Answer:
diffraction
Explanation:
took da test
A known volume of ideal gas is contained in a cylinder fitted with a piston and held at constant pressure. If the temperature changes from 25oC to 200 oC, by what factor does the volume change
Considering the Charles's Law, the volume change by a factor of [tex]\frac{473 }{298 }[/tex] or 1.587.
What is Charles's LawCharles's Law consists of the relationship that exists between the volume and the temperature of a certain amount of ideal gas, which is maintained at a constant pressure, by means of a proportionality constant that is applied directly.
In other words, Charles' law states that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases: while if the temperature of the gas decreases, the volume decreases.
Mathematically, Charles's law is a law that says that when the amount of gas and pressure remain constant, the ratio between volume and temperature will always have the same value:
[tex]\frac{V}{T} =k[/tex]
Considering an initial state 1 and a final state 2, it is true that:
[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]
This caseIn this case, you know:
T1= 25 °C= 298 KT2= 200 °C= 473 KReplacing in Charles's law:
[tex]\frac{V1}{298 K} =\frac{V2}{473 K}[/tex]
Solving:
V2=[tex]473\frac{V1}{298 K}[/tex]
V2=[tex]\frac{473 K}{298 K}V1[/tex]= 1.587 V1
Finally, the volume change by a factor of [tex]\frac{473 }{298 }[/tex] or 1.587.
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How much energy is contained in a particle that has a mass of 1x10^-9 kg?
E = mc²
E = 1 x 10⁻⁹ x (3.10⁸)²
E = 9 x 10⁷ J
A sample of oxygen gas with a volume of 3.0 m3 is at 100 C. The gas is heated so that
it expands at a constant pressure to a final volume of 6.0m^3 what is the final temperature of the gas?
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
According to Charles law, if pressure remains constant, volume varies directly with temperature. so we can infer that :
[tex] \qquad\sf{\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}} [/tex]
So, we can use this formula to find out the final temperature of the gas ~
Note : Take temperature in Kelvin ( 100°C = 373 K )
[tex]\qquad \sf \dashrightarrow \: \dfrac{3}{373} = \dfrac{6}{x} [/tex]
[tex]\qquad \sf \dashrightarrow \: x = \dfrac{6}{3} \times 373 [/tex]
[tex]\qquad \sf \dashrightarrow \: x = 2 \times 373[/tex]
[tex]\qquad \sf \dashrightarrow \: x =74 6 \: K[/tex]
Now, convert it to Celsius ~
i.e 746 - 273 = 473° C
So, the final temperature of the gas will be equal to 473° C
The voltage across two points in an electric circuit is
876 mV. A power source does 1 901 kJ of work
when moving a certain amount of charge between
these two points.
Determine the amount of charge that moved between
between the two points.
Answer:
V=w/q V= 1.2/0.4* 10 ^-3 V = 3 * 10 ^ 3 V = 3000 v
if its not correct let me know so I can figure it out
N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2. 8 v
The value of inductance, when N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2.8 v, is 8.485×10³ H.
What is inductance?The inductance is the ability or the property of an electric conductor by which it opposes the amount of current flowing from it. It can be calculated with the following formula.
[tex]X_L=\dfrac{V_{rms}}{I_{rms}}[/tex]
Here, V is voltage and I is current value.
N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2.8 v. Put the values in the above formula as,
[tex]X_L=\dfrac{V_{rms}}{I_{rms}}\\X_L=\dfrac{2.8}{330\times10^{-6}}\\X_L=8.485\times10^3 \rm \;H[/tex]
Thus, the value of inductance, when N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2.8 v, is 8.485×10³ H.
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An electromagnetic wave has a wavelength of 1.5x10⁻⁵ m. What is its frequency?
Answer:
The frequency is =2⋅10 18 H z
Explanation:
Apply the equation
Frequency
×
Wavelength
=
Speed
f
×
λ
=
c
The wavelength is
λ
=
1.5
⋅
10
−
10
m
The speed is
c
=
3
⋅
10
8
m
s
−
1
The frequency is
f
=
c
λ
=
3
⋅
10
8
1.5
⋅
10
−
10
=
2
⋅
10
18
H
zApply the equation
Frequency
×
Wavelength
=
Speed
f
×
λ
=
c
The wavelength is
λ
=
1.5
⋅
10
−
10
m
The speed is
c
=
3
⋅
10
8
m
s
−
1
The frequency is
f
=
c
λ
=
3
⋅
10
8
1.5
⋅
10
−
10
=
2
⋅
10
18
H
z
please help me
Thermal conductivity is directly proportional to ___________ and inversely proportion to ___________
ALSO WRITE IT,S FORMULA
calculate the resistance of the 1000 W microwave oven that gets plugged into a 110 v outlet
The resistance of the 1000 W microwave oven that gets plugged into a 110 v outlet will be 10 ohms.
