Answer:
Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce.
Explanation:
Answer:
Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce. Frequently, "artificial silk" is just a synonym for rayon. When made out of bamboo viscose it is also sometimes called bamboo silk.
Differentiate between:
a. Compression and Rarefaction
Answer:
Explanation:
Compression
The region in a medium where the distance between the vibrating molecules is minimum is compression.
This is the region with higher air pressure than the surrounding .
Rarefaction
The region in a medium where the distance between the vibrating molecules is maximum is rarefaction.
This is the region with relatively low air pressure.
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A Cathode of initial mass 10.00g weigh to 10.05g
after a Current of SA passes through the voltmeter of 10 minutes - Calculate the E.C.E of the metal deposed
Answer:
i'm sorry i'm not a physics student
identify 2 properties of sound waves
Select the correct answer?
Answer:
The answer is d i think so yea
Explanation:
hope u hae a really good day
The shortening of a transmitted signal's wavelength and/or an increase in its frequency, which indicates that the object is
moving toward the observer, is called the
Answer: The Doppler effect occurs when a source of a wave is moving relative to an observer (or the observer is moving relative to the source). In this case, the apparent frequency of the sound, as heard/seen by the observer, is shifted with respect to the original frequency of the wave.
More specifically, the relationship between the apparent frequency, f', and the original frequency, f, is given by:
where:
is the velocity of the wave
is the velocity of the observer relative to the source, and it is positive if the observer is moving towards the source, and negative if the observer is moving away from the source
is the velocity of the source relative to the observer, and it is positive if the source is moving away from the observer, and negative if the source is moving towards the observer
The doppler effect occurs in many daily-life situations: for instance, when an ambulance approaches you, you hear an increase in the apparent frequency of the siren due to the Doppler effect. Another example is the movements of distant galaxies from us: when they move away from us, the apparent frequency of the light they emit decreases, so their wavelengths appear to increase towards the red color (red-shift); on the contrary, when they are moving towards us, the apparent frequency seems to increase, so the wavelength seems to decrease towards the blue color (blue-shift).
Explanation:
Three resistors of 100, 40.0, and
10.0 Ohms are in series with a
24.0 V power supply. What is the
current in the circuit?
Answer:
0.16 A
Explanation:
V = IRtotal
24V = I(100 + 40 + 10)
I = 0.16 A
Answer: 0.16 is correct
Explanation:
PLEASE HELP ME
Which refers to the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound? period compression amplitude intensity
Answer: Thanks for the points!
Explanation: The average amount of energy passing through a unit area per unit of time in a specified direction is called the intensity of the wave. As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.
Answer:
Amplitude
Explanation:
Refer to the diagram to answer the question. Which part of the eye enables it to focus? A B C D E
Answer:
what are the A B C D E
Explanation:
Which statement describes an interacting force pair represented by the third law of motion? The force exerted by a cyclist equals the combined forces of friction and air resistance. A car exerts a force on a bug as they collide and the bug exerts an equal force on the car. Gravity exerts a downward force on a refrigerator and the normal force pushes up on the refrigerator. Two people pull on opposite ends of a rope, but the rope does not move because the people pull with equal forces.
Answer:
A car exerts a force on a bug as they collide and the bug exerts an equal force on the car.
Explanation:
Newton's third law of motion states that for every action there is an equal and opposite reaction.
Action-reaction force pairs make it possible for fishes to swim, birds to fly, cars to move etc,
Furthermore, take for example, While driving down the road, a firefly strikes the windshield of a car (Action) and makes a quite obvious mess in front of the face of the driver (Reaction) i.e The firefly hit the car and the car hits the firefly.
Hence, the statement which best describes an interacting force pair represented by the third law of motion is, a car exerts a force on a bug as they collide and the bug exerts an equal force on the car.
The ultimately implies that, in every interaction, there is a pair of forces acting on the two interacting objects in this case, the car and bug. The size of the force on the car equals the size of the force on the bug. These two forces are called action and reaction forces and are the subject of Newton's third law of motion.
¿Qué pasa en nuestro cerebro cuando tomamos decisiones? Ejemplo: Estoy tocando una plancha caliente, y saco la mano rápidamente, ¿que paso en mi cerebro?
Answer:
Debido a la información de las neuronas sensoriales al cerebro.
Explicación:
Cuando toco una plancha caliente, extiendo la mano rápidamente porque las neuronas sensoriales presentes en la piel de nuestro cuerpo envían señales al sistema nervioso central, es decir, al cerebro. El cerebro toma decisiones de acuerdo con los estímulos y envía instrucciones a través de las neuronas motoras a los músculos para retirar las manos del hierro caliente a fin de evitar efectos nocivos en la piel debido al calor. El lóbulo frontal es una parte del cerebro que controla la personalidad, la toma de decisiones y el razonamiento.
If you increase the frequency of a sound wave four times, what will happen to its speed?
A. The speed will increase four times.
B. The speed will decrease four times.
C. The speed will remain the same.
D. The speed will increase twice.
E. The speed will decrease twice.
Answer:
d
Explanation:
If a person meets an accident, which of the following factors will have more effect on his Kinetic energy and hence on the fatality of the accident?
A.velocity of the vehicle
B.Mass of the vehicle
Answer:
b
Explanation:
How many free electrons are there in 2.55 cm^ ^ 3 of pure Silicon Note N = Vp and rho = 1.54 free electrons / cm ^3
A: 3.93 x 10^20 free electrons
B: 6.32 x 10^20 free electrons
C: 3.93 x 10^22 free electrons
D: 6.32 x 10^2× free electrons
Answer:
C: 3.93 x 10^22 free electrons
Explanation:
The no. of free electrons can be found out using the following formula:
[tex]N = V\rho\\[/tex]
where,
N = No. of free electrons = ?
V = Volume = 2.55 cm³
ρ = density of electrons = 1.54 x 10²² free electrons/cm³
Therefore, using these values in the equation, we get:
[tex]N = (2.55\ cm^3)(1.54\ x\ 10^{22}\ free\ electrons/cm^3)\\[/tex]
N = 3.93 x 10²² free electrons
Therefore, the correct option is:
C: 3.93 x 10^22 free electrons
Use the drop-down menus to complete the sentences.
A thin wire has
resistance than a thick wire.
A short wire has
resistance than a long wire.
A warm wire has
resistance than a cool wire.
Answer:
A thin wire has more resistance than a thick wire
A short wire has less resistance than a long wire
A warm wire has more resistance than a cool wire
Answer: More, less, more
Explanation:
Edge 2021
Help science 70 points
first. this is only worth 38 points second it's B
Answer:
Explanation: