How much work is required to move a +150 μC point charge from P to Q?A) 0.023 JB) 0.056 JC) 75 JD) 140 JE) 2800 J
Answers
The work required to move the +150 μC point charge from P to Q is 1.35J
The answer is not listed in the given options.
The work required to move a point charge from one point to another is given by the equation:
W = q * V
where W is the work done,
q is the charge being moved,
and V is the potential difference between the two points.
To solve this problem, we need to first find the potential difference between points P and Q.
This can be done using the equation:
V = k * (Q / r).
where V is the potential difference,
k is Coulomb's constant (9 x 10^9 N*m^2/C^2),
Q is the charge causing the potential,
and r is the distance between the two points.
In this case, we have:
Q = +150 μC \(= 150 * 10^-6 C\)
r = 0.15 m (assuming the points are a distance of 15 cm apart)
\(k = 9 * 10^9 N*m^2/C^2\)
Plugging these values into the equation gives:
\(V = (9 * 10^9 N*m^2/C^2) * (150 * 10^-6 C / 0.15 m)\)
= 9000 V
Now we can use the equation for work to find the amount of work required to move the point charge from P to Q:
\(W = (150 * 10^-6 C) * (9000 V) = 1.35 J\).
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Question: How much work is required to move a +150 μC point charge from P to Q?A) 0.023 JB) 0.056 JC) 75 JD) 140 JE) 2800 J
Related Questions
The voltage waveform in the given figure is applied across a 55-μf capacitor
Answers
Answer:
Explanation:
A capacitor is an electronic component that stores and releases electrical energy. It consists of two conductive plates separated by an insulating material called a dielectric. When a voltage is applied across the plates, charge accumulates on them, creating an electric field between the plates.
The capacitance of a capacitor is a measure of its ability to store charge. It is typically represented by the symbol 'C' and is measured in farads (F). In your case, you mentioned a 55-μF (microfarad) capacitor, indicating its capacitance value.
When a voltage waveform is applied across a capacitor, the capacitor charges and discharges in response to the changes in voltage. The rate at which the capacitor charges and discharges depends on the capacitance and the resistance in the circuit
Since there is no figure provided in the text, I am unable to reference it for the specific details of the voltage waveform. However, I can explain the general behavior of a capacitor when a voltage waveform is applied.
When a voltage waveform is applied across a capacitor, the capacitor charges and discharges in response to the changes in voltage. The behavior of the capacitor is determined by its capacitance, which is given as 55 μF in this case.
As the voltage waveform varies, the capacitor stores and releases electrical charge. During the rising portion of the waveform, the capacitor charges and accumulates energy. During the falling portion, the capacitor discharges and releases the stored energy.
The exact behavior and characteristics of the voltage waveform and the charging/discharging process depend on the specific shape and frequency of the waveform. Without the specific details of the voltage waveform provided in the figure, it is challenging to provide a more detailed analysis.
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Who was the scientist who gave us the laws of motion?.
Answers
Answer:
Isaac Newton
Explanation:
Newton's laws of motion, three statements describing the relations between the forces acting on a body and the motion of the body.
difference between national park and wild life reserve
Answers
Answer:
wildlife reserves are not available for camping...but you can camp at a skatepark
Joel inflates a balloon and ties it off. He then rubs the balloon against his hair, which makes his
hair stand up. He then places the balloon near the classroom wall and sticks it to the wall. Finally, he
pops the balloon with a pin. Which of these is an example of gaining a charge by friction in this example?
A. Rubbing the balloon against his hair
B. Placing the balloon near the classroom wall
C. Touching the balloon to the classroom wall
D. Popping the balloon with a pin
Answers
Answer: I Believe Its A. :)
Which is NOT true of refraction?
A. Refraction occurs when light slows down
when traveling through different mediums.
B. Refraction occurs because light does not
travel in a straight path.
C. Refraction may cause you to see a mirage.
Answers
The incorrect statement about refraction is "Refraction occurs because light does not travel in a straight path." The correct option is B.
Refraction is the bending or change in the direction of light as it passes from one medium to another, caused by a change in the speed of light. It occurs due to the variation in the optical density of different mediums, leading to a shift in the light's path.
Option A (Refraction occurs when light slows down when traveling through different mediums) is true. Refraction happens when light encounters a change in medium, such as going from air to water or from air to glass. The change in speed causes the light to bend or change direction.
Option C (Refraction may cause you to see a mirage) is also true. Refraction can occur when light passes through air layers with different temperatures, creating varying densities and bending the light rays. This phenomenon can create optical illusions like mirages.
Option B (Refraction occurs because light does not travel in a straight path) is not true. Refraction occurs precisely because light does travel in a straight path. However, when light encounters a change in medium, such as a different density or refractive index, it changes direction or bends, resulting in refraction.
Therefore, The correct option is B.
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What is a major difference between economic wants and economic needs? A- needs have a greater degree of scarcity than wants B- Needs are more important to survival than wants C- needs play a greater role in the economy then wants D- needs require more labor to satisfy than wants
Answers
Answer:
B because Needs are things that are essential to life but wants are just extra.
Explanation:
For example food and water is needed for life but a want would be to have the latest I phone
A major difference between economic wants and economic needs is: B- Needs are more important to survival than wants.
Economic wants can be defined as the goods and services that are desired by consumers but are not important for their survival. Some examples of economic wants are mobile phone, automobile cars, computer, clothes, television, furniture, etc.
Economic needs can be defined as the goods and services that are required by the people or consumers for their daily survival. Some examples of economic needs are: shelter, food, water, land, air, etc.
In conclusion, economic wants are less important because they are just our different desires in life but economic needs are very important and significant for the daily survival of humans because they are the basics of life.
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What are the two groups of planets based on composition?
Answers
In the dark, is the current through an LDR higher or lower than in the light?
Answers
Answer:
An LDR's resistance is high in the dark and at low light levels, allowing only a little amount of current to pass through it. An LDR's resistance is low in bright light, allowing more current to flow through it.
2
Which statement can be made about the amplitude of any transverse wave?
Answers
Answer:
It is the length from the midpoint to the crest.
Explanation:
A mechanical machine requires 210 J of work to do 115 J of work in lifting a crate. What is the efficiency of the machine?
Answers
Answer:
efficiency is equal to work output over work input times 100 ÷ so the answer for this question is 54.7 percent
A circuit with a battery, a 3 Ω resistor, and a 15 Ω resistor, in parallel. The total current is the system is 3.0 A. What is the voltage of the battery?
Answers
Given data:
* The current through the system is I = 3 A.
* The resistance of resistors connected in parallel is,
\(\begin{gathered} R_1=3\text{ ohm} \\ R_2=15\text{ ohm} \end{gathered}\)Solution:
The equivalent resistance of the system is,
\(\frac{1}{R_{eq}}=\frac{1}{R_1}+\frac{1}{R_2}\)Substituting the known values,
\(\begin{gathered} \frac{1}{R_{eq}}=\frac{1}{3}+\frac{1}{15} \\ \frac{1}{R_{eq}}=\frac{5+1}{15} \\ \frac{1}{R_{eq}}=\frac{6}{15} \end{gathered}\)By taking inverse value,
\(\begin{gathered} R_{eq}=\frac{15}{4} \\ R_{eq}=3.75\text{ ohm} \end{gathered}\)According to Ohm's law, the voltage across the battery is,
\(V=IR_{eq}\)Substituting the known values,
\(\begin{gathered} V=3\times3.75 \\ V=11.25\text{ volts} \end{gathered}\)Thus, the voltage across the battery is 11.25 volts.
A driver without a seat belt getting thrown from the car in a collision is an example of Newton’s?
Answers
how much work is done to move a 25 kg Mass 8 meters
Answers
Answer:
So, the power done is 196 watts.
Explanation:
Question 10 of 20 Which statement describes an example of static electricity? O A. Electric charges move from a position of higher potential energy to a position of lower potential energy. O B. Electrons flow from an outlet into a toaster, causing it to heat a slice of bread. O C. A person rubs a shoe on a rug, causing extra electrons to be transferred to the shoe. O D. A conductor allows electrons to flow through it.
Answers
Answer:
C. A person rubs a shoe on a rug, causing extra electrons to be transferred to the shoe
Explanation:
I just took the test
Answer:
C. A person rubs a shoe on a rug, causing extra electrons to be transferred to the shoe.
Explanation:
a pe x
If a sample of an unknown material with a mass of 0.68 g and a volume of 0.8 cm3 is dropped
into maple syrup, will it sink or float? maple syrup has a density of 1.33 g/cm3
Answers
(Physical science!!!)
Wetlands have characteristics of both dry land and of bodies of water. How have amphibians adapted to this environment?
A.
They can lay their eggs underwater or on dry land.
B.
Water can pass through their lungs; they have night vision.
C.
Water can pass through the skin; they have lungs.
D.
They retain a set of gills their whole lives.
Answers
Amphibians retain a set of gills their whole lives that help them to breathe in the water. So, the correct option is D.
What are Amphibians?Amphibians are defined as the class of cold-blooded vertebrates which is made up of frogs, toads, salamanders, newts, and caecilians. All amphibians that spend part of their lives in water and part of their lives on land.
Amphibians are born with gills, and some outgrow them when they become adults while others retain them for their entire lives.
Thus, the correct option is D.
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drag the words in the left-hand column to the appropriate blanks in the sentences in the right-hand column. you may use the same words more than once.
Answers
The instructions provided do not specify the left-hand column words or the sentences in the right-hand column. Please provide the words and sentences so that I can assist you further.
Unfortunately, without the specific words and sentences, I am unable to provide a detailed explanation. However, I can provide a general explanation of how to approach this type of task.
When given a set of words and sentences, the goal is to match the appropriate word to the corresponding blank in the sentence. To do this effectively, it's important to carefully read each sentence and consider the context and meaning of the words. Look for clues such as subject-verb agreement, tense consistency, and logical coherence.
Start by analyzing each sentence and identifying the missing word or phrase that would fit logically and grammatically. Then, review the available words and consider their meanings and usage. Try to match the appropriate word to the blank based on context and the requirements of the sentence.
Once you have identified the suitable words, drag and place them into the respective blanks in the sentences. Double-check your choices to ensure they make sense and maintain the intended meaning of the sentences.
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a rock of mass of 540 g in the air is found to have an apparent mass of 342 g when submerged in water (a) calculate the weight of the Rock given that the acceleration of the air g 10 m / s² to ignore the air resistance
Answers
Answer: 5.4 N
Explanation:
Given
mass of rock in the air is 540 g
Apparent mass of 342 gm when submerged in water
Weight of the rock is the product of mass and accleration due to gravity
\(\Rightarrow W=mg\\\Rightarrow 0.540\times 10=5.4\ N\)
4. Runaway truck ramps are common on mountainous highways in case the brakes fail on large trucks. if a runaway 60,000 kg truck is moving at 27 m/s, how much work must be done to stop the truck? 5. th the net force applied by the truck ramp in the previous question is -300,000 N, how far along the ramp will the truck move as it stops?
Answers
Answer:
10000000000000000000000000000000000
Explanation:
How would the moon appear to people on earth on this day
It would be half dark
It would be. Quarter dark
It would be complete light
It would be completely dark
Answers
Answer:
It would be. Quarter dark
Explanation:
Sun's lights going all the way to the moon but there will still a dark part of it
it's obviously won't be neither complete light nor completely dark
so the right answer is: Quarter dark
A golf ball of mass 0.045 kg is hit off the tee at a speed of 34m/s . The golf club was in contact with the ball for 3.50*10^-3s .
Find the impulse imparted to the golf ball.??
Find the average force exerted on the ball by the golf club.??
Express your answer to two significant figures and include the appropriate units.
Answers
The average force exerted on the ball by the golf club is 490 N.
Thus, F = p/t = 0.49 * 10³ N = 490 N.
Momentum is a metric for power and how challenging it is to stop an object. Zero momentum applies to any object that is not moving. tremendous, slow-moving objects have tremendous amounts of momentum.
A small, swiftly moving object also possesses a significant momentum. A bowling ball, for instance, has more momentum than a ping-pong ball if their velocities are equal.
This is because bowling balls are larger in mass than ping-pong balls.
Thus, The average force exerted on the ball by the golf club is 490 N.
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what causes short sightedness ?how is it corrected
Answers
Answer:
Short sight occurs when the eyeball is too long or the lens is too thick, or both. As a result, light rays from distant objects are focused in front of the retina (because the light rays are highly converged). The image formed on the retina is therefore out of focus.
Short sight can be corrected by wearing glasses with concave lenses. Light rays from distant objects are diverged by concave lenses before entering the eyes, so that light can be focused on the retina to form a sharp image.
this si a 2 part question84) A shock absorber is designed to quickly damp out the oscillations that a car would otherwise make because it is suspended on springs. (a) Find the period of oscillation of a 1610-kg car that is suspended by springs that make an effective force constant of 5.75×104 N/m. (b) Find the damping constant b that will reduce the amplitude of oscillations of this car by a factor of 5.00 within a time equal to half the period of oscillation.
Answers
Given data
*The given mass of the car is m = 1610 kg
*The given effective force constant is k = 5.75 × 10^4 N/m
(a)
The formula for the period of oscillation of a 1610 kg car is given as
\(T=2\pi\sqrt[]{\frac{m}{k}}\)Substitute the known values in the above expression as
\(\begin{gathered} T=2\times3.14\times\sqrt[]{\frac{1610}{5.75\times10^4}} \\ =1.05\text{ s} \end{gathered}\)Hence, the time period of oscillation of a 1610 kg car is T = 1.05 s
(b)
As from the given data, the amplitude of the oscillation of the car decreases by a factor of 5.00. Then, the expression for the amplitude of the oscillation, and the damping constant (b) is calculated as
\(A=A_0e^{-\frac{bt}{2m}}\)Substitute the known values in the above expression as
\(\begin{gathered} \frac{A_0}{5.0}=A_0e^{-\frac{bt}{2m}} \\ bt=2m\ln (5.0)_{} \\ b(\frac{T}{2})=2m\ln (5.0) \\ b=\frac{4m\ln (5.0)}{T} \\ =\frac{4\times1610\times\ln (5.0)}{1.05} \\ =9871.2\text{ kg/s} \end{gathered}\)Hence, the damping constant is b = 9871.2 kg/s
What is the average speed of a bird that flies 1.55 km in 30 minutes
Answers
Answer:
the average speed in annual work out is 46.5
A student drops a rock from a bridge to the
water 14.4 m below.
With what speed does the rock strike
the water? The acceleration of gravity is
9.8 m/s².
Answer in units of m/s.
Answers
Answer:
Explanation:
at first the rock is at rest so initial velocity is zero
after accelerating it reaches a final velocity
we are supposed to find that final velocity
\(v^{2} = u^{2} +2ax\)
v= final velocity
u= initial velocity
x= distance
a= acceleration
\(v^{2} = 0^{2} + 2(9.8)(14.4)\)
\(v^{2} = 282.24\)
\(v= \sqrt{282.24}\)
\(v= 16.8 m/s\)
what index of refraction halves the wavelength that light has in a vacuum?
a) 1.33
b) 1.50
c) 1.41
d) 2.00
e) 5.00
Answers
The index of refraction that halves the wavelength that light has in a vacuum is 2.00. Therefore, the correct option is (d) 2.00.
When light passes from one medium to another, it changes its velocity, and thus its wavelength. The index of refraction is a measure of how much light is bent when passing through a medium and can be calculated using Snell's Law:n1sin θ1=n2sin θ2where n1 and n2 are the indices of refraction of the two media, and θ1 and θ2 are the angles that the light makes with the normal line in the first and second media, respectively.
For a given angle of incidence, we can see that the index of refraction is directly proportional to the sine of the angle of refraction, which means that as the angle of refraction increases, so does the index of refraction. Now, let's assume that light is passing from vacuum (with index of refraction n1=1) to a medium with an unknown index of refraction n2.
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A 1,075 N sky diver has opened his parachute to slow his descent to a constant
speed the parachute applies 1,469 N of force. What deceleration does he
experiences?
Answers
The deceleration experienced by the 1075 N sky diver as he opened his parachute is 13.39 m/s²
How to determine the decelerationForce = mass × acceleration
We know that deceleration is the acceleration of stopping objects. Thus,
Force (F) = mass (m) × deceleration (a)
Thus, we can obtain the deceleration of the sky diver as follow:
Weight of diver (W) = 1075 NForce (F) = 1469 NAcceleration due to gravity (g) = 9.8 m/s²Mass of diver = W / g = 1075 / 9.8 = 109.69 KgDeceleration (a) =?Force = mass (m) × deceleration (a)
1469 = 109.69 × a
Divide both sides by 109.69
a = 1469 / 109.69
a = 13.39 m/s²
Thus, the deceleration is 13.39 m/s²
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A block of mass 1kg is placed on an inclined plane at an angle of 30° to the horizontal. Calculate the frictional force, normal reaction, the coefficient of the static friction
Answers
Question:
A block of mass 1kg is placed on an inclined plane at an angle of 30° to the horizontal. Calculate the frictional force, normal reaction, the coefficient of the static friction
Answer:
Break the mg force into components in the plane of the inclined plank. Now force acting parallel is mgsin37°. Perpendicular force is mgcos37° which is equal to normal force.
Now calculate max value of friction force which is 0.8*mg cos37°. Since its greater than pulling force mgsin37°, the body will be at rest and acceleration is zero.
Force applied by surface is vector sum of normal force and friction force acting.
The half life of phosphorus-33 is 25 days. After 50
days, What is the original sample size if 10 g
remain?
Answers
The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k.
What is phosphorus-33?It is used in life-science laboratories in applications in which lower energy beta emissions are advantageous such as DNA sequencing. P can be used to label nucleotides. It is less energetic than 32P, giving a better resolution.
Phosphorus 33 is an artificial radioactive element. It is produced with a low yield by the neutron bombardment of phosphorus 31 (stable). The phosphorus 33 has a radioactive period of 25.3 days.
Phosphorus-33 atom is the radioactive isotope of phosphorus with relative atomic mass 32.971725, half-life of 25.34 days and nuclear spin (1)/2.
Phosphorus was discovered by the German merchant Hennig Brand in 1669.
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63. The magnetic force acting on a moving charge is given by the product of three quantities,
namely
చలనంలో ఉన్న ఆవేశంపై పనిచేయు అయస్కాంత బలం మూడు రాశుల లబ్దానికి సమానం అని
(1) charge, speed, electromotive force
ఆవేశం, వడి, విద్యుతచ్చాలక బలం
archarge, magnetic flux, magnetic flux density
ఆవేశం, అయస్కాంత అభివాహం, అయస్కాంత అభివాహ సాంద్రత
(3) charge, speed, magnetic flux density
ఆవేశం, వడి, అయస్కాంత అభివాహ సాంద్రత
(4) charge, speed, current
ఆవేశం, వడి, విద్యుత్ ప్రవాహం
Answers
Answer:
the correct one is 3
Explanation:
The magnetic force is described by the expression
F = q v x B
The bold indicate vectors, q is the charge, v the velocity and B the magnetic induction
This expression can be written in scalar form
F = q v B sin θ
where θ is the angle between velocity and induction.
The direction of the force is perpendicular to the vectors.
When revising this expression the force depends on the electric charge, the speed of the particle and the induction of the magnetic field
therefore, checking the possible answers, the correct one is 3