When light travels from plastic into the air, some of the light is reflected at the interface between the two media. The reflected wave is characterized by a few key differences compared to the incident wave.
Firstly, the reflected wave is inverted with respect to the incident wave, meaning that it is flipped upside down.
Furthermore, the abundance of the reflected wave is by and large more modest than that of the occurrence wave.
This is because some of the energy of the wave is absorbed or scattered as it interacts with the interface between the plastic and air.
Lastly, the reflected wave is shifted in phase compared to the incident wave. The amount of phase shift depends on the angle of incidence and the refractive indices of the two media.
In summary, the reflected wave that occurs when light travels from plastic into the air is inverted, has a smaller amplitude, and is shifted in phase compared to the incident wave.
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A platinum resistance thermometer measure temperature on the assumption that the change in electrical resistance of platinum is proportional to the change in temperature. The resistance of the platinum at 100oc. Calculate the temperature when the resistance is 9.601ohms. What will be the resistance which the temperature is 45oc.
The resistance is directly proportional to the temperature. Then resistance of platinum at 100°C IS 2.5 Ω. Then, the when the resistance becomes 9.61 ohms is 384°C. Then, the resistance at 45°C is 1.1 ohms.
What is resistance ?Resistance in a material is the hindrance to electric current. The resistance through a material depends on the electric voltage, temperature and current.
The resistance is directly proportional to the temperature.
then given R1/T1 = R2/T2
Given the resistance at 100 °C is 2.5 ohms .
R2 = 9.6 ohms
then, T2 = R2 T1/R2
T2 = (9.6 ohms × 100°C)/2.5 ohms = 384°C.
Then, the resistance at 45 degree Celsius is calculated as follows;
R2 = (2.5 ohms × 45)/100°C = 1.1 ohms.
Therefore, the resistance of platinum at 45°C is 1.1 ohms.
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D Pressure is directly proportional to temperature at constant volume. True False
Answer: I think false!
Explanation: hope this helps and I hope everyone is having a good day/Friday&weekend^^
a car moving at constant speed rounds a curve as shown (the view is from above). at the point pictured, is there a force of friction acting on the car? hint: think of all the forces acting on the car. what direction do they have to add up to? a. no b. yes, pointing backwards c. yes, pointing left d. yes, pointing right
Yes, there is a force of friction acting on the car at the point pictured. The force of friction acts in the direction opposite to the direction of motion of the car, so it would be pointing towards the center of the curve (which is towards the left in this case).
What is Constant Speed?
Constant speed refers to the situation where an object is moving with a consistent or uniform velocity in a straight line. It means that the object is moving at the same rate and in the same direction for the entire duration of its motion.
For example, if a car is traveling at a constant speed of 60 miles per hour, it will travel 60 miles in one hour, 120 miles in two hours, and so on. In contrast, an object that is not moving at a constant speed is said to have a variable speed, meaning its velocity changes over time.
The car is moving at a constant speed, which means that the net force acting on it must be zero. In order for this to be the case, the force of friction must be present to counteract the centripetal force that is required to keep the car moving in a circular path. This centripetal force is provided by the normal force of the road pushing up on the tires of the car, and the force of friction must be present to counteract it so that the net force on the car is zero. Therefore, the correct answer is (c) yes, pointing left.
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the density of mercury is 13,600 kg/m3 at 0 ∘c . what is the density of mercury at 200 ∘c ?
The density of mercury is 13,600 kg/m³ at 0°C . 13,119 kg/m³ is the density of mercury at 200 °C.
The density of mercury at 0 °C is given as 13,600 kg/m³. To find the density of mercury at 200 °C:-
ρ2 = ρ1 / [1 + β (T2 - T1)]
The coefficient of volume expansion of mercury is given as 1.82 x 10⁻⁴ K⁻¹.
Converting the temperatures to Kelvin, we have:
T₁ = 0 + 273.15 = 273.15 K
T₂ = 200 + 273.15 = 473.15 K
ρ₂ = 13,600 kg/m³ / [1 + (1.82 x 10⁻⁴ K⁻¹)(473.15 K - 273.15 K)]
ρ₂ = 13,600 kg/m³ / [1 + (1.82 x 10⁻⁴ K⁻¹)(200 K)]
ρ₂ = 13,600 kg/m³ / [1 + 0.0364]
ρ₂ = 13,600 kg/m³ / 1.0364
ρ₂ = 13,119 kg/m³
Therefore, the density of mercury at 200 °C is approximately 13,119 kg/m³.
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Hi could someone help me answer these questions from my worksheet, thanks!
2. The field representation of a positive charge would not be a good representation of the gravitational field around one mass because the electric force between charged particles is an electromagnetic force that behaves differently from the gravitational force between masses.
3. The field around two positive charges would not be a good representation of the gravitational field around two masses because the direction of the electric force between two charges is dependent on their relative positions and charges, whereas the direction of the gravitational force between two masses is always attractive and points toward the center of mass.
4, A good analogy for the process of work being done and electric potential energy being stored when positive and negative charges are moved farther apart would be the process of lifting a heavy object because work must be done to lift a heavy object and store gravitational potential energy, work must be done to separate positive and negative charges and store electric potential energy.
5. The gravitational force is the dominant force we notice in our everyday interactions and at planetary or larger scales because it depends only on the mass of the objects, which is typically much larger than their charge.
What is the difference between gravitational force and electric force?The gravitational force between two masses is proportional to the product of their masses and inversely proportional to the square of the distance between them, while the electric force between two charges is proportional to the product of their charges and inversely proportional to the square of the distance between them.
Gravitational force is a long-range force that acts between all masses, while the electric force is a short-range force that acts only between charged particles.
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an organ pipe is 95 cm long and open on both ends. what frequency note does the pipe produce? take the speed of sound to be 343 m/s
The organ pipe produces a note with a frequency of approximately 181 Hz.
f = (nv)/(2L)
where:
f = frequency
n = the harmonic number (the first harmonic is 1, the second is 2, etc.)
v = the speed of sound (343 m/s)
L = the length of the pipe (95 cm = 0.95 m)
Since the pipe is open on both ends, it can produce all the odd harmonics (1st, 3rd, 5th, etc.). We'll find the frequency of the first harmonic (n=1):
f = (1343)/(20.95)
f = 181.05 Hz
Frequency is a term used in physics to describe the number of waves, vibrations, or cycles that occur in a given amount of time. It is measured in Hertz (Hz), which represents the number of cycles per second. For example, if a wave oscillates up and down 50 times in one second, its frequency is 50 Hz.
Frequency is a fundamental concept in many areas of physics, including sound, light, and radio waves. It is an important factor in determining the pitch of a sound, as well as the color of light.
In addition, frequency is closely related to the wavelength of a wave, which is the distance between two consecutive points of a wave with the same phase. The relationship between frequency and wavelength is given by the equation c = fλ, where c is the speed of light or sound, f is the frequency, and λ is the wavelength.
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width of the wooden block
The width of the wooden block measured by the vernier caliper is 0.74 cm.
What is the width of the wooden block?
The width of the wooden block measured by the vernier caliper is calculated as follows;
Width of the wooden block = main scale reading + vernier scale reading
The main scale reading = 0.7 cm
The vernier scale reading ( point of alignment ) = ( 0.4 cm / 10 ) = 0.04 cm
The width of the wooden block measured by the vernier caliper is calculated as follows;
Width of the wooden block = 0.7 cm + 0.04 cm
Width of the wooden block = 0.74 cm
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Based on what you learned about light, select all of the correct statements from the following list.a. High frequency photons carry more energy than long wavelength photons.b. All electromagnetic waves travel at the speed of light.c. Light can act both as a wave and a particle.d. A photon is a particle of light. X-rays and gamma rays are long wavelength photons.e. Different types of electromagnetic radiation are fundamentally different types of waves.f. The only type of electromagnetic radiation that is actually considered light is visible light.
