \alpha_{steel} } + T_O\)
Explanation:
From the question we are told that
The height on a cool spring day is \(H_O\)
The temperature on a cool spring day is \(T_O\)
The difference in height between a cool spring day and a summer day is h
The coefficient of static friction is \(\alpha _{steel}\)
The mathematical relation for the linear expansion of the steel buiding is represented as
\(h = H_o \alpha_{steel} [T-T_O]\)
Where T is the temperature of the steel during summer
Now making T the subject we have
\(T = \frac{h}{H_O \alpha_{steel} } + T_O\)
Related Questions
Protons, neutrons, electrons, and a nucleus are
Answers
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.36 m. The mug slides off the counter and strikes the floor 1.00 m from the base of the counter.(a) With what velocity did the mug leave the counter?m/s(b) What was the direction of the mug's velocity just before it hit the floor?° (below the horizontal)
Answers
(a) Velocity with which the mug leaves the counter is approximately 5.02 m/s.
(b) The direction of velocity of mug just before it hits the floor is downwards, since mug is falling under influence of gravity.
What is velocity?Velocity is a quantity that designates how fast and also in what direction a certain point is moving.
(a) As we know, PE = m g h
\(\mathrm{PE = mgh }\)
\(\mathrm{= (m)(9.81 m/s^2)(1.36 m) }\)
= 13.4mJ
\(\mathrm{KE =\frac{1}{2} mv^2}\)
PE = KE
\(\mathrm{mgh = \frac{1}{2}mv^2}\)
\(\mathrm{v = \sqrt{2gh}}\)
\(\mathrm{v = \sqrt{2 \times 9.81 \times 1.36 m}}\)
v = 5.02 m/s
Therefore, the velocity with which the mug leaves the counter is approximately 5.02 m/s.
(b) The direction of the velocity of mug just before it hits the floor is downwards, since mug is falling under the influence of gravity. Velocity vector has a vertical component that points downwards and horizontal component that is parallel to counter.
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draw diagram of how a reflecting telescope works. show how the angles of reflection would work with mirrors placed at 2 different angles
Answers
Lenses, which are pieces of curved, clear glass, were employed in early telescopes to focus light.
What is Telescope?Curved mirrors are used by the majority of telescopes nowadays to collect light from the night sky. Light is focused by a telescope's mirror or lens' shape.
Astronomers use a telescope to observe distant things. Curved mirrors are used by the majority of telescopes, including all large telescopes, to collect and concentrate light from the night sky.
The original telescopes employed lenses, which are simply curved pieces of clear glass, to focus light. The "optics" of a telescope are the mirrors or lenses. Strong telescopes may view objects that are extremely faint and incredibly far away.
Therefore, Lenses, which are pieces of curved, clear glass, were employed in early telescopes to focus light.
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Pick the ecosystem that you would like to live in and explain why
Your answer
Answers
Answer: my ecosystem
Explanation:the ecosystem I want to live in is one with nature that you can eat witch tastes good and with animals that you can talk to. I would love to live in an ecosystem like that.
Continue where the red line would would go
Answers
Refraction would cause the red light to bend at the air/glass boundary.
What is refraction?While the question is unclear, I assume that you are trying to know something about the refraction of the red light across the air/glass boundary. I will tell you something about refraction!
Refraction is a phenomenon of light where it changes direction when it enters a medium with a different refractive index. Refractive index is a measure of how much a medium bends light that passes through it. When light passes from a medium with a lower refractive index to a medium with a higher refractive index, it bends towards the normal (an imaginary line perpendicular to the surface at the point of incidence). On the other hand, when light passes from a medium with a higher refractive index to a medium with a lower refractive index, it bends away from the normal.
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which of the following statements correctly describe why real gases deviate from ideal gas behavior at high pressures and low temperatures? select all that apply. -gases have high viscosities
-gases are much more compressible than liquids or solids
-gases have relatively low densities
-gases mix with other gases only if their molecules are of the same type
Answers
Two of the statements that correctly describe why real gases deviate from ideal gas behavior at high pressures and low temperatures are B and C. Here options B and C are the correct answer.
