Which of the following concussion BEST describes the data Kevin collected?
A. Sound travels slower in the denser medium
B. Sound travels faster in the denser medium
C. Velocity of the sound wave does not change in the different media
D. Velocity of the sound wave does not change in the different media but in the frequency
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Related Questions
A circuit carries a current of 0.64 A when there is a resistance of 50.0 Ω. The voltage applied to the circuit, to the nearest whole number, is ___ V.
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V = 32 volts
Answer:
32v
Explanation:
edge 2023
The conversion of ozone to diatomic oxygen is represented by the equation above. Based on the data in the table above, what is the approximate average bond enthalpy for the oxygen-to-oxygen bonds in ozone?.
Answers
The approximate average bond enthalpy for the oxygen-to-oxygen bonds in ozone is 300 kJ/mol. The ozone is composed of three oxygen atoms, and it's highly reactive.
What is ozone?Ozone is a light blue-colored gas, that is highly soluble in an inert, non-polar solvent.
[tex]2O_3 \rightarrow 3O_2 \\\\ \Delta H = -300 KJ/mol[/tex]
There are double bonds present in the ozone, two molecules of ozone mean there will be four bonds.
[tex]4 \times E -3 \times 500 = -300\\\\4 \times E = -300 + 1500\\\\E = \dfrac{1200}{4} \\\\E = 300 \;KJ/mol[/tex]
Thus, the correct option C, 300 kJ/mol.
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The velocity of a free falling ball at different time intervals on unknown planet is shown in Figure 1.24.
Answer all of the following questions based on the image
A) What is the acceleration due to gravity of the planet?
B)What is the velocity at positions A and B?
C)What happens to the magnitude of velocity with passage of time? Why?
D)What factor(s) can influence the falling object on the Earth?
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Answer:
a1 = (V2 - V1) / 1 s = 3.75 m/s^2
a2 = (V2 - V1) / (t2 - t1) = (7.5 - 3.75) / 1 s = 3.75 m/s^2
a3 = (V2 - V1) / (t2 - t1) = (7.5 - 3.75) / 1 s = 3.75 m/s^2
A) a = (a1 + a2 + a3) / 3 = 3.75 m/s^2
v = a (t2 - t1)
B) after 1 sec v = 3.75 m / sec^2 * 1 sec = 3.75 m/s
after 2 sec v = v0 + a t = 3.75 m/s + 3.75 m/s^2 * 1 s = 7.5 m/s
C) The velocity increases proportionaly to the time
D) One factor depends on the variation of the acceleration due to gravity because of different positions of measurement (on earth)
A much larger factor is due to air resisance of the air on the falling object
simple cell. Study it and answer the questions that follow
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Explanation:
there is no picture or question attached
If a 600-N force is exerted on a box to push it to the right, and a 300-N force is exerted on the same box to push it to the left, what is the net force and direction of the box?
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A bowling ball with a mass of 9kg is thrown down a lane with a constant speed of 3 m/s. The ball hits the 1.5kg pin, initially at rest, at the end of the lane. After the collision the pin moves with a speed of 5 m/s. How fast is the ball moving after the impact?
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Answer:
M1 V1 = M1 V2 + M2 V3 conservation of momentum
V2 = (M1 V1 - M2 V3) / M1 where V2 = speed of M1 after impact
V2 = (3 * 9 - 1.5 * 5) / 9 = (27 - 7.5) / 9 = 2.17 m/s
Note: All speeds are in the same direction and have the same sign
A crate is attracted toward the center of the earth by a gravitational force of 500 N. The force with which the earth is attracted toward the crate is:
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Answer:
500 N - For every action there is an opposite and equal reaction.
A mass on the end of a spring undergoes simple harmonic motion. At the instant when the mass is at its equilibrium position, what is its instantaneous velocity?.