Correct statements about light are a) b) c) d) and false statements are e) and f) based on radiation properties
Correct statements about light are:
a. High frequency photons carry more energy than long wavelength photons. This is because the energy of a photon is directly proportional to its frequency, according to the equation E=hf, where E is energy, h is Planck's constant, and f is frequency. Therefore, photons with higher frequencies (and shorter wavelengths) have higher energy than those with lower frequencies (and longer wavelengths).
b. All electromagnetic waves travel at the speed of light. This is a fundamental property of electromagnetic waves, which are made up of oscillating electric and magnetic fields that propagate through space at the speed of light in a vacuum.
c. Light can act both as a wave and a particle. This is known as wave-particle duality and is a fundamental concept in quantum mechanics. Depending on the experiment, light can exhibit both wave-like and particle-like behavior.
d. A photon is a particle of light. This is true. Photons are the fundamental particles of light and are massless particles that travel at the speed of light.
e. Different types of electromagnetic radiation are fundamentally different types of waves. This is false. All types of electromagnetic radiation are fundamentally the same type of wave, differing only in their frequency and wavelength.
f. The only type of electromagnetic radiation that is actually considered light is visible light. This is false. All types of electromagnetic radiation, from radio waves to gamma rays, are considered forms of light. However, the human eye is only sensitive to a narrow range of frequencies within the electromagnetic spectrum, which we perceive as visible light.
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The density of mercury is 13600 kg/m3 at 0 oC.What would its density be at 200 oC?Coefficient of volume expansion for mercury is 182x10-6(o C)
The density of mercury at [tex]200^{\circ}C[/tex] is [tex]13122.35 kg/m^3[/tex].
It is given that,
The initial temperature, [tex]T_0=0^{\circ}C[/tex].
The density of mercury at [tex]0^{\circ}C[/tex] is [tex]\rho_{0}=13600 kg/m^3[/tex].
The volume expansion coefficient for mercury is [tex]\alpha_v=182\times10^{-6} (^{\circ}C^{-1})[/tex].
The final temperature, [tex]T=200^{\circ}C[/tex].
Let us assume that,
The initial volume of mercury is [tex]V_0[/tex] [tex]m^3[/tex].
The final volume of mercury is [tex]V[/tex] [tex]m^3[/tex].
The volume expansion formula is given as,
[tex](V-V_0)=V_0\alpha_v(T-T_0)[/tex]
[tex]\Rightarrow V=V_0+V_0\alpha_v(T-T_0)[/tex]
[tex]\Rightarrow V=V_0+V_0(182\times10^{-6})(200-0)[/tex]
[tex]\Rightarrow V=V_0+(0.0364)V_0[/tex]
[tex]\Rightarrow V=1.0364V_0[/tex]
The initial density, [tex]\rho_0=\frac{m}{V_0}=13600 kg/m^3[/tex].
Hence. the final density, [tex]\rho=\frac{m}{V}[/tex].
So, [tex]\frac{\rho}{\rho_0}=\frac{m/V}{m/V_0}[/tex]
[tex]\Rightarrow \frac{\rho}{13600}=\frac{V_0}{V}[/tex]
[tex]\Rightarrow \frac{\rho}{13600}=\frac{V_0}{1.0364V_0}[/tex]
[tex]\Rightarrow \rho=\frac{13600}{1.0364} kg/m^3[/tex]
[tex]\Rightarrow \rho=13122.35 kg/m^3[/tex]
Therefore, the density of mercury at [tex]200^{\circ}C[/tex] is [tex]13122.35 kg/m^3[/tex].
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what is the maximum torque on a 150-turn square loop of wire 18.0 cm on a side that carries a 36.4 a current in a 1.60 t field?
The maximum torque on a 150-turn square loop of wire 18.0 cm on a side that carries a 36.4 a current in a 1.60 t field is 283.04 N m.
1) torque on the loop will be :
T = N*I*L^2*B*sin(90)
T = 150*36.4*0.18*0.18*1.6
T = 283.04 N m
2) T = 283.04*sin(10.9)
T = 53.52 Nm
3) I = T/N*area*B
I = 9/36.4*3.14*0.364*0.364*0.8
I = 0.082 A
Current = 0.082 A
Necklace is the rotational fellow of direct force.( 1) It's also appertained to as the moment of force( also shortened to moment). It represents the capability of a force to produce change in the rotational stir of the body.
The conception began with the studies by Archimedes of the operation of regulators, which is reflected in his notorious quotation" Give me a switch and a place to stand and I'll move the Earth". Just as a direct force is a drive or a pull, a necklace can be allowed of as a twist to an object around a specific axis.
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What is the acceleration of an object moving in a circular motion at a constant speed?
The velocity of an item traveling in a circle at a constant speed is changing, therefore the object is still accelerating.
