Answer:
Effective resistance:
Rp = r/5 = 0.1/5 =0.02Ω
Explanation:
When the resistances are connected in parallel, the effective resistance becomes less than the smallest individual resistance. Thus smallest resistance is obtained when five0.1Ω resistors are connected in parallel.
Which description best explains why the view within the rectangle lens is different than the view outside the lens?
Light waves are restricted to a single plane through the lens.
Light waves disperse in multiple directions through the lens
Light waves disperse in various planes through the lens.
Light waves refract in multiple directions through the lens.
Answer:
A) Light waves are restricted to a single plane through the lens.
Explanation:
Took the quiz and got it right
Final answer:
The view inside a lens differs from the outside because light waves refract in multiple directions within the lens, a process essential for lenses to form images by bending light.
Explanation:
The view within the rectangle lens is different than the view outside the lens because light waves refract in multiple directions through the lens. When light waves enter the lens, they experience refraction both when they enter and exit the lens medium. The concept of refraction is inherently three-dimensional and is based on the principle that when light passes through variations in matter, its direction changes due to the different speeds at which light travels in different media. This bending of light is essential for lenses to redirect light and form images, whether they are magnified, shrunk, or inverted.
Lenses like the eye's crystalline lens or a microscope's glass lens use refraction to form images by bending light towards or away from the line perpendicular to the boundary surface. The thin lens approximation simplifies this process by considering the double refraction through the lens as a single change in path occurring at the plane of the lens. An example of this principle in action would be rays of light entering a diverging lens and appearing to originate from its focal point due to their diverging paths.
Help me, it’s for physical science
Answer:
dropping a marble from the roof
Explanation:
this represents gravitational force which is infact a non-contact force
the chart below compares the characteristics of four objects discovered in the solar system. which of these objects is most likely to be a planet?
The object discovered in the solar system that has been most likely to be a planet has been object A.
What is a planet?A planet is an object present in the solar system with the ability to revolve around a star. It has been considered a celestial body, with the presence of a specified force of gravity.
As Kepler's laws of planetary motion suggest that the orbits are elliptical with the sun at a focus. So it is not necessary that the orbit is circular or the shape is circular. Also, it is necessary that the orbit is around the sun.
Of the objects discovered in the solar system, object A has been revolving around the sun that starts with the circular orbit and has been found to be present in Kepler's belt as well. Thus, object A has been most likely to be a planet.
Learn more about planet, here:
https://brainly.com/question/13851553
#SPJ5
the normal formula to find force is F = m* a. What kind of math do you need to do
to find the mass of an object?
Final answer:
The mass of an object can be found by rearranging the force equation F = ma to m = F/a and dividing the force by the acceleration. This requires basic algebraic manipulation. Using the units of newtons (N) for force and meters per second squared (m/s²) for acceleration will yield the mass in kilograms (kg).
Explanation:
To find the mass of an object using Newton's second law of motion, you would rearrange the typical force equation F = ma to solve for m. This rearranged formula becomes m = F/a. This mathematical operation requires basic algebra to isolate the variable m (mass). For example, if you know the force acting on an object and its acceleration, you just need to divide the force by the acceleration to obtain the mass. For instance, consider an object where a force of 22 Newtons causes an acceleration of 2.00 m/s², to calculate the mass you would simply perform the calculation m = F/a which becomes m = 22 N / 2.00 m/s² leading to m = 11 kg. It's important to use units of newtons for force, meters per second squared for acceleration, and the result will be in kilograms for mass.
When applying this to real-world problems, like determining the force on a wagon or calculating the normal force on an object, the process is the same. For forces in equilibrium, such as an object at rest on a surface, the normal force is often equal to the weight of the object, which can be calculated using F = mg, where g is the acceleration due to gravity.
Which circuit has the least/weakest current? *
9V Battery
1.5V AA Battery
9 V Battery has the least current than 1.5 V AA Battery.
Explanation:
A standard 9 V battery has about 400-600 mAh capacity. In the most basic terms, these batteries can supply about 500 milliamps for one hour before being "dead".
Normal AA/AAA batteries that have a voltage rating of 1.5 V can supply constant 50 mA current for a total capacity of 1800-2600 mAh.
Therefore 9 V Battery which have current around 400-600 mAh capacity has the least current than 1.5 V AA Battery which have 1800-2600 mAh capacity.
which electromagnetic waves have the highest energy?
