Answer:
Hello your question is quite Vague hence I will provide you with a general knowledge answer
answer :
Place an electrode in an electrolyte solutionApply a voltage source ( Dc voltage )Movement of ions from the cathode to the anode of the electrode will begin The movement of ions brings about Electrical currentExplanation:
Electricity is generated in electrolytes through the following steps :
Place an electrode in an electrolyte solutionApply a voltage source ( Dc voltage )Movement of ions from the cathode to the anode of the electrode will begin The movement of ions brings about Electrical currentIons are electrically charged atoms that are either positive or negative ( i.e. lost or gained an electron )
10. Which of the following is an electrical insulator?
A. a penny
B. a bike chain
C. a tree
D. a gold tooth
Answer:
c
Explanation:
every other option is a conductor
Underground caves can form in limestone through deposition.
A.) False
B.) True
Answer:
I think the answer is option B
An object has a kinetic energy of 50 J and a velocity of 5 m/s, what is the mass of the object?
Answer: 4 kg
Explanation:
Ke=1/2MV^2
plug in the kinectic energy and solve for M
50=1/2(M) (5^2)
M= 4
2. A 4.0 kg magnetic toy car traveling at 3.0 m/s east collides and sticks to a 5.0 kg toy magnetic car also traveling at 2.0 m/s east. Calculate the final speed and direction of the magnetic car (coupled) system?
Answer:
2.44 m/s due East
Explanation:
From the question given above, the following data were obtained:
Mass of 1st car (m₁) = 4 Kg
Velocity of 1st car (u₁) = 3 m/s
Mass of 2nd car (m₂) = 5 Kg
Velocity of 2nd car (u₂) = 2 m/s
Final velocity (v) =?
The final velocity can be obtained as follow:
v(m₁ + m₂) = m₁u₁ + m₂u₂
v(4 + 5) = (4×3) + (5×2)
9v = 12 + 10
9v = 22
Divide both side by 9
v = 22/9
v = 2.44 m/s
Thus, the final velocity is 2.44 m/s.
Since both cars was moving due East before collision, and after collision, they stick together, then their direction will be due East.
answer this plsss
A mobile phone operates at 900 MHz.
What wavelength does it use?
Answer:
The wavelength = 0.3333 meters at 900 MHz, therefore, = /4 = 0.08333 meters.
3. Jeremy has a solution with a mass of 228 g. He knows that the mass of the solvent was 224 g. How much is the mass of the solute in the solution?
Even though we have managed to vastly improve on flight since the early 1900's, engineers still work to
improve upon air travel. One of the best ways to engineer a new design for a particular product would be
to
Answer:
C. for sure
Explanation:
usatestprep
Can someone please give me this answer to this please
whar determines the direction of ocean currents
Answer:
The direction in which they rotate is determined by the hemisphere in which they are located. The main overall global wind patterns, the rotation of the Earth, and the shape of ocean basins are the three major factors that decide surface currents.
Oceanic factors are Tempature, salinity, density, pressure gradient and melting of ice. Atsmopheric factors are atsmopheric pressure, winds, rainfall, evaporation and insolation
Which choice best describes how scientists learn new information during investigations?
A. During investigations, scientists learn new information, ask questions, and then make observations.
B. During investigations, scientists make observations, use their observations to ask questions, and learn new information.
C. During investigations, scientists make measurements, collect and record information, ask a question, and then make observations.
During investigations, scientists collect and record data and then make observations.
Answer:
C
Explanation:
During investigations a scientist needs to observe, investigate, collect data and put together the information they collect.
Why do Tectonic Plates move?
A) convection currents in the atmosphere
B) convection currents in the crust
C) convection currents in the asthenosphere
D) Convection currents in the core
Answer:
c. convection currents in the asthenosphere
Explanation:
An object that looks white when exposed to sunlight reflects all colors of light. What
does a white object look like when it is exposed to blue light?
Calculate the net force of the object in the image shown 20N 15 N
can a body have zero velocity and finite acceleration?Explain
Answer:
Kinda? Depends what the question is fully asking
Explanation:
Acceleration is a change in velocity. So I guess if the velocity of something is -2 m/s and its positively accelerating at a value of +1 m/s, then that means every second its velocity changes by +1m/s.