Since its velocity is changing, an object traveling in a circle at a constant speed is still accelerating. Particularly, even if its speed doesn't change, the direction of motion does. The item is being pulled towards the center of the circular route by a centripetal force, which is the cause of the direction shift.
The acceleration of an object moving in a circular motion at a constant speed can be calculated using the following formula:
a = [tex]v^2 / r[/tex]
where
a is the centripetal acceleration,
v is the speed of the object, and
r is the radius of the circular path.
The velocity of an item traveling in a circle at a constant speed is changing, therefore the object is still accelerating.
In particular, even while its speed is constant, its direction of motion is continually changing. A centripetal force, which is dragging the item towards the centre of the circular route, is to blame for this shift in direction.
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How does an object's motion change as a result of centripetal acceleration?
Centripetal acceleration, the acceleration of a body traversing a circular path. Because velocity is a vector quantity (that is, it has both a magnitude, the speed, and a direction), when a body travels on a circular path, its direction constantly changes and thus its velocity changes, producing an acceleration.
what is the magnitude of the acceleration of a skydiver who is currently falling at one-half his eventual terminal speed?
0.68 m/s² is the magnitude of the acceleration of a skydiver who is currently falling at one-half his eventual terminal speed.
The terminal speed of a skydiver is the maximum velocity that the skydiver reaches in freefall, where the net force acting on the skydiver is equal to zero. The terminal speed is determined by the balance between the gravitational force acting on the skydiver and the air resistance force acting on the skydiver. The acceleration of a skydiver who is currently falling at one-half his eventual terminal speed can be calculated using the equation for the net force acting on the skydiver:
[tex]F net = ma[/tex],
here,
m is mass of the skydiver,
a is acceleration.
Since, the net force is equal to zero at terminal speed, we can calculate the air resistance force at one-half the terminal speed and equate it to the gravitational force to find the acceleration. The air resistance force is proportional to the square of the velocity, so at one-half the terminal speed, the air resistance force is proportional to one-fourth of the terminal speed squared.
Let's call the terminal speed Vt and the skydiver's velocity at one-half the terminal speed V/2:-
[tex]F gravity = m * g[/tex],
here, g is acceleration due gravity (9.8 m/s^2).
[tex]F air = -k * V^2[/tex],
here, k constant that depends on the skydiver's body shape, size, and surface area.
At terminal speed, net force is zero:-
[tex]m * g = -k * Vt^2[/tex]
At one-half the terminal speed, the air resistance force is proportional to one-fourth of the terminal speed squared:-
[tex]F air = -(k/4) * Vt^2 = -(k/4) * (V/2)^2[/tex]
The gravitational force is unchanged:-
[tex]F net = m * g + Fair[/tex]
Reversing in the values:-
[tex]m * g = m * g + (-k/4) * (V/2)^2[/tex]
Rearranging the eq.:
[tex](k/4) * (V/2)^2 = m * g[/tex]
Dividing both sides by m:-
[tex](k/4) * (V/2)^2 / m = g[/tex]
[tex](V/2) / \sqrt{((k/4) / m)} = \sqrt{(g)}[/tex]
Finally, dividing both sides by (V/2):-
[tex]a = \sqrt{(g)} / \sqrt{ ((k/4) / m)}[/tex]
Note that the constant k is difficult to calculate exactly, as it depends on many factors such as the skydiver's body shape, size, and surface area, as well as the air density and altitude. However, we can use an estimated value of k to find an approximate value for the acceleration. For example, a common value used for k is 0.75, so if we use this value, we get:
[tex]a = \sqrt{(9.8 m/s^2)} / \sqrt{((0.75/4) / m)} = 0.677 = 0.68 m/s^2[/tex].
Hence, the magnitude of the acceleration of a skydiver who is currently falling at one-half his 0.68 m/s².
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what is the role of electric bulb in electric circuit
Answer: Determine if the electricity is flowing.
Explanation:
If I have this correct, with how you said it, it's to make sure the electricity is flowing because you can actually see it when it's on and off to tell the difference!
Please answer these question asap.
An airplane flies 170km in 15 min in the given case.
To find the average speed, we divide the total distance by the time taken:
Average. speed = Total distance / Time taken
In this case, the total distance is 170 km and the time taken is 15 min. However, it's more common to express speed in km/hr, so we need to convert 15 min to hours:
15 min = 15/60 = 0.25 hours
Now we can calculate the average speed:
Avg. speed = 170 km / 0.25 hours = 680 km/hr
Therefore, the average speed of the airplane is 680 km/hr.
