Answer: [tex]3.48\ rad/s[/tex]
Explanation:
Given
Angular speed in rpm is 33.3 rpm
To convert it into rad/s, multiply it with [tex]\frac{2\pi}{60}[/tex]
Angular speed(rad/s)
[tex]\Rightarrow \dfrac{2\pi \times 33.3}{60}\\\\\Rightarrow 3.48\ rad/s[/tex]
A light ray in air strikes an oil
surface at a 61.0 deg angle, and
moves inside the oil at 38.3 deg.
What is the index of refraction of
the oil?
(Water n = 1.33, Air n = 1.00)
(No Unit)
Answer:
The index of refraction of the oil is 1.41.
Explanation:
We can find the index of refraction of the oil using Snell's law:
[tex] n_{1}sin(\theta) = n_{2}sin(\alpha) [/tex]
Where:
n₁: is the index of refraction of medium 1 (air) = 1.00
n₂: is the index of refraction of medium 2 (oil) =?
θ: is the angle between the light ray and the medium 1 = 61.0°
α: is the angle between the light ray and the medium 2 = 38.3°
Hence, the index of refraction of the oil is:
[tex] n_{2} = \frac{n_{1}sin(\theta)}{sin(\alpha)} = \frac{1.00*sin(61.0)}{sin(38.3)} = 1.41 [/tex]
Therefore, the index of refraction of the oil is 1.41.
I hope it helps you!
Answer:
1.41
Explanation:
Help me please I don’t understand
Answer:
a. hydroelectric power plant
WILL GIVE BRAINLIEST
Answer:
[tex]2\:\mathrm{m/s^2}[/tex]
From Newton's 2nd Law, we have [tex]\Sigma F=ma[/tex]. Substituting given values, we have:
[tex]40=20a,\\a=\frac{40}{20}=\boxed{2\:\mathrm{m/s^2}}[/tex]
Are surface currents warm or cold?
A:war m
B:cold
Answer:
Cold
Explanation:
Im pretty sure im sorry if I am wrong
In the experiment, a meter is hooked up to a speaker to monitor the amplitude of the received sound. Suppose the background signal level is 13 mV, the signal is 91 mV with no attenuator and is 25 mV with an attenuator in place. Calculate pt/pi including the background correction.
Answer:
The answer is "[tex]15.38\%[/tex]"
Explanation:
Background[tex]= 13 \ mv\\\\[/tex]
corrected signal[tex]= 91 \ mv-13\ mv= 78\ mv\\\\[/tex]
with attenuator[tex]=25\ mv-13\ mv= 12\ mv\\\\[/tex]
[tex]\to \frac{p_t}{p_i}=\frac{12}{78}\times 100= 15.38\%[/tex]
There are three 20.0 Ω resistors connected in series across a 120 V generator
Answer:
That is equal to R1 + R2. If three or more unequal (or equal) resistors are connected in series then the equivalent resistance is: R1 + R2 + R3 +…, etc. One important point to remember about resistors in series networks to check that your maths is correct.
A system has both potential energy (PE) and kinetic energy (KE). According to
the law of conservation of energy, what can happen to the total energy of the
system?
Answer:
A. It must stay the same, but kinetic energy (KE) can be transformed to PE and PE can be transformed to KE within the system.
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Potential energy (PE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Furthermore, the total energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body.
Mathematically, it is given by the formula;
Total energy = P.E + K.E
The Law of Conservation of Energy states that energy cannot be destroyed but can only be transformed or converted from one form to another.
In this scenario, a system has both potential energy (PE) and kinetic energy (KE).
According to the law of conservation of energy, we can infer or deduce that the total energy of the system must stay the same because it cannot be destroyed, but kinetic energy (KE) can be transformed to potential energy (PE) and potential energy (PE) can be transformed to kinetic energy (KE) within the system.
e=mc² what is the name of the law?
Answer:
The name of law is mass engery law
Henry has 8 pieces of pizza that he wants to give equally to 3 friends how much pizza will each friend get
One thing you really notice is the complex, feathery, knotty structure of the gas and dust in our galaxy. If you look around, you can see a couple more objects that might be good candidates for being other galaxies with their own star-forming regions. What are these objects called
Answer:
Orion Nebula & cone nebula
Explanation:
From the huge, youthful stars that are forming the nebula to the pillars of thick gas that could be the homes of burgeoning stars, the Orion Nebula is a picture book of star formation. The four heaviest stars in the nebula reside in the bright central field. Since the stars are arranged in a trapezoid shape, they are known as the Trapezium.
These stars' ultraviolet radiation is cutting a hole in the nebula and stars that are already young enough to have disks of material encircling them can be seen near the Trapezium stars. Protoplanetary disks, also known as (proplyds) are too small to be seen distinctly and the disks are the foundation of solar systems.