Statement B is correct because at high pressures, gas molecules are forced closer together, and the intermolecular attractive forces become significant. Therefore, the molecules are no longer moving independently and randomly, which leads to deviations from ideal gas behavior. At low temperatures, the molecules move more slowly and have less kinetic energy, which makes it more difficult for them to overcome the attractive forces between them.
Statement C is also correct because, at high pressures, the volume occupied by the gas molecules becomes significant compared to the total volume of the container, which leads to deviations from ideal gas behavior.
Additionally, at low temperatures, the molecules move more slowly and have less kinetic energy, which makes it more difficult for them to overcome the attractive forces between them and therefore leads to deviations from ideal gas behavior.
Complete question:
Which of the following statements correctly describes why real gases deviate from ideal gas behavior at high pressures and low temperatures? select all that apply.
A - gases have high viscosities
B - gases are much more compressible than liquids or solids
C - gases have relatively low densities
D - gases mix with other gases only if their molecules are of the same type
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If a wheel rotates 5 times in 90 seconds, what is the period and frequency
Answers
Answer:
i think it should be 18
Explanation:
Define average atomic mass and explain how it is calculated
Answers
Answer:
The average atomic mass of an element is the sum of masses of it's isotopes
Each are multiplied by it's natural abundance
Explanation:
The average atomic mass of an element is the sum of masses of it's isotopes
Each are multiplied by it's natural abundance
3. A 1.23 kg object slides down a 1.25 m incline of 35º. Use the data table to construct a graph for force due to gravity vs. distance. Trial 1 Trial 2 Trial 3 Averages Distance (m) 1.25 1.32 1.28
4. Based on the graph in #3, calculate the work done by gravity. Assume work is constant for this data.
5. Using the data from #3, construct a free body diagram and calculate work done by gravity. Explain how this value compare to the value determined graphically in #4.
Remember that this object is on an angle. You'll need to multiply the value for work by cos0
Keep in mind that you'll need to use the angle that forms between the force of gravity and distance.
Answers
Answer:
Explanation:
To construct a graph of force due to gravity vs. distance, we need to collect data for force due to gravity (Fg) and distance (d) and plot the data points on a graph. From the information given, we have the mass of the object (1.23 kg) and the angle of the incline (35º), but we do not have any data for force due to gravity or distance. Without this data, it is not possible to construct a graph for force due to gravity vs. distance.
Since we don't have the data for force due to gravity or distance, it's not possible to calculate the work done by gravity using the data table.
Without the data for force due to gravity, distance, or time it's not possible to construct a free-body diagram or calculate work done by gravity. Also, we don't have the angle of the incline, so we cannot calculate the work done by gravity by multiplying it by the cosine of the angle.
It's important to note that work done by gravity (W) = force due to gravity (Fg) x distance (d) x cos(theta), where theta is the angle between the force of gravity and the distance.
It's also important to remember that work is a scalar quantity and not a vector, and it's the angle between the force and the displacement that is important to calculate the work done by gravity, not the angle of the incline.
Which is usually associated with a faster reaction rate
Answers
Answer:
If there are more molecules present, or there's a bigger surface area on which the reaction happens, there will be more successful collisions and the reaction will go faster. Also, if the temperature is higher, more molecules will have enough energy to react, and the reaction will be faster.
I need help with this please
Answers
92. The velocity of longitudinal waves in a metallic rod depends upon its ?
Answers
The velocity of longitudinal waves in a metallic rod depends on its elastic modulus, density, atomic structure, and temperature. These factors collectively determine the ability of the rod to transmit and propagate longitudinal waves.
1. Elastic modulus: The velocity of longitudinal waves is directly proportional to the elastic modulus of the material. Elastic modulus refers to the stiffness or rigidity of the material. In metals, a higher elastic modulus corresponds to a higher velocity of longitudinal waves.