Q1b. Sarah rides her horse with a constant speed of 20 km/hr. How far can she travel in 4 hours?
To find the distance Sarah can travel in 4 hours, we multiply her speed by the time:
Distance = Speed x Time
In this case, Sarah's speed is 20 km/hr and the time is 4 hours, so:
Distance = 20 km/hr x 4 hours = 80 km
Therefore, Sarah can travel 80 km in 4 hours on her horse.
Q2a. An airplane flies at a constant speed of 780 miles per hour. How long will it take to travel a distance of 2635 miles?
To find the time it takes the airplane to travel a distance of 2635 miles, we divide the distance by the speed:
Time = Distance / Speed
In this case, the distance is 2635 miles and the speed is 780 miles per hour, so:
Time = 2635 miles / 780 miles per hour ≈ 3.38 hours
Therefore, it will take the airplane approximately 3.38 hours to travel a distance of 2635 miles at a constant speed of 780 miles per hour.
Q2b. An airplane flies at a constant speed of 540 miles per hour. How long will it take to travel a distance of 2160 miles?
To find the time it takes the airplane to travel a distance of 2160 miles, we divide the distance by the speed:
Time = Distance / Speed
In this case, the distance is 2160 miles and the speed is 540 miles per hour, so:
Time = 2160 miles / 540 miles per hour = 4 hours
Therefore, it will take the airplane 4 hours to travel a distance of 2160 miles at a constant speed of 540 miles per hour.
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Io loses about a ton (1000 kilograms) of sulfur dioxide per second to Jupiter's magnetosphere.
a. At this rate, what fraction of its mass would Io lose in 4.5 billion years?
b. suppose sulfur dioxide currently makes up 1% of Io's mass. When will Io run out of this gas at the current loss rate?
Sulfur dioxide (SO2) is a chemical compound that is composed of one sulfur atom and two oxygen atoms. It is a colorless gas with a pungent odor, and is produced by both natural and anthropogenic sources.
Describe Sulphur Dioxide?
Natural sources of sulfur dioxide include volcanic eruptions, while anthropogenic sources include the burning of fossil fuels, such as coal and oil, and the smelting of ores containing sulfur. Sulfur dioxide is also used in the production of paper, wine, and other products.
a. To find the fraction of its mass that Io would lose in 4.5 billion years, we first need to find how much sulfur dioxide it would lose in that time.
One year has 31536000 seconds (60 seconds per minute × 60 minutes per hour × 24 hours per day × 365 days per year), so 4.5 billion years is:
4.5 billion years × 31536000 seconds per year = 1.42 x 10¹⁷ seconds
So, the total amount of sulfur dioxide lost in that time is:
1000 kg/s * 1.42 x 10¹⁷ s = 1.42 x 10²⁰ kg
To find the fraction of Io's mass that this represents, we need to divide this amount by Io's mass. According to NASA, Io's mass is about 8.9319 x 10²² kg.
Fraction of Io's mass lost = (1.42 x 10²⁰ kg) / (8.9319 x 10²² kg) = 0.00159
Therefore, Io would lose about 0.159% of its mass in 4.5 billion years at this rate.
b. If sulfur dioxide currently makes up 1% of Io's mass, we can use the same rate of loss to determine how long it would take for Io to run out of this gas.
Let's call the amount of sulfur dioxide currently on Io SD₀. Then we can set up the following equation:
SD₀ - 1000 kg/s × t = 0
where t is the time in seconds it takes for Io to lose all of its sulfur dioxide.
We know that SD₀ is 1% of Io's mass, so we can use the mass of Io from part a to find SD₀:
SD₀ = 0.01 × 8.9319 x 10²² kg = 8.9319 x 10²⁰ kg
Plugging this in, we get:
8.9319 x 10²⁰ kg - 1000 kg/s × t = 0
Solving for t, we get:
t = (8.9319 x 10²⁰ kg) / (1000 kg/s) = 8.9319 x 10¹⁷ seconds
Converting this to years, we get:
t = 8.9319 x 10¹⁷ s / 31536000 s per year = 2.83 x 10¹⁰ years
Therefore, at the current rate of loss, Io would run out of sulfur dioxide in about 28.3 billion years.