So that -2 m/s thing after one second will be going -1 m/s.
After another second it'll be going 0 m/s.
After another itll be going +1 m/s and so on.
So at one point for a brief moment, it can have an acceleration but be at 0 m/s velocity.
What is the frequency of a light with the wavelength of 5.00 x 102 m?
Answer:
510 meters
Explanation:
That is sort of a math question but with the meters and wavelength, it's both a physical and a math question. Don't worry, i won't report (Unless you report my answer)
PLEASE HELP!
A 1500 kg car moves forward with 30 kg • m/s of
momentum. What is its velocity?
Select One:
a: -1470 m/s
b: 0.02 m/s
c: -50 m/s
d: 45,000 m/s
Answer: b
Explanation:
p=mv
p=30
m=1500
rearrange to find v
(30)=(1500)(v)
v= 30/1500
v = 0.02 m/s
An object falls from a height of 12m. The object's potential energy at the top is 50J. Where is the potential energy of the object
25J
Answer:
the height of the is 6 m.
Explanation:
Given;
potential energy of the object, P.E = 50 J
Height of fall of the object, H = 12 m
Determine the mass of the object, m
P.E = mgh
m = (P.E) / (gh)
m = (50) / (9.8 x 12)
m = 0.425 kg
Let the height of the object at 25 J = h₂
mgh₂ = 25
h₂ = (25) / (mg)
h₂ = (25) / (0.425 x 9.8)
h₂ = 6 m
Therefore, the height of the object at 25 J is 6 m.
Using the image, which area of the ocean floor would have the largest amount of pressure? Explain
Answer: the area were the most pressure is at the deep sea trench (the deepest part)
Explanation: because the more on top of you is the more pressure.
An oscillator is made with a rubber band and a block of wood
as shown in the diagram. What happens to the oscillator if we
make the block of wood heavier?
Answer:
Explanation:
a. The frequency increases.
b. The period increases.
c. The frequency stays the same.
d. The period stays the same
does anybody know what i can put for these 3 questions?
Which three parts of the graph’s curve represent the solid, liquid, and gaseous state of water? Explain your reasoning.
B,C,D maybe
Explanation:
plz dont get mad
Which image shows a situation where conduction occurs?
A box full of pieces of metal.
A woman holds a steaming mug.
A woman holds a frying pan above a stove while stirring.
Answer: A woman holds a steaming mug
Explanation:
Just did it
PLEASE HELP ME ASAP!!!
Answer:
90
Explanation:
The portion where gas turns to liquid
Newton's Law of inertia is sufficient to cause a planet to orbit the sun.
O True
O False
Answer: This is simply false.
Explanation:
Newton's Law of inertia is NOT sufficient to cause a planet to orbit the sun because gravity already does that.
I also had this question and I got it right.
Hope this helps!! <3
which statement is true about the reaction shown by this chemical equation HCl + NaOH ------> NaCl + H2O
Answer:
Endothermic
Explanation:
Ap3x
This is the type of Neutralization reaction. So, the correct option is (B).
What is Neutralization reaction?
Neutralization is defined as a chemical reaction in which an acid and a base react quantitatively with each other. Neutrality results from the absence of an excess of hydrogen or hydroxide ions present in the solution.
In this, acid and base react quantitatively to form salt and water as products. In a neutralization reaction, H+ ions and OH- ions combine to form water.
For example,
HCl + NaOH → NaCl + H₂O
Thus, this is the type of Neutralization reaction. So, the correct option is (B).
Learn more about Neutralization reaction, here:
https://brainly.com/question/28970253
#SPJ5
Your question is incomplete, most probably the complete question is :
Which statement is true about the reaction shown by this chemical equation HCl + NaOH ------> NaCl + H2O
1. Decomposition Reaction
2. Neutralization reaction
3. Combustion reaction
4. Synthesis reaction
If an owl produces two pellets every 24 hours and each pellet contains the remains of 3 prey, how much does it eat in a week? A month?
The owl eats 42 prey in a week and 180 prey in a month.
To calculate how much the owl eats in a week and a month, we need to determine the number of prey consumed in each time period.
In a week:
The owl produces two pellets every 24 hours. So, in one day, it consumes 2 * 3 = 6 prey (since each pellet contains the remains of 3 prey).