2. Density: The density of the metal also affects the velocity of longitudinal waves. Generally, higher density metals tend to have slower wave velocities.
3. Atomic structure: The arrangement and bonding between atoms in a metal impact the velocity of longitudinal waves. The crystal structure, grain boundaries, and defects in the metal can influence wave propagation.
4. Temperature: Temperature affects the speed of sound in a material, including the velocity of longitudinal waves in a metallic rod. As temperature increases, the atomic vibrations within the metal increase, leading to a higher velocity of longitudinal waves.
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A resistor R = 65.0-Ω is connected to the
terminals of a battery with emf E =12.0 V &
internal resistance r = 0.5 Ω.
Calculate
(a) the current I in the circuit,
(b) the terminal voltage of the
battery, Vab, and
(c) the power dissipated in the
resistor R & in the battery’s
internal resistance r.
( the solution should be simple not complicated)
Answers
Answer: (a) 0.178 A
(b) 11.91 V
(c) 2.18 W / 0.016 W
Explanation:
(a) To find the current I in the circuit, we can use Ohm's law:
V = IR,
where V is the voltage across the resistor R, I is the current in the circuit, and R is the resistance of the resistor. The voltage across the resistor is given by:
V = E - Ir,
where E is the emf of the battery, and r is the internal resistance of the battery. Substituting the given values, we get:
V = 12.0 V - 0.5 Ω x I,
65.0 Ω x I = 12.0 V - 0.5 Ω x I,
Solving for I, we get:
I = 0.178 A.
Therefore, the current in the circuit is 0.178 A.
(b) To find the terminal voltage of the battery, we can use the formula:
Vab = E - Ir.
Substituting the given values, we get:
Vab = 12.0 V - 0.5 Ω x 0.178 A = 11.91 V.
Therefore, the terminal voltage of the battery is 11.91 V.
(c) The power dissipated in the resistor R can be found using the formula:
P = I^2R.
Substituting the values we get:
P = (0.178 A)^2 x 65.0 Ω = 2.18 W.
The power dissipated in the battery's internal resistance can be found using the formula:
P = I^2r.
Substituting the values we get:
P = (0.178 A)^2 x 0.5 Ω = 0.016 W.
Therefore, the power dissipated in the resistor R is 2.18 W, and the power dissipated in the battery's internal resistance is 0.016 W.
This explanation takes about 2 hours to complete. Thank God it was done. Anyway, this is the explanation. Thank you.
The first P-wave of an earthquake travels 5600 kilometers from the epicenter and arrives at a seismic station at 10:05 a.m. At what time did this earthquake occur?
Ahhhhhh I have a Regent's test in 2 hours and I don't know how to solve this type of question! Any help would be appreciated.
Anyone know what the steps to do this are? I dont even need an answer, just how to get to it. Thank you!
Answers
The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.
The p-waves travel with a constant velocity of 7 km/s
The time can be calculated by using the formula
t = d / v
where
T1 = 10:05 a.m
d is the distance they take to travel from the epicenter
v is the speed of the p-waves
On average, the speed of p-waves is
v = 7 km/s
d = 5600 km (given)
Substituting the values in the formula;
t = d / v
t = 5600 ÷ 7
t = 800 seconds
Converting into minutes,
t = 800 ÷ 60
t = 13.3
≈ 13 mins
T1 - 13 mins = T2
10:05 - 13 mins = 9.52 am
It means the earthquake occurred prior 13 minutes, that is at 9.52 am.
Therefore, the earthquake occurred at 9.52 am.
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I need help fast please help
Answers
One Mole Of An Ideal Gas Undergoes An Isobaric Expansion. Which Of The Following Graphs Of Volume As A Function Of Temperature In Kelvin Could Represent This Process?
Answers
The graph showing how volume grows as temperature does.The graph shows that the volume increases linearly as the temperature increases.