What is resistance?Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The given data in the problem is;
P is the power= 1000 W
V is the voltage= 110 V
I is the current
R is the resistance
The resistance is found by the formula;
[tex]\rm P = \frac{V^2}{R} \\\\ \rm R = \frac{V^2}{P} \\\\ R = \frac{(100)^2}{10000} \\\\ R= 10\ ohm[/tex]
Hence, the resistance value will be 10 ohms.
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A 200g air-track glider is attached to a spring. The glider is pushed in 10cm and released. A student with a stopwatch finds that 10 oscillations take 12. 0s. What is the spring constant?
The spring constant will be k= 5.5N/m for a 200g air track glider attached to a spring.
What is spring constant?The spring constant, k, is a measure of the stiffness of the spring. It is different for different springs and materials.
Calculation for What is the spring constant
First step is to calculate the time period
T = 12 second/10
T = 1.2 second
Now let calculate the spring constant using this formula
[tex]k=\dfrac{4\pi ^2m}{T^2}[/tex]
Where,
m=0.2kg
T=1.2second
k represent spring constant=?
Let plug in the formula
[tex]k=\dfrac{4 \pi \times 0.2}{(1.2)^2}[/tex]
[tex]k=\dfrac{39.48\times 0.2}{1.44}[/tex]
[tex]k=\dfrac{7.90}{1.44}[/tex]
k=5.48 N/m
k=5.5 N/m ( Approximately)
Therefore the spring constant will be 5.5 N/m
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Where does the greatest atmospheric pressure occur.
Answer:
The atmospheric pressure is greatest at the bottom of the atmosphere. This is also where the air has its greatest density. Pressure and density decrease with height in the atmosphere. The earth's gravitational field pulls the mass of the atmosphere towards the earth's surface
Which of the following is NOT a sign of extreme dehydration:
A. Severe headache
B. Dry chapped lips
C, Sweating excessively
D. Dark yellow urine
Since dehydration is due to lack of water, sweating excessively is Not a sign of extreme dehydration.
What is dehydration?Dehydration is a condition in which the body lack a enough water necessary for metabolic activities.
Dehydration results in extreme physical conditions of the body such as fatigue.
Some signs of extreme dehydration include:
Severe headacheDry chapped lipsDark yellow urineTherefore, sweating excessively is Not a sign of extreme dehydration.
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The potential energy of an orange on a tree is 6.0 joules. The orange is 5m high. What is the orange's mass?
0.12 kg.
10 kg
100 g
1 kg
The transformer in a stereo amplifier has a primary coil with 200 turns and a secondary coil with 40 turns. When the primary coil is supplied with 120-V AC, what voltage does the secondary coil provide
Answer:
Here is the answer..hope it helps:)
Which statement best describes how ultrasound can produce an image?
Answer:
Choice D
Explanation:
Choice A is incorrect because the sound waves do not form within the body.
Choice B is incorrect because the sound waves echo back, they are not measured on the other side.
Choice C is incorrect because it states that the sound waves bounce off the body. They actually bounce off tissues inside the body, among other things.
Contrast series and parallel circuits in terms of what they look like and how they calculate Equivalent resistance
Let's see
For series connection
[tex]\\ \rm\Rrightarrow R_{eq}=R_1+R_2+R_3\dots[/tex]
For parallel connection
[tex]\\ \rm\Rrightarrow \dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}\dots[/tex]
an example of inertia is when your body flies forward when you slam on the breaks.
a,true
b,false
help :
Answer:
A True ( I Think Its True I'm Not Intirely sure)
Explanation:
Answer:
true
Explanation:
True.....when you apply the brakes to slow down, your body's inertia wants ot keep moving forward
HELP ME QUICK 100 POINTS!!!
In a separate location, take notes from the sources you’ve identified. The notes will provide details for your presentation. While taking notes, you may want to use these reading strategies. Using your notes, summarize the main points about your scientist in the table provided. Include one to three points in each cell.
1
5
8
3
5
9
there ya go, good luck pal
Explain How did Aristotle's inability to detect parallax lead him to propose a geocentric model of the solar system?
Answer:
Aristotle was blind, therefore could not see change in positions. Aristotle could see no detectable change in the positions of the stars, thought Earth was immovable.
Explanation:
The trait for flower color in a plant has red and white alleles. The red color is the dominant trait. What is the phenotypic ratio for a cross between plants with red (Rr) flowers and red (Rr) flowers?
4 red : 0 white
3 red : 1 white
2 red : 2 white
1 red : 1 white
Answer:
1.4 red : 0 white
Explanation:
Answer: A
Explanation:
A metal spoon is put in a cup of hot tea and then put it into the mouth. The spoon is not very hot, but the tea is much hotter. Why?
Help is appreciated!! :D
Explain the thermodynamics of a heat engine.
Answer:
See below ~
Explanation:
What is Thermodynamics ?Thermodynamics is the branch of science which deals with heat and other forms of energy. Main key terms in this topic include : work, temperature, entropy, etc.
