Final answer:
The distance light travels in the time it takes sound to travel 1 cm in air at 20°C is approximately 8.75 × 10^5 cm.
Explanation:
The speed of sound in air can be approximated using the formula v = 331.4 m/s + 0.6T, where T is the temperature of the air in Celsius. At 20°C, the speed of sound is approximately 343 m/s. To find the distance light travels in the time it takes sound to travel 1 cm in air at 20°C, we can set up a proportion.
If sound travels 1 cm in air at a speed of 343 m/s, we can set up the following proportion:
343 m/s / 1 cm = c / x
where c is the speed of light and x is the distance light travels in the same time. Solving for x, we find:
x = (1 cm) * (c / 343 m/s)
Substituting the speed of light c = 3.0 × 10^8 m/s, we can calculate the distance light travels:
x = (1 cm) * (3.0 × 10^8 m/s / 343 m/s)
x ≈ 8.75 × 10^5 cm
In Step 5, you will calculate H+/OH– ratios for more extreme pH solutions. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 2. Then divide the H+ concentration by the OH– concentration. Record these concentrations and ratio in Table C. What is the concentration of H+ ions at a pH = 2? mol/L What is the concentration of OH– ions at a pH = 2? mol/L What is the ratio of H+ ions to What is the concentration of H+ ions at a pH = 11?
Answer
below
Explanation:
0.01
0.000000000001
10,000,000,000 : 1
Answer:
What is the concentration of H+ ions at a pH = 2?
0.01
mol/L
What is the concentration of OH– ions at a pH =2?
0.000000000001
What is the ratio of H+ ions to OH– ions at a pH =2?
10,000,000,000: 1
Explanation:
what can you tell about the hydrogen/hydroxide ion concentration of the unknown liquid
1) Back on the beach the following day, Clay notices that the waves propelling towards the beach have a period of 6 s. If the wave crests are 15 m apart what is the speed at which they are traveling?
2) Barry Manilow is playing a concert. Having purchased your ticket so late you are sitting in the back row 184 m from the stage. If Barry hits a note on his keyboard that has a frequency of 400 Hz, how many full sound wavelengths are there between you and Barry? How much is the time delay between the time the note is played and the time you hear the note?
3) find the frequency of the ultrasonic wave emitted by a bat if it has a wavelength of 0.0085 m
4) A "wave" in a football stadium has a period of 2 seconds. If the crests between these " waves" measure 20 m, what is the speed at which the "wave" is traveling?
True or false canvassing is an approach used to justify leads!!!hurry
You must raise the weight to a height of 10 meters. You cannot do it! Thinking back to what you have learned in science class, you set up the pulley you see here. How does using this pulley reduce the force needed to lift the weight 10 meters?
Answer:
C.The amount of force stays the same; the direction changes. You pull down to move something up.
Explanation:
i got it right so trust me. if you dont ur loss
Which term is defined as the ratio of the speed of light in a vacuum to the speed of light in the material it is passing through?
A. index of refraction
B.index of reflection
C.angle of reflection
D.angle of incidence
Practicing good human relations skills and having a positive attitude will
If you practice good human relation skills then you will be more happy, be open, talk more, you will think more positive and a lot more. (these are just some examples)
Hope this will help someone! ;)
If the concentration of sn2+ in the cathode compartment is 1.50 m and the cell generates an emf of 0.24 v , what is the concentration of pb2+ in the anode compartment?
Answer:
4.8*10^-8M
Explanation:
To determine the concentration of Pb2+ in the anode compartment, we can use the Nernst equation. By rearranging the Nernst equation and plugging in the given values, we can calculate the concentration of Pb2+ in the anode compartment.
Explanation:To determine the concentration of Pb2+ in the anode compartment, we need to use the Nernst equation. The Nernst equation relates the cell potential to the concentration of ions in each compartment of the cell. It is given by: Ecell = E°cell - (0.0592/n) × log([Pb2+]/[Sn2+]), where Ecell is the cell potential, E°cell is the standard cell potential, [Pb2+] is the concentration of Pb2+ in the anode compartment, [Sn2+] is the concentration of Sn2+ in the cathode compartment, and n is the number of electrons transferred in the balanced redox reaction.
In this case, the cell potential is 0.24 V, [Sn2+] is 1.50 M, and n is 2 (since it is a Sn2+/Pb2+ redox reaction). Therefore, the equation becomes: 0.24 = E°cell - (0.0592/2) × log([Pb2+]/1.50). We can rearrange this equation to solve for [Pb2+]: [Pb2+] = (10^((E°cell - 0.24) × 2 / 0.0592)) × 1.50.
How much energy is needed to increase the temperature of 755g of iron from 283k to 403k ?
To find the energy needed to increase the temperature of 755 g of iron from 283 K to 403 K, we use the specific heat capacity of iron (0.449 J/g °C) and the formula q = mcΔT. After converting the temperatures to Celsius, the calculation shows that 40,714 joules of energy is required.
Explanation:The question asks how much energy is required to increase the temperature of a specific mass of iron. The calculation involves using the formula for heat energy, which is q = mcΔT. The specific heat (c) of iron, the mass (m) of the iron object, and the change in temperature (ΔT) are required to find the total amount of energy needed.
To calculate the energy needed to increase the temperature of 755 g of iron from 283 K to 403 K, we use the specific heat capacity of iron, which is given as 0.449 J/g °C in a comparable example. First, we convert the temperatures from Kelvin to Celsius by subtracting 273 from both temperatures. This gives us a starting temperature of 10 °C and an ending temperature of 130 °C. The change in temperature is then 130 °C - 10 °C = 120 °C.
Using the formula q = mcΔT, where
m = 755 g (mass of iron),
c = 0.449 J/g °C (specific heat capacity of iron),
ΔT = 120 °C (change in temperature),
we can calculate the energy required as:
q = (755 g) x (0.449 J/g °C) x (120 °C) = 40,714 J
This means that 40,714 joules of energy is needed to increase the temperature of 755 g of iron from 283 K to 403 K.
A cube shaped pool is half full of water. if the water is 3 feet deep, what is the volume when the water is all the way to the top?
The volume of the cube-shaped pool when filled to the top is 27 cubic feet, as the cube has a side length of 3 feet.
To determine the volume of a cube-shaped pool when it is filled to the top, given that the water is currently 3 feet deep and at half capacity, we can apply the formula for the volume of a cube: Volume = length times width times height. Since the pool is half full, and given that the height of the water is 3 feet, it means that the length of a side of the cube is also 3 feet, as it is a cube shaped pool.
Therefore, the volume of the pool when full would be:
Volume = 3 feet times 3 feet times 3 feet = 27 cubic feet.
This calculated volume represents the pool's total capacity, assuming it's filled all the way to the top.
that which travels in waves that are not the same length is called
The speed of a wave is 65 m/sec ifthe wavelength of the wave is 0.8 meters what is the frequency of yhe wave
Saturn's moon Mimas has an orbital period of 82,800 s at a distance of 1.87x10^8m from Saturn. Using m central m= (4n^2d^3/GT^2) 1 determine Saturn's mass.
Determine Saturn's mass by rearranging Newton's version of Kepler's Third Law.
Answer:
[tex]5.65\times 10^{26} kg[/tex]
Explanation:
From Kepler's third law: Mass of the planet is given by:
[tex] M = \frac{4\pi ^2d^3}{GT^2}[/tex]
where, T is the time period of satellite revolving about the planet at a distance d. G is the gravitational constant = 6.67 × 10⁻¹¹ Nm²/kg²
Given, d = 1.87 × 10⁸ m
T = 82800 s
⇒[tex] M = \frac{4\pi ^2 (1.87\times 10^8)^3}{(6.67\times 10^{-11})(82800)^2}=5.65\times 10^{26} kg[/tex]
What is the power generated by a 45 kg person who walks up a flight of 12 stairs, each 30 cm high, in 12 s?
A.13.5 W
B.132.3 W
C.1,350 W
D.13,230 W
What is planck's constant? choose 2 answers. a when the energy e of a photon is multiplied by its frequency f b 6.623 x 10-34 j.s c when the energy e of a photon is divided by its frequency f d 6.022 x 1023?
a 4.0 kg object is acted upon by a 20 n force to the right and a 25 n force to the left. what is the magnitude of the objects accerlation
In electromagnetic induction, does the direction of the magnet’s motion influence the direction of the induced current?
Which statement best compares conduction, convection, and radiation?
Convection and radiation transfer thermal energy through matter only, and conduction transfers thermal energy through both matter and empty space.
Radiation and conduction transfer thermal energy through matter only, and convection transfers thermal energy through both matter and empty space.
Convection and conduction transfer thermal energy through matter only, and radiation transfers thermal energy through both matter and empty space.
Conduction, convection, and radiation transfer thermal energy through both matter and empty space.
In conduction mode of heat transfer energy is transferred through medium molecules by their vibration about their own position. SO here medium particles remain at their own position while energy is transferred from one point to other
In convection mode of heat transfer the heat is carried by the medium molecules from one place to other. So here medium moles itself transfer with the energy.
In radiation mode heat energy is transferred through electromagnetic waves so there is no medium required for this.
So correct answer is
Convection and conduction transfer thermal energy through matter only, and radiation transfers thermal energy through both matter and empty space.
Convection and conduction transfer thermal energy through matter only, and radiation transfers thermal energy through both matter and empty space.