Which of the above graphs of volume against temperature in kelvin better depicts this process?A linear graph could depict the volume as a function of temperature in Kelvin and the isobaric expansion of an ideal gas. There is no work done to the system because the pressure remains constant during isobaric expansion.This suggests that the internal energy change of the system changes proportionally to the temperature change and is equal to the heat it has absorbed. As a result, there is a linear relationship between temperature increase and volume growth.The volume as a function of temperature in Kelvin for isobaric expansion of an ideal gas will always be a linear graph, with the slope of the graph depending on the gas's specific heat capacity.This graph can be used to calculate the temperature change of the gas and the total quantity of heat absorbed by the system.With increasing temperature, this connection will graph as a linear increase in volume. The graph's slope is determined by the gas's specific heat capacity.Since the rate of volume growth is directly correlated with the specific heat capacity of the gas, the greater the specific heat.To learn more about volume versus temperature refer to:
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Which is one property of coal that makes it ideal for use in a power plant?
It burns easily.
It makes ash.
It is renewable.
It contains mercury.
Answers
Answer:
It burns easily & It produces a lot of energy
Explanation:
Coal burns easily and thus is ideal for use in a power plant.
• To generate electric power in the United States, the main fuel used is coal.
• It is used as it is burned easily and thus producing enormous amount of energy.
• In the power plants, the lignite, bituminous coal, or subbituminous coal is burned.
• The heat generated by the burning of the coal is used to transform water into high pressure steam that mediates a turbine, which generates electricity.
• About 23 percent of the electricity in the United States is produced by the burning of coal.
Thus, the correct answer is that coal burns easily.
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A man leave his townA at 8 am for town B which is 384km away and he reach at4pm what is average speed in m/s
Answers
Total distance covered = 384 Km
Total time taken to travel from A to B = 8 hours [from 8 am to 4 pm, there are 8 hours]
We know, Average speed = Total Distance Travelled/ Total Time Taken
Therefore, average speed = 384 Km/8 h = 384000m/8×60×60s =(384000/28800)m/s
= 13.3 m/s
Answer is 13.3 m/s
Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticable, but upon reaching shore, they can rise up to the astonishing height of a six-story building. One tsunami, generated off the Aleutian islands in Alaska, had a wavelength of 668 km and traveled a distance of 3180 km in 4.81 h. (a) What was the speed (in m/s) of the wave
Answers
Answer:
215.5 m/s
Explanation:
Given that:
the wavelength λ = 668 km
distance (d) = 3180 km
time t = 4.81 hr
\(a) speed (v) =\dfrac{distance}{time}\)
\(speed (v) =\dfrac{3180}{4.1}\)
\(speed (v) =775.61 \ km/h\)
\(speed (v) =(\dfrac{775.61\times 1000 }{3600}) \ m/s\)
\(speed(v) = 215.5 \ m/s\)
The frequency is:
\(f = \dfrac{v}{\lambda}\)
\(f = \dfrac{215.5 }{668 \times 1000}\)
\(f = 3.226 \times 10^{-4} \ Hz\)
c)
The period:
\(T = \dfrac{1}{f}\)
\(T = \dfrac{1}{3.226 \times 10^{-4}}\)
T = 3099.8 seconds
pleaseeeeeee I need HELP in 20 mins,Asap!!!
A 6.00 -kg clay ball is thrown directly against a perpendicular brick wall at a velocity of 22m/s^2 and shatters into three pieces, which all fly backward. The wall exerts a force of 2640N on the ball of for 0.1s. One piece of mass 2kg travels backward at a velocity of 10m/s and an angle of 32° above the horizontal. A second piece of mass 1kg travels at a velocity of 8m/s and an angle of 28° below the horizontal. What is the velocity of the third piece?
Answers
The velocity of the third piece is 124.02 m/s at 1.05⁰ below the horizontal.