The Cone Nebula is a monstrous creation, which resembles a nightmare beast flaring up from a crimson sea, is simply a benevolent pillar of gas and ashes. The Cone Nebula is so identified because it has a conical appearance in ground-based photographs. This massive pillar is located in a tumultuous star-forming area with gnarled mountainpeak of cold gas and dust is visible.
At which of the following angles will the sunlight received at a location on Earth spread out over the largest area?
90°
70°
40°
10°
Will mark BRAINLIEST* don't answer just for points or u will be reported. thanks :)
Answer:
10 degrees
Explanation:
I took the test :D
Particles in a medium through which a sound wave is traveling________. A move back and forth? B move randomly? C move in a circular motion? D move up and down?
Answer:
s ಕಣಗಳು ಒಂದು ಮಧ್ಯಮ ಟ್ರೋಗ್ ಹಲೋ ನೀವು ಹೇಗಿದ್ದೀರಿ ಬಿಎನ್ ನಾನು ಹಾಡುಗಳಿಂದ ಸುಳ್ಳಲ್ಲ
When was the most gravitational potential energy stored between the model and Earth? Assume that the model's mass did not change.
Answer:
As the ball falls from C to E, potential energy is converted to kinetic energy. The velocity of the ball increases as it falls, which means that the ball attains its greatest velocity, and thus its greatest kinetic energy
Explanation:
Answer:As the ball falls from C to E, potential energy is converted to kinetic energy. The velocity of the ball increases as it falls, which means that the ball attains its greatest velocity, and thus its greatest kinetic energy
Explanation:
Explain gravitational implicit energy in terms of work done against graveness.Show how knowledge of the implicit energy as a function of position can be used to simplify computations and explain physical marvels. Show that the gravitational potential energy of an object of mass m at height h on Earth is given by PEg=mgh.A. Obtain the following: microwave, ruler, something meltable (e.g. candy bar, marshmallows) B. A microwave works by setting up a standing electromagnetic wave inside of a box made of conducting materials. What is the value of an electric field inside a conductor
Answer:
E = 124.7 N / C
Explanation:
Let's analyze the exercise: the microwave creates an electromagnetic wave of frequency F = 2.45 GHz, this wave is introduced into the microwave cavity and is reflected on the metal walls, which is why one or more standing waves are formed.
The electric field of the standing wave is
I = E²
E =√I
where I is the intensity of the radiation.
What is it
I = P / A
where P is the effective emission power, almost all the power of the microwave and A is the area of the cavity, in the most used microwaves
P = 700 W and the area is A = 25 x 18 cm² = 0.045 m²
I = 700 / 0.045
I = 15555.56 W/m²
let's calculate the electric field
E = √15555.56
E = 124.7 N / C
Compare the number of electrons with the number of protons in a charged object.
which statement describes the molecules and a reaction once it reaches equilibrium
A. They maintain stable concentrations
B. They stop moving
C. They consist mainly of reactant molecules
D. They react only if they are disturbed
Answer:
They maintain stable concentrations
Explanation:
Just took the test.
The statement describes the molecules and a reaction once it reaches equilibrium: they maintain stable concentrations, which is option A as the When a chemical reaction reaches equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction.
What is equilibrium?Equilibrium is a dynamic state, meaning that the reaction is still ongoing but the rates of the forward and reverse reactions are equal. This means that molecules are still reacting with each other, but at a constant rate, so that the concentrations of the reactants and products remain stable. When a reaction is not at equilibrium, the concentrations of the reactants and products change as the reaction progresses. However, once equilibrium is reached, the concentrations of the reactants and products no longer change, but the individual molecules are still moving and reacting with each other.
Hence, The statement describes the molecules and a reaction once it reaches equilibrium: they maintain stable concentrations, which is an option. A
Learn more about equilibrium here.
https://brainly.com/question/19324885
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Copper zinc and magnesium do not contain any iron. What word is used to describe these types of
metals?
Answer:
Metals that do not contain traces or large proportions of iron in them are called Non-Ferrous metals.
If a coworker repeatedly asks you out for a date even though she knows you are not interested, what is she guilty of?
A. discrimination
OB. hate speech
OC. psychological harassment
O D. sexual harassment
What is meant by electricity and magnetism
Electricity is just the flow of electrons or charges from a point of production through a conductor, to another point where it can be utilized or converted to another form of energy.
Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges from two or more magnetic substances.
Answer:
By Electricity.. We mean the Flow of electrical power or Charge.
While Magnetism is a phenomenon that occurs from or by the Motion of Charges
Convex lenses cause light rays to _____.