Difference between duracell and interstate golf cart batteries
Final answer:
The Duracell and Interstate brands offer golf cart batteries with differences in performance, battery life, and maintenance needs. While Duracell is known for reliable and long-lasting power, Interstate emphasizes build quality and has a strong support network. The choice depends on user preferences and cart compatibility.
Explanation:
The Duracell and Interstate brands offer golf cart batteries, with distinctions that can influence a consumer's choice. Duracell batteries are known for their long-standing reputation in battery reliability and performance. They typically provide a range of batteries for various applications, including golf carts, with attention to long-lasting power and durability. On the other hand, Interstate batteries boast top-quality construction and are also very reliable, with a strong presence in the automotive battery market. Consumers may find differences in the specifications such as battery life, maintenance requirements, performance under varying conditions, and price between the two brands.
When choosing between Duracell and Interstate golf cart batteries, one should consider factors such as the type of battery (flooded lead-acid vs. AGM), capacity, cycle life, maintenance needs, and warranty offered by the manufacturer. Duracell generally offers a reliable and consistent performance, while Interstate emphasizes build quality and has a strong distribution network for customer support. Ultimately, the decision should be based on the specific needs and preferences of the user, as well as the compatibility with their golf cart model.
The four terrestrial planets are so called because they ?
I would love to stretch a wire from our house to the Shop so I can 'call' my husband in for meals. The wire could be tightened to have a tension of 240N and a m/L 'weight' of 0.05kg/L. How long would it take for my pulse wave to travel to the Shop (24m) to ring a bell to indicate dinner time.
An electron is projected vertically upward with a speed of 1.70 ✕ 106 m/s into a uniform magnetic field of 0.320 t that is directed horizontally away from the observer. describe the electron's path in this field when viewed from above.
The path of the electron is 30.2μm
Data;
speed = 1.70x10^6 m/smagnetic field = 0.320TCharge of an electron = 1.60x10^-19 Cmass of an electron = 9.1x10^-31 kgThe radius or path of the electronThe path of the electron is circular and the radius can be calculated with the help of centripetal force.
[tex]qvB = \frac{mv^2}{r} \\qB = \frac{mv}{r}\\ r = \frac{mv}{qB} \\[/tex]
Let's substitute the value and solve.
[tex]r = \frac{mv}{qB}\\r = \frac{9.10*10^-^3^ * 1.70* 10^6}{(1.60*10^-^1^9 * 0.320}\\r = 3.02*10^-5\\r = 30.2 \mu m[/tex]
The path of the electron is 30.2μm
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Final answer:
The path of an electron projected upward into a horizontal magnetic field, when viewed from above, forms a circular motion due to the magnetic force acting as a centripetal force. The electron will circulate clockwise because of its negative charge.
Explanation:
An electron is projected vertically upward with a speed of 1.70 × 106 m/s into a uniform magnetic field of 0.320 T that is directed horizontally away from the observer. When an electron moves through a magnetic field perpendicular to the direction of the field lines, it experiences a magnetic force perpendicular to both the field and its velocity. This force acts as a centripetal force and causes the electron to move in a circular path.
Since the magnetic field is horizontal and the electron is projected upward, the magnetic force will cause the electron to circulate in a plane perpendicular to the magnetic field. When viewed from above, the path of the electron will be a circle.
It's important to note that the direction of the force and thus the direction of the circular motion depends on the fact that the electron has a negative charge. According to the right-hand rule, as the electron is projected upward, the force will be directed to the observer's left, causing the electron to circulate clockwise when viewed from above.
Many dogs have ticks and fleas in their fur. Ticks and fleas feed upon the blood of dogs to get nutrients is that competition, parasitism, mutualism or commensalism
parasitism.
Understanding the Relationship Between Dogs, Ticks, and Fleas
The interaction of ticks and fleas feeding on the blood of dogs is an example of parasitism. In this relationship, the ticks and fleas are considered parasites, benefiting by consuming nutrients from the host, which in this case are the dogs. The host, the dogs, are harmed by this interaction because the parasites can cause discomfort and diseases, such as Lyme disease, which is transmitted by deer ticks. Unlike commensalism, where one organism benefits and the other is unaffected, parasitism negatively impacts the host. Moreover, this is different from mutualism, where both species benefit, and competition, where different species compete for the same resource.
Which of these is the best description of the Frye Standard?
A) The procedure that is followed to prepare an examiner for trial.
B) Applying the principle that no two people have exactly the same fingerprints.
C) Determining if an expert witness is in fact an expert and allowing their testimony in court.
D) Deciding if the procedure, principles or techniques in question in a forensic case are generally accepted by the relevant scientific community.
Which technique is used to compare ink on a suspect document?
A) thin-layer chromatography
B) infrared spectrophotometry
C) blotting with alcohol method
D) ultraviolet spectrophotometry
At what point in a trial process can a plea bargain no longer be entered?
A) when the jury considers the verdict
B) before opening statements
C) after the prosecution rests
D) when the defense rests
Answer:
1. Option D) Deciding if the procedure, principles or techniques in question in a forensic case are generally accepted by the relevant scientific community.
2. Option A) thin-layer chromatography
3. Option A) when the jury considers the verdict
Explanation:
1. The Frye Standard is a procedure to determine if the piece of evidence is admissible in a court of law. This is a rigorous test to test how well the evidence can be used against a criminal or prove a case in the court of law. This came after a ruling that an experts advice only was insufficient to prove a case.
2. Thin layer chromatography is used to separate the ink components. This is because the ink is made of different components that have different volatlitities and solublies in the alcohol solution. The inks can be compared by looking at the partitioning coefficient and comparing the two distances traveled by the components.
3. The guilty cannot plead a case when the verdict has been given. At that moment, the case is closed.
The Frye Standard is used in court to determine if the procedure, principles, or techniques in a forensic case are generally accepted by the scientific community. This standard ensures the admissibility of expert testimony.
The best description of the Frye Standard is determining if the procedure, principles or techniques in question in a forensic case are generally accepted by the relevant scientific community. This standard is used to determine the admissibility of expert testimony in court. The Frye Standard requires that the scientific community generally accepts the technique before allowing it as evidence.
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Building up electric charges on a Van de Graaff generator is an example of static
Static electricity is shown by building up electric charges on a Van de Graaff generator. Given statement is correct.
What is static electricity?The imbalance of electric charges within or on the surface of a substance, or between materials, is known as static electricity.
Static electricity is generated by Van de Graaff generators. Static does not include acceleration, implying that it is stationary, which pertains to the formation of electric charges.
Static electricity is shown by building up electric charges on a Van de Graaff generator.
Hence,given statement is correct.
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What are the relative positions of the sun moon and earth during a full moon?
A person starts walking at a constant speed of 2.3 m/s in a straight line from point A to point B . At point B, she turns around and walks back to point A at a speed of 1.1 m/S. What was her average speed for the entire trip in m/s?
To calculate the average speed of the person's entire trip, you would use the formula of total distance divided by total time. In this scenario, the total distance is twice the distance from point A and B, and the total time is the sum of the times taken to walk from A to B and back.
Explanation:The question is asking about the concept of average speed, which in physics is defined as the total distance travelled divided by the total time taken. In this case, the subject walks from point A to B and then retraces her steps back to A.
Since she's retracing her exact path, the total distance travelled is essentially twice the distance from A to B. The total time taken is the time taken to walk from A to B plus the time taken to walk back.
Firstly, we would determine the time taken for each leg of the journey by dividing the distance, say 'd', by her speed. However, since we don't have a specific distance given, we can use variables.
Let's say the time taken to travel from A to B is 't1' (d/2.3) and from B to A is 't2' (d/1.1).
Her total journey time 'T' is the sum of 't1' and 't2'. To get the average speed, we divide the total distance travelled (which is '2d') by 'T'. This would give us an equation that represents her average speed for the entire trip.
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A person starts walking at a constant speed of 2.3 m/s in a straight line from point A to point B. At point B she turns around and walks back to point A at a speed of 1.1 m/s
Let distance between A and B be s.
When she goes from A to B,
Time taken = Distance travelled/ Speed
= s/ 2.3
When she goes from B to A,
Time taken= Distance travelled/ Speed
= s/1.1
Total distance travelled= s+s= 2s
Total time taken:
= s/2.3+s/1.1
=1.1s+2.3s/1.1*2.3
=3.4s/2.53
Average speed= Total distance/ Total time
= 2s / (3.4s/2.53)
= 1.48 m/s
Therefore, the average speed of the whole journey is 1.48 m/s.
If one light bulb burns out in a string of lights, and the rest stay lit, it is reasonable to assume that the lights are wired in
Answer:
Series
Explanation:
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What kind of circuit is the one shown below?
Answer:
The given circuit diagram shows parallel circuit.
Explanation:
In this circuit diagram two bulbs are connected in parallel combination because current flows from the battery gets bifurcated at the junction. Thus, two bulbs are connected in parallel combination.
This parallel combinations of bulbs then connected to the battery given in the diagram. So, the combinations of bulbs are connected in parallel combinations with the battery.
Hence, both bulbs and battery are connected in parallel combinations with each other.
The circuit diagram shown in figure is parallel.
Answer:
The given circuit is in
Series circuit is the one in which there is more than one resistor.
Combination circuit is the one in which gates are used to form the circuit.
Open circuit is the one in which there is no battery.
Parallel circuit is one in which current is divided in different paths.
Here, we can see that we have a battery in the circuit that means it is closed circuit.
And Current is divided that means it is parallel combination.
Therefore, Option D is correct that is parallel.
The first artificial satellite to be launched into space was called _____________.