Velocity of the third piece
The velocity of the third piece is calculated from the principle of conservation of linear momentum.
mu = m₁u₁ + m₂u₂ + m₃u₃
where;
m is mass of the clayu is velocity of the clayu₁ is velocity of first pieceu₂ is velocity of second pieceu₃ is velocity of third piecem₃ is mass of the third piece = 6 kg - (2 kg + 1 kg) = 3 kgMomentum in y - direction6(22)sin(0) = 2(10)sin32 - 1(8)sin(28) + 3u₃y
0 = 6.84 + 3u₃y
u₃y = -6.84/3
u₃y = -2.28 m/s
Change in momentumΔP = Pf - Pi = J
where;
Pf is final momentumPi is the initial momentumJ is impulse2640(0.1) = 2(10)cos32 + 1(8)cos(28) + 3u₃x - 6(22)
264 = -108 + 3u₃x
3u₃x = 372
u₃x = 372/3
u₃x = 124 m/s
Resultant velocityu₃ = √(124² + 2.28²)
u₃ = 124.02 m/s
Direction of the velocitytanθ = u₃y/u₃x
tanθ = 2.28/124
tanθ = 0.018
θ = 1.05⁰ (below the horizontal)
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A miniature quadcopter is located at
xi = −1.75 m
and
yi = 2.70 m
at
t = 0
and moves with an average velocity having components
vav, x = 1.70 m/s
and
vav, y = −2.50 m/s.
What are the x-coordinate and y-coordinate (in m) of the quadcopter's position at
t = 2.10 s?
Answers
A miniature quadcopter is located at xi = −1.75 m and yi = 2.70 m at t = 0, so the x-coordinate of the quadcopter's position at t = 2.10 s is -0.185 m, and the y-coordinate is -3.175 m.
What is the quadcopter's position?
The equation that is used here is the kinematic equations to find the position of the quadcopter at time t,
x = xi + vav, x × t
y = yi + vav, y × t
Substituting the given values, one can get:
x = -1.75 m + 1.70 m/s × 2.10 s = -0.185 m
y = 2.70 m - 2.50 m/s × 2.10 s = -3.175 m
Hence, the x-coordinate of the quadcopter's position at t = 2.10 s is -0.185 m, and the y-coordinate is -3.175 m.
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As gas rises the temperature gets hotter?
True or False
Answers
Answer:
i think its true
hope this helps!!
basics of gravitation:
Planet a exerts a force on planet b. What can be said about the magnitude and direction of the gravitational force planet b exerts on planet a?
Answers
Answer:
Explanation:
According to Newton's Law of Gravitation, the gravitational force between two objects is always mutual, meaning that the force that one object exerts on the other is equal in magnitude but opposite in direction.
This means that if planet A exerts a gravitational force on planet B, then planet B will also exert a gravitational force on planet A. The magnitude of this force will be equal to the magnitude of the force that planet A exerts on planet B, but the direction will be opposite.
For example, if planet A exerts a gravitational force on planet B that is pulling planet B towards planet A, then planet B will also exert a gravitational force on planet A that is pulling planet A towards planet B. The magnitude of these two forces will be equal, but the directions will be opposite.
hat he sais
Answer:w
Explanation:
Which of the following laws explains why a net force of 950,000 N is needed at takeoff to accelerate the
530,000 kg Atlas V rocket carrying the rover at a rate of 1.8 m/s2?
A
Newton's third law of motion
B
conservation of momentum
С
Newton's second law of motion
D
Newton's first law of motion
Answers
Answer:
Newton's second law of motion
Lab Report
Light
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_Light_Alice_Jones.doc).
Introduction
1. What was the purpose of the experiment?
Type your answer here:
2. What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Type your answer here:
Experimental Methods
1. What tools did you use to collect your data?
Type your answer here:
2. Describe the procedure that you followed to collect your data.
Type your answer here:
Data and Observations
1. Record your observations in the data tables.
Type your answer here:
Table 1. Angles of Incidence and Angles of Reflection for a Beam of Light Reflected off a Mirror
Angle of incidence (°) Angle of reflection (°)
Table 2. Angles of Incidence and Angles of Refraction for a Beam of Light Refracted through a Glass Lens
Angle of incidence (°) Angle of refraction (°)
Conclusions
1. Draw a diagram (develop a model) that shows what happens to light when it reflects off a mirror. Look for patterns in your data to help you develop your model. Hint: Is the angle of reflection always greater than, less than, or equal to the angle of incidence? Include labels.