Answer:
to meet at a single point
(causing rays of light that are initially parallel to meet at a single point)
hope this helps:)
Explanation:
Answer:
focus
Explanation:
see more here
https://youtu.be/CJ6aB5ULqa0
A closed loop conductor that forms a circle with a radius of 2.0 m is located in a uniform but changing magnetic field. If the maximum emf Induced in the loop is 5.0 V what is the maximum rate at which the magnetic field strength is changing if the magnetic field is oriented perpendicular to the plane in which the loop lies
Answer:
The maximum rate at which the magnetic field strength is changing if the magnetic field is oriented perpendicular to the plane in which the loop lies 0.398 T/s.
Explanation:
Given;
radius of the circular loop, r = 2.0 m
maximum induced emf, E = 5.0 V
The emf induced in a magnetic field is given as;
[tex]emf = \frac{d\phi}{dt} \\\\\phi = AB\\\\emf = A\frac{dB}{dt} \\\\\frac{dB}{dt} = \frac{emf}{A} \\\\where;\\A \ is \ the \ area \ circular \ l00p = \pi r^2 = \pi (2)^2 = 4\pi \ m^2\\\\\frac{dB}{dt} = \frac{5}{4\pi} \\\\\frac{dB}{dt} = 0.398 \ T/s[/tex]
Therefore, the maximum rate at which the magnetic field strength is changing if the magnetic field is oriented perpendicular to the plane in which the loop lies 0.398 T/s.
A thermionic tube with only a cathode and anode is called
Answer:
the simplest vacuum tube, the diode
A 17-mm-wide diffraction grating has rulings of 530 lines per millimeter. White light is incident normally on the grating. What is the longest wavelength that forms an intensity maximum in the fifth order
Answer:
377 nm
Explanation:
Number of lines per meter is, [tex]N &=530 \times 1000 \\ &=530000 \text { lines } / \mathrm{m} \end{aligned}[/tex]
Grating element is, [tex]d=\frac{1}{N}[/tex]
[tex]=1.8868 \times 10^{-6} \mathrm{~m}[tex]
Order is, n=5
Condition for maximum intensity is, [tex]d \sin \theta=n \lambda[/tex]
[tex]\lambda &=\frac{1.8868 \times 10^{-6}}{5(\sin 90)} \\ &=0.377 \times 10^{-6} \mathrm{~m} \\ &=377 \mathrm{~nm}[/tex]
A gyroscope slows from an initial rate of 34 rad/s at a rate of 0.619 rad/s2. The angular displacement when it stops moving is _
Answer: [tex]933.76\ rad[/tex]
Explanation:
Given
The initial rate of gyroscope is [tex]\omega_o=34\ rad/s[/tex]
Angular deceleration [tex]\alpha =0.619\ rad/s^2[/tex]
Using angular equation of motion
[tex]\Rightarrow \omega^2-\omega_o^2=2\alpha \theta[/tex]
Insert the values
[tex]\Rightarrow 0-34^2=2(-0.619)\theta \\\\\Rightarrow \theta =\dfrac{34^2}{2\times 0.619}\\\\\Rightarrow \theta =933.76\ rad[/tex]
Thus, the angular displacement is [tex]933.76\ rad[/tex]
Which of the following. Chemical represent the law of conservation of Matter?
Answer:
The answer is first one 1...
What is the flow rate of water in a pipe flowing full with an area of 0.3 m2 and velocity of 2.5 m/s?
Answer:
0.75 m³/s
Explanation:
Applying,
Q = vA.................... Equation 1
Where Q = flow rate of the water, v = velocity of the water, A = area of the pipe.
From the question,
Given: v = 2.5 m/s, A = 0.3 m²
Substitute these values into equation 1
Q = 2.5(0.3)
Q = 0.75 m³/s
Hence the flow rate of water in the pipe is 0.75 m³/s
A sound wave with a frequency of 700 Hz and a wavelength of 5 m travels through a liquid. How fast does sound travel through the liquid?
A.
140 m/s
B.
0.007 m/s
C.
3500 mHz
D.
3500 m/s
Which chemical reaction is most likely the slowest?
A. An egg is fried in a frying pan.
B. A ship with an iron hull rusts in seawater.
O
C. Wax reacts with oxygen when a candlewick is lit.
D. Cookies bake in an oven.
O
Please helpppppppppp!!!!!!!!!!!
what is the transfer of heat energy by direct contact. A . convection b. radiation c. thermal or heat and d. conduction
Answer:
d. conduction
Explanation:
Conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.
Any material or object that allow the conduction (transfer) of electric charge or thermal energy is generally referred to as a conductor. Conductors include metal, steel, aluminum, copper, frying pan, pot, spoon etc.
In conclusion, conduction typically involves the transfer of heat energy by direct contact between two or more conductors such as a pot and electric cooker.
Answer:
d. conduction
Explanation:
Conduction is the transfer of energy from one molecule to another by direct contact.