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if your car speedometer fluctuates between 15 and 90 miles per hour as you are driving on a freeway at a constant speed then as a measure of speed, your car speedometer is low in
Car speedometer is likely reading lower than your actual speed.
This is because a speedometer measures the speed of the wheels of the car, rather than the actual speed at which the car is moving.
The speedometer is connected to the car's transmission and measures the rotations of the drive shaft. The drive shaft rotates a certain number of times per revolution of the car's wheels, and this rotation is measured by a sensor in the speedometer. The sensor then sends a signal to the speedometer, which displays the speed on the dashboard.
However, the speedometer is calibrated based on the size of the tires on the car. If the size of the tires is not the same as the size that the speedometer is calibrated for, then the speedometer will not read the correct speed. This can be due to several factors, such as worn tires or different tire sizes than what the car was designed for.
If you suspect that your speedometer is not reading correctly, it is a good idea to have it checked and recalibrated by a professional mechanic. This will ensure that you are driving at the correct speed and can help you avoid any potential safety hazards on the road.
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as an electric field gets stronger, does the distance between equipotential lines increase, decrease, or stay the same?
As the electric field gets stronger, the distance between equipotential lines decreases.
What is an Equipotential line?Equipotential lines are hypothetical paths through space that link places with an identical electric potential. Equipotential lines, then, are a group of electric field sites where the electric potential is constant. These lines enable a way to see and comprehend the electric field in a specific area because they are always perpendicular to the electric field lines at every point.
In several branches of physics, including electrostatics, electromagnetism, and quantum mechanics, equipotential lines are helpful. They are used to explain and comprehend how charged particles and electric fields behave.
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Is the flux of electric field through a closed surface is zero then?
If the flux of the electric field through the closed surface is zero then the electric field at points on that surface must be zero.
On the off chance that the electric field going through a shut surface is uniform and opposite to the surface, the electric transition through the surface will be zero. This happens on the grounds that the electric field lines enter and leave the surface at equivalent rates, prompting a net transition of nothing. Be that as it may, in the event that the electric field is non-uniform or not opposite to the surface, the electric transition through the surface won't be zero. The electric motion through a shut surface is connected with how much charge encased by the surface, as given by Gauss' regulation. In this way, deciding the electric motion through a closed surface can give data about the charge circulation inside the surface.
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an automobile is sliding across an icy street at a speed of 69.3 km/h and it collides with a parked car. the two cars lock up and they slide together with a speed of 35.7 km/h. if the mass of the parked car is 1250 kg, then what is the mass of the first car?
We can solve this problem by using the principle of conservation of momentum, which states that the total momentum of a system of objects remains constant unless an external force acts on it. By using this the mass of the first car is 2053 kg.
Explain the principle of conservation of momentum.A fundamental tenet of physics is the conservation of momentum, which holds that unless an outside force occurs on an isolated system of objects, its overall momentum will not change. As long as there are no outside forces acting on the system, this indicates that the total momentum of a system prior to a collision or interaction is equal to the total momentum of the system following the collision or interaction.
To calculate the mass of the first car:
The momentum of a car is given by its mass times its velocity. So, we can write:
The momentum of first car before collision + momentum of the parked car before collision = momentum of both cars after collision
Let the mass of the first car be m1, and let the velocity of the first car before the collision be v1. We can convert the given speeds from km/h to m/s, since the units need to be consistent for the calculation:
69.3 km/h = 19.25 m/s
35.7 km/h = 9.92 m/s
Using the principle of conservation of momentum, we can write:
m1 * v1 + 0 = (m1 + 1250 kg) * 9.92 m/s
Simplifying and solving for m1, we get:
m1 * v1 = (m1 + 1250 kg) * 9.92 m/s
m1 * v1 = 9.92 m/s * m1 + 9.92 m/s * 1250 kg
m1 * v1 - 9.92 m/s * m1 = 9.92 m/s * 1250 kg
m1 * (v1 - 9.92 m/s) = 9.92 m/s * 1250 kg
m1 = (9.92 m/s * 1250 kg) / (v1 - 9.92 m/s)
We don't know the value of v1, but we can find it by using the fact that the two cars slide together after the collision. The velocity of the two cars after the collision is given by:
35.7 km/h = 9.92 m/s
Using the principle of conservation of momentum again, we can write:
m1 * v1 + 0 = (m1 + 1250 kg) * 9.92 m/s
m1 * v1 = 9.92 m/s * (m1 + 1250 kg)
v1 = 9.92 m/s * (m1 + 1250 kg) / m1
Substituting this expression for v1 into the earlier equation, we get:
m1 = (9.92 m/s * 1250 kg) / (9.92 m/s * (m1 + 1250 kg) / m1 - 9.92 m/s)
Simplifying this equation and solving for m1, we get:
m1 = 2053 kg
Therefore, the mass of the first car is 2053 kg.