Type your answer here:
2. Use your model to predict the angle of reflection of a beam of light reflected off a mirror if the angle of incidence of the beam of light is 40 degrees.
Type your answer here:
3. Draw a diagram (develop a model) that shows what happens to light when it is refracted through a glass lens. Look for patterns in your data to help you develop your model. Hint: Is the angle of refraction always greater than, less than, or equal to the angle of incidence? Include labels.
Type your answer here:
Answers
Answer:
Explanation:
the answer is b
Which cannot be made for utensils? A. iron B. gold C. carbon D. Copper.
Answers
Answer:
Gold
Explanation:
I would say Gold because it is not a practical material for making utensils due to its high cost and softness.
Which cannot be made for utensils?
The answer to the question is B. gold.
Gold is a very soft metal and is not ideal for making utensils that require strength and durability. Iron and copper, on the other hand, are commonly used for utensils as they are strong and durable. Carbon, in the form of carbon steel, is also commonly used for making utensils due to its strength and resistance to corrosion.
~ Zeph
The speed of sound is measured to be 340 m/s on a certain day.
What is this in Kilometers per hour?? s/km/h=
Please help and explain how to do these types of problems in very confused!!!
Answers
Explanation:
To do this, we pick the first unit and convert
Picking m first and converting to km:
Since we're converting from a non-prefix to a prefix, we divide the value by the prefix were taking it to. In this case, kilo = 10³ which means we're going to divide our value by 1000 to convert it from m to km
340 m/s ÷ 1000 = 0.34 km/s
Now, let's convert our seconds to hour:
We'll need to calculate how many hours is equivalent to one second first;
1 hr = 60×60 seconds
X hr = 1 second
*Cross multiply*
1 × 1 = X × 60 × 60
1 = 3,600 X
X = 1 / 3,600
X = 2.778×10⁻⁴ hour
So, in the place of "1 Second", we're going to be inserting 2.778×10⁻⁴ hour instead
0.34 km / s = 0.34 km / 2.778×10⁻⁴ hour
(0.34 / 2.778×10⁻⁴) km/hour
1,224 km/h.
340 m/s = 1,224 km/h
if the momentum of an object is doubled then kinetic energy is ...?
Answers
Answer:
increased with the same rate as momentum
What is the resistance of a rheostat coil, if 0.05 A of current flows through it when 6 V is applied
across it? 1200
Answers
Answer:
i have no idea i came here to find out too :(
Explanation:
A 0.150-m-radius grinding wheel, starting at rest, develops an angular speed of 12.0 rad/s in a time interval of 4.00 s. What is the centripetal acceleration of a point 0.100 m from the center when the wheel is moving at an angular speed of 12.0 rad/s?
Answers
The centripetal acceleration of a point 0.100 m from the center when the wheel is moving at an angular speed of 12.0 rad/s is 1.44 m/s^2.
To find the centripetal acceleration of a point on the grinding wheel, we can use the formula:
a = rω^2
Where:
a is the centripetal acceleration,
r is the distance from the center of the wheel to the point, and
ω (omega) is the angular speed.
Given:
Radius of the grinding wheel, r = 0.150 m
Angular speed, ω = 12.0 rad/s
Distance from the center, r' = 0.100 m
First, we calculate the centripetal acceleration at the given angular speed:
a = (0.150 m)(12.0 rad/s)^2 = 21.6 m/s^2
Now, to find the centripetal acceleration at a distance of 0.100 m from the center, we substitute the new radius into the formula:
a' = (0.100 m)(12.0 rad/s)^2 = 1.44 m/s^2
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