A) gamma rays
B) light waves
C) radio waves
D) X-rays
Answer:
Gamma ways
Explanation:
The shortest wavelengths,AND the highest frequencies
Which of the following is an example in which kinetic energy is converted to potential energy?
O A. A rock falls down a cliff.
OB. A match burns.
OC. A spring is stretched.
OD. A light bulb glows brightly.
Answer:
C. A spring is stretched.
Explanation:
Kinetic energy is the energy of motion, potential energy is stored energy. The motion of stretching the spring is kinetic, the energy it has before it's released is potential.
When a spring is stretched, it stores potential energy.
Explanation:The correct answer is C. A spring is stretched. This is an example of kinetic energy being converted to potential energy because when a spring is stretched, it stores potential energy. Kinetic energy refers to the energy of an object due to its motion, while potential energy is the energy that an object possesses due to its position or state.
In this example, when a spring is compressed or stretched, work is done to change its shape. As a result, potential energy is stored in the spring. When the spring is released, the potential energy is converted back into kinetic energy as the spring returns to its original shape and moves.
This conversion between kinetic energy and potential energy is a fundamental concept in physics and can be observed in various everyday examples such as stretched springs, raised objects, or compressed gas.
Learn more about the Conversion of kinetic energy to potential energy here:https://brainly.com/question/10427150
#SPJ2
Elephants can communicate using very low frequency sound waves over long distances. An elephant makes a noise below human hearing at 16Hz. This low rumble moves at 350 m/s (speed of sound in air). This sound is detected by her friend 25 seconds later.
How far away is her friend?
Answer:
8750 m
Explanation:
S= v x t
S= 350 x 25
S= 8750 m
The elephant's friend is 8750 meters away.
The subject of this question is Physics, specifically related to sound waves and their travel. The question involves an elephant communicating with infrasound at 16 Hz and determining the distance between it and the receiver of the sound by using the speed of sound in air. To answer how far away her friend is, you would use the equation of distance traveled by the wave, which is the product of the wave's speed and the time it took to reach the receiver.
Distance = Speed of Sound × Time
Distance = 350 m/s × 25 s
Distance = 8750 m
The Milky Way galaxy contains interstellar matter that may a. Form new galaxies b. Form new stars c. Form new universes D. Form new constellations
The interstellar matter within the Milky Way galaxy primarily contributes to the formation of new stars, not new galaxies, new universes, or new constellations. Constellations are not formed but are simply patterns or configurations of stars as observed from the Earth.
Explanation:The Milky Way galaxy, which is the galaxy that contains our solar system, is composed of various forms of interstellar matter that include stars, dust, and gas. This interstellar matter has the potential to contribute to the formation of new celestial bodies. Forming new galaxies or new universes as suggested in the question, however, is not typically attributed to the interstellar matter within the Milky Way itself.
Instead, the interstellar matter in the Milky Way is primarily involved in forming new stars. This occurs when dense regions of dust and gas collapse under their own gravitational pull, thus initiating nuclear fusion and creating a new star.
Learn more about Interstellar Matter here:https://brainly.com/question/32057908
#SPJ3
During which type of change can an atom of carbon become an atom of nitrogen?
A. Chemical
B. Physical
C. Nuclear
D. Phase
Answer:
C.) Nuclear
Explanation:
Answer:
it's C
Explanation:
Lorenzo di Medici was:
A. a composer of Italian madrigals.
B. a music publisher.
C. a pope.
D. a patron of the arts.
The answer is a patron of the arts.
Additional information:The name of the father of lorenzo di medici is Piero the Goutus and the name of mother is Lucrezia Tornabuoni.
He died at the age of 43. He was buried in the medici chapel in florence.
Hope this will help u...:)
Answer:
it's D
Explanation:
How is photon energy calculated? (choose 2)
o Using Plank's constant.
o It cannot be calculated.
o Using the frequency.
Answer:
Explanation:
Based on the wave model of light, physicists predicted that increasing light amplitude would increase the kinetic energy of emitted photoelectrons, while increasing the frequency would increase measured current.
Contrary to the predictions, experiments showed that increasing the light frequency increased the kinetic energy of the photoelectrons, and increasing the light amplitude increased the current.
Based on these findings, Einstein proposed that light behaved like a stream of particles called photons with an energy of \text{E}=h\nuE=hνstart text, E, end text, equals, h, \nu.
The work function, \PhiΦ\Phi, is the minimum amount of energy required to induce photoemission of electrons from a metal surface, and the value of \PhiΦ\Phi depends on the metal.
The energy of the incident photon must be equal to the sum of the metal's work function and the photoelectron kinetic energy:
El gas encerrado en un recipiente con las paredes rigidas esta a una presion de 150 000 Pa. La temperatura del gas es de 27°C A que temperatura en Kelvin y grados Celcius hay que calentar el gas para que la presion sea 300 000 Pa???
Answer:
The gas enclosed in a container with rigid walls is at a pressure of 150,000 Pa. The temperature of the gas is 27 ° C. At what temperature in Kelvin and degrees Celcius does the gas have to be heated so that the pressure is 300,000 Pa?
Explanation:
Given that,
When the temperature is 27°C, it's pressure is 150,000 Pa
Then,
T₁ = 27°C
Let convert to Melvin
T₁ = 27 + 273 = 300K
P₁ = 150,000 Pa
What's the temperature when it is heated to a pressure of 300,000 Pa
T₂ =?
P₂ = 300,000 Pa
Since the gas is in a rigid wall container then the volume does not change so,
V₁ = V₂
Using Gay Lussac law,
P₁ / T₁ = P₂ / T₂
Making T₂ subject of formula
T₂ = P₂ × T₁ / P₁
T₂ = 300,000 × 300 / 150,000
T₂ = 600K
So, converting to °C
°C = K - 273
°C = 600 - 273
°C = 327 °C
Then, the final temperature at 300,000 Pa is 600K OR 327°C
So, using Spanish
Dado que,
Cuando la temperatura es de 27 ° C, su presión es de 150,000 Pa
Entonces,
T₁ = 27 ° C
Deje convertir a Melvin
T₁ = 27 + 273 = 300K
P₁ = 150,000 Pa
¿Cuál es la temperatura cuando se calienta a una presión de 300,000 Pa?
T₂ =?
P₂ = 300,000 Pa
Como el gas está en un contenedor de pared rígido, el volumen no cambia,
V₁ = V₂
Usando la ley Gay Lussac,
P₁ / T₁ = P₂ / T₂
Hacer T₂ sujeto de fórmula
T₂ = P₂ × T₁ / P₁
T₂ = 300,000 × 300 / 150,000
T₂ = 600K
Entonces, convirtiendo a ° C
° C = K - 273
° C = 600 - 273
° C = 327 ° C
Entonces, la temperatura final a 300,000 Pa es 600K o 327 ° C
For light waves, the frequency determines the color we see. The highest frequencies of light are at the _______end of the visible spectrum; the lowest frequencies appear at the ______ end of this spectrum. *
4 points
green, yellow
blue, red
yellow, green
red, blue
Answer: Blue, Red
Explanation:
The highest frequencies of light are at the Blue end of the visible spectrum. The blue end of the visible have short wavelengths.
While the lowest frequencies of light can be found in the Red end of the visible spectrum . They are known to have long wavelengths.
Which of the following sources is likely to provide the most reliable scientific
information about a new kind of motor oil?
O
A. A news article that explains how the motor oil is designed
O
B. The website of the company that sells the motor oil
O
c. A newspaper ad for the motor oil
O
D. A peer-reviewed article about the effectiveness of the motor oil
A peer-reviewed article about the effectiveness of the motor oil is most likely to provide the most reliable scientific information about a new kind of motor oil. So, option D.
What is meant by motor oil ?Motor oil is a lubricant used in the moving parts of a engines, vehicles and other machines.
Engines have moving parts that rub against one another, wasting heat instead of kinetic energy that would otherwise be beneficial. Furthermore, it degrades those components, which can cause the engine to run less efficiently and become less reliable.
In addition to extending the life of engines, proper lubrication reduces fuel use and wasted power.
In order to prevent direct contact between surfaces of adjacent moving parts, lubricating oil forms a separating layer between them. This minimizes frictional heat generation and wear, safeguarding the engine. When in use, motor oil conducts heat as it moves through the engine. This heat is transported through airflow over the external surface of the oil pan, airflow through an oil cooler, and through oil gases expelled by the positive crankcase ventilation (PCV) system in an engine with a recirculating oil pump.
Peer-reviewed journals and books are regarded as the most dependable sources and are frequently a great resource for finding reliable and scientific content.
Hence,
A peer-reviewed article about the effectiveness of the motor oil is most likely to provide the most reliable scientific information about a new kind of motor oil.
To learn more about motor oil, click:
https://brainly.com/question/15899321
#SPJ7
A scientist is studying an organelle that is controlling the amount and types of substances that are moving in and out of a cell. She is observing the _________________________
Answer:
Plasma membrane
Explanation:
A scientist is studying an organelle that is controlling the amount and types of substances that are moving in and out of a cell. She is observing the cell membrane.
What is a cell membrane?The cell membrane, also known as the plasma membrane, is found in all cells and serves to isolate the cell's interior from its exterior environment.
The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane handles the transmission of materials into and out of the cell.
The cell membrane, also known as the plasma membrane, is the outer covering of a living cell that completely covers the cytoplasm as well as nucleus.
Glycerophospholipids, molecules constituted of glycerol, a phosphate group, or rather two fatty acid chains, make up cellular membranes, including plasma membranes and internal membranes.
Glycerol is a three-carbon molecule that serves as the membrane lipids' backbone.
Thus, the scientist is observing the plasma membrane as it aids in the transport of material in and out of the cell.
For more details regarding plasma membrane, visit:
https://brainly.com/question/14727404
#SPJ2
Kinetic Energy - What does it depend on?
The greater the ______________ of a moving object, the _____________________ it has.
Help!
Answer:
faster; more kinetic energy
Explanation:
Electromagnetic waves do require a medium to travel.
True
False
Answer:
The Answer is false
Explanation:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
Answer:
false
Explanation:
water with pressure of 190 kPa flows down hill through a pipe with a 3.90 cm diameter hose at a speed of 1.2 m/s. It then exits through a smaller pipe m of diameter 1.50 cm which is 5.00 m below the upper pipe.
a. What is the speed of the water exiting at the lower pipe opening?
b. What is the water pressure at the exit of the lower pipe. ?
Answer:
a) v₂ = 8,112 m / s , b) P₂ = 206.8 10³ Pa
Explanation:
This is a fluid mechanics exercise, let's use index 1 for thick pipe and index 2 for thinner pipe
a) with the continuity equation it allows to find the speed of the water
v₁ A₁ = v₂ A₂
the area of a circle is
A₁ = π r₁² = π d₁² / 4
v₂ = v₁ d₁² / d₂²
let's calculate
v₂ = 1.2 3.90² / 1.50²
v₂ = 8,112 m / s
b) We use Bernoulli's equation
P₁ + ½ ρ v₁² + ρ g y₁ = P₂ + ½ ρ v₂² + ρ g y₂
P2 = P1 + ½ ρ (v₁² - v₂²) +ρ g (y₁ -y₂)
let's calculate
P₂ = 190 10³ + ½ 1000 (1.2² - 8.112²) + 1000 9.8 5
P₂ = 206.8 10³ Pa
The color of ink is a what change or property.
Answer:
Property
Explanation:
Physical properties are used to observe and describe an object like color, texture, and odor.
Answer:
Physical change ?
Explanation:
On a bus traveling north at 20.0m/s, a child stands up and walks towards the back of
the bus at 1.3m/s. What is the child's resultant velocity?
The child's resultant velocity is 21.3 m/s.
Explanation:The resultant velocity of the child can be determined by subtracting the child's velocity from the velocity of the bus. In this case, the child is walking towards the back of the bus, so their velocity is negative. Therefore, the resultant velocity of the child is:
https://brainly.com/question/29136833
#SPJ2
Which of the following is an example of how pictures of a planet's surface can provide evidence about the planet's natural resources?
A.
Pictures showing craters suggest the presence of gold.
B.
Pictures showing clouds suggest the presence of free oxygen.
C.
Pictures showing rocks suggest the presence of natural gas.
D.
Pictures showing valleys suggest the presence of water.
Final answer:
Pictures of valleys on a planet's surface can indicate the presence of water, a critical natural resource, whereas other features like craters or rocks might suggest different geological aspects but not specific resources.
Explanation:
When considering pictures of a planet's surface to provide evidence about the planet's natural resources, there are specific indicators to look for. For instance, valleys often signify past or present water flow, as they are typically formed by this process. Figure 10.30 from Gale Crater and Underground Ice Deposits demonstrates this, showing cross-bedded sandstone, which geologists interpret as evidence of liquid water activity. Therefore, valleys on a planet's surface can indicate the presence of water, which is a crucial natural resource. Other features, such as craters or rocks, may suggest geological activity, age, or the presence of minerals, but not necessarily specific resources like gold or natural gas without additional data.
In western states, many homes generate electricity from windmills. in a particular home, a young boy is using electricity to run a toy electric train. name 2 transformations.
