Answers
a rc circuit is constructed with a (initially uncharged) 5 uf capacitor and a 5-ohm resistor which are connected in series to an ideal battery with emf 60 is Q = CV = 9.5 x 10^-6 x 70 = 6.65 x 10^-4 C
What is constructed?
To create something by combining or arranging various pieces or components: the act of building a bridge. also: invent and contrive. put together a plan. to create a drawing of a geometrical figure using the appropriate tools and under the required circumstances
a) time constant = RC = 16.5 x 10^3 x 9.5 x 10^-6 = 0.157 s
b) V = V0 ( 1- e ^ -(t/RC))
after very long time,
V = V0 = e = 105 V
c) Q = CV = 9.5 x 10^-6 x 105 = 9.97 x 10^-4 C
d) I = I0 ( e^(-t/RC))
I0 = e/R = 105/16.5x10^3 = 6.36 mA
after very long time I = 0
e) I0/3 = I0 ( e^-t/RC)
e^-t/RC = (1/3)
-t/RC = ln(1/3)
t = 1.10 x RC = 0.172 sec
f)) V = 105( 1 - e^(-t/RC))
V = 105 ( 1 - e^(-(0.172/0.157)) )
V = 70 V
Q = CV = 9.5 x 10^-6 x 70 = 6.65 x 10^-4 C
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Related Questions
Engineers are working on a design for a cylindrical space habitation with a diameter of 7.50 km and length of 29.0 km. The habitation will simulate gravity by rotating along its axis. With what speed (in rad/s) should the habitation rotate so that the acceleration on its inner curved walls equals 8 times Earth's gravity
Answers
Answer:
The speed will be "0.144 rad/s".
Explanation:
Given that,
Diameter,
d = 7.50 km
Radius,
R = \(\frac{7.5}{2} \ Km\)
Acceleration on inner curve,
= 8 times
Now,
As we know,
⇒ \(\omega^2R=8g\)
or,
⇒ \(\omega=\sqrt{\frac{8g}{R} }\)
On substituting the values, we get
⇒ \(=\sqrt{\frac{8\times 9.8}{\frac{7.5}{2}\times 10^3 } }\)
⇒ \(=\sqrt{\frac{78.4}{3750} }\)
⇒ \(=\sqrt{0.0209}\)
⇒ \(=0.144 \ rad/s\)
Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. Each step is of uniform height
. The mass of each object is a multiple of the base mass
: object 1 has mass 4.60
, object 2 has mass 2.21
, and object 3 has mass
. When the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero.
Each answer requires the numerical coefficient to an algebraic expression that uses some combination of the variables , , and , where is the acceleration due to gravity. Enter only the numerical coefficient. (Example: If the answer is 1.23 , just enter 1.23)
Image showing three masses, 1, 2, and 3, and three steps, each of height D. The three masses are shown at the base of the steps. Arrows indicate that mass 1 is placed on the top step at height 3 D, mass 2 is placed on the middle step at height 2 D, and mass 3 is placed on the bottom step at height D.
If the objects are positioned on the steps as shown, what is gravitational potential energy ,system of the system?
If you redefine the reference height such that the total potential energy of the system is zero, how high ℎ0 above the bottom of the stairs is the new reference height?
Now, find a new reference height ℎ′0 (measured from the base of the stairs) such that the highest two objects have the exact same gravitational potential energy.
Answers
a) The gravitational potential energy of the system of three masses at the given positions is 188.36md.
(b) The redefined reference height is h₀ = 0.55d.
(c) The new reference height measured from the base is h₀' = 0.96d.
What is the gravitational potential energy of the system?
(a) The gravitational potential energy of the system of three masses at the given positions is calculated as;
total gravitational potential energy = P.E(mass 1) + P.E(mass 2) + P.E(mass 3)
T.G.P.E = m₁gh₁ + m₂gh₂ + m₃gh₃
where;
mass of object 1, m₁ = 4.6mmass of object 2, m₂ = 2.21mmass of object 3, m₃ = mh₁ = 3dh₂ = 2dh₃ = dT.G.P.E = (4.6m x 9.8 x 3d) + (2.21m x 9.8 x 2d) + (m x 9.8 x d)
T.G.P.E = 135.24md + 43.32md + 9.8md
T.G.P.E = 188.36md
(b) The redefined reference height is calculated as follows;
0 = (4.6m x 9.8 x h₀) + (2.21m x 9.8 x (h₀ - d) + (m x 9.8 x (h₀ - 2d)
0 = 45.08mh₀ + 21.66mh₀ - 21.66md + 9.8mh₀ - 19.6md
0 = 45.08h₀ + 21.66h₀ - 21.66d + 9.8h₀ - 19.6d
0 = 76.54h₀ - 41.26d
76.54h₀ = 41.26d
h₀ = 41.26d/75.54
h₀ = 0.55d
(c) The new reference height measured from the base such that the highest two objects have the exact same gravitational potential energy is calculated as follows;
m₂gh₂ = m₁gh₁
2.21m x 9.8 x h₂ = 4.6m x 9.8 x h₁
21.66mh₂ = 45.08mh₃
21.66h₂ = 45.08h₁
h₁ = 21.66h₂/45.08
h₁ = 0.48h₂
h₀' = 0.48 x (2d)
h₀' = 0.96d
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Balloon A has charge q, and identical mass balloon B has charge 10q. You hang them from threads near each other. Choose all of the statements with which you agree. Check all that apply. A.) The force that A exerts on B is 10 times the force that B exerts on A. B.) The angle between the thread supporting A and the vertical is less than the angle between the thread supporting B and the vertical. C.) The force that A exerts on B is 1/10 the force that B exerts on A. D.) A and B exert the same magnitude forces on each other.
Answers
The required option is A.) The force that A exerts on B is 10 times the force that B exerts on A., C.) The force that A exerts on B is 1/10 the force that B exerts on A.
What is electrostatics force?Non-contact forces, such as electrostatic forces, pull or push on objects without actually making contact with them. When certain materials are rubbed together, a phenomenon known as "charge" can be transferred from one surface to another. Uncharged items are pulled by charged objects, which in turn may push or pull against other charged ones.
According to question:For options
A.) The force that A exerts on B is 10 times the force that B exerts on A.
C.) The force that A exerts on B is 1/10 the force that B exerts on A.
because,
The forces between two charged objects are proportional to the product of the charges and inversely proportional to the square of the distance between the objects. So, the force that A exerts on B is proportional to q * 10q / d^2 and the force that B exerts on A is proportional to 10q * q / d^2, where d is the distance between the two objects. Thus, the force that A exerts on B is 10 times the force that B exerts on A, and the force that A exerts on B is 1/10 the force that B exerts on A.
As for B.) The angle between the thread supporting A and the vertical, and the angle between the thread supporting B and the vertical depend on the mass of the balloons and the tension in the threads, which are not given in the problem. So, it's not possible to determine the relative angles of the threads.
And D.) A and B do not exert the same magnitude forces on each other, as explained above
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 A race car's velocity decreases from 26 m/s to 5 m/s over a 9 second time interval. What
is the car's average acceleration?
Answers
2.3m/s^2 is the car's average acceleration.
Describe acceleration.
Acceleration is the term used to describe how quickly velocity and speed change over time. It is referred to as accelerating when something changes its rate of motion. Because the direction is constantly shifting, motion on a circle accelerates even at constant speed.
According to Newton's Second Law, an object's acceleration is determined by the total force acting on it. Meters per second squared (m s2) is the unit of acceleration in the SI system. The distance an object travels in a specific amount of time is referred to as its speed.
v = u + at
v = 5m/s
u = 26m/s
t = 9sec
5 = 26 a*9
a = -21/9
a = -2.3m/s^2
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The vertical displacement of the wave is measured from the what? And what is the term for vertical displacement?
Answers
Explanation:
The vertical displacement of the wave is measured from the
equilibrium to the crest and is called the frequency.
crest to the trough and is called the amplitude.
trough to the trough and is called the wavelength.
equilibrium to the crest and is called the amplitude.
HØPÊ ĮŤ ÌŠ helpful
mark mE aS bRillAnT ♠PHYSICS 50 POINTS PLEASE HELP
State Newton's first and second laws of motion. Use these laws to explain how a satellite remains in orbit around the earth.
Answers
Newton’s First Law of Motion - if an object is at rest, it takes un-
balanced forces to make it move. Conversely, if an object is moving
it takes an unbalanced force to make it change it’s direction or speed.
Newton was the first to see that such apparently diverse phenomena as a satellite moving near the Earth's surface and the planets orbiting the Sun operate by the same principle: Force equals mass multiplied by acceleration, or F=ma.
Answer:
PLEASE HELP
HA
Explanation:
which of the following statements is true? During heat flow, energy is converted to matter.
Answers
Answer:
During heat flow, much of the energy is dissipated and cannot be used for useful work.
Explanation:
Which of the following statements is true?
During heat flow, much of the energy is lost.
During heat flow, energy is converted to matter.
During heat flow, much of the energy is dissipated and cannot be used for useful work.
A 5kg block rests on a 30° incline. The coefficient of static friction between the block and the incline is 0.20. How large a horizontal force must push on the block if the block is to be on the verge of sliding. a) up the incline, b) down the incline ?
Answers
Answer:
Hope It Help
Explanation:
That's all I know
In a football game, running back is at the 10-yard line and running up the field towards the 50 yard
line, and runs for 3 seconds at 8 yd/s. What is his current position (in yards)?
Answers
Answer:
34 yards or 34 yard line
Explanation:
8 × 3 = 24
24 + 10 = 34
Water flows through a pipe of radius 0.025 m at 1.5m/s. What is the volume flow rate?
Answers
Answer:
0.00294375
Explanation:
\(\pi\)r²=area of circle
\(\pi\)=3.14
radius=0.025
1.5m/s*\(\pi\)r²
1.5m/s*\(\pi\)(0.025)²
1.5m/s*\(\pi\)*0.000625
1.5m/s*0.0019625
0.00294375
What happens in a parallel circuit
when you increase the number of
bulbs?
A. The bulbs in the parallel circuit will have
equal brightness.
B. The bulbs in the parallel circuit will get
brighter.
C. The bulbs in the parallel circuit will blow out.
Answers
assignment questions
Answers
Answer:
which on a is the question
Describe an experiment to illustrate the fact that sound does not travel through a vacuum but rather require a medium for its propagation.
Answers
In the experiment, place a ringing alarm clock inside a vacuum chamber, and observe that when the chamber is evacuated, the sound from the alarm clock cannot be heard, illustrating that sound does not travel through a vacuum.
To illustrate that sound requires a medium for its propagation and does not travel through a vacuum, you can perform the following experiment:
Take two identical bells or sound-producing devices and place them in separate chambers, one in a vacuum chamber and the other in a chamber filled with air.
Ensure that both chambers are isolated from external noise sources.
Activate the sound-producing devices simultaneously, creating sound waves in both chambers.
Observe and listen for the sound produced in each chamber.
In the chamber filled with air, you will hear the sound clearly, as air molecules transmit the sound waves, allowing them to propagate and reach our ears.
However, in the vacuum chamber, you will not hear any sound because there is no medium (such as air) for the sound waves to travel through. Without molecules to transmit the vibrations, the sound cannot reach our ears.
This experiment demonstrates that sound requires a medium, such as air or other substances, to propagate and be perceived by our ears. In a vacuum, where there is an absence of molecules, sound cannot travel.
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I got this information for a lab but I don't know how to do the hypothesis and the conclusion please can you guys help me with it quickly
Answers
Answer:
A hypothesis is what you think will happen.
A conclusion is the results of an experiment summarized.
Hope this helps.
A gas is confined to a vertical cylinder by a piston of mass 2 kg and radius 1 cm. When 5J of heat are added, the piston rises by 2.4 cm. Find: (a) the work done by the gas; (b) the change in its internal energy. Atmospheric pressure is 105Pa
Answers
The work done by gas is 0.753 J and change in internal energy is 4.247J
So we are given that mass is 2kg , radius 1 cm and the amount of heat is 5 cm
The piston raised by 2.4cm
As we know that Work done is PΔV
Where ΔV is change in volume
Therefore ΔV = πr^2 h = π x (.01)^2 x .024 =7.53×10^(-6)m^3
Here pressure is 10^5 pa
So W = \(10^5\times7.53\times10^-(6)\)
Therefore W = 0.753 J
Now coming to change in internal energy
Change in Internal Energy = Heat Added - Energy lost in work
∴ 5J - 0.753 J = 4.247J
Hence the change in internal energy is 4.247 J
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Which statements explain the relationship between mass, velocity and kinetic energy? * Select the TWO (2) that apply.*
Consider the equation to calculate kinetic energy: KE = ½mv2
Kinetic energy increases if either the mass or the velocity of the object increases or if both increase.
Kinetic energy decreases if either the mass or the velocity of the object increases or if both increase.
Kinetic energy decreases if either the mass or the velocity of the object decreases or if both decrease.
Kinetic energy increases if either the mass or the velocity of the object decreases or if both decrease.
Answers
Kinetic energy decreases if either the mass or the velocity of the object decreases or if both decrease. and Kinetic energy increases if either the mass or the velocity of the object increases or if both increase.
Explanation:
These statements explain the relationship between mass, velocity, and kinetic energy .i.e KE = ½mv², (3) Kinetic energy decreases if either the mass or the velocity of the object decreases or if b decrease. (4)Kinetic energy increases if either the mass or the velocity of the object decreases or if both decrease.
What is kinetic energy?When a body has a mass of m kg and travels a velocity of v m/s then the kinetic energy is given by,
KE=1/2mv²
In the above relation, it is clearly shown that,
Kinetic energy is directly proportional to the mass of the body,
i.e
KE∝m
and also Kinetic energy directly varies with the square of the velocity of the body.
I.e
KE∝v²
Therefore, From the given expression we can conclude that when mass and velocity increased either one of them or both, the kinetic energy also gets increased.
And when mass and velocity decreased either one of them or both, the kinetic energy also gets decreased. Hence options (3) and (4) are correct.
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Physical science-current can be increased by...
Answers
sry if not
Option 3.) Increasing the voltage across the wire.
I know that the other answers are incorrect because, for one thing, the more resistance in a substance, the less flow of the current there is. Also, using a longer wire doesn't change anything, it just makes a electrical current go on longer. Lastly decreasing the voltage would make the current decrease in the atoms that flow through it to power an object.
-R3TR0 Z3R0
write down the value of
920 kg in g
Answers
Answer:
920000
Explanation:
Each kg contains 1,000 grams
when a ball thrown straight upwards reaches the very top of its path, its magnitude of acceleration is
Answers
when a ball thrown straight upwards reaches the very top of its path, its magnitude of acceleration is equal to acceleration due to gravity (g).
What is a Freely Falling Body?
A body is considered to be falling freely when it is dropped from a height under the influence of earth's gravity without being given any initial velocity.The body has no starting velocity.The body is subjected to an acceleration that is downward and equal to the earth's gravitational pull.The gravitational attraction of the earth causes the ball to become stationary when it reaches the highest point. When it eventually comes back, the speed is equivalent to the speed of gravity.Free fall causes an item to accelerate by -9.8 m/s². Free fall is any motion of a body in which gravity is the only force acting on it according to Newtonian mechanics. A body in free fall experiences no force according to general relativity, which reduces gravitation to a space-time curvature.To learn more about Free Fall from the given link
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Drag the tiles to the correct boxes. Not all tiles will be used.
Match the molecular shapes to the correct Lewis structures.
trigonal pyramidal
trigonal planar
bent
tetrahedral
linear
Answers
Answer
1) AlH3= trigonal planar
2) CH2F2= tetrahedral
3) PH3= trigonal pyramidal
4) O3= bent
Explanation:
I took the test
Megan is eating a Snickers and decides not to finish the last it of it. She drops the snickers into a trashcan below. What happens to the speed of the piece of Snickers as it falls towards the trashcan?
Answers
Answer:
i like trains 45654
Explanation:
what is projectile motion
Answers
Answer: Motion that follows a curved line.
Explanation: like when you pass the ball to your fellow teammate during basketball it goes in a curved motion through the air because of gravity.
Assume you are a trainer at a local gym. There is evidence that intense or exhaustive physical exercise can increase the production of free radicals. Antioxidants can be used to combat the damage caused by free radicals. One of your competitive athletes has heard bits and pieces of this information and asks you more about it. How would you counsel him?
Use language that the average person will understand, respond to this athlete and be sure to include the following information as a part of your response:
What is meant by oxidation and why can it be damaging to cells?What are free radicals?Why do we produce free radicals if they can damage my body?What are antioxidants? How do antioxidants combat free radicals?What foods are high in antioxidants?Should your friend buy an antioxidant supplement?
Answers
Free radicals are molecules that have an unpaired electron. They can damage cells and tissues by stealing electrons from other molecules in the body, which can lead to a chain reaction of damage.
While it's true that free radicals can damage our bodies, they are also produced as a natural byproduct of our body's normal metabolic processes. In fact, exercise is just one of the many ways that our bodies produce free radicals.
Antioxidants are molecules that can neutralize free radicals by donating an electron to them, without becoming unstable themselves. This can help to prevent the chain reaction of damage that free radicals can cause.
There are many foods that are high in antioxidants, including fruits and vegetables such as blueberries, strawberries, spinach, and kale. Other sources of antioxidants include nuts, seeds, and whole grains.
While it's always a good idea to get your nutrients from whole foods, there are also many antioxidant supplements available on the market. However, research has shown that these supplements may not be as effective as getting antioxidants from whole foods. In fact, some studies have even suggested that high-dose antioxidant supplements could be harmfulin some cases.
My advice would be to focus on getting your antioxidants from whole foods, rather than supplements. By eating a balanced diet that includes plenty of fruits, vegetables, nuts, seeds, and whole grains, you can help to combat the damage caused by free radicals and support your overall health. Additionally, it's important to remember that exercise is still an important part of a healthy lifestyle, and the benefits of exercise far outweigh the potential risks of free radical damage.
If a quarterback gets hit by a defensive lineman with a mass of 100 kg and accelerating at a rate of 1m/s2 at what force is the quarterback getting hit?
Answers
The quarterback is getting hit with a force of 100 Newtons.
How to calculate the force with which the quarterback is getting hit
We can use Newton's second law of motion:
Force = Mass * Acceleration
Given that the mass of the defensive lineman is 100 kg and the acceleration is 1 m/s², we can substitute these values into the equation:
Force = 100 kg * 1 m/s²
Force = 100 N
Therefore, the quarterback is getting hit with a force of 100 Newtons.
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A 540 W electric heater is designed to operate at 120 V. What current does it draw?
Answers
The electric heater draws a current of 4.5 amps.
Using Ohm's Law, we can calculate the current drawn by the electric heater. Ohm's Law states that the current (I) flowing through a conductor is equal to the voltage (V) applied to the conductor divided by its resistance (R):
I = V/RIn this case, the voltage (V) is 120 V and the power (P) of the electric heater is 540 W. We can use the formula P = VI, where P is the power in watts, V is the voltage in volts, and I is the current in amperes. Solving for I, we get:
I = P/VI = 540 W / 120 VI = 4.5 ATherefore, the electric heater draws a current of 4.5 amperes (A) when operated at 120 volts (V).
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What is a distinguishing feature in a city known as?
OA) hot spot
OB) landmark
C) state legend
OD) state park
Answers
A defining characteristic of a city is often referred to as a "landmark." A landmark is a distinctive feature or building that stands out and is used to identify or represent a location. Landmarks can be man-made, such as structures, monuments, or historical locations, or they can be natural, like mountains, rivers, or lakes.
Landmarks are significant tourist destinations for both locals and visitors because they frequently have historical, cultural, or architectural value. They can serve as a symbol of a city's identity, history, and personality and end up being recognised as the place's iconic symbols. Landmarks might be notable buildings, statues, cathedrals, museums, or bridges that have come to symbolise the city in which they are located.
Therefore, option (OB) "landmark" is the term used to describe a distinguishing feature in a city.
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Investigation Question: How do objects get energy?Claim 1: Objects make their own energy.Claim 2: Objects get energy from other objects that have energy.Pick one of the claims above and provide evidence and reasoning for why you believe it is correct.
Answers
Energy can neither be created nor destroyed. It can only be transferred from one object to another.
Claim 2 is correct.
Energy cannot be created or destroyed. So, objects can not make their own energy.
Energy can be transferred or transformed. Energy can be changed in many ways, such as conversion of kinetic energy into potential energy and vice-versa, when one object moves another object, etc.
For example, to lift an object against the gravity, work is done on the object. This work is converted in the form of potential energy, called as gravitational potential energy. When an object, say an apple falls towards Earth from a tree, gravitational potential energy is converted into kinetic energy.
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a
A particle starts at the origin and is deflected by another particle with a like charge. In 0.5 s the first particle has moved 30 min a positive direction. What is its
displacement?
A.
30 m
B. 60 m
C. 30
D
-30 m
Answers
Answer:
C I believe if I’m wrong I’m sorry
Explanation:
A crate with a mass of 1000 kg is being pulled along greased tracks by a winch. The winch is exerting a force of 2000 N
in the horizontal direction along the tracks. The coefficient of kinetic friction between the crate and the tracks is 0.2.
20. What is the net force acting on the crate in the horizontal direction?
21.
Using Newton's second law, calculate the crate's acceleration.
Answers
Coefficient of Kinetic Friction = 0.2
Mass of the crate = 1000 kg
Force applied = 2000 N
Net force Acting on the crate in the Horizontal Direction:Normal Force applied on the Crate:Normal force is the force applied on the object by the surface. It is equal and opposite to the force of gravity
So, we can say that Normal force = | Gravitational Force |
Normal Force = | mg |
Normal Force = 1000 * 9.8
Normal Force = 9800 N
Finding the Frictional Force:We know that:
coefficient of Kinetic friction = Friction force / Normal force
replacing the known values
0.2 = Friction force / 9800
Friction Force= 0.2 * 9800
Friction Force = 1960 N
Net force acting on the Crate:
We know that a force of 2000 N is being applied on the crate in the Horizontal direction
Frictional force is always opposite to the horizontal force. So, we can say that:
Applied force - Friction Force = Net Force
replacing the variables
2000 - 1960 = Net force
Net Force = 40N
Therefore, a net force of 40N is being applied on the Crate
Acceleration of the Crate:From newton's second law of motion:
F = ma
replacing the variables
40 = 1000 * a
a = 40/1000
a = 0.04 m/s²
Hence, the crate will have an acceleration of 0.04 m/s²
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The number of protons in the nucleus of an atom determines the species of the atom, i.e., the element to which the atom belongs. An atom has the same number of protons and neutrons. But the electron number cannot be used instead because (5 points)
a. electrons are not within the nucleus
b. electrons are negatively charged
c. electrons can be removed from or added to an atom
d. electrons are lighter than protons
Answers
The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)
Why the electron number cannot be used instead?The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.
This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.
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