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sound waves with frequency 3700 hz and speed 343 m/s diffract through the rectangular opening of a speaker cabinet and into a large auditorium of length 100 m. the opening, which has a horizontal width of 21.0 cm, faces a wall 100 m away. along that wall, how far from the central axis will a listener be at the first diffraction minimum and thus have difficulty hearing the sound? (neglect reflections.)
The central will a listener be at the first minimum and thus have difficulty hearing the sound is 41.2 m.
As with all waves, the relationship between sound speed, frequency, and wavelength can be described by the equation where stands for sound speed, stands for sound frequency, and represents the wavelength.
Perpendicular to the speaker and spaced from the central should make up the initial minimum.
Therefore,
100m/[(0.300m)(3000Hz)/(343m/s)]²-1
= 41.2 m
Therefore, the central will a listener be at the first minimum and thus have difficulty hearing the sound is 41.2 m.
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what two types of forces act on a fluid element? question 5 options: shearing and surface forces body and surface forces gravitational and body forces
The two types of forces that act on a fluid element is body forces and surface forces.
A body force is a force that acts throughout the volume of a body.( 1) Forces due to graveness, electric fields and glamorous fields are exemplifications of body forces. Body forces discrepancy with contact forces or face forces which are wielded to the face of an object.
Normal forces and shear forces between objects are superficial forces as they're wielded to the face of an object. All cohesive face magnet and contact forces between objects are also considered as face forces.
Face force denoted fs is the force that acts across an internal or external face element in a material body. face force can be perished into two vertical factors normal forces and shear forces. A normal force acts typically over an area and a shear force acts parenthetically over an area.
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at a bowling alley, two players each score a spare when their bowling balls make head-on, approximately elastic collisions at the same speed with identical pins. after the collisions, the pin hit by ball a moves much more quickly than the pin hit by ball b. which ball has more mass?
Ball B has more mass than ball A.
If the two bowling balls collide elastically and with the same speed, they must have the same initial momentum. When they hit the pins, the total momentum is conserved, and is transferred to the pins. The net momentum transfer to the pins is zero.
However, if the pins move at different speeds after the collision, it means they receive different amounts of impulse during the collision. Impulse is defined as the change in momentum, and is equal to the force multiplied by the time it is applied.
Therefore, the pin hit by ball A must have experienced a greater impulse than the pin hit by ball B, since it moved more quickly, means that ball A must have had less mass than ball B.
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a medical linear accelerator is used to accelerate electrons to create high energy beams that can destroy tumors with minimal impact on surrounding healthy tissue. the beam energy fluctuates between 200 and 210 mev. the cumulative distribution function is
A medical linear accelerator accelerates electrons to create high-energy beams, with energy levels fluctuating between 200 and 210 MeV, which is used to destroy tumors while preserving healthy tissue. The beam energy fluctuations could be represented using a cumulative distribution function in statistics.
Explanation:A medical linear accelerator is a device used in cancer treatment. It utilizes electromagnetic fields to accelerate electrons to high speeds, creating a beam of high energy. This energy, typically oscillating or fluctuating between 200 and 210 MeV (mega-electron volts), targets cancerous tumors, destroying them with minimal damage to surrounding healthy tissues. In statistics, the cumulative distribution function could be utilized to understand or describe the probability associated with these energy fluctuations of the electron beam.
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therm is a unit that is generally used to measure the energy contained in natural gas. t/f
Although being a fossil fuel, natural gas is cleaner and more effective than other conventional fuels. According to the Center for Liquefied Natural Gas, natural gas emits fewer greenhouse gases and pollutants than its competitors. Thus, it is true.
What is the energy contained in natural gas?The methane and other hydrocarbon molecules in the decomposing organisms contain chemical energy that was previously obtained by photosynthesis from the sun. Burning natural gas can provide power as well as heat homes.
Methane makes up the majority of natural gas, but it also includes ethane, propane, and heavier hydrocarbons. Moreover, it has trace amounts of water, nitrogen, carbon dioxide, and hydrogen sulphide.
Therefore, it is true that therm is a unit that is generally used to measure the energy contained in natural gas.
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Miss
case of 16 calculators,
which she got for half
price. Shipping was $12.
which brought the total
to $100. What is the full
price for a case?
Miss case of 16 calculators, which she got for half price. Shipping was $12. Which brought the total to $100. The full price for a case is $176.
What is calculation?A calculation is a deliberate mathematical process that transforms one or more inputs into one or more outputs or results.
Here the price of the calculator has to be calculated
The total price including the shipping is $100
She got 16 calculators
Shipping was $12
100 - 12 = 88
Since there was half price.
88 x 2 = $176
Therefore, the full price for a case is $176.
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if speed of particle triples by what factor does it kinetic energy increase
If speed of particle triples, the kinetic energy will be times six (6).
What is the relationship between kinetic energy and speed?Kinetic energy is the energy possessed by an object because of its motion, equal (nonrelativistically) to one half the mass of the body times the square of its speed.
The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity.
This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.
Therefore, an object with triple speed will have times six kinetic energy.
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Two newspapers Graphic and Times. delivered to 40 houses in house receives at least news newspaper. In at all of Graphic and 24 com topic copies. 26 copies of of Times are are delivered. Find the number of who which receive Times only. houses in Adentan. Each one copy of
What is the acceleration due to gravity on a 9.8 x 1026 kg planet that has a radius of 2.8 x 107 m?
The acceleration due to gravity on a 9.8 x 1026 kg planet that has a radius of 2.8 x 107 m g = 9.8 m/s2.
calculation using the equation:
Gravity (g) = (G x Mass of Planet)/(Radius of Planet)^2
Where G is the gravitational constant (6.67408 x 10-11m3kg-1s-2).
Therefore, gravity (g) = (6.67408 x 10-11m3kg-1s-2 x 9.8 x 1026 kg)/(2.8 x 107 m)^2
g = 9.8 m/s2
What is acceleration due to gravity?
Acceleration due to gravity is the acceleration of an object in a vacuum due to the force of gravity. It is commonly denoted by g and has a value of 9.8 m/s² or 32.2 ft/s² at sea level on Earth.
Therefore, The acceleration due to gravity on a 9.8 x 1026 kg planet that has a radius of 2.8 x 107 m g = 9.8 m/s2.
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how much extra water does a 140-lb concrete canoe displace compared to an ultra lightweight 41-lb kevlar canoe
The volume of water displaced canoe compared to an ultra-lightweight Kevlar canoe is 1.586ft^3 extra water.
Which would give us the total volume displace by each canoe, however, the problem asks us for the difference between volumes displaced, and thus the difference is:
ΔV = (Mc_c + Mc_K /ρ)_c - (Mc_c + Mc_K /ρ)_K
Since both the mass of the load and the density of the fluid is the same for both cases, the previous equation becomes:
ΔV = Mc_c - Mc_K /ρ
ΔV = 140lb - 41lb / 62.4 lb/ft^3
ΔV = 1.586ft^3
Kevlar canoe is a type of canoe made of a material called Kevlar. Kevlar is a strong synthetic fiber that is known for its resistance to abrasion, heat, and cuts. It is commonly used in the manufacturing of body armor, bulletproof vests, and other protective gear. In the case of a Kevlar canoe, the material is used to construct the hull of the canoe, making it lightweight, durable, and easy to maneuver.
Kevlar canoes are popular among outdoor enthusiasts, particularly those who enjoy canoeing or kayaking in whitewater rivers, lakes, or oceans. They are also popular among people who like to take long trips or expeditions as the Kevlar material ensures the canoe can withstand harsh conditions and heavy use.
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Complete Question: -
How much extra water does a 140-lb concrete canoe displace compared to an ultra -lightweight 41-lb Kevlar canoe of the same size carrying the same load?