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Answer:
V = ω A sin ω t can be used to describe SHM
When sin ω t = 1 (the maximum value possible)
V = ω A at equilibrium sin ω t = 1
Two particles A and B start simultaneously from a Point P with velocities 20 m/s and 30 m/s respectively. A and B move with acceleration equal in magnitude but opposite in direction. When A overtakes B at Q, its velocity is 30 m/s. The velocity of B at Q :
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Answer:
20 m/s
Explanation:
Given
u(A) = 20 m/su(B) = 30 m/sacceleration equal in magnitude but opposite in directionSolving
Velocity of A at Q = 30 m/sFrom, P to Q, Δv(A) = 30 - 20 = +10 m/sTherefore, velocity of B at Q will be decreased by 10 as it is equal in magnitude but opposite in direction to AΔv(B) = v(B at Q) - u(B at P)-10 m/s = v(B at Q) - 30 m/sv(B at Q) = 30 - 10 = 20 m/sYou are thinking about adding a part-time job to your business? You could pay the employees the $6.50 per hour. How much would you pay if the employee Works 15 hours per week? How much would you pay if the employee Works 20 hours per week?
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Answer:
1.) 15hrs per week = $97.50
2.) 20hrs per week = $130
Explanation:
What is the power of a toaster if it can perform 3500 j of work In 3 minutes
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Answer:
Around 20 watts, or 19.4W exactly
Explanation:
to calculate the power in a time frame you use
Joules/Time(Seconds) = W (your power)
So, we take 3500 joules / 3min (180sec)
3500/180 = 19.4W, if your question asks you to round up/down, round up to 20W of power! good luck!
Energy is transferred in an electrical circuit through.
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Answer:
Poynting field
Explanation:
magnetic field of currents named the Poynting field, chosen following in position or time the 19th of one hundred years English researcher John Poynting.
What voltage source provides alternating current?
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A good example of a voltage source, and the most commonly used, is a bettery. A voltage source is essential for any electrical circuit to function.
Answer:
an alternator or a generator
Explanation:
batteries do NOT provide alternating current ...they provide DC
In the first video for chapter 29, we looked at the emission spectrum of excited gases. In this video, we look at the __________ spectrum of colored filters
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Although the video is not found here, the sentence makes reference to the transmission spectrum of colored filters.
What is the transmission spectrum?The transmission spectrum indicates the light portion having a given wavelength that can be passed through a filter.
This spectrum (transmission spectrum) depends on the physical separation of the particles that form the filter.
In conclusion, although the video is not found here, the sentence makes reference to the transmission spectrum of colored filters.
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Describe the orbit in which planets revole around the sun
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A uniform cube with mass 0.500 kg and volume 0.0270 m3 is sitting on the floor. A uniform sphere with radius 0.400 m and mass 0.800 kg sits on top of the cube. How far is the center of mass of the two-object system above the floor
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Answer:
44 1/3 cm
Explanation:
The cube has an edge length of ∛0.027 m = 0.3 m, so a center of mass (CoM) 15 cm above the floor.
The sphere's center of mass is 40 cm above the top of the cube, so is 70 cm above the floor. The weighted average of the CoM locations is ...
((15 cm)(0.700 kg) +(70 cm)(0.800 kg))/(0.700 kg +0.800 kg)
= (10.5 kg·cm +56 kg·cm)/(1.500 kg) = 44.333... cm
The center of mass of the two-object system is 44 1/3 cm above the floor.
Why is it sometimes difficult for scientists to identify a a fold or fault?
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Folds and faults are difficult to identify because they occur in the interior of rocks and also due to the dense nature of the materials.
What are faults and folds?Faults are lines of weakness are present in materials dues to uneven positioning of the particles of the material.
Folds occurs when infolds occur in materials.
Faults and folds usually occur in rocks.
Folds and faults are difficult to identify because they occur internally and also due to the dense nature of the materials.
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Which would take more force to stop in 17. 3 seconds: a 3. 2 kg ball rolling in a straight line at a speed of 0. 3 m/sec or a 4. 1 kg ball rolling along the same path at a speed of 1. 2 m/sec?
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This is because the mxv is greater than the other one.
For the 4.1kg ball, the force it’s moving on is 4.92N
As for the 3.2kg ball, it’s moving with a force of 0.9N. Much less than the other one.
When a quality control test is performed to ensure that the penetrating ability of the x-ray beam is accurate, the result must be within what amount of the control panel setting
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When a quality control test is performed to ensure that the penetrating ability of the x-ray beam is accurate, the result must be within what amount of the control panel setting will be ±4 kVp.
What is quality control?
Quality control entails testing units to see if they meet the standards for the final product.
The goal of the testing is to evaluate whether any corrective measures are required in the production process. Good quality control assists businesses in meeting customer needs for improved products.
When a quality control test is performed to ensure that the penetrating ability of the x-ray beam is accurate. The results must be under some limits.
Hence the result must be within what amount of the control panel setting will be ±4 kVp.
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you want to make some hot chocolate with 1000.00 grams of h20. if it takes 435000 joules of energy to heat you water, what is the temperature change?
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The temperature change from the calculation is obtained as 104 degrees.
What is energy?The term energy is described as the ability to do work. Now we are told that the energy that is added to the water is 435000 joules.
Given that;
H = mcdT
m = mass
c = specific heat capcity
dT = temperature change
dT = H/mc
dT = 435000/1000 * 10^-3 * 4200
dT = 104 degrees
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State Schrodinger equation.
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Hi!Schrodinger equation is written as HΨ = EΨ, where h is said to be a Hamiltonian operator.
When you push your palms together and rub them back and forth, you are demonstrating one way of converting ________ energy into ________ energy.
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Answer:
When you push your palms together and rub them back and forth, you are demonstrating one way of converting Kinetic energy into thermal energy.
Tina speaks using a nonelectric megaphone. The megaphone makes her voice louder in one direction.
How does a megaphone work?
Select one:
It affects the vocal cords of a person and allows them to make louder sounds.
It increases the amplitude of spreading sound waves.
It changes the frequency of the spreading sound waves.
It collects sound waves and reflects them in a direction
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The megaphone makes her voice louder in one direction, increases the amplitude of spreading sound waves.
What is megaphone?Megaphone is a Spotify-owned podcast technology company that specializes in ad insertion and hosting.
While the distance between from the crest of a wave to the next crest is known as the amplitude.
The megaphone makes her voice louder in one direction, increases the amplitude of spreading sound waves.
Hence, option B is correct.
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Help !!
If an object is placed 3 cm from the mirror, how far will the object appear “behind” the mirror?
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Hope this helps!
Please give Brainliest!
This is because of the diagram below:
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
As we know the property of a plane mirror, image formed by it is always virtual, of same Size as the object and at the same Distance as the object from the mirror. so we can say that the distance of image from the object = 3 cm from the mirror ( as per the property ) and at a distance of 6 cm from the object.
Dr. Man was studying a fossil from a dig in a desert when he noticed that the organism had evidence of fins.
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A car is driving at 18 m/s as it begins to merge onto a freeway. If it starts to accelerate at a constant rate of 5 m/s2, how long does it take the car to reach a speed of 47 m/s
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Answer:
it will take 5.8seconds
A man climbs on to a wall that is 3 m high and gains 2268 J of potential energy. What is the mass of the man? (g=9.8 m/s^2) *
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Answer:
77.14 kg
Explanation:
P.E = mg h
2268 = m * 9.8 * 3 m = 77.14 kg
What is the purpose of the outer reflective fabric layer of a spacesuit?.
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Explanation:
The purpose of the fabric is to deflect the harmful electromagnetic radiation from the sun and other sources. Higher energy radiation such as gamma rays or UV rays can ionize the atoms in our skin and organs. Therefore, it would be beneficial to deflect that radiation
Answer:
To cope with the extremes of temperature, most space suits are heavily insulated with layers of fabric (Neoprene, Gore-Tex, Dacron) and covered with reflective outer layers (Mylar or white fabric) to reflect sunlight.
what do it mean by the value of gravitational constant is 6.67×10^-11Nm^2/kg^2
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Answer:
gravitational constant value means it was never change in any particular area of the Earth
A star is observed to have a temperature of 3000 k and a luminosity of 105. what is the color of the star? what group does the star belong to?
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AnsAnswerwer:
the first box is red and the second boybox is giant
Explanation:
Answer:
the first answer is red and the second answer is supergiant
Explanation:
i just did it on edge 22