Answer: He could be using batteries or it is rechargeable
A ball rolls horizontally off a bookshelf of height 1.7 m with a speed of 2 m/s
How long does it take the ball to reach the ground?
O A. 1.25
O B. 0.595
OC. 0.85
O D. 0.33 s
Answer:
0.59s
Explanation:
A p e x
A ball rolls horizontally off a bookshelf at a height of 1.7 m with a speed of 2 m/s then it takes 0.59 seconds. Hence, option B is correct.
What is acceleration?Acceleration is the rate at which the direction and speed of motion evolve over time. Anything was shown to be accelerated when it goes straighter and faster or slower. Motion on a circle therefore accelerates even though the speed is constant, so because direction is always changing. All those other types of movement experience an acceleration as a result of these factors.
It is a vector quantity because acceleration includes both a magnitude and a direction. The other vector quantity is velocity.
Use the equation of motion,
s = ut + 1/2 at²
1.7 = 2 (t) +1/2(-9.8)t²
t = 0.59 seconds.
Therefore, the time will be equal to 0.59 seconds. So option B is the correct one.
To know more about acceleration:
https://brainly.com/question/12550364
#SPJ5
Compared to visible light, the wavelength of X-rays is and the frequency is .
Answer:
Shorter and higher
Explanation:
I did this lesson and i got it right :D hope it helps
Compared to visible light, the wavelength of X-rays is smaller and the frequency is greater.
What is electromagnetic spectrum?The electromagnetic spectrum consists of waves arranged based on the increasing frequency of the waves or decreasing wavelength of the waves.
Electromagnetic spectrum based on decreasing frequency and increasing wavelength;
Gamma raysX-raysUltraviolet rayVisible lightInfra redMicro waveRadio wavesThus, compared to visible light, the wavelength of X-rays is smaller and the frequency is greater.
Learn more about electromagnetic spectrum here: https://brainly.com/question/25847009
PLZZZ HELP!!!
Why does a siren have a higher pitch as it approaches you?
The amplitude of the sound wave is increased.
The crests of the sound wave are spaced closer together.
The troughs of the sound wave are farther apart.
The period of the sound wave is increased.
Answer:
The crests of the sound wave are spaced closer together.
Explanation:
the wavelength between successive crests is decreased due to the motion of the truck in the same direction as the sound
Answer and Explanation: The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener. As the source of sound waves approaches a listener, the sound waves get closer together, increasing their frequency and the pitch of the sound.
Hopefully that helped!
Plzz I need answer in 1 mint
Answer:
The answer is A i think :)
Can someone help me with these net force diagrams?
Answer:
its like game controlls the 1st doesnt move R L R R R R it matters on the arrows pay attention to the directions take the arrows away then put them back to see what u get 1 at a time its newtons third law
Explanation:
A ray in air hits the surface of water at 41.0 deg. At what angle does it travel in the water?
(Unit=deg)
Answer:
r = 29.53 degrees
Explanation:
Given that,
Angle of incidence, [tex]i=41^{\circ}[/tex]
We need to find the angle at which it will travel in the water. The refractive index of water is 1.33 and refractive index of air is 1. Using Snell's law as :
[tex]n_1\sin i=n_2\sin r[/tex]
r is the angle of refraction
[tex]\sin r=\dfrac{n_1}{n_2}\sin i\\\\\sin r=\dfrac{1}{1.33}\times \sin (41) \\\\r=\sin^{-1}(0.493)\\\\r=29.53^{\circ}[/tex]
So, the ray will travel at an angle of 29.53 degrees in the water.
Answer:
29.53
Explanation:
right on acellus
( Can someone help? )
A 6-column table with 2 rows. The first column labeled number of washers has entries 1, 2. The second column labeled initial velocity v subscript 1 (meters per second) has entries 0.11, 0.13. The third column labeled final velocity v subscript 2 (meters per second) has entries 0.28, 0.36. The fourth column labeled time to travel 0.25 meters t subscript 1 (seconds) has entries 2.23, 1.96. The fifth column labeled time to travel 0.5 meters t subscript 2 (seconds) has entries 3.13, 2.61. The sixth column labeled Acceleration a = StartFraction (v subscript 2 minus v subscript 1) over (t subscript 2 minus t subscript 1) EndFraction (meters per second squared) has entries 0.19 and empty.
The acceleration of the car with two washers added to the string would be
Answer:
Answer would be 0.33
Explanation:
Calculations
Answer:
The answer is 0.33
Explanation:
because if (v2-v1)/(t2-t1)
then if you fill it in then you could definetly get the answer.