In a week (7 days), the owl consumes 6 * 7 = 42 prey.
In a month:
Assuming a month has 30 days (though some months have 31 days or 28/29 days), we can calculate the number of prey consumed in a month.
In a day: 6 prey
In a month (30 days): 6 * 30 = 180 prey.
Hence, the owl eats 42 prey in a week and 180 prey in a month.
To know more about prey here
https://brainly.com/question/32395792
#SPJ2
Use the drop-down menus to identify the part of the ear that performs each function.
Changes sounds to signals that the brain can understand: (Inner ear, middle ear, or outer ear)
Collects sound: (Inner ear, middle ear, or outer ear)
Passes sounds through vibrations: (Inner ear, middle ear, or outer ear)
Answer:
The answers to this question is:
1. inner ear
2. outer ear
3. middle ear
Explanation:
Hope that helps!
Answer:
inner, outer, middle
Explanation:
Use the graph. Which time period was
the car moving the fastest?
Answer:
1,2,3,4
Explanation:
Suppose you have a 34.9 m length of copper wire. If the wire is wrapped into a solenoid 0.240 m long and having a radius of 0.0510 m, how strong is the resulting magnetic field in its center when the current is 11.0 A?
Answer:
the strength of the magnetic field inside the solenoid is 6.278 x 10⁻³ T.
Explanation:
Given;
length of the wire, = 34.9 m
length of solenoid, L = 0.24 m
radius of the solenoid, r = 0.051 m
current in the solenoid, I = 11.0 A
The number of turns of the wire is calculated as follow;
[tex]N = \frac{34.9}{2\pi \times 0.051} = 109 \ turns[/tex]
The strength of the magnetic field inside the solenoid is calculated as follows;
[tex]B = \mu_0 (\frac{N}{L} )I\\\\B = 4\pi \times 10^{-7} \times (\frac{109}{0.24} )\times 11.0 \\\\B = 6.278 \times 10^{-3} \ T[/tex]
Therefore, the strength of the magnetic field inside the solenoid is 6.278 x 10⁻³ T.
You pull straight up on the string of a yo-yo with a force 0.19 N, and while your hand is moving up a distance 0.12 m, the yo-yo moves down a distance 0.30 m. The mass of the yo-yo is 0.058 kg, and it was initially moving downward with speed 3.4 m/s. (b) What is the new speed of the yo-yo
Answer:
2.54 m/s
Explanation:
By conservation of energy,
work done by force due to hand = mechanical energy gained by yo-yo
So Fd = mgh + 1/2m(v₂² - v₁²)
where F = force on string = 0.19 N, d = distance moved by hand = 0.12 m, m = mass of yo-yo = 0.058 kg, g = acceleration due to gravity = 9.8 m/s², h = distance moved by yo-yo = 0.30 m, v₁ = initial speed of yo-yo = 3.4 m/s and v₂ = final speed of yo-yo = unknown
So, Fd = mgh + 1/2m(v₂² - v₁²)
Fd/m = gh + 1/2(v₂² - v₁²)
Fd/m - gh = 1/2(v₂² - v₁²)
2(Fd/m - gh) = (v₂² - v₁²)
(v₂² - v₁²) = 2(Fd/m - gh)
v₂² = v₁² + 2(Fd/m - gh)
taking square-root of both sides, we have
v₂ = √[v₁² + 2(Fd/m - gh)]
Substituting the values of the variables into the equation, we have
v₂ = √[(3.4 m/s)² + 2(0.19 N × 0.12 m/0.058 kg - 9.8 m/s² × 0.30 m)]
v₂ = √[(3.4 m/s)² + 2(0.19 N × 0.12 m/0.058 kg - 9.8 m/s² × 0.30 m)]
v₂ = √[(3.4 m/s)² + 2(0.0228 Nm/0.058 kg - 9.8 m/s² × 0.30 m)]
v₂ = √[(3.4 m/s)² + 2(0.393 Nm/kg - 2.94 m²/s²)]
v₂ = √[(3.4 m/s)² + 2(-2.547 m²/s²)]
v₂ = √[11.56 m²/s² - 5.094 m²/s²)]
v₂ = √[6.466 m²/s²]
v₂ = 2.54 m/s