===============================================================
Working of a Heat Engine :The function of a heat engine is to convert heat into mechanical energy.
It does this by bringing a working substance from a higher state temperature to a lower state temperature.
=============================================================
Formula for calculating the efficiency of a heat engine :[tex]e_{max} = W_{max} / Q_{max}[/tex]
- Thermodynamics can be applied to many physical systems, as long as the exchange of energy with the medium is known, regardless of the details of the interactions in those systems.
physics 13
physics geniuses where r u need help!!!
----------------------
pls also check other questions!
Answer:
Microphone
Explanation:
Microphone is the device which converts sound into electrical energy by electromagnetic induction
Which is true about natural resources and conflict?
A.Natural resources in the past led to conflict, but not anymore.
B.Nonrenewable resources such as fossil fuels can lead to conflict, but renewable resources such as water will not.
C.Conflict often occurs over natural resources.
D.Expensive resources such as rare minerals can lead to conflict, but relatively inexpensive resources such as water will not.
Answer:
C.Conflict often occurs over natural resources.
Explanation:
Conflict always occurs if two countries or groups fight over anything that both think is theirs.
UN seems to agree: https://peacekeeping.un.org/en/conflict-and-natural-resources
The ______ of an object is the measure of force of gravity produced on it. .
Answer:
The Mass of an object.
Explanation:
Hope this helped!!
What wave on the electromagnetic spectrum has the highest frequency?
Answer:
Explanation:
Answer: Gamma rays
Gamma rays have the highest frequency.
What is an electromagnetic wave?
An electromagnetic wave requires no medium for its propagation.
It consists of a spectrum of different wavelengths.
Different wavelengths of rays have different energies and different frequencies.
Higher frequency rays have the highest energies.
What is gamma-ray?
These are ionized radiations.
Gamma radiations are obtained from the decay of the atomic nucleus.
It has the highest frequency which is why it can penetrate through matter.
It has the smallest wavelength and highest energy.
The frequency of gamma rays is more than 10^19 cycles per second and wavelength less than 100 picometers.
Answer:
Gamma Rays
Explanation:
Each part of the electromagnetic (EM) spectrum comprises photons with distinct energy levels, wavelengths, and frequencies. Gamma rays are the most energetic, have the shortest wavelengths, and have the highest frequencies.
* if air is blown with a speed of 15 m/sec across the top of one side of a u-tube containing water, what will be the difference between the water levels on the two sides?
if air is blown with a speed of 15 m/sec across the top of one side of a u-tube containing water, the difference between the water levels on the two sides is 1.3 cm.
What is density?The density is the ratio of the mass and volume of the particular object or liquid.
Applying the Bernoulli's equation across the ends of the tube A and B, we have
[tex]P_{A} = P_{B} - \dfrac{1}{2} \rho Av^{2}[/tex]
Substituting ρ = 1.2 , v = 15 and [tex]P_{B }=P_{0 }[/tex]
[tex]P_{A}= P_{B} -135[/tex]
In the left limb, [tex]P_{A}= P_{C}[/tex]
In the right limb, [tex]P_{D}= P_{o} + \rho g h[/tex]
The pressure at C and D are same.
[tex]P_{D}= P_{C}[/tex]
Substituting from the above equations , we have,
h = -1.3 cm
The height to the left limb is greater.
The difference between the water levels on the two sides is 1.3 cm.
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How much work done if an object is moving to the right and a force of 75. 0n is applied at 125 degrees to the motion while the object travels 7. 50m
Answer:
-322.64 J
Explanation:
75 N * cos 125 * 7.5 = -322.64 J
Both a transverse wave and a longitudinal wave have.
Answer:
Both waves are mechanical waves
Ip three resistors, r1r1r_1 = 11 ωω , r2r2r_2 = 68 ωω , and r3=rr3=r, are connected in series with a 24. 0 vv battery. The total current flowing through the battery is 0. 20 aa
The three resistances are connected in series, their equivalent is equal to the addition of all the resistances. The unknown value of resistance is 1.74 ohm.
What is resistance?The resistance is the opposition offered to the flow of current.
Given the value of resistance R₁ is 1 ohm, R₂ is 68 ohm and R₃ is R.
The total current flowing through the battery of voltage 24 V is 0.20 Amperes.
From the ohms law, The equivalent resistance is
[tex]R_{eq}[/tex] = Voltage / Current
The equivalent resistance is
[tex]R_{eq}[/tex] = R₁+ R₂+R₃
24 / 0.20 = 1+68+R
R = 1.74 ohm
The unknown value of resistance is 1.74 ohm.
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Light with a photon energy of 3 ev impinges on the surface of a material with work function 0.6 ev to eject electrons. what is the kinetic energy of the outgoing electrons
Answer:
KE = incident energy - work function
The maximum KE will be (3 - .6) eV = 2